AR-PD-157_and_Adapter_Drawings.pdf

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Attached to
CROWS M153 Boresight Telescope Federal contract opportunity
Solicitation number
W15QKN-16-R-0105
Issued by
Department of the Army Materiel Command Contracting Command Picatinny Arsenal

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This attachment includes AR-PD-157 and the adapter drawings referenced within AR-PD-157.

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DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.

METRIC

AR-PD-157

CAGE Code 19200 May 01, 2013

PERFORMANCE PURCHASE DESCRIPTION

TELESCOPE, BORESIGHT, COMMON

1. SCOPE

1.1 Scope. This specification prescribes the performance requirements and identifies the verification procedures for the Telescope Assembly, Boresight, Common, hereinafter referred to simply as Boresight Telescope.

2. APPLICABLE DOCUMENTS

2.1 General. The documents listed in this section are specified in sections 3, 4 or 6 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3, 4 and 6 of this specification, whether or not they are listed.

2.2 Government documents.

2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract.

COMMERCIAL ITEM DESCRIPTIONS

A-A-59503A Nitrogen, Technical

DEPARTMENT OF DEFENSE SPECIFICATIONS

MIL-C-675C Coating of Glass Optical Elements MIL-PRF-13830B Optical Components for Fire Control Instruments, General

Specification Governing the Manufacture, Assembly, and Inspection of

DEPARTMENT OF DEFENSE STANDARDS

AR-PD-157

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MIL-STD-130N Identification Marking of U.S. Military Property

MIL-STD-171F Finishing of Metal and Wood Surface MIL-STD-810G Environmental Test Methods

(Copies of these documents are available online at http://assist.daps.dla.mil or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.)

2.2.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation or contract.

U.S. ARMY ARDEC DRAWINGS

13023642 7.62 mm Stem Adapter 13022750 5.56 mm Stem Adapter 13022751 50 cal Stem Adapter 13022752 40 mm Stem Adapter

(Copies of ARDEC drawings may be requested online at usarmy.picatinny.ardec.list.drawing-request-help-desk@mail.mil or from US Army ARDEC, ATTN: RDAR-EIS-PE, Picatinny Arsenal, NJ 07806-5000.

2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract.

ASTM INTERNATIONAL

ASTMD3951 Standard Practice for Commercial Packaging

(Copies of ASTM standards may be ordered online at http://www.astm.org/ or from the ASTM International, 100 Barr Harbor Drive, Conshohocken, PA 19428-2959)

2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.

2.5 Requirements. Requirements followed by a “(T)” are Threshold requirements and shall be met unless specifically waived in a related statement of work. Threshold marking is used in sections with multiple requirement levels to differentiate between the levels, all unmarked requirements are threshold. Requirements followed by a “(O)” are Objective requirements, that is, they are the preferred goals and are only required to be met to the extent that they are incorporated into a related statement of work or contract.

http://assist.daps.dla.mil/

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3. REQUIREMENTS

3.1 Design verification. When specified in the contract or purchase order, a sample of the Boresight Telescope shall be subjected to design verification inspection in accordance with the technical provisions specified in TABLE I and Section 4.1.

3.2 First article inspection. When specified in the contract or purchase order, a sample of the Boresight Telescope shall be subjected to first article inspection in accordance with the technical provisions specified in TABLE I and Section 4.2.

3.3 Conformance inspection. Unless otherwise specified in the contract or purchase order, a sample of the Boresight Telescope shall be subjected to conformance inspection in accordance with the technical provisions specified in TABLE I, TABLE II, TABLE III and Section 4.3.

3.4 Operating requirements.

3.4.1 Parallax. Maximum allowable parallax at 1000 meters +/-200 shall not exceed 10 seconds of arc.

3.4.2 Field of view (FOV). The FOV shall be greater than or equal to 4 degrees with a

5% tolerance.

3.4.3 Resolution. The resolution through the eyepiece at the center of the field of view shall be better than or equal to 12 seconds of arc (T), 6 seconds of arc (O).

3.4.4 Focusing range. The Boresight Telescope shall be focusable and able to achieve a resolution of 43 seconds of arc at a range from 15 meters (T), 5 meters (O), to infinity.

3.4.5 Magnification. The magnification shall be 5X minimum with a 5% tolerance.

3.4.6 Diopter range. The eyepiece focus shall be adjustable through a minimum true range of ± 4 diopters. True range means that the minimum range of ± 4 diopters must be measured from zero. (T)

3.4.6.1 Diopter Scale. It is preferred that the eyepiece in the boresight telescope shall have a diopter scale that ranges from ± 4 centered at zero and the diopter scale shall be accurate within ± 0.25 diopters. (O)

3.4.7 Sealing. The Boresight Telescope shall show no evidence of leakage after submersion in water to a depth of 1 meter for a period of one (1) hour.

3.5 Interface and interoperability requirements.

3.5.1 Boresight Telescope interface requirement. The Boresight Telescope shall adapt to all stem adapters listed below. The stem on the boresight telescope shall penetrate a minimum of 3 3/8 inches and a maximum of 3 ¾ inches when seated in any of the stem adapters and shall be visible in the remove-slot. The Boresight Telescope shall properly seat in each of the stem

- 4 -adapters. When placed in the 3 o’clock or 9 o’clock position, the Boresight Telescope shall not slip or fall down to the 6 o’clock position under normal operating procedures. The system, meaning the boresight telescope attached to any one of the stem adapters, shall be able to maintain collimation to the requirements listed in 3.5.6 when attached.

Applicable stem adapters drawings are as follows:

13022750 13023642 13022751 13022752

3.5.2 Optical components. All optical elements, components and assemblies shall comply with the requirements of MIL-PRF-13830B.

3.5.3 Optical coating. All optical elements shall meet the requirements of MIL-C-675C.

3.5.4 Reticle. The reticle shall have a clearly defined aiming index and shall be visible at night without the use of generated or stored electricity in the device itself, with no other marks on the lens. The reticle shall not contain tritium, or other radioactive material, and shall be visible with the use of an external light source such as a flashlight at night (T). The reticle shall include mil markings starting no closer than 1 mil away from the meeting of the crosshairs (O).

3.5.5 Reticle adjustment. Reticle adjustment shall be accomplished without breaking purge, and without the use of special tools (T), with no tools (O). It shall provide ease of adjustment by an individual wearing MOPP IV Nuclear, Biological and Chemical protective gear. The total dynamic range of adjustment shall be at least 20 minutes of arc in both azimuth and elevation. There shall be at least 10 minutes of arc of adjustment on all four sides of the reticle after it is collimated.

3.5.6 Reticle Collimation. The reticle shall be adjustable to the axis of the boresight telescope stem/stem adapter interface for each stem adapter identified in 3.5.1, to within 20 seconds of arc.

3.5.6.1 Reticle Collimation Repeatability. After adjustment of the boresight (reticle), the collimation repeatability error for removal and reinsertion of the boresight telescope from/to the stem adapter, as indicated by the reticle position (without readjustment) shall not exceed 30 seconds of arc for 80% of the readings and shall not exceed 40 seconds of arc for 100% of the readings for each telescope.

3.5.6.2 Reticle Collimation Retention. After adjustment of the boresight (reticle), and then exposure to any and/or all of the requirements of section 3.6 Environmental requirements, the boresight telescope shall be tested 10 times (without readjustment) after each of the section

3.6 Environmental requirements and the reticle shall maintain collimation to within an average of 30 seconds of arc with individual measurements not exceeding 50 seconds of arc.

3.5.7 Eye relief. The eye relief shall be 12.0 mm minimum with a 5% tolerance.

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3.5.8 Exit pupil. The exit pupil shall be 3 mm minimum in diameter with a 5% tolerance.

3.5.9 Pressurization. The interior of the telescope shall be pressurized to an internal pressure of 351.5 +/- 7.031 gf/cm² (5.0 +/- 0.1 psig) with nitrogen gas conforming to A-A- 59503A, type I, class I, grade B with a dew point less than -31.6º C (-25º F).

3.5.10 Purging. The Boresight Telescope shall be nitrogen purged. It shall include a purge valve to allow user to re-purge system for maintenance purposes.

3.5.11 Finish. For aluminum components, the Boresight Telescope shall have a protective finish of 7.1.2 or 7.2.2 (black) of MIL-STD-171F. For steel surfaces, the Boresight Telescope shall have a protective finish (or functional equivalent) of 5.1.1 plus 20.24 of MIL-STD-171F.

For surfaces interfacing with gun bore/mandrel, a wear finish (or functional equivalent) of nickel or chromium plating shall be applied per 1.4.3.2 or 1.2.2 of MIL-STD-171F respectively.

3.5.12 Lubricant. All moving parts of the Boresight Telescope shall be lubricated with a suitable lubricant which permits an operating range of temperature from -45.5 °C (-50 °F) and +60 °C (+140ºF). User shall be able add additional lubricate as needed for maintenance of the Telescope to all lubricated parts.

3.5.13 Weight. The telescope shall have a maximum weight of 0.408 kg (0.9 lb).

3.6 Environmental requirements.

3.6.1 Operating temperature. The Boresight Telescope shall meet all the requirements of this specification during and after having been exposed to any temperature from -45.5 °C (-50 °F) to +60 °C (+140ºF).

3.6.2 Storage temperature. The Boresight Telescope shall meet all the requirements of this specification after having been exposed and thermally stabilized at any temperature within the range of -51.1 °C (-60 °F) and +71.1 º C (+160 º F).

3.6.3 Drop. The Boresight Telescope shall show no visible signs of damage or performance degradation and shall meet all the requirements of this specification after being exposed to a drop from 61 cm (2 ft) (T), 183 cm (6ft) (O), onto the objective side, eyepiece side, one other side, and either top or bottom of the Boresight Telescope for a total of 4 drops. The barrier receiving the impact shall be of two inch plywood backed by concrete (see MIL-STD- 810G, Method 516.6, Procedure IV).

3.6.4 Altitude. The Boresight Telescope shall meet all the requirements of this specification and show no evidence of damage, during and after exposure to a pressure equivalent to an altitude of 15,000 ft. (Ref: MIL-STD-810G, Method 500.5, Procedure II).

3.6.5 Transportation Altitude. The Boresight Telescope shall meet all the requirements of this specification and show no evidence of damage, during and after exposure to a pressure equivalent to an altitude of 50,000 ft. with exposure duration of at least 24 hours (Ref: MIL- STD-810G, Test Method 500.5 Procedure I).

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3.6.6 Humidity. The Boresight Telescope shall meet all the requirements of this specification and shall show no evidence of internal moisture during and after exposure of up to 95% relative humidity. The Boresight Telescope shall meet all the requirements of this specification during or after exposure of up to 95% relative humidity for a period of no less than 240 hrs.

3.6.7 Salt fog. The Boresight Telescope shall meet all the requirements of this specification after being exposed to a 5% sodium chloride atomized spray for not less than 48 hours. There shall be no evidence of corrosion on the Boresight Telescope.

3.6.8 Blowing Sand & Dust. The Boresight Telescope shall meet all the requirements of this specification after being exposed to a sand and dust environment typical of dry desert conditions for a minimum of 90 minutes (Ref Procedures I and II Method 510.5 of MIL-STD- 810G).

3.7 Support and ownership requirements.

3.7.1 Workmanship. All optical and mechanical parts of the Boresight Telescope shall be free from broken parts, poor workmanship or functionality. When a focus target is viewed through the eyepiece end, there shall be no scratches, chips or coating deterioration which would be discernible. All burrs, sharp edges and excess material including aluminum and anodize that are discernible to the user shall be removed.

3.7.2 Markings. The Boresight Telescope shall be marked for identification in accordance with MIL-STD-130N and shall contain the following information:

a. Model name/number

b. Manufacturer's name and Cage Code

c. National Stock Number

d. Part Number.

e. Serial Number

4. VERIFICATION

TABLE I. Requirement/verification cross reference matrix

METHOD OF VERIFICATION

1 – Analysis 2 – Demonstration 3 – Examination 4 – Test

CLASSES

A – Design Verification B – First article C – Conformance

Section 3 Requirement Section

Method

Verification Methods

Verification Class

1 2 3 4 A B C

3.4 Operating requirements 4.4

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3.4.1 Parallax 4.4.1 X X X X X

3.4.2 Field of View (FOV) 4.4.2 X X X X X

3.4.3 Resolution 4.4.3 X X X X

3.4.4 Focusing Range 4.4.4 X X X X X

3.4.5 Magnification 4.4.5 X X X X

3.4.6 Diopter Range 4.4.6 X X X X X

3.4.6.1 Diopter Scale 4.4.6.1 X X X X X

3.4.7 Sealing 4.4.7 X X X X X

3.5 Interface and interoperability requirements 4.5

3.5.1 Boresight Telescope interface requirement 4.5.1 X X X X X X

3.5.2 Optical components 4.5.2 X X X X X

3.5.3 Optical coating 4.5.3 X X X X X

3.5.4 Reticle 4.5.4 X X X X X

3.5.5 Reticle adjustment 4.5.5 X X X X X

3.5.6 Reticle collimation 4.5.6 X X X X X

3.5.6.1 Reticle collimation repeatability 4.5.6.1 X X X X X

3.5.6.2 Reticle Collimation Retention 4.5.6.2 X X X X X

3.5.7 Eye relief 4.5.7 X X X X X

3.5.8 Exit pupil 4.5.8 X X X X X

3.5.9 Pressurization 4.5.9 X X X X X

3.5.10 Purging 4.5.10 X X X X X

3.5.11 Finish 4.5.11 X X X X

3.5.12 Lubricant 4.5.12 X X X X X X

3.5.13 Weight 4.5.13 X X X X

3.6 Environmental requirements 4.6

3.6.1 Operating temperature 4.6.1 X X X X X

3.6.2 Storage temperature 4.6.2 X X X X X

3.6.3 Drop 4.6.3 X X X X X

3.6.4 Altitude 4.6.4 X X X X

3.6.5 Transportation Altitude 4.6.5 X X X X

3.6.6 Humidity 4.6.6 X X X X

3.6.7 Salt fog 4.6.7 X X X X

3.6.8 Blowing sand & dust 4.6.8 X X X X

3.7 Support and ownership requirements 4.7

3.7.1 Workmanship 4.7.1 X X X X

3.7.2 Markings 4.7.2 X X X X

Note:

1. Analysis = Analytical verification by mathematical analysis; statically analysis; evaluation of the correlation of measured data and observed test results with calculated expected value;

conformance of end item with Government approved configuration item specifications and documentation.

2. Demonstration = The equipment shall be exercised to verify that functional requirements have been met.

3. Examination = Non-destructive visual, auditory, olfactory, tactile, simple physical manipulations, gauging and measuring inspections.

4. Test = Verification by actual measurement that the equipment meets the requirements of the

- 8 -specification when subjected to the actual conditions (or simulated conditions) specified.

TABLE II. Conformance inspection test quantity matrix

Section 3 Requirement Section 4 Method

Conformance inspection

3.4.1 Parallax 4.4.1 A

3.4.2 Field of View (FOV) 4.4.2 A

3.4.3 Resolution 4.4.3 A

3.4.4 Focusing Range 4.4.4 B

3.4.5 Magnification 4.4.5 B

3.4.6 Diopter Range 4.4.6 B

3.4.6.1 Diopter Scale 4.4.6.1 B

3.4.7 Sealing 4.4.7 B

3.5.2 Optical components 4.5.2 A

3.5.3 Optical coating 4.5.3 A

3.5.4 Reticle 4.5.4 A

3.5.5 Reticle adjustment 4.5.5 A

3.5.6 Reticle collimation 4.5.6 A

3.5.6.1 Reticle collimation repeatability 4.5.6.1 A

3.5.6.2 Reticle Collimation Retention 4.5.6.2 B

3.5.7 Eye relief 4.5.7 B

3.5.8 Exit pupil 4.5.8 B

3.5.9 Pressurization 4.5.9 A

3.5.10 Purging 4.5.10 B

3.5.11 Finish 4.5.11 B

3.5.12 Lubricant 4.5.12 B

3.5.13 Weight 4.5.13 B

3.6.1 Operating temperature 4.6.1 B

3.6.2 Storage temperature 4.6.2 B

3.6.3 Drop 4.6.3 B

3.7.1 Workmanship 4.7.1 A

3.7.2 Markings 4.7.2 A

Note: A = 100% inspection required.

B = Conformance inspection to be performed as per 4.3.1

TABLE III. Sequence of Operational Test to be Performed following Environmental Test

Reticle 4.5.4 Reticle Collimation Retention 4.5.6 Reticle Collimation Repeatability 4.5.6.1 Diopter Range 4.4.6

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Diopter Scale 4.4.6.1 Eye relief 4.5.7 Exit Pupil 4.5.8 Parallax 4.4.1 Resolution 4.4.3 Reticle Adjustment 4.5.5 Lubricant 4.5.1 Field of View 4.4.2 Focusing Range 4.4 Weight 4.5.13 Pressurization* 4.5.9 Sealing* 4.4.7 Purging * 4.5.10 Reticle Collimation 4.5.6 Magnification 4.4.5 Markings 4.7.2 Workmanship 4.7.1 Optical Components 4.5.2 Optical Coating 4.5.3 Finish 4.5.11

Note: *May be completed prior to 1st environmental test and following last environmental test. If a failure occurs at the end of testing, the entire environmental test sequence may need to be repeated.

4.1 Design verification. When specified in the contract or purchase order, design verification will be performed by analysis, demonstration, examination and tests of all performance requirements in accordance with TABLE I.

4.1.1 Design verification test rejection. If a sample fails to meet any specified performance requirement, the design shall be rejected.

4.2 First article inspection. When specified in the contract or purchase order, first article inspection of sample items shall be executed by analysis, demonstration, examination and tests of all performance requirements in accordance with TABLE I.

4.2.1 Submission. The first article sample shall consist of three (3) Boresight Telescopes selected from the first 15 Boresight Telescopes produced or as otherwise specified in the contract. The first article sample shall be inspected in accordance with 4.2.

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4.2.2 Inspections to be performed. As specified in the contract or purchase order, the first article sample shall be subjected to any or all of the examinations and test specified in this specification (see Table I) and be inspected for compliance with any or all requirements of this specification and the applicable drawings. Table III shall be followed after each environmental exposure of 4.6.

4.2.3 Rejection. If any test sample fails to comply with any of the applicable requirements, the first article sample shall be rejected. The Government reserves the right to terminate inspection upon any failure of an assembly to comply with any of the requirements.

4.2.4 First article units. Boresight Telescope used in the First Article tests are not deliverable and shall be marked "Do Not Use".

4.3 Quality Conformance Inspection (QCI). QCI of lot samples shall be accomplished by analysis, demonstrations, examinations, and tests in accordance with TABLES I and II.

4.3.1 QCI Sample Size. One Boresight Telescope, as a lot sample, shall be selected from each 50 Boresight Telescopes produced or from each month's production, whichever occurs first.

Upon success of the first three consecutive lot samples, the lot size may be increased to 200 Boresight Telescopes produced or from each month's production, whichever occurs first.

If the production under a new contract follows production of the same item (using the same purchase description QCI requirements) produced for the US ARMY on the same production line with no gap in production greater than 30 days, the level of QCI required on the new contract shall be based on the level of QCI achieved in the last lots or months of production under the previous contract. Therefore, if QCI is at the reduced inspection level of 1 of 200 units on the previous contract, then that level shall remain at the initiation of the new contract. If at any time during the course of the new contract a failure during QCI occurs when at the reduced inspection level of 1 of 200 units, then the inspection level shall increase to 1 of 50 units for three consecutive successful months (not lots) before inspection level can be reduced again to 1 of 200 units.

4.3.2 QCI Failure. Whenever a nonconforming unit is found, the contractor shall withhold from acceptance all of the lot it represents and all previous or subsequent lots not yet accepted prior to the initiation and verification of corrective action. For lots withheld from acceptance, the contractor shall take the following actions:

a) Screen (100%) the lots. All quality conformance tests shall be conducted on each unit of the lot. The contractor may apply for a reduced set of tests based on root cause analysis and failure mechanism in which case a test or tests may be waived if specifically concurred on by the Government as having no possible relation to the failure. All units of product found to be nonconforming by the contractor shall be removed and kept apart from the flow of production or otherwise identified or segregated to preclude submission to the Government. The contractor may rework or repair these units unless the contract excludes such activities. Corrected product shall be screened by the contractor and resubmitted to the Government apart from the regular flow of the product with supporting documentation.

b) Determine the root cause of all non-conformances and implement appropriate process or product changes with the concurrence of the Government.

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4.4 Operating verifications.

4.4.1 Parallax. An examination and demonstration shall be performed to verify conformance to 3.4.1.

4.4.2 Field of view. A graduated cross hair target shall be used to identify the Field of View observed while looking through the boresight telescope. Verify that the observed Field of View conforms the requirements in 3.4.2.

4.4.3 Resolution. Identify the smallest pattern that can be resolved when a USAF-1951 standard resolution target in the image plane of a collimator is viewed looking through the boresight telescope. Verify conformance to 3.4.3.

4.4.4 Focusing range. Using a USAF-1951 standard resolution target set at a minimum distance of 15 meters away, identify the smallest pattern that can be resolved. Verify conformance to 3.4.4.

4.4.5 Magnification. The exit pupil shall be identified in accordance with 4.5.8. Using the result of the exit pupil and the designed value of the entrance pupil, verify conformance with 3.4.5.

4.4.6 Diopter range. Using a dioptometer, verify that a USAF-1951 standard resolution target can be brought into focus when viewed through the eyepiece of the boresight telescope.

The USAF-1951 target must be seen clearly through the boresight telescope with the diptometer set at +4 diopters, 0 diopters and -4 diopters in accordance with 3.4.7.

4.4.6.1 Diopter scale. An examination and demonstration shall be performed to verify conformance to 3.4.6.1.

4.4.7 Sealing. Submerge the boresight telescopes in a tank with a minimum depth of 1 meter of water for a minimum of 1hr. Verify that there is no evidence of a leak in accordance with 3.4.7.

4.5 Interface and interoperability verifications.

4.5.1 Boresight Telescope interface requirement. Verify the boresight fits securely in the

7.62mm stem adapter, 5.56mm stem adapter, 50 cal stem adapter, and 40mm stem adapter in accordance with 3.5.1.

4.5.2 Optical components. Certificates of Conformance from suppliers of optical components shall be provided to verify conformance to MIL-PRF-13830B.

4.5.3 Optical coating. Certificates of Conformance shall be provided to verify that optical coatings are in accordance with MIL-C-675 to verify conformance to 3.5.3.

4.5.4 Reticle. Verify that the reticle can be seen when the objective lens is covered and a flashlight is shined through the reticle illumination window in accordance with 3.5.4.

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4.5.5 Reticle adjustment. Using a pattern with increments of millimeters or seconds of arc in the horizontal and vertical directions verify conformance to 3.5.5.

4.5.6 Reticle collimation. A test fixture(s) simulating the required interface surface for securing the mechanical axis of the telescope with its stem adapter shall be used to perform this test. The telescope shall be rotated 360 degrees within the stem adapter, and reticle adjustment shall be performed. Reticle collimation is considered to be met when the reticle remains within 20 seconds of arc radius during 360 degree rotation. This test shall be repeated for all 4 stem adapters in 3.5.1.

4.5.6.1 Reticle collimation repeatability. A test fixture(s) simulating the required interface surface for securing the mechanical axis of the telescope with its stem adapter shall be used to perform this test. The telescope shall be rotated 360 degrees within its stem adapter, and reticle adjustment shall be performed. The telescope shall be removed from its stem adapter and reinserted 10 times. Reticle collimation repeatability is considered to be met when the difference in the reticle position after each reinsertion (and without readjustment) is less than 10 seconds of arc from the original position. This test shall be repeated for all 4 stem adapters in 3.5.1.

4.5.6.2 Reticle Collimation Retention. A test fixture(s) simulating the required interface surface for securing the mechanical axis of the telescope with its stem adapter shall be used to perform this test. The telescope shall be rotated 360 degrees within its stem adapter, and reticle adjustment shall be performed. The telescope shall be removed from its stem adapter and exposed to the requirements of section 3.6 (Environmental Requirements). Reticle collimation retention is considered to be met when the difference in the reticle position after exposure and reinsertion (and without readjustment) is less than 30 seconds of arc from the original position.

This test shall be repeated for all 4 stem adapters in 3.5.1.

4.5.7 Eye relief. A demonstration shall be performed to verify conformance to 3.5.7.

4.5.8 Exit Pupil. A comparator with concentric circles in 1mm increments shall be used to demonstrate conformance to 3.5.8.

4.5.9 Pressurization. Verify that the internal pressure of the boresight telescope shows no pressure drop after a minimum of 1 hr in accordance with 3.5.9.

4.5.10 Purging. An examination shall be performed to verify conformance to 3.5.10.

4.5.11 Finish. A COC shall be provided to verify conformance to 3.5.11.

4.5.12 Lubricant. An examination shall be performed to verify that all moving parts shall freely move in the condition as specified in 3.5.12. A COC shall be provided to verify conformance to 3.5.12.

4.5.13 Weight. Using a calibrated scale, verify conformance to 3.5.13.

4.6 Environmental requirements.

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4.6.1 Operating temperature.

4.6.1.1 High temperature. Expose the Boresight Telescope to the high storage temperature as specified in 3.6.2. The Boresight Telescope shall be soaked for a minimum of 5 hours after the entire assembly stabilizes at the high storage temperature. Return the Boresight Telescope to the high operating temperature cited in 3.6.1 and verify the Boresight Telescope conforms to 3.4.

4.6.1.2 Low temperature. Expose the Boresight Telescope to the low storage temperature as specified in 3.6.2. The Boresight Telescope shall be soaked for at least 5 hours after the entire assembly stabilizes at the low storage temperature. Return the Boresight Telescope to the low operating temperature cited in 3.6.1 and verify the Boresight Telescope conforms to 3.4.

4.6.2 Storage temperature. Successful completion of the high and low temperature tests of 4.6.1 verifies the conformance to the storage temperature requirement cited in 3.6.2.

4.6.3 Drop. An examination and test shall be performed to verify conformance to 3.6.3.

4.6.4 Altitude. Subject the Boresight Telescope to the altitude as specified in procedure

II, Method 500.5 of MIL-STD-810G. Adjust the chamber air pressure to the required equivalent operational altitude specified in 3.6.4. At the conclusion of the test, the Boresight Telescope shall be examined to verify conformance to requirements of 3.4.

4.6.5 Transportation Altitude. Subject the Boresight Telescope to the altitude as specified in procedure I, Method 500.5 of MIL-STD-810G. Adjust the chamber air pressure to the required equivalent operational altitude specified in 3.6.5. At the conclusion of the test, the Boresight Telescope shall be examined to verify conformance to requirements of 3.4.

4.6.6 Humidity. Subject the Boresight Telescope to the humidity test as specified in

Procedure III, Method 507.5 of MIL-STD-810G. During and after the test verify conformance to the requirements of 3.4.

4.6.7 Salt fog. Subject the Boresight Telescope to the salt test as specified in Method

509.5 of MIL-STD-810G for 48 hours. At the conclusion of the test, verify conformance to the requirements of 3.4.

4.6.8 Blowing Sand & Dust. Subject the Boresight Telescope to the blowing dust with an air velocity of 1.5 +/- 1 m/s in accordance with MIL-STD-810G Procedure I. Subject the boresight telescope to blowing sand in accordance with MIL-STD 810G Procedure II. Verify conformance to the requirements of 3.4.

4.7 Support and ownership verifications.

4.7.1 Workmanship. The Boresight Telescope shall be examined to verify conformance to 3.7.3.

- 14 -

4.7.2 Markings. The Boresight Telescope shall be examined to verify conformance to 3.7.4.

5. PACKAGING

5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or order (see 6.2). When packaging of materiel is to be performed by DoD or in-house contractor personnel, these personnel need to contact the responsible packaging activity to ascertain packaging requirements. Packaging requirements are maintained by the Inventory Control Point’s packaging activities within the Military Service or Defense Agency, or within the military service’s system commands. Packaging data retrieval is available from the managing Military Department’s or Defense Agency’s automated packaging files, CD-ROM products, or by contacting the responsible packaging activity.

6. NOTES

(This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.)

6.1 Original Application. The original application of the boresight telescope was to be used to perform the critical function of boresight alignment of the Armament Subsystem, Remotely Operated, M153; hereinafter referred to as the Common Remotely Operated Weapon Station (CROWS); during fire control system calibration procedures. CROWS, in which only one weapon is used at a time, utilizes the following weapons:

a. MK 19 MOD3, 40mm Grenade Machine Gun, NSN: 1010-01-490-9697

b. M2 Heavy Barrel, caliber 0.50, Flexible Machine Gun, NSN: 1005-00-322-

c. M240B, 7.62mm Machine Gun, with rails and bipods, NSN: 1005-01-412-

d. M249, 5.56mm Squad Automatic Weapon, with rails and bipods, NSN:

1005-01-127-7510

6.2 Acquisition requirements. Acquisition documents shall specify the following:

a. Title, number and date of this of this purchase description, and all reference documents cited in Section 2 or provided for information in Section 6.

c. Requirements for submission of first article sample.

d. Requirements for submission of inspection equipment designs.

e. Applicable stock number.

f. Packaging requirements: Packaging/Packing for the Boresight Telescope shall conform to commercial level in accordance with ASTM D3951.

g. Serialization requirements, if applicable.

h. Certificate of conformance for each lot or shipment of product.

6.3 Technical manuals. The requirement for technical manuals should be considered when this purchase description is applied on a contract. If technical manuals are required,

- 15 -specifications and standards that have been cleared and listed in DOD 5010.12, Acquisition Management Systems and Data Requirements Control List (AMSDL) shall be listed on a separate Contract Data Requirements List (DD Form 1423), which is included as an exhibit to the contract. The technical manuals shall be acquired under separate contract line item in the contract.

6.4 Submission of contractor inspection equipment designs for approval. This requirement should be considered when this specification is applied on a contract.

6.5 Submission of alternative conformance provisions. All contractor proposed alternative conformance provisions will be submitted to the Government for evaluation/approval as directed by the contracting activity.

6.6 Drawings. Drawings listed in Section 2 of this specification under the heading US Army Armament Research, Development and Engineering Center (ARDEC) may also include drawings prepared by, and identified as US Army Tank Automotive Command (TACOM), US Army Armament, Research and Development Command (ARRADCOM), Frankford Arsenal, Rock Island Arsenal or Picatinny Arsenal drawings. Technical data originally prepared by these activities is now under cognizance of ARDEC.

6.7 Subject term (key word) listing.

Boresight Telescope Alignment

6.8 Preparing activity. This purchase description was prepared by the Small Unit

Technology Branch, RDAR-WSF-N. Questions or additional information should be addressed to this office.

D

C

B

A

D

C

B

A

8 7 6 5 4 3 12

DESIGN ACTIVITY

SIZE CAGE CODE

SCALE UNIT WT.

DRAWN BY DATE(YEAR-MO-DA)

CHECKER ENGINEER

ENGINEER QUALITY ENGINEER

DRAWING APPROVAL

DESIGN APPROVALMATL ENGR MODELED BY

CONTRACT NUMBER

CONTRACTOR

SHEET

DRAWING SIZE D

TOLERANCES ON ANGLES �# �$

2 PLACE DECIMALS �#

3 PLACE DECIMALS �#

FORMAT: D_TACOM_ENG_1_0 12345678

DWG NO.

A A

B

B

8.00

.002 A

.600 +.010 -.000

4.750 +.000 -.020

.328�#.004

3.875�#.010

.232 +.002 -.000

6.000�#.120

.443 +.004 -.000

.365 +.020 -.000

.010 C

SEE NOTE 7.100�#.005

4X 90�$

.010 A

THRU.210

+.005 -.000

R CORNER.040

LENGTH F

2.000�#.050.750

.215 +.002 -.000

.750�#.015

.002 A

C

SEE NOTE 7.221

+.000 -.001

SEE NOTE 7

.212 +.000 -.002

.187�#.010

.073�#.005

R.25 +.00 -.02

LENGTH "E"

SEE NOTE 7

.375�#.010

.005 C

4X .030 +.010 -.000

(2�$59'50")

.005 A C

.208�#.002 3.00�#.01

1.125�#.030

4.200 +.010 -.000

.532 +.020 -.000

(1.492)

A

JTD2012-02-24NOR L12S3008 / 2012-02-21BB

REVISIONS

APPROVEDDATE(YEAR-MO-DA)DESCRIPTIONDRAWING REVMODEL REV

BMG2009-05-07

PRODUCT BASELINE

ERR L09S3024

AMW2010-09-15NOR L10S3083 / 2010-09-10AA

1 OF 10.000 1/1

1302275019200D

ADAPTER, BORESIGHTING,

5.56MM

US ARMY

ARMAMENT RESEARCH, DEVELOPMENT AND ENGINEERING CENTER

PICATINNY ARSENAL, NEW JERSEY 07806-5000

M. CROSSON 2009-04-30

R. ELLINGSWORTH 2009-04-30

B. BOSWELL

D. PEREIRAL. LOFTUS

2009-03-25G. STRAHL

APPLICATION

USED ONNEXT ASSY

M153 CROWS11838954

KIT, BORESIGHTING,

PMIC

MECHANICAL

PROPERTIES

YP

TS

EL2

RA

BH

RH G. STRAHL

THIRD ANGLE PROJECTION

UNLESS OTHERWISE SPECIFIED

DIMENSIONS ARE IN INCHES

DO NOT SCALE DRAWING

PART NO. 13022750

THIS DRAWING WAS GENERATED FROM A SOLID MODEL

AND IS CAD MAINTAINED. CHANGES SHALL BE

INCORPORATED BY THE DESIGN ACTIVITY.

NSN 4931-01-573-4106

NOTES:

1. APPLICABLE STANDARDS/SPECIFICATIONS:

A. ASME Y14.100-2004

B. ASME Y14.5-2009

2. MATERIAL: STEEL, T30102 PER ASTM A681.

3. HEAT TREAT TO A MINIMUM OF 55 ON

THE ROCKWELL C SCALE.

4. PROTECTIVE FINISH: OIL, SPECIFICATION

MIL-PRF-32033.

5. SURFACE FINISH: FINISH TO BE UNLESS

OTHERWISE SPECIFIED.

6. DIAMOND KNURL LENGTH "F", 96 DIAMETRAL

PITCH, PER ANSI B94.6, CLASS I TOLERANCE,

FULL FORM

.600 +.010 -.000

= DIAMETER OF WORK BEFORE KNURLING REF

.616 = KNURLED OUTSIDE DIAMETER REF

7. THE .221, .212, AND .100 DIAMETERS ARE TO BE

HELD TO THEIR RESPECTIVE TOLERANCE ONLY PRIOR

TO THE .030+.010 WIDE SLOTS BEING MACHINED.

THIS NOTE IS APPLICABLE TO LENGTH "E" AREA

ONLY. LENGTH "E'" TO BE .

8. BREAK ALL EDGES .005 - .010

UNLESS OTHERWISE SPECIFIED.

9. IDENTIFY PER MIL-STD-130.

10. QUALITY ASSURANCE PROVISION REQUIREMENTS

PER DRAWING NUMBER 12993884 APPLY.

DISTRIBUTION STATEMENT A.

APPROVED FOR PUBLIC RELEASE;

DISTRIBUTION IS UNLIMITED.

.01 .005

SEE DETAIL B

TAPER THIS

DISTANCE

.005 A C

2X R

RADIUS AT BOTTOM OF SLOTS IS ACCEPTABLE

SECTION A-A

SCALE 2/1

0.6283�#.0014:12.0000

ANGULAR VARIATION TO MATCH

DRILL POINT USED IS ACCEPTABLE

DETAIL B

SCALE 4/1

TRANSITION EDGE

OPTIONAL

TAPER BETWEEN

.221 AND .215

SECTION B-B

SCALE 4/1

A

D

D

C

B

A

CONTRACT NUMBER

CAGE CODESIZE

SCALE UNIT WT.

DESIGN ACTIVITY

CONTRACTOR

DRAWN BY DATE(YEAR-MO-DA)

CHECKER ENGINEER

ENGINEER QUALITY ENGINEER

DRAWING APPROVAL

DESIGN APPROVAL

B

MODELED BYMATL ENGR

SHEET

TOLERANCE ON ANGLES �# �$

2 PLACE DECIMALS �#

3 PLACE DECIMALS �#

FORMAT: C_TACOM_ENG_1_0

DRAWING SIZE C

DWG NO.

A

A

4.810

.002 A

.625�#.005

9.46

.450�#.003

5.955

.171�#.001

SPHERICAL

SEE NOTE 7

.511

.510

SEE NOTE 7

.390 +.010 -.000

.002 A

C

.510 +.001 -.000

.335 +.005 -.000

.443 +.004 -.000

.365 +.020 -.000

.014 C

SEE NOTE 7

.250�#.003

45�$ X .045

1.938

.750

1.125�#.030

.180

6X 60�$

3X .360 +.005 -.000

"E" .650�#.010

6X 60�$

.005 C

6X .040�#.005

.010 A

THRU.210

+.005 -.000

(.015)

3.000�#.010

LENGTH F

2.00�#.05.750

(2�$59'50")

4.250 +.020 -.000

1.000

(1.492)

A

JTD2012-02-24NOR L12S3008 / 2012-02-21

1 OF 11/1

1302275119200C

ADAPTER, BORESIGHTING,

.50 CAL

US ARMY

ARMAMENT RESEARCH, DEVELOPMENT AND ENGINEERING CENTER

PICATINNY ARSENAL, NEW JERSEY 07806-5000

2009-04-30L. MORSE

2009-04-30B. BOSWELL

2009-03-25G. STRAHL

G. STRAHL

THIRD ANGLE PROJECTION

UNLESS OTHERWISE SPECIFIED

DIMENSIONS ARE IN INCHES

DO NOT SCALE DRAWING

APPLICATION

USED ONNEXT ASSY

M153 CROWS

11838954

KIT, BORESIGHTING,

PMIC

MECHANICAL

PROPERTIES

YP

TS

EL2

RA

BH

RH

REVISIONS

APPROVEDDATE(YEAR-MO-DA)DESCRIPTIONDRAW REVMODEL REV

BMG2009-05-07

PRODUCT BASELINE

ERR L09S3024

AMW2010-09-15NOR L10S3083 / 2010-09-10AA

BB

PART NO. 13022751

THIS DRAWING WAS GENERATED FROM A SOLID MODEL

AND IS CAD MAINTAINED. CHANGES SHALL BE

INCORPORATED BY THE DESIGN ACTIVITY.

NSN 1005-01-573-0374

.01 .005

NOTES:

1. APPLICABLE STANDARDS/SPECIFICATIONS:

A. ASME Y14.100-2004

3. HEAT TREAT TO A MINIMUM OF 55 ON

4. PROTECTIVE FINISH: OIL, FEDERAL

SPECIFICATION MIL-PRF-32033.

6. DIAMOND KNURL LENGTH "F", 96 DIAMETRAL

PITCH, PER ANSI B94.6, CLASS I TOLERANCE,

FULL FORM.

.625�#.005 = DIA BEFORE KNURLING REF

.641 = KNURLED OUTSIDE DIAMETER REF

7. THE .510, .390, AND .250 DIAMETERS ARE

TO BE HELD TO THEIR RESPECTIVE TOLERANCE

ONLY PRIOR TO THE .040�#.005 WIDE SLOTS

BEING MACHINED. THIS NOTE IS

APPLICABLE TO LENGTH "E" AREA ONLY.

8. BREAK ALL EDGES .005 - .010 UNLESS

OTHERWISE SPECIFIED.

9. IDENTIFY PER MIL-STD-130.

10. QUALITY ASSURANCE PROVISION REQUIREMENTS

PER DRAWING NUMBER 12993884 APPLY.

DISTRIBUTION STATEMENT A.

APPROVED FOR PUBLIC RELEASE;

DISTRIBUTION IS UNLIMITED.

0.6283�#.0014:12.0000

R .040 .030

.005 A C

2X R

ANGULAR VARIATION TO MATCH DRILL

POINT USED IS ACCEPTABLE

SECTION A-A

SCALE 2/1

SEE NOTE 6

OPTIONAL INDEXING FLATS

RADIUS AT BOTTOM OF SLOTS IS ACCEPTABLE

B

A

D

C

B

A

8 7 6 5 4 3 12

DESIGN ACTIVITY

SIZE CAGE CODE

SCALE UNIT WT.

DRAWN BY DATE(YEAR-MO-DA)

CHECKER ENGINEER

ENGINEER QUALITY ENGINEER

DRAWING APPROVAL

DESIGN APPROVALMATL ENGR MODELED BY

CONTRACT NUMBER

CONTRACTOR

SHEET

DRAWING SIZE D

TOLERANCES ON ANGLES �# �$

2 PLACE DECIMALS �#

3 PLACE DECIMALS �#

FORMAT: D_TACOM_ENG_1_0 12345678

DWG NO.

A

A

17.00

.002 A

1.00

.002 A

C

SEE NOTE 7

1.605 +.000 -.001

.960

1.500 7.700�#.015

6.500�#.015

20�$35�$ 1.490

1.0005�$52'�#0�$30'

1.688 +.005 -.000

R.218 R.125

.445�#.002 .365

+.020 -.000

(1.528)

.014 C

SEE NOTE 7

.499 +.001 -.002

"E" 2.300

8X 45�$

.005 C

8X

SEE NOTE 7

.105�#.005

4.000

1.250

4X .950 +.005 -.000

(.312)

8X 45�$

.475

(.025)

1.125�#.030

3.000�#.010

.010 A

THRU.210

+.005 -.000

LENGTH "F"

2.75�#.05.20

.80

LENGTH "G"

SEE NOTE 11

(2�$59'50")

4.700�#.020

2.500�#.020

A

JTD2012-02-24NOR L12S3008 / 2012-02-21

REVISIONS

APPROVEDDATE(YEAR-MO-DA)DESCRIPTIONDRAWING REVMODEL REV

BMG2009-05-07

PRODUCT BASELINE

ERR L09S3024

AMW2010-09-15NOR L10S3083 / 2010-09-10AA

BB

1 OF 1 1/1

1302275219200D

ADAPTER, BORESIGHTING,

40MM

US ARMY

ARMAMENT RESEARCH, DEVELOPMENT AND ENGINEERING CENTER

PICATINNY ARSENAL, NEW JERSEY 07806-5000

L. MORSE 2009-04-30

B. BOSWELL 2009-04-30

2009-03-25G. STRAHL

APPLICATION

USED ONNEXT ASSY

M153 CROWS

11838954

KIT, BORESIGHTING,

PMIC

MECHANICAL

PROPERTIES

YP

TS

EL2

RA

BH

RH G. STRAHL

THIRD ANGLE PROJECTION

PART NO. 13022752

THIS DRAWING WAS GENERATED FROM A SOLID MODEL

AND IS CAD MAINTAINED. CHANGES SHALL BE

INCORPORATED BY THE DESIGN ACTIVITY.

NSN 4931-01-573-4107

NOTES:

1. APPLICABLE STANDARDS/SPECIFICATIONS:

A. ASME Y14.100-2004

3. HEAT TREAT TO A MINIMUM OF 50 ON

4. PROTECTIVE FINISH: OIL, FEDERAL

SPECIFICATION MIL-PRF-32033.

6. DIAMOND KNURL LENGTH "F", 96 DIAMETRAL

PITCH, PER ANSI B94.6, CLASS I TOLERANCE,

FULL FORM

1.00�#.01 = DIAMETER BEFORE KNURLING REF

1.03 = KNURLED OUTSIDE DIAMETER REF

DISTRIBUTION STATEMENT A.

APPROVED FOR PUBLIC RELEASE;

DISTRIBUTION IS UNLIMITED.

7. THE 1.605 AND .499 DIAMETERS ARE TO BE

HELD TO THEIR RESPECTIVE TOLERANCE

ONLY PRIOR TO THE .105 �#.005 WIDE SLOTS

BEING MACHINED. THIS NOTE IS APPLICABLE

TO LENGTH "E" AREA ONLY.

8. BREAK ALL EDGES .005 - .010 UNLESS

OTHERWISE SPECIFIED.

9. IDENTIFY PER MIL-STD-130.

10. QUALITY ASSURANCE PROVISION REQUIREMENTS

PER DRAWING NUMBER 12993884 APPLY.

11. MANUFACTURER MAY MAKE LENGTH "G", THE DISTANCE

FROM ADAPTER END TO KNURL START, BETWEEN .20 AND .80

AS REQUIRED BY THEIR PROCESS. KNURL MAY CONTINUE INTO

AREA WHERE .210 WIDE RELEASE SLOT IS CUT AS NECESSARY

TO MEET LENGTH "F".

.01 .005

OPTIONAL INDEXING

FLATS

R.070

45�$ X .032SEE NOTE 6

.005 A C

2X R

RADIUS AT BOTTOM OF SLOTS IS ACCEPTABLE R.375�#.010

SECTION A-A

SCALE 2/1

0.6283�#.0014:12.0000

45�$ X .045

ANGULAR VARIATION TO MATCH

DRILL POINT USED IS ACCEPTABLE

ANGULAR VARIATION TO MATCH

DRILL POINT USED IS ACCEPTABLE

B

A

D

C

B

A

8 7 6 5 4 3 12

DESIGN ACTIVITY

SIZE CAGE CODE

SCALE UNIT WT.

DRAWN BY DATE(YEAR-MO-DA)

CHECKER ENGINEER

ENGINEER QUALITY ENGINEER

DRAWING APPROVAL

DESIGN APPROVALMATL ENGR MODELED BY

CONTRACT NUMBER

CONTRACTOR

SHEET

DRAWING SIZE D

TOLERANCES ON ANGLES �# �$

2 PLACE DECIMALS �#

3 PLACE DECIMALS �#

FORMAT: D_TACOM_ENG_1_0 12345678

DWG NO.

AA

D

D

B

B

GRIND RELIEF

.26 +.00 -.02

.11 +.02 -.00

.285 +.000 -.005

3.260 +.000 -.020

.285 +.000 -.010

12.00

R.32 +.00 -.02

.443 +.004 -.000

.365 +.020 -.000

.014 C

.180 +.015 -.000

LENGTH E

.48 +.04 -.00

.005 C

4X .035 +.010 -.000

.010 A

THRU.210

+.005 -.000

3.00�#.02

1.125�#.010

.002 A

.625�#.005

.100�#.010

3.86 +.02 -.00

4X 90�$

.002 A

C

.306 +.000 -.002

LENGTH "F"

2.00�#.05.750

(2�$59'50")

.73 +.04 -.00

4.480 +.012 -.000

A

1 OF 1 1/1

1302364219200D

ADAPTER, BORESIGHTING,

7.62 MM

US ARMY

ARMAMENT RESEARCH, DEVELOPMENT AND ENGINEERING CENTER

PICATINNY ARSENAL, NEW JERSEY 07806-5000

L. MORSE 2009-04-30

B. BOSWELL 2009-04-30

L. LOFTUS

2009-03-25G. STRAHL

APPLICATION

USED ONNEXT ASSY

M153 CROWS11838954

KIT, BORESIGHTING,

PMIC

MECHANICAL

PROPERTIES

YP

TS

EL2

RA

BH

RH G. STRAHL

THIRD ANGLE PROJECTION

PART NO. 13023642

THIS DRAWING WAS GENERATED FROM A SOLID MODEL

AND IS CAD MAINTAINED. CHANGES SHALL BE

INCORPORATED BY THE DESIGN ACTIVITY.

NSN 4931-01-573-4105

REVISIONS

APPROVEDDATE(YEAR-MO-DA)DESCRIPTIONDRAWING REVMODEL REV

BMG2009-05-07

PRODUCT BASELINE

ERR L09S3024

AMW2010-09-15NOR L10S3083 / 2010-09-10AA

JTD2012-02-24NOR L12S3008 / 2012-02-21BB

NOTES:

1. APPLICABLE STANDARDS/SPECIFICATIONS:

A. ASME Y14.100-2004

3. HEAT TREAT TO A MINIMUM HARDNESS OF 55

ON THE ROCKWELL C SCALE.

4. PROTECTIVE FINISH: OIL, FEDERAL SPECIFICATION

MIL-PRF-32033.

5. SURFACE FINISH: FINISH TO BE UNLESS

OTHERWISE SPECIFIED.

6. DIAMOND KNURL LENGTH "F", 96 DIAMETRAL

PITCH, PER ANSI B94.6, CLASS I TOLERANCE,

FULL FORM

.625�#.005 = DIAMETER OF WORK BEFORE KNURLING REF

.641 = KNURLED OUTSIDE DIAMETER REF

7. THE .306, .285, AND .180 DIAMETERS ARE TO BE

HELD TO THEIR RESPECTIVE TOLERANCE ONLY PRIOR

TO THE .035+.010 WIDE SLOTS BEING MACHINED.

THIS NOTE IS APPLICABLE TO LENGTH "E" AREA

ONLY.

8. BREAK ALL EDGES .005+.010 UNLESS OTHERWISE

SPECIFIED.

9. IDENTIFY PER MIL-STD-130.

10. QUALITY ASSURANCE PROVISION REQUIREMENTS

PER DRAWING NUMBER 12993884 APPLY.

DISTRIBUTION STATEMENT A.

APPROVED FOR PUBLIC RELEASE;

DISTRIBUTION IS UNLIMITED.

.01 .005

SEE DETAIL C2X R

.005 A C

SEE NOTE 6

SECTION A-A

0.6283�#.0014:12.0000

RADIUS AT BOTTOM OF SLOT

IS ACCEPTABLE

ANGULAR VARIATION TO MATCH DRILL POINT USED

IS ACCEPTABLE

DETAIL C

SCALE 4/1

R.06�#.02

SECTION D-D

SCALE 8/1

-C- SEE NOTE 7

SEE NOTE 7

SECTION B-B

SCALE 4/1

AR-PD-157 CROWS M153 Boresight Telescope May2013
U.S. ARMY ARDEC DRAWINGS
13022750
Sheet 1
Views
new_view_1
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new_view_3
B
new_view_6
new_view_7
13022751
Sheet 1
Views
new_view_1
right_2
new_view_3
new_view_4
13022752
Sheet 1
Views
new_view_1
new_view_2
new_view_3
new_view_4
new_view_5
13023642
Sheet 1
Views
new_view_1
new_view_3
C
new_view_8
new_view_11

File details come from the government source that posted it. Updated .