Attachment_0004_-_M205_Tripod_Product_Requirement.pdf

PRODUCT REQUIREMENT FOR

M205 MACHINE GUN TRIPOD MOUNT

21 November 2013 (Attachment to the SOW)

1. SCOPE

1.1 Scope. This product requirement covers the requirements and identifies the verification procedures for the M205 LIGHTWEIGHT TRIPOD MOUNT (P/N 13046100). The M205 Lightweight Tripod Mount (hereafter referred to as M205 Tripod) is the primary tripod that is used with the .50 Cal Machine Guns (M2, M2A1) and the 40mm MK19 Grenade Machine Gun.

2. APPLICABLE DOCUMENTS

2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 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 5 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.

DEPARTMENT OF DEFENSE SPECIFICATIONS

MIL-W-13855 - Weapons: Small Arms and Aircraft Armament Subsystems, General Specification for

DEPARTMENT OF DEFENSE STANDARDS

MIL-STD-1916 - DOD Preferred Method for Acceptance of Product MIL-STD-109 - Quality Assurance Terms and Definitions MIL-STD-2073 - DOD Materiel Procedures for Development and Application of

Packaging Requirements MIL-STD-171 - Finishing of Metal and Wood Surfaces MIL-STD-810 - Environment Engineering Considerations and Laboratory Tests MIL-STD-130 - Identification Marking of U.S. Military Property

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

ASTM INTERNATIONAL STATNDARDS

ASTM E 1444 - Standard Practice for Magnetic Particle Testing

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

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 of these documents are those cited in the solicitation or contract.

13046100 M205 LIGHTWEIGHT TRIPOD MOUNT

12993884 General Requirements for Quality Assurance Provisions

(Small Caliber Weapon sys) AM13046100 Package Data Sheet, M205 Lightweight Tripod Mount

ARMY TECHNICAL MANUALS

9-1005-245-13&P OPERATOR’S, UNIT AND DIRECT SUPPORT

MAINTENANCE MANUAL FOR GROUND MOUNTS;

MACHINE GUN MOUNTS; AND COMBINATIONS

FOR TACTICAL/AMORED VEHICLES

9-1005-437-13&P OPERATOR AND FIELD MAINTENANCE MANUAL

FOR M205 LIGHTWEIGHT TRIPOD MOUNT

2.3 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document take precedence. Nothing in this document, however, supersedes the contract requirements, applicable laws, and regulations unless a specific exemption has been obtained.

3. REQUIREMENTS

3.1 First article inspection. Unless otherwise specified (see 6.2), a sample of the M205 Tripods shall be subjected to first article inspection in accordance with 4.2.

3.2 Conformance inspection. Unless otherwise specified (see 6.2), all M205 Tripods and components shall be subject to a conformance inspection as in accordance with 4.3.

3.3 Materials. The M205 Tripod shall conform to the materials, dimensions, conditions and construction requirements specified herein and on drawing 13046100 and drawings applicable thereto and shall be in accordance with the applicable material and construction provisions of MIL-W-13855.

3.4 Components and assemblies. The components and assemblies shall comply with all requirements specified in the contract, Drawing 13046100, all requirements specified in Section 2 of this document, all requirements specified on Drawing 12993884 (General Requirements for Quality Assurance Provisions (QAPs)), all requirements in MIL-W-13855, and all subsequent quality assurance documents and associated drawings.

3.5 Physical Characteristics.

3.5.1 System Weight. The M205 Tripod system weight shall be comprised of the M205 Tripod, an integrated Traverse and Elevation (T&E) Mechanism and a pintle. This weight shall not exceed 34 lbs.

http://astm.org/

3.5.2 Interface. The M205 Tripod Pintle shall fasten securely to the current mounting locations of the M2/M2A1 .50 Cal Machine Gun (MG) without modifications to these weapons.

The M205 Tripod components shall also be compatible with the standard current machine gun mounts and pintles (e.g. 13001176 – MOUNT, DUAL MG, MK93 and 5559332 – PINTLE, TRIPOD MOUNT). The M205 locking mechanism shall securely lock each pintle into the tripod head and shall allow quick and simple locking and unlocking of either the pintle or cradle assemblies for rapid removal.

3.5.3 Captive Pins. All M205 Tripod latches and fasteners associated with operator level use and maintenance shall be captive to prevent loss, be capable of quick release and assembly, and must be operable without the use of special tools.

3.5.4 Length Dimension. Overall length of the M205 Tripod shall not exceed 47 inches in the collapsed configuration.

3.5.5 Width Dimension. Overall width of the M205 Tripod shall not exceed 12 inches (not including the spades on the tripod legs) in the collapsed configuration.

3.5.6 Traverse. The M205 Tripod, when deployed, shall enable the M2/M2A1 and MK19 machine guns to be manipulated as follows:

a) Shall provide a minimum of +/- 400 mils traverse to the left and right of center (800 mils total) with an M2/M2A1 mounted at level (and its respective ammo bracket P/N 6650724).

b) Shall provide a minimum of +/- 375 mils traverse to the left and right of center (750 mils total) with a MK19 mounted on a MK93 at level (and its respective ammo bracket P/N 129129150).

c) Shall be capable of “free gunning” (without the use of the traverse and elevation mechanism) a total of 6400 mils.

3.5.7 Elevation. When deployed with legs fully extended, the tripod shall enable the

M2/M2A1 and MK19 machine guns to be manipulated as follows:

a) Shall provide a minimum 115 mils in elevation from horizontal.

b) Shall provide a minimum of 250 mils in depression from horizontal.

3.5.8 Traverse & Elevation Assembly. The Traverse Bar shall include an integrated

Traverse and Elevation Mechanism which permits controlled manipulation in both traverse and elevation by hand force of the Warfighter, allow for rapid and bold adjustment throughout the full range of traverse and elevation, and 1 mil fine adjustment. The traverse bar shall contain a scale capable of being read in MILS starting at 0 MILS and graduated in 10 MIL increments.

3.5.9 Leg Assemblies. The rear legs of the M205 Tripod shall be capable of independent extension and retraction and lock/secure at each of the six (6) positions to enable employment of the M2/M2A1 MG or the MK19 Grenade Machine Gun (GMG) on uneven terrain. Each leg shall have a stabilizing “foot” at the point of contact with the ground/surface that serves to stabilize the M205 Tripod during firing on hard compact surfaces and soft loose surfaces. Each leg shall lock into place in the deployed and stowed configurations. When the M205 Tripod is fully collapsed for transportation it shall meet the requirements specified in 3.5.5. The front leg(s) shall be adjustable to meet, at a minimum, angles up to 90 degrees from the plane created by the top surface of the M205 Tripod head. The locking mechanism(s) to lock the leg(s) into deployed and stowed positions shall allow for quick and rapid movements without the use of tools.

3.5.10 Pintle. The M205 Tripod Pintle shall weigh no more than 1.5 lbs.

3.5.11 Traverse Limit Stop. The M205 Tripod shall have an Adjustable Traverse Stop at the right side of the traverse bar. The Adjustable Traverse Stop should have the ability to be tightened or loosened easily and without the need for tools. When tightened, the Adjustable Traverse Stop should not move under normal operating conditions.

3.5.12 Deployed Drop Test. With the M2/M2A1 .50 Cal Machine Gun attached, the

M205 Tripod shall be capable of withstanding the impact when dropped from a height of three

(3) feet onto a medium density packed earth surface. The M205 Tripod shall be sent for Magnetic Particle Inspection to test for cracks prior to and at the conclusion of testing.

3.5.13 Stowed Drop Test. The M205 Tripod shall be capable of withstanding the impact, when dropped from a minimum height of five (5) feet in the stowed configuration on a level, concrete surface as described below. The M205 Tripod shall be sent for Magnetic Particle Inspection to test for cracks prior to and at the conclusion of testing.

a) Major axis horizontal

b) Major axis vertical, feet down

c) Major axis vertical, tri-head down

d) Major axis 45˚ from vertical, feet down

e) Major axis 45˚ from vertical, tri-head down

3.5.14 Endurance Testing. While attached to a Government standard caliber .50 cal M2 machine gun, the mount shall be capable of withstanding the firing of 10,000 rounds of Government standard caliber .50, M2 or M33 ball cartridges, using M2 or M9 links, without parts deformation, mount malfunctions or unserviceable parts (an unserviceable part is one that causes malfunctions or impairs the safety of the mount). Parts shall not loosen or move from original locations (e.g. traverse and elevation bars shall not move more than 10 mils). Firing shall be accomplished using 100 round belts. The firing schedule shall be approximately 50 rounds spasmodic fire, followed by one continuous burst for the remainder of the belt. Testing shall be as specified in 4.4.5. The M205 Tripod shall be sent for Magnetic Particle Inspection to test for cracks prior to and at the conclusion of testing.

3.5.15 Parts/Components Interchangeability. All parts and subassemblies of the M205 Tripod shall be physically and functionally interchangeable without degradation of performance.

The M205 Tripod shall have the capability of exchanging or replacing parts and modules between like M205 Tripods with no modification or adjustment to spare parts or subassemblies (SEE TABLE II for interchangeability requirements).

3.5.16 Marking. Each M205 Tripod shall have an individual marking assigned by the contractor in three places (Weldment, Trihead P/N 13046201, Weldment, Front Leg P/N 13046301,and Housing, T&E P/N 13046601). Markings shall be permanently designated (direct part marking) on the M205 Tripod in accordance with MIL-STD-130.

3.5.17 Workmanship. Workmanship shall be in accordance with the workmanship requirements of MIL-W-13855 and Drawing 12993884, General Requirements for Quality Assurance Provisions (QAPs). The cleaning method used shall not be injurious to any parts nor shall the parts be contaminated by the cleaning agent. All markings and stampings shall be neat and clearly defined. The M205 Tripod shall not present any sharp edges.

4. VERIFICATION

4.1 Classification of inspections. The following types of inspection shall be conducted:

a. First article inspection (see 4.2).

b. Conformance inspection (see 4.3).

4.2 First article inspection. When specified, a quantity of five (5) complete assemblies

(13046100) of the M205 Lightweight Tripod Mount shall be subjected to all tests in this specification and all inspections in the General Specifications. The contractor is responsible for the FAT inspection except as otherwise noted in accordance with contract requirements. The first article sample shall be representative of the manufacturing methods and processes to be used for production quantity (SEE TABLE I for testing requirements).

4.3 Conformance Inspection. All paragraphs of 4.2 apply, excluding reference to testing 100 percent of the sample quantity. Lot formation and identification must adhere to requirements set forth in MIL-STD-1916, unless otherwise specified herein. MIL-STD-1916 shall be used to classify characteristics and determine sampling plans. (See TABLE I for testing requirements).

4.3.1 Responsibility for compliance. All items shall meet all requirements of MIL-STD- 1916 and sections 3.5.1 through 3.5.17 of this document. The inspections set forth in this procedure shall become a part of the contractor's overall inspection system or quality program for final M205 Tripod assembly acceptance. The absence of any inspection requirements in the procedure shall not relieve the contractor of the responsibility of ensuring that all products or supplies submitted to the Government for acceptance comply with all requirements of the contract. Sampling inspection, as part of manufacturing operations, is an acceptable practice to ascertain conformance to requirements, however, this does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to accept defective material.

4.3.2 Requirements for Reporting Failures. Failure of products submitted to the United States Government for acceptance to meet any product requirement through inspection, testing or assembly shall require the filing of a failure analysis and proposed corrective action. The failure analysis and proposed corrective action shall be in contractor format and shall be provided to the government Quality Assurance Representative for review and approval.

4.3.2.1 Any failure during the acceptance process that affects form, fit or function shall be cause for rejection. The contractor shall be required to perform a root cause failure analysis and submit a Corrective Action Report (CAR) detailing how that cause occurred and how it will be precluded for all future hardware produced for the contract.

4.4 Examinations and Tests.

4.4.1 Failure definition for testing is defined as one or more of the following:

a. Failure to properly and securely mount all HMGs with T&Es attached.

b. Failure to deploy, secure, and collapse the LTHMG Tripod in the manner designed.

c. Failure of any leg to properly operate in the manner designed.

d. Failure of the traverse bar to allow normal T&E use as designed.

e. Failure of the traverse bar to allow for reading mil scale data as designed.

f. Failure of the tripod, or any mechanical part thereof, during a firing mission.

4.4.2 The complete M205 Lightweight Tripod Mount shall be tested in accordance with the requirements in TABLE I and TABLE II. Data shall be recorded in contractor format. The following test conditions shall apply:

4.4.2.1 Mark (I.D.) each assembly with non-permanent marking in order to remove after completion of test.

4.4.2.2 Visual inspection of workmanship, welds, parts missing or improperly assembled, coating, and markings.

4.4.2.3 Installation and movement of components: All movements, rotation, insertion and removal of pins shall be free of any binding; all pins, knobs and handles shall remain captive.

4.4.3 Magnetic particle inspection criteria: Magnetic particle inspection shall be in accordance with ASTM E 1444 with wet fluorescent solution, 600 to 800 amperes current, and using the continuous method. The magnetic particle test shall be performed on the Pintle Assembly, Traverse and Elevation Assembly, Right and Left Leg Assemblies and Tri-Head Assembly. Longitudinal magnetization shall be performed using a standard five turn magnetizing coil. No cracks shall be permissible.

4.4.4 Drop Test Requirements shall be tested in accordance with 4.4.4.1 and 4.4.4.2.

4.4.4.1 One (1) M205 Tripod selected at random shall be dropped as specified in 3.5.12 without causing any failures to the tripod as specified in 4.4.1. Magnetic particle inspection shall be in accordance with 4.4.3.

4.4.4.2 One (1) M205 Tripod selected at random shall be dropped as specified in 3.5.13 without causing any failures to the tripod as specified in 4.4.1. Magnetic particle inspection shall be in accordance with 4.4.3.

4.4.5 Endurance Testing. The same M205 Tripod used in the Stowed Drop Test (section 4.4.4.2) shall be tested for endurance (see 3.5.14) using the test method specified in 4.4.5.1. If the endurance requirements are not met, the First Article Test shall be rejected.

4.4.5.1 The .50 cal M2 to be used in the test shall be lubricated and examined prior to the test. Testing shall be accomplished with the machine gun locked on the tripod so the line of sight is approximately parallel to the ground. The feet of the tripod shall be fully extended and held in place to prevent movement of the tripod during firing. Ammunition, links and firing schedule shall be as specified in 3.5.14. At least two barrels shall be used during the test and not more than 5,000 rounds shall be fired in any one barrel for a total of 10,000 rounds. Following each 500 rounds of firing, the tripod shall be checked to assure that the elevation and traverse bars have not moved more than 10 mils from their original location. The machine gun shall be cooled to ambient temperature by forced air after each 500 rounds of firing. The machine gun shall be cleaned and oiled after each 2,500 rounds of firing, and at the close of each day’s firing the machine gun and tripod shall be protected against corrosion. Tripod parts shall not be altered and only those parts broken or worn to the extent that they are unserviceable shall be replaced.

Tripod shall be inspected visually for any defects after 2,500, 5,000, and 7,500 rounds. Magnetic particle inspection shall be in accordance with 4.4.3. Complete accurate records shall be kept for each endurance test, showing each malfunction and part replacement including the number of the round at which each occurred. Malfunctions attributable to the ammunition, links, or the test machine gun shall not be counted against the tripod being tested; however, such malfunctions shall be recorded. A failure shall be defined as specified in 4.4.1.

4.4.6 Interchangeability. Five M205 Mounts, selected at random by the Government from each inspection lot shall be tested for interchangeability. Mounts taken for interchangeability testing shall have been found satisfactory in all other examinations and tests.

Mounts shall be tested by disassembling and then reassembling parts using the parts and pre-arranged system described below in TABLE II. Interchange of parts shall be accomplished by dividing the parts of each Mount into 5 groups of non-mating parts as shown below. After disassembly and Group categorization per Table II is complete, Groups I-IV for each M205 Tripod shall remain together. Group V for each M205 Tripod shall be moved such that no individual Group V remains with its original Groups I-IV. Each of the resulting new group combinations shall be reassembled into a complete M205 Tripod. Commercial parts such as screws, nuts, washers, and pins shall be placed in the same tray as their mating or associated part.

Any commercial part rendered unserviceable by disassembly shall be replaced without penalty to the interchangeability test. The M205 Mount shall be reassembled using only those parts which are in the same tray. Each reassembled M205 Mount shall be able to pass the requirements set forth in sections 3.5.6, 3.5.7, 3.5.8 and 3.5.9 without a failure. A failure shall be defined as specified in 4.4.1.

4.5 Final Examination of M205 Lightweight Tripod Mount. The assemblies shall be examined after the completion of all testing and immediately prior to preservation and packaging. A visual inspection in accordance with MIL-W-13855 shall be performed on component parts at each examination step below for the following characteristics:

a. Cleaning, improper

b. Specified protective coating missing

c. Evidence of poor general quality

d. Manufacturing operations incomplete

e. Assembly improper

f. Evidence of poor workmanship

g. Parts damaged

h. Finish incorrect

i. Marking incorrect or illegible

M205 Tripod component parts failing to meet requirements shall be cause for rejection.

TABLE I. Requirements/Verification Cross Reference Matrix

Method of Verification 1 – Analysis 2 – Demonstration 3 – Examination 4 - Test

Class of Verification A – First Article B - Conformance

Section 3 Requirements Description

Verification method Verification Class Section 4

Verification 1 2 3 4 A B

3.1 First article inspection X X X X 4.2

3.2 Conformance inspection X X X X 4.3

3.3 Materials X X X 4.4

3.4 Components and assemblies X X X X 4.4

3.5.1 System Weight X X X 4.3.1

3.5.2 Interface X X X X 4.3.1

3.5.3 Captive Pins X X X X 4.3.1

3.5.4 Length Dimension X X X 4.3.1

3.5.5 Width Dimension X X X 4.3.1

3.5.6 Traverse X X X X 4.3.1

3.5.7 Elevation X X X X 4.3.1

3.5.8 Traverse & Elevation Assembly X X X X 4.3.1

3.5.9 Leg Assemblies X X X X 4.3.1

3.5.10 Pintle X X X 4.3.1

3.5.11 Traverse Limit Stop X X X X 4.3.1

3.5.12 Deployed Drop Test X X X X 4.4.4

3.5.13 Stowed Drop Test X X X X X 4.4.4

3.5.14 Endurance Testing X X X X 4.4.5

3.5.15 Parts/Components

Interchangeability X X X X X 4.4.6

3.5.16 Marking X X X 4.5

3.5.17 Workmanship X X X 4.5

TABLE II. Interchangeability Segregation Table

Group I – ASSY, TRIHEAD (P/N 13046200)

P/N DESCRIPTION

13046209 LUG, LEG STOP

13046210 PLATE, SERRATED

13046211 WELDMENT, FRONT LEG PIN

13046214 SLEEVE, CAM

13046215 BLOCK, CAM CLAMPING

13046216 NUT, CLAMPING, FRONT LEG

13046217 ASSY, CAM HANDLE

13046220 KINGPIN

13046221 BUSHIN, KINGPIN

13046222 NUT, KINGPIN

13046223 CLIP, KINGPIN NUT

13046224 LEVER, PINTLE LATCH

13046225 GUIDE, PINTLE LEVER

13046226 SPRING, PINTLE LATCH

13046227 SPACER, PINTLE LATCH

13046229 PIN, CAM CLAMPING

GROUP II – ASSY, REAR LEG, LEFT (P/N 13046380)

13046429 ASSY, LOWER LEFT LEG

GROUP III – ASSY, REAR LEG, RIGHT (P/N 13046480)

13046485 ASSY, UPPER REAR LEG, RIGHT

GROUP IV – ASSY, T&E MECHANISM (P/N 13046600)

13046602 TRAVERSE COVER W/SCALE, READER, TRAVERSE (P/N 13046622)

13046614 GLIDE

13046616 ASSY, TAPERED BEARING

13046618 ASSY, STRAIGHT BEARING

13046620 ASSY, ACTUATOR, TRAVERSE

13046623 ELEVATION COVER

13046631 ASSY, ACTUATOR, ELEVATION

13046635 WASHER, RIGHT

13046636 WASHER, LEFT

13046637 WASHER, CENTER

13046638 PIVOT BEARING

13046639 SPRING, BALE

13046645 ASSY, ELEVATION BRACKET

13046656 BUTTON, TRAVERSE BAR

13046657 ASSY, LIMIT STOP CLAMP

Group V – MOVING GROUP

P/N DESCRIPTION

13046102 ASSY, PINTLE

13046201 WELDMENT, TRIHEAD

13046228 SLIDER, PINTLE LOCK

13046300 ASSEMBLY, FRONT LEG

13046385 ASSY, UPPER REAR LEG, LEFT

13046508 ASSY, LOWER RIGHT LEG

13046601 HOUSING, T&E W/SCALE, READER ELEVATION (P/N 13046663)

13046603 ASSY, TRAVERSE BAR

13046606 ASSY, TRAVERSE HANDLE

13046624 ASSY, ELEVATION BAR

13046634 HANDLE, ELEVATION

5. PACKAGING

5.1 Unless otherwise specified in the contract, inspections to determine compliance with preservation, packing, and marking requirements of the applicable contract packaging documentation, (Special Packaging Instructions, SPI) for the level designated in the contract, shall be as specified in MIL-STD-2073. Pilot Pack will be inspected as part of First Article.

6. NOTES

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

6.1 Intended use. Assemblies and components covered by this document are intended for use with small arms ammunition and small arms weapons.

6.2 Acquisition requirements. Acquisition documents shall specify the following:

a. Title, number and date of this specification.

b. Requirements for submission of first article sample.

c. Conformance verification.

d. Packaging requirements (see 5.1). Reference SPI 13046100.

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

6.4 Submission of contractor inspection equipment designs for approval. Submit copies of designs as required to: Commander, U.S. Army ARDEC, ATTN: RDAR-QEW-C, Picatinny Arsenal, NJ 07806-5000. This address will be specified on the Contract Data Requirements List, DD Form 1423 in the contract.