A03_Drawing_Distro_A_12593036_E.pdf

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8 7 6 5 4 3 2 1DRAWING SIZE F

SIZE CAGE CODE

SCALE SHEET

FORMAT: F_TACOM_ENG_1_0

UNIT WT.

DESIGN ACTIVITYCONTRACT NUMBER

CONTRACTOR

DRAWN BY DATE (YEAR-MO-DA)

CHECKER ENGINEER

ENGINEER QUALITY ENGINEER

DRAWING APPROVAL

DESIGN APPROVAL

THIRD ANGLE PROJECTION

MATL ENGR MODELED BY

UNLESS OTHERWISE SPECIFIED

DIMENSIONS ARE IN INCHES

TOLERANCES ON ANGLES �#� �$�

2 PLACE DECIMALS �#�

3 PLACE DECIMALS �#�

PMIC

12345678

DWG NO.

MAX.398

BAC2017-05-31 NOR L16A2060 / 2017-05-26 E

DRACO SPRING

P.O. BOX 266086

7042 LONG DRIVE

HOUSTON, TX 77027-6086

0RAL6 12593036

19200SOCN12593036

MFR-0RAL6

(5.60)

(6.98)

(13.01)

RATE OVER THIS RANGE TO BE (338.29)

.40 .10

.50

REVISIONS

APPROVEDDATE(YEAR-MO-DA)DESCRIPTIONDRAWING REV

RLV2007-02-05

REDRAWN WITH CHANGE

NOR L07A2002 / 2007-01-30

B

RLV2009-02-06NOR L08A2082 / 2009-01-28C

BMG2013-05-07NOR L13A2003 / 2013-04-18D

1 OF 121.499 0.500

1259303619200F

SPRING, HELICAL

COMPRESSION REAR

US ARMY

ARMAMENT RESEARCH, DEVELOPMENT AND ENGINEERING CENTER

PICATINNY ARSENAL, NEW JERSEY 07806-5000

J.MORONEY 1999-01-15

J. GOOCH J.P. GLICK

J. BLECKER 2007-01-30

A. LENNOX 2007-01-30

DO NOT SCALE DRAWING

J.P. GLICK

M119A1/A2/A3

12591204 105MM HOW.

NEXT ASSY USED ON

APPLICATION

A

MECHANICAL

PROPERTIES

YP

TS

EL2

RA

BH

RH

PART NO. 12593036

THIS DRAWING WAS GENERATED FROM A SOLID MODEL

AND IS CAD MAINTAINED. CHANGES SHALL BE

INCORPORATED BY THE DESIGN ACTIVITY.

NSN

SPRING DATA

BAR DIAMETER 0.820

FREE LENGTH (APPROX) 19.000 IN.

*ASSEMBLED HEIGHT 13.010

*ASSEMBLED LOAD 2026.030

*OPERATING HEIGHT 6.980

*OPERATING LOAD 4066.260

SPRING RATE RANGE (REF) 338.291 LB/IN.

*INNER DIAMETER 5.890

END CONSTRUCTION SEE NOTE 5

TOTAL NUMBER OF COILS 7.500

APPROVED SOURCE(S) OF SUPPLY

PART NO.

VENDOR VENDOR

PART NO.

ITEM

IDENTIFICATIONADDRESS CAGE CODE

12593036

STANDARD CAR TRUCK CO.

ONE MCCANDLESS AVE

PITTSBURGH, PA 15201-2631

3J637 12593036

19200SOCN12593036

MFR-3J637

NOTES:

1. APPLICABLE STANDARDS/SPECIFICATIONS:

A. DOD-STD-00100D(AR)

B. ANSI Y14.5M-1982

2. MATERIAL: STEEL, ASTM A689: UNS H51600.

3. UNLESS OTHERWISE SPECIFIED, ALL EDGES AND CORNERS

SHALL BE BROKEN .02 MAX.

4. FINISH GROUND WHERE SPECIFIED.

5. MANUFACTURE IN ACCORDANCE WITH ASTM A125 WITH

THE FOLLOWING EXCEPTIONS:

A. NO COMPLETE DECARBURIZATION ALLOWED.

PARTIAL DECARBURIZATION TO .005 INCHES

DEPTH IS ALLOWABLE.

B. ENDS TO BE CLOSED AND GROUND SQUARE TO

THE AXIS OF THE SPRING WITH 1.5�$� AND

LEAVING 300�$� �#� 25�$� GRIND AREA AT EACH END.

C. MAGNETIC PARTICLE INSPECTION REQUIRED BY THE

WET METHOD PER ASTM E709. INDICATIONS NOT TO

EXCEED 1/16 INCH IN LENGTH.

D. ALL LOOSE SURFACE SCALE MUST BE REMOVED.

6. THIS SPRING WILL REMAIN COMPRESSED AT THE LOADS

SHOWN FOR LONG PERIODS OF TIME AND REQUIRE HEAT

TREATMENT AND PRESETTING TO ATTAIN MAXIMUM RESISTANCE

TO FURTHER SET-DOWN IN SERVICE COMPATIBLE WITH

SLOW CYCLING BETWEEN MAXIMUM AND MINIMUM LOADS.

7. AFTER HEAT TREATMENT AND PRIOR TO SHOT PEENING

THE HARDNESS TO BE RHC 47 TO 50.

8. COILING ALLOWANCE: ALLOWANCE FOR INCREASE IN COIL

DIAMETER DURING PRESETTING MAY BE NECESSARY TO

RETAIN THE SPRING RATE.

9. SHOT PEEN IN ACCORDANCE WITH SAE AMS 2430N, ALMEN

STRIP INTENSITY .012-.018A 200% MIN. COVERAGE.

USE CAST SHOT PER SAE AMS 2430N. COVERAGE AND APPEARANCE

SHALL BE CHECKED USING 4.3.1 OF SAE 2430N.

10 ITEM IDENTIFICATION: STAMP OR ENGRAVE THE

FOLLOWING MARKINGS IN ACCORDANCE WITH MIL-STD-130.

"19200SOCN12593036"

MFR-(CAGE CODE)

11. APPLY OIL AFTER SHOT PEENING AND PRIOR TO APPLICATION

OF FINAL PROTECTIVE FINISH IF THE FINAL PROTECTIVE

FINISH IS NOT APPLIED WITHIN 24 HOURS.

12A.PROTECTIVE FINISH: APPLY COATING MIL-C-81751, TYPE I,

CLASS 4 (.002 THICK MAX.) EXCEPT USE A CURING

TEMPARATURE OF 297�$�C�#�3�$�C (566.5�$�F�#�5.5�$�F) FOR A

MINIMUM OF 2 HOURS.

12B.PRIOR TO PAINT CHEM FILM CHROMATE FINISH 7.3.3, THEN

PAINT PER 20.24 (.003 THICK MAX.) OF MIL-STD-171.

13. AFTER SHOT PEENING, SPRING TO HAVE 5 FULL COMPRESSION

REVERSALS AND THEN HELD AT FULL LOAD CONDITION

(I.E. 6.98 IN DEFLECTED LENGTH) FOR ONE WEEK. TEST

SAMPLING OF 2% PER BATCH IS SATISFACTORY.

14. DIMENSIONAL LIMITS AND SURFACE TEXTURE APPLY

WITHOUT SHOT PEENING AND PROTECTIVE FINISH

EXCEPT FOR SPRING DATA INDICATED THUS *.

15. QUALITY ASSURANCE PROVISIONS (QAP) 12593036 APPLY

TO THIS ITEM.

16. IDENTIFICATION OF THE "APPROVED SOURCE(S) OF SUPPLY"

HEREON IS NOT TO BE CONSTRUED AS A GUARANTEE OF

PRESENT OR CONTINUED AVAILABILITY AS A SOURCE OF

SUPPLY FOR THE ITEM(S).

17. ONLY THE ITEM DESCRIBED ON THIS DRAWING WHEN

PROCURED FROM THE VENDOR(S) LISTED HEREON

IS APPROVED BY US ARMY ARMAMENT RESEARCH, DEVELOPMENT

AND ENGINEERING CENTER, PICATINNY ARSENAL, NJ 07806-5000

FOR USE IN THE APPLICATION(S) SPECIFIED HEREON. A

SUBSTITUTE ITEM SHALL NOT BE USED WITHOUT PRIOR APPROVAL

BY US ARMY ARMAMENT RESEARCH, DEVELOPMENT AND ENGINEERING

CENTER, PICATINNY ARSENAL, NJ 07806-5000.

DISTRIBUTION STATEMENT A

APPROVED FOR PUBLIC RELEASE;

DISTRIBUTION IS UNLIMITED

(4066.260) LBS

(2026.030) LBS

SOURCE CONTROL DRAWING

SEE DETAIL A

SPRING TO BE LEFT HAND WOUND

8X R .12�#�.03

ISOMETRIC VIEW

SCALE 0.250

FOR REFERENCE ONLY

DETAIL A

SCALE 1.000

2 PLACES

R

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