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National Stock Number: 5340-00-301-3984
Federal Supply Class: 5340
National Item Identification Number: 003013984
Description: SEAT,HELICAL COMPRESSION SPRING
Detail: A circular item, usually having a flat or grooved flange, boss(es), and/or counterbore designed to accommodate the end of the spring. It is used to position the spring, but does not encase the spring or restrain lateral motion. It may be used in conjunction with a RETAINER, HELICAL COMPRESSION SPRING. Excludes WASHER (1), (as modified); SEAT, BALL SOCKET and HOLDER, SPRING. See also ROTOR, ENGINE POPPET VALVE.
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Manufacturer Information:
7521939 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | 913570 | 58275 | SASCO INC CANADIAN DIV | 942A4 | 56442 | DIAMOND REO TRUCK CO |
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Techincal Specification:
BORE DIAMETER | 0.6520 INCHES NOMINAL | BORE TAPER IN DEG | 15.0 | CHAMFER ANGLE IN DEG | 5.0 | COUNTERBORE LENGTH | 0.0625 INCHES NOMINAL | COUNTERSINK ANGLE IN DEG | 45.0 | DESIGN TYPE | SOLID | DISTANCE FROM END TO FIRST STEP | 0.4568 INCHES MINIMUM AND 0.4668 INCHES MAXIMUM | FEATURES PROVIDED | CASEHARDENED | FIRST STEP DIAMETER | 1.3100 INCHES MINIMUM AND 1.3200 INCHES MAXIMUM | FIRST STEP LENGTH | 0.0800 INCHES MINIMUM AND 0.0900 INCHES MAXIMUM | MATERIAL HARDNESS RATING | 85.5 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 87.5 ROCKWELL SUPERFICIAL 15-N MAXIMUM | MATERIAL | STEEL | OVERALL HEIGHT | 0.6393 INCHES MINIMUM AND 0.6643 INCHES MAXIMUM | SEAT ANGLE IN DEG | 60.0 | SECOND END DIAMETER | 1.5000 INCHES NOMINAL | SECOND STEP DIAMETER | 1.7500 INCHES NOMINAL | STYLE DESIGNATOR | SEAT |
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