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National Stock Number:
5340-00-721-5103
Federal Supply Class:
5340
National Item Identification Number:
007215103
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:
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Techincal Specification:
| END DIAMETER | 0.5200 INCHES MINIMUM AND 0.5400 INCHES MAXIMUM | | BORE DIAMETER | 0.4325 INCHES NOMINAL | | BORE TAPER IN DEG | 7.0 | | CHAMFER ANGLE IN DEG | 7.0 | | COUNTERBORE DIAMETER | 0.6600 INCHES NOMINAL | | COUNTERSINK ANGLE IN DEG | 45.0 | | COUNTERSINK DIAMETER | 0.4850 INCHES NOMINAL | | COUNTERBORE LENGTH | 0.0470 INCHES NOMINAL | | DESIGN TYPE | SOLID | | DISTANCE FROM END TO FIRST STEP | 0.1260 INCHES MINIMUM AND 0.1860 INCHES MAXIMUM | | FIRST STEP DIAMETER | 0.7400 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM | | FIRST STEP LENGTH | 0.0470 INCHES MINIMUM AND 0.0770 INCHES MAXIMUM | | FSC APPLICATION DATA | CYLINDER HEAD ASSY,DIESEL ENGINE | | OVERALL HEIGHT | 0.3030 INCHES MINIMUM AND 0.3530 INCHES MAXIMUM | | MATERIAL HARDNESS RATING | 30.0 ROCKWELL B MINIMUM AND 65.0 ROCKWELL B MAXIMUM | | MATERIAL | STEEL | | SEAT ANGLE IN DEG | 80.0 | | SECOND END DIAMETER | 1.0400 INCHES NOMINAL | | SECOND STEP DIAMETER | 1.0500 INCHES MINIMUM AND 1.0700 INCHES MAXIMUM | | SPECIAL FEATURES | MATL-STEEL FED-STD-66 AISI/SAE 1010;NOT CASEHARDENED | | STYLE DESIGNATOR | SEAT |
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