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National Stock Number:
5340-00-436-5016
Federal Supply Class:
5340
National Item Identification Number:
004365016
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:
| 65652-11255-104 | 78286 | SIKORSKY AIRCRAFT CORPORATION |
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Techincal Specification:
| END DIAMETER | 0.4000 INCHES MINIMUM AND 0.4200 INCHES MAXIMUM | | BORE DIAMETER | 0.3120 INCHES MINIMUM AND 0.3140 INCHES MAXIMUM | | COUNTERBORE DIAMETER | 0.4100 INCHES MINIMUM AND 0.4200 INCHES MAXIMUM | | COUNTERBORE LENGTH | 0.0850 INCHES MINIMUM AND 0.0950 INCHES MAXIMUM | | DESIGN TYPE | SOLID | | DISTANCE FROM END TO FIRST STEP | 0.0900 INCHES MINIMUM AND 0.1100 INCHES MAXIMUM | | FIRST STEP DIAMETER | 0.4350 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM | | FIRST STEP LENGTH | 0.0650 INCHES MINIMUM AND 0.0950 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE | | MATERIAL HARDNESS RATING | 56.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM | | MATERIAL | STEEL COMP 630 | | OVERALL HEIGHT | 0.3500 INCHES MINIMUM AND 0.3600 INCHES MAXIMUM | | SECOND STEP DIAMETER | 0.5900 INCHES MINIMUM AND 0.6100 INCHES MAXIMUM | | SPECIAL FEATURES | NOT CASEHARDENED | | STYLE DESIGNATOR | SEAT | | SURFACE TREATMENT | PASSIVATE |
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