5340-00-831-6925 COVER,ACCESS Index 5340-00-831-8200 COVER,ACCESS

National Stock Number:
5340-00-831-7052

Federal Supply Class:
5340

National Item Identification Number:
008317052

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.


Manufacturer Information:
S6165-61553-00178286SIKORSKY AIRCRAFT CORPORATION
S6165-61553-178286SIKORSKY AIRCRAFT CORPORATION


Techincal Specification:
DISTANCE FROM END TO FIRST STEP0.6230 INCHES MINIMUM AND 0.6320 INCHES MAXIMUM
END DIAMETER0.8120 INCHES NOMINAL
BORE DIAMETER0.3800 INCHES MINIMUM AND 0.3900 INCHES MAXIMUM
CHAMFER ANGLE IN DEG45.0
COUNTERBORE DIAMETER0.6820 INCHES MINIMUM AND 0.6920 INCHES MAXIMUM
COUNTERSINK ANGLE IN DEG90.0
COUNTERSINK DIAMETER0.4210 INCHES NOMINAL
COUNTERBORE LENGTH0.0040 INCHES MINIMUM AND 0.0080 INCHES MAXIMUM
DESIGN TYPESOLID
FIRST STEP DIAMETER1.3750 INCHES NOMINAL
OVERALL HEIGHT0.6770 INCHES MINIMUM AND 0.6820 INCHES MAXIMUM
MATERIAL HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM
MATERIALSTEEL
SPECIAL FEATURESNOT CASEHARDENED;MATL-STEEL MIL-S-6758 COND C
STYLE DESIGNATORSEAT


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