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National Stock Number:
5305-00-439-6241
Federal Supply Class:
5305
National Item Identification Number:
004396241
Description:
SCREW,CAP,HEXAGON HEAD
Detail:
An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, MACHINE; BOLT, EXTERNALLY RELIEVED BODY; BOLT, INTERNAL WRENCHING; and SCREW, CAP, SOCKET HEAD.
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Manufacturer Information:
| 8744246 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | | 9416867 | 24617 | GENERAL MOTORS CORP |
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Techincal Specification:
| EXTENDED WASHER DIAMETER | 0.686 INCHES MINIMUM AND 0.706 INCHES MAXIMUM | | EXTENDED WASHER THICKNESS | 0.056 INCHES MINIMUM AND 0.071 INCHES MAXIMUM | | FASTENER LENGTH | 0.359 INCHES MINIMUM AND 0.500 INCHES MAXIMUM | | FEATURES PROVIDED | UNFINISHED HEAD | | HEAD HEIGHT | 0.259 INCHES MINIMUM AND 0.274 INCHES MAXIMUM | | HEAD STYLE | HEXAGON EXTENDED WASHER | | LOCKING FEATURE | DETENT BALL BEARING SURFACE OF HEAD | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-634 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 1018 OVERALL | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | THREAD CLASS | 2A | | THREAD LENGTH | 0.359 INCHES MINIMUM AND 0.389 INCHES MAXIMUM | | THREAD DIRECTION | RIGHT-HAND | | THREAD QUANTITY PER INCH | 18 | | THREAD SERIES DESIGNATOR | UNC | | WIDTH BETWEEN FLATS | 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM |
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