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National Stock Number:
5305-00-422-1161
Federal Supply Class:
5305
National Item Identification Number:
004221161
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:
| 7971324 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |
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Techincal Specification:
| FASTENER LENGTH | 2.750 INCHES NOMINAL | | FEATURES PROVIDED | CASEHARDENED | | HARDNESS RATING | 16.0 ROCKWELL C NOMINAL OVERALL | | HEAD HEIGHT | 0.391 INCHES NOMINAL | | HEAD STYLE | HEXAGON | | MATERIAL | STEEL OVERALL | | MINIMUM TENSILE STRENGTH | 100000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.625 INCHES | | WIDTH BETWEEN FLATS | 0.938 INCHES NOMINAL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2 FED SPEC ALL TREATMENT RESPONSES OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 2.250 INCHES MINIMUM | | THREAD QUANTITY PER INCH | 18 | | THREAD SERIES DESIGNATOR | UNF |
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