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National Stock Number:
5305-01-293-0981
Federal Supply Class:
5305
National Item Identification Number:
012930981
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:
| 5343973 PIECE 16 | 43689 | HUNTINGTON INGALLS INC | | 5343973 PIECE 16 | 53711 | NAVAL SEA SYSTEMS COMMAND | | MIL-S-1222 TY1 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | | MIL-B-857TY3 0. 25-20UNC2AX0.75 | D9182 | ZF INDUSTRIEANTRIEBE WITTEN GMBH |
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Techincal Specification:
| FASTENER LENGTH | 0.719 INCHES MINIMUM AND 0.781 INCHES MAXIMUM | | HEAD HEIGHT | 0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM | | HEAD STYLE | HEXAGON | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | NONDEFINITIVE SPEC/STD DATA | 1 TYPE | | WIDTH BETWEEN FLATS | 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 2A | | THREAD LENGTH | 0.619 INCHES MINIMUM AND 0.781 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNC | | THREAD QUANTITY PER INCH | 20 |
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