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National Stock Number:
5305-01-514-1091
Federal Supply Class:
5305
National Item Identification Number:
015141091
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:
| MS51491-013 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNC | | THREAD LENGTH | 0.874 INCHES MINIMUM | | FASTENER LENGTH | 1.188 INCHES MINIMUM AND | | 1.250 INCHES MAXIMUM | | MATERIAL | STEEL OVERALL | | HEAD STYLE | HEXAGON | | THREAD DIRECTION | RIGHT-HAND | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | THREAD QUANTITY PER INCH | 18 | | THREAD CLASS | 2A | | MATERIAL DOCUMENT AND CLASSIFICATION | SAE GRADE 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | ZINC OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM B633-78,FEZN,TYPE 2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL | | HEAD HEIGHT | 0.195 INCHES MINIMUM AND | | 0.211 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.489 INCHES MINIMUM AND | | 0.500 INCHES MAXIMUM | | SPEC/STD CONTROLLING DATA | | | MANUFACTURERS CODE | 96906 | | DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MS51491-013 |
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