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National Stock Number:
5305-01-351-0786
Federal Supply Class:
5305
National Item Identification Number:
013510786
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:
| 3180995-5 | 10001 | NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJC | | THREAD LENGTH | 0.670 INCHES NOMINAL | | FASTENER LENGTH | 0.820 INCHES NOMINAL | | MATERIAL | PLASTIC POLYAMIDE LOCKING FEATURE | | NICKEL ALLOY K-500 FASTENER | | HEAD STYLE | HEXAGON | | THREAD DIRECTION | RIGHT-HAND | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 20 | | THREAD CLASS | 3A | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-286 CLA FED SPEC SINGLE MATERIAL RESPONSE FASTENER | | HARDNESS RATING | 24.0 ROCKWELL C MINIMUM FASTENER | | HEAD HEIGHT | 0.150 INCHES MINIMUM AND | | 0.156 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.428 INCHES MINIMUM AND | | 0.438 INCHES MAXIMUM | | LOCKING FEATURE | PELLET THREADS | | FEATURES PROVIDED | DRY FILM LUBRICANT |
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