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National Stock Number:
5305-01-447-3326
Federal Supply Class:
5305
National Item Identification Number:
014473326
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:
| 211068663 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 595-6401267 ITEM 126 | 53711 | NAVAL SEA SYSTEMS COMMAND |
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Techincal Specification:
| FASTENER LENGTH | 2.750 INCHES NOMINAL | | HARDNESS RATING | 24.0 ROCKWELL C MINIMUM OVERALL | | HEAD HEIGHT | 0.348 INCHES MINIMUM AND 0.371 INCHES MAXIMUM | | HEAD STYLE | HEXAGON | | LOCKING FEATURE | PATCH OR PELLET OR STRIP THREADS | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-286 FED SPEC SINGLE MATERIAL RESPONSE FASTENER | | MATERIAL | NICKEL ALLOY K-500 FASTENER | | MATERIAL | PLASTIC POLYAMIDE (NYLON) LOCKING FEATURE | | MINIMUM TENSILE STRENGTH | 130000 POUNDS PER SQUARE INCH | | MINIMUM YIELD STRENGTH | 90000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.562 INCHES | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 1.375 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 12 | | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) | | WIDTH BETWEEN FLATS | 0.798 INCHES MINIMUM AND 0.812 INCHES MAXIMUM |
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