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National Stock Number:
5305-00-282-9647
Federal Supply Class:
5305
National Item Identification Number:
002829647
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:
| FF-S-85 | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC | | MS35311-39 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| DEPARTURE FROM CITED DOCUMENT | AS MODIFIED BY MATERIAL | | FASTENER LENGTH | 1.750 INCHES NOMINAL | | FEATURES PROVIDED | FINISHED HEAD | | HEAD HEIGHT | 0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM | | HEAD STYLE | HEXAGON | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 FED SPEC ALL MATERIAL RESPONSES OVERALL | | MATERIAL | NICKEL ALLOY 400 OR NICKEL ALLOY R-405 OVERALL | | MINIMUM TENSILE STRENGTH | 70000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | NONDEFINITIVE SPEC/STD DATA | 2 TYPE AND 10P STYLE | | WIDTH BETWEEN FLATS | 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.875 INCHES MINIMUM | | THREAD QUANTITY PER INCH | 18 | | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
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