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National Stock Number:
5305-01-056-1501
Federal Supply Class:
5305
National Item Identification Number:
010561501
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:
| 274825 | 16004 | DAVEY COMPRESSOR CO DIV OF KECO INDUSTRIES INC | | 274825 | 24617 | GENERAL MOTORS CORP | | C-81.121-274825 | 24617 | GENERAL MOTORS CORP | | 274825 | 29215 | JENNY PRODUCTS, INC | | 88-20260-32 | 30554 | DEPARTMENT OF DEFENSE PROJECT MANAGER-MOBILE ELECTRIC POWER | | 274825 | 7X677 | GENERAL MOTORS LLC |
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Techincal Specification:
| EXTENDED WASHER DIAMETER | 0.513 INCHES MINIMUM AND 0.531 INCHES MAXIMUM | | EXTENDED WASHER THICKNESS | 0.019 INCHES MINIMUM AND 0.028 INCHES MAXIMUM | | FASTENER LENGTH | 0.720 INCHES MINIMUM AND 0.750 INCHES MAXIMUM | | HARDNESS RATING | 22.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OVERALL | | HEAD HEIGHT | 0.204 INCHES MINIMUM AND 0.222 INCHES MAXIMUM | | HEAD STYLE | HEXAGON EXTENDED WASHER | | MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 1018 OR STEEL COMP 1021 OR STEEL COMP 1022 OVERALL | | MINIMUM TENSILE STRENGTH | 115000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SPECIAL FEATURES | WASHER BEARIN SURFACE SERRATED | | WIDTH BETWEEN FLATS | 0.367 INCHES MINIMUM AND 0.375 INCHES MAXIMUM | | SURFACE TREATMENT | ZINC OVERALL | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.670 INCHES MINIMUM AND 0.750 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNC |
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