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National Stock Number:
5305-00-022-0493
Federal Supply Class:
5305
National Item Identification Number:
000220493
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:
| 220493 | 24617 | GENERAL MOTORS CORP | | MS35763-817 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| FASTENER LENGTH | 0.718 INCHES MINIMUM AND 0.782 INCHES MAXIMUM | | FEATURES PROVIDED | FINISHED HEAD | | HARDNESS RATING | 96.0 ROCKWELL B MINIMUM AND 104.0 ROCKWELL B MAXIMUM OVERALL | | HEAD HEIGHT | 0.188 INCHES MINIMUM AND 0.198 INCHES MAXIMUM | | HEAD STYLE | HEXAGON | | LOCKING FEATURE | DISTORTIONS BEARING SURFACE OF HEAD | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-634 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 1035 OVERALL | | MINIMUM YIELD STRENGTH | 85000 POUNDS PER SQUARE INCH | | MINIMUM TENSILE STRENGTH | 95000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | WIDTH BETWEEN FLATS | 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 1 CL 2 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 1 CL2 FED SPEC 2ND TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OR ZINC OVERALL | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.607 INCHES MINIMUM AND 0.718 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNC | | THREAD QUANTITY PER INCH | 18 |
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