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National Stock Number:
5305-00-169-0826
Federal Supply Class:
5305
National Item Identification Number:
001690826
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:
| 7R7 | K3743 | BAE SYSTEMS GLOBAL COMBAT SYSTEMS LIMITED | | 7R9641294 | K3743 | BAE SYSTEMS GLOBAL COMBAT SYSTEMS LIMITED | | D5E9306-161 | K3743 | BAE SYSTEMS GLOBAL COMBAT SYSTEMS LIMITED |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNC | | THREAD LENGTH | 0.500 INCHES MINIMUM AND | | 0.530 INCHES MAXIMUM | | FASTENER LENGTH | 1.000 INCHES MINIMUM AND | | 1.060 INCHES MAXIMUM | | MATERIAL | STEEL OVERALL | | HEAD STYLE | HEXAGON | | THREAD DIRECTION | RIGHT-HAND | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 20 | | THREAD CLASS | 2A | | MATERIAL DOCUMENT AND CLASSIFICATION | BS 970,EN 3B MFR REF SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | PHOSPHATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | DEF 29,CLASS 1 MFR REF SINGLE TREATMENT RESPONSE OVERALL | | HEAD HEIGHT | 0.160 INCHES MINIMUM AND | | 0.170 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.4305 INCHES MINIMUM AND | | 0.4375 INCHES MAXIMUM | | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 0.860 INCHES MINIMUM AND | | 0.870 INCHES MAXIMUM FIRST HOLE | | SHANK UNTHREADED HOLE DIAMETER | 0.070 INCHES MINIMUM AND | | 0.075 INCHES MAXIMUM FIRST HOLE | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | K3743 | | DESIGN CONTROL REFERENCE | D5E9306-161 |
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