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National Stock Number:
5305-01-044-2239
Federal Supply Class:
5305
National Item Identification Number:
010442239
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:
| 903072-12 | 90536 | LOCKHEED MARTIN CORP |
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Techincal Specification:
| FASTENER LENGTH | 0.969 INCHES MINIMUM AND 1.000 INCHES MAXIMUM | | HEAD HEIGHT | 0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM | | HEAD STYLE | HEXAGON | | MATERIAL | COPPER ALLOY 462 OR COPPER ALLOY 464 OR COPPER ALLOY 482 OR COPPER ALLOY 485 OR COPPER ALLOY 230 OR COPPER ALLOY 240 OR COPPER ALLOY 260 OR COPPER ALLOY 268 OR COPPER ALLOY 342 OR COPPER ALLOY 353 OR COPPER ALLOY 360 OR COPPER ALLOY 377 OR COPPER ALLOY 764 OR COPPER ALLOY 270 OR COPPER ALLOY 510 OR COPPER ALLOY 745 OR COPPER ALLOY 752 OR COPPER ALLOY 770 OVERALL | | MINIMUM TENSILE STRENGTH | 52000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | WIDTH BETWEEN FLATS | 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 2A | | THREAD LENGTH | 0.750 INCHES MINIMUM AND 1.000 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNC | | THREAD QUANTITY PER INCH | 20 |
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