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National Stock Number:
5305-00-412-2015
Federal Supply Class:
5305
National Item Identification Number:
004122015
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:
| 92198A542 | 39428 | MCMASTER-CARR SUPPLY CO | | 9986530-4 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNC | | THREAD LENGTH | 0.938 INCHES MINIMUM | | FASTENER LENGTH | 0.969 INCHES MINIMUM AND | | 1.000 INCHES MAXIMUM | | MATERIAL | STEEL COMP 303 OR | | STEEL COMP 303SE OR | | STEEL COMP 302 OR | | STEEL COMP 304 OVERALL | | HEAD STYLE | HEXAGON | | THREAD DIRECTION | RIGHT-HAND | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 20 | | THREAD CLASS | 2A | | SURFACE TREATMENT | PASSIVATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | MINIMUM TENSILE STRENGTH | 90000 POUNDS PER SQUARE INCH | | HEAD HEIGHT | 0.150 INCHES MINIMUM AND | | 0.163 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.428 INCHES MINIMUM AND | | 0.437 INCHES MAXIMUM | | CRITICALITY CODE JUSTIFICATION | CQBC |
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