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National Stock Number:
5305-00-057-1126
Federal Supply Class:
5305
National Item Identification Number:
000571126
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:
| 571126 | 21450 | ARMY WEAPONS COMMAND ATTN AMSWE-REE-S | | FFS85TYPE2STYLE10P | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNF | | THREAD LENGTH | 1.000 INCHES MAXIMUM | | FASTENER LENGTH | 1.000 INCHES NOMINAL | | MATERIAL | STEEL OVERALL | | HEAD STYLE | HEXAGON | | THREAD DIRECTION | RIGHT-HAND | | NOMINAL THREAD DIAMETER | 0.438 INCHES | | THREAD QUANTITY PER INCH | 20 | | THREAD CLASS | 2A | | MATERIAL DOCUMENT AND CLASSIFICATION | SAE,GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | PHOSPHATE OVERALL | | HEAD HEIGHT | 0.281 INCHES NOMINAL | | WIDTH BETWEEN FLATS | 0.625 INCHES NOMINAL | | HOLE TYPE | DRILLED | | HOLE QUANTITY | 1 | | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 0.844 INCHES NOMINAL FIRST HOLE | | SHANK UNTHREADED HOLE DIAMETER | 0.107 INCHES NOMINAL FIRST HOLE | | DEPARTURE FROM CITED DOCUMENT | AS MODIFIED BY DRILLED FOR COTTER PIN | | NONDEFINITIVE SPEC/STD DATA | II TYPE AND | | 10P STYLE | | SPEC/STD CONTROLLING DATA | | | MANUFACTURERS CODE | 81348 | | NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | FFS85TYPE2STYLE10P |
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