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National Stock Number:
5306-00-297-8724
Federal Supply Class:
5306
National Item Identification Number:
002978724
Description:
BOLT,MACHINE
Detail:
An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. The threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. For items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, BOLT, SHEAR. See also SCREW, CAP, HEXAGON HEAD and SCREW, MACHINE.
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Manufacturer Information:
| FFB571TYPEB2 | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC |
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Techincal Specification:
| FASTENER LENGTH | 0.875 INCHES NOMINAL | | FEATURES PROVIDED | FINISHED HEAD | | GRIP LENGTH | 0.500 INCHES NOMINAL | | HEAD HEIGHT | 0.156 INCHES NOMINAL | | HEAD STYLE | HEXAGON | | MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD 1ST MATERIAL RESPONSE OR AISI/SAE ASSN STD 2ND MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 1213 OVERALL | | MINIMUM TENSILE STRENGTH | 100000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | NONDEFINITIVE SPEC/STD DATA | B-2 TYPE | | SURFACE TREATMENT | DICHROMATE ZINC OVERALL | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.375 INCHES MINIMUM | | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) | | THREAD QUANTITY PER INCH | 20 | | WIDTH BETWEEN FLATS | 0.363 INCHES MINIMUM AND 0.375 INCHES MAXIMUM |
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