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National Stock Number:
5306-01-174-6520
Federal Supply Class:
5306
National Item Identification Number:
011746520
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:
| AS43312 | K7766 | BRITISH STANDARDS INSTITUTION | | AS43312 | U1653 | SOCIETY OF BRITISH AEROSPACE COMPANI LTD SBAC |
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Techincal Specification:
| THREAD DIRECTION | RIGHT-HAND | | FASTENER LENGTH | 0.750 INCHES NOMINAL | | MATERIAL | STEEL OVERALL | | THREAD LENGTH | 0.651 INCHES MINIMUM AND | | 0.671 INCHES MAXIMUM | | HEAD STYLE | DOUBLE HEXAGON W/HOLE | | THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 28 | | THREAD CLASS | 3A | | MATERIAL DOCUMENT AND CLASSIFICATION | DTD5066,FSCM K7766 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | SILVER THREADS | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | DTD939,FSCM K7766 MFR REF SINGLE TREATMENT RESPONSE THREADS | | HEAD HEIGHT | 0.303 INCHES NOMINAL | | WIDTH BETWEEN FLATS | 0.312 INCHES NOMINAL | | EXTENDED WASHER DIAMETER | 0.438 INCHES NOMINAL | | EXTENDED WASHER THICKNESS | 0.060 INCHES NOMINAL | | HOLE CONFIGURATION STYLE | DOUBLE HEXAGON LONGITUDINAL HOLE | | HOLE TYPE | DRILLED | | HOLE QUANTITY | 4 | | HOLE DIAMETER | 0.079 INCHES MINIMUM AND | | 0.087 INCHES MAXIMUM | | SURFACE FINISH | 32.0 MICROINCHES THREADS | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | K7766 | | DESIGN CONTROL REFERENCE | AS43312 |
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