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National Stock Number:
5306-00-021-3735
Federal Supply Class:
5306
National Item Identification Number:
000213735
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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Techincal Specification:
| DEPARTURE FROM CITED DESIGNATOR | AS MODIFIED BY H OF HEAD | | FASTENER LENGTH | 1.250 INCHES NOMINAL | | FEATURES PROVIDED | FINISHED HEAD | | HARDNESS RATING | 95.5 ROCKWELL B MAXIMUM OVERALL | | HEAD HEIGHT | 0.281 INCHES NOMINAL | | HEAD STYLE | HEXAGON | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | MINIMUM TENSILE STRENGTH | 55000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.375 INCHES | | NONDEFINITIVE SPEC/STD DATA | 3 TYPE AND 1 GRADE | | WIDTH BETWEEN FLATS | 0.562 INCHES NOMINAL | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 1.000 INCHES MINIMUM | | THREAD SERIES DESIGNATOR | UNC | | THREAD QUANTITY PER INCH | 16 |
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