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National Stock Number:
5306-00-208-9878
Federal Supply Class:
5306
National Item Identification Number:
002089878
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 MOD BY HEAD H | | FASTENER LENGTH | 6.000 INCHES NOMINAL | | FEATURES PROVIDED | FINISHED HEAD | | HARDNESS RATING | 100.0 ROCKWELL B NOMINAL OVERALL | | HEAD HEIGHT | 0.277 INCHES MINIMUM AND 0.317 INCHES MAXIMUM | | HEAD STYLE | HEXAGON | | MATERIAL | STEEL OVERALL | | MINIMUM TENSILE STRENGTH | 69000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.500 INCHES | | NONDEFINITIVE SPEC/STD DATA | 3 TYPE AND 2 GRADE | | WIDTH BETWEEN FLATS | 0.725 INCHES MINIMUM AND 0.750 INCHES MAXIMUM | | SURFACE TREATMENT | CADMIUM OR ZINC OVERALL | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 1.250 INCHES MINIMUM | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNF |
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