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National Stock Number:
5306-01-190-1714
Federal Supply Class:
5306
National Item Identification Number:
011901714
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:
| J644P10B | 58828 | CFM INTERNATIONAL INC |
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Techincal Specification:
| THREAD DIRECTION | RIGHT-HAND | | FASTENER LENGTH | 0.802 INCHES MINIMUM AND | | 0.822 INCHES MAXIMUM | | MATERIAL | NICKEL ALLOY 718 OVERALL | | THREAD LENGTH | 0.731 INCHES MINIMUM AND | | 0.802 INCHES MAXIMUM | | HEAD STYLE | DOUBLE HEXAGON EXTENDED WASHER | | THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 28 | | THREAD CLASS | 3A | | HEAD HEIGHT | 0.293 INCHES MINIMUM AND | | 0.303 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.3125 INCHES NOMINAL | | EXTENDED WASHER DIAMETER | 0.428 INCHES MINIMUM AND | | 0.448 INCHES MAXIMUM | | EXTENDED WASHER THICKNESS | 0.060 INCHES MINIMUM AND | | 0.070 INCHES MAXIMUM | | HOLE CONFIGURATION STYLE | DOUBLE HEXAGON FLATS | | HOLE TYPE | DRILLED | | HOLE QUANTITY | 2 | | HOLE DIAMETER | 0.075 INCHES MINIMUM AND | | 0.095 INCHES MAXIMUM | | SURFACE FINISH | 32.0 MICROINCHES GRIP | | 32.0 MICROINCHES THREADS | | FEATURES PROVIDED | FINISHED HEAD |
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