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National Stock Number:
5306-01-056-2941
Federal Supply Class:
5306
National Item Identification Number:
010562941
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:
| 7521294 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |
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Techincal Specification:
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.040 INCHES MINIMUM AND 1.060 INCHES MAXIMUM FIRST HOLE | | FASTENER LENGTH | 1.210 INCHES MINIMUM AND 1.230 INCHES MAXIMUM | | FEATURES PROVIDED | FINISHED HEAD | | GRIP LENGTH | 0.630 INCHES MINIMUM AND 0.690 INCHES MAXIMUM | | HEAD HEIGHT | 0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM | | HEAD STYLE | HEXAGON | | MATERIAL | STEEL OR STEEL COMP 304 OVERALL | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | SHANK UNTHREADED HOLE DIAMETER | 0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE | | WIDTH BETWEEN FLATS | 0.490 INCHES MINIMUM AND 0.502 INCHES MAXIMUM | | SURFACE TREATMENT | CADMIUM OR ZINC OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.520 INCHES MINIMUM AND 0.600 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 24 | | THREAD SERIES DESIGNATOR | UNF |
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