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National Stock Number:
5306-01-040-1077
Federal Supply Class:
5306
National Item Identification Number:
010401077
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:
| 9414204 | 24617 | GENERAL MOTORS CORP |
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Techincal Specification:
| THREAD DIRECTION | RIGHT-HAND | | FASTENER LENGTH | 0.345 INCHES MINIMUM AND | | 0.375 INCHES MAXIMUM | | MATERIAL | STEEL COMP 1018 OR | | STEEL COMP 1021 OR | | STEEL COMP 1022 OVERALL | | THREAD LENGTH | 0.245 INCHES MINIMUM AND | | 0.375 INCHES MAXIMUM | | HEAD STYLE | HEXAGON EXTENDED WASHER | | THREAD SERIES DESIGNATOR | UNRC | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 20 | | THREAD CLASS | 2A | | MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD ALL MATERIAL RESPONSES OVERALL | | SURFACE TREATMENT | ZINC OVERALL | | HARDNESS RATING | 22.0 ROCKWELL C MINIMUM AND | | 35.0 ROCKWELL C MAXIMUM OVERALL | | MINIMUM TENSILE STRENGTH | 115000 POUNDS PER SQUARE INCH | | HEAD HEIGHT | 0.178 INCHES MINIMUM AND | | 0.191 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.367 INCHES MINIMUM AND | | 0.375 INCHES MAXIMUM | | EXTENDED WASHER DIAMETER | 0.513 INCHES MINIMUM AND | | 0.531 INCHES MAXIMUM | | EXTENDED WASHER THICKNESS | 0.019 INCHES MINIMUM AND | | 0.028 INCHES MAXIMUM | | LOCKING FEATURE | LOCKING TEETH BEARING SURFACE OF HEAD | | FEATURES PROVIDED | UNFINISHED HEAD |
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