5306-00-474-3495, BOLT,MACHINE

National Stock Number:
5306-00-474-3495

Federal Supply Class:
5306

National Item Identification Number:
004743495

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.

Manufacturer Information:

5372	14451	SOON AIR CO
5372	55948	BOTOMAN MFG CO INC

Techincal Specification:

DISTANCE FROM CENTERLINE TO FLAT	0.139 INCHES MINIMUM AND 0.145 INCHES MAXIMUM
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	0.615 INCHES MINIMUM AND 0.625 INCHES MAXIMUM FIRST HOLE
FASTENER LENGTH	0.690 INCHES MINIMUM AND 0.710 INCHES MAXIMUM
FEATURES PROVIDED	UNFINISHED HEAD
GRIP LENGTH	0.315 INCHES MINIMUM AND 0.335 INCHES MAXIMUM
HARDNESS RATING	29.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.080 INCHES MINIMUM AND 0.100 INCHES MAXIMUM
HEAD DIAMETER	0.390 INCHES MINIMUM AND 0.420 INCHES MAXIMUM
HEAD STYLE	DEE CHAMFER
MATERIAL	STEEL OVERALL
NOMINAL THREAD DIAMETER	0.250 INCHES
SHANK UNTHREADED HOLE DIAMETER	0.084 INCHES MINIMUM AND 0.089 INCHES MAXIMUM FIRST HOLE
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.375 INCHES NOMINAL
THREAD QUANTITY PER INCH	28
THREAD SERIES DESIGNATOR	UNF

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