5306-00-849-8391, BOLT,MACHINE

National Stock Number:
5306-00-849-8391

Federal Supply Class:
5306

National Item Identification Number:
008498391

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:

532181

77445

RTX CORPORATION

Techincal Specification:

DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	1.860 INCHES MINIMUM AND 1.870 INCHES MAXIMUM FIRST HOLE
FASTENER LENGTH	1.965 INCHES MINIMUM AND 1.985 INCHES MAXIMUM
FEATURES PROVIDED	FINISHED HEAD
GRIP LENGTH	1.494 INCHES MINIMUM AND 1.554 INCHES MAXIMUM
HARDNESS RATING	26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM
HEAD STYLE	HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 8740 OVERALL
NOMINAL THREAD DIAMETER	0.250 INCHES
SHANK UNTHREADED HOLE DIAMETER	0.065 INCHES MINIMUM AND 0.072 INCHES MAXIMUM FIRST HOLE
WIDTH BETWEEN FLATS	0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM
SURFACE FINISH	125.0 MICROINCHES TOP OF HEAD
SURFACE FINISH	63.0 MICROINCHES BEARING SURFACE OF HEAD
SURFACE FINISH	63.0 MICROINCHES GRIP
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.360 INCHES MINIMUM AND 0.400 INCHES MAXIMUM
THREAD QUANTITY PER INCH	28
THREAD SERIES DESIGNATOR	UNJF

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