5306-01-291-5676, BOLT,MACHINE

National Stock Number:
5306-01-291-5676

Federal Supply Class:
5306

National Item Identification Number:
012915676

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:

MS9208-19

96906

MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M

Techincal Specification:

THREAD DIRECTION	RIGHT-HAND
FASTENER LENGTH	1.302 INCHES MINIMUM AND
	1.322 INCHES MAXIMUM
MATERIAL	STEEL COMP 601 OVERALL
THREAD LENGTH	0.620 INCHES MINIMUM AND
	0.700 INCHES MAXIMUM
HEAD STYLE	DOUBLE HEXAGON EXTENDED WASHER
THREAD SERIES DESIGNATOR	UNJF
NOMINAL THREAD DIAMETER	0.190 INCHES
THREAD QUANTITY PER INCH	32
THREAD CLASS	3A
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 6304 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM AND
	CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	AMS 2416 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING	42.0 ROCKWELL C MINIMUM AND
	46.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.250 INCHES MINIMUM AND
	0.270 INCHES MAXIMUM
WIDTH BETWEEN FLATS	0.243 INCHES MINIMUM AND
	0.251 INCHES MAXIMUM
EXTENDED WASHER DIAMETER	0.365 INCHES MINIMUM AND
	0.385 INCHES MAXIMUM
EXTENDED WASHER THICKNESS	0.040 INCHES MINIMUM AND
	0.050 INCHES MAXIMUM
GRIP LENGTH	0.622 INCHES MINIMUM AND
	0.682 INCHES MAXIMUM
SURFACE FINISH	32.0 MICROINCHES BEARING SURFACE OF HEAD
	32.0 MICROINCHES GRIP
	32.0 MICROINCHES THREADS
FEATURES PROVIDED	FINISHED HEAD
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE	96906
DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	MS9208-19

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