5306-01-285-2743, BOLT,MACHINE

National Stock Number:
5306-01-285-2743

Federal Supply Class:
5306

National Item Identification Number:
012852743

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:

MS20074-12-53

96906

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

Techincal Specification:

FASTENER LENGTH	5.422 INCHES MINIMUM AND 5.469 INCHES MAXIMUM
FEATURES PROVIDED	FINISHED HEAD
GRIP LENGTH	4.359 INCHES MINIMUM AND 4.391 INCHES MAXIMUM
HARDNESS RATING	26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.547 INCHES MINIMUM AND 0.578 INCHES MAXIMUM
HEAD STYLE	HEXAGON
HOLE CONFIGURATION STYLE	HEXAGON LONGITUDINAL HOLE
HOLE DIAMETER	0.065 INCHES MINIMUM AND 0.075 INCHES MAXIMUM
HOLE QUANTITY	6
HOLE TYPE	DRILLED
MATERIAL	STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8735 OR STEEL COMP 4130 OVERALL
MINIMUM TENSILE STRENGTH	125000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.750 INCHES
SPECIAL FEATURES	DRILL 0.188 IN. HOLE IN CENTER OF HEAD
WIDTH BETWEEN FLATS	1.053 INCHES MINIMUM AND 1.064 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416,TYPE 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM AND CHROMATE OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	1.031 INCHES MINIMUM AND 1.110 INCHES MAXIMUM
THREAD QUANTITY PER INCH	10
THREAD SERIES DESIGNATOR	UNC

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