5306-01-280-6685, BOLT,MACHINE

National Stock Number:
5306-01-280-6685

Federal Supply Class:
5306

National Item Identification Number:
012806685

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:

FF-B-575	81348	FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC
MS35356-67	96906	MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M

Techincal Specification:

THREAD DIRECTION	RIGHT-HAND
FASTENER LENGTH	1.960 INCHES MINIMUM AND
	2.020 INCHES MAXIMUM
MATERIAL	STEEL OVERALL
THREAD LENGTH	1.000 INCHES MINIMUM
HEAD STYLE	SQUARE
THREAD SERIES DESIGNATOR	UNC
NOMINAL THREAD DIAMETER	0.375 INCHES
THREAD QUANTITY PER INCH	16
THREAD CLASS	2A
MATERIAL DOCUMENT AND CLASSIFICATION	SAE J429 GR 1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	PHOSPHATE ZINC OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	DOD-P-16232 TY Z CL2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING	70.0 ROCKWELL B MINIMUM AND
	100.0 ROCKWELL B MAXIMUM OVERALL
MINIMUM TENSILE STRENGTH	60000 POUNDS PER SQUARE INCH
HEAD HEIGHT	0.232 INCHES MINIMUM AND
	0.268 INCHES MAXIMUM
WIDTH BETWEEN FLATS	0.544 INCHES MINIMUM AND
	0.562 INCHES MAXIMUM
NONDEFINITIVE SPEC/STD DATA	1 TYPE
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE	81348
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	FF-B-575
MANUFACTURERS CODE	96906
DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	MS35356-67

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