5306-01-426-7542, BOLT,MACHINE

National Stock Number:
5306-01-426-7542

Federal Supply Class:
5306

National Item Identification Number:
014267542

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:

MS35764-1412

96906

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

Techincal Specification:

FASTENER LENGTH	2.440 INCHES MINIMUM AND 2.500 INCHES MAXIMUM
FEATURES PROVIDED	FINISHED HEAD
HARDNESS RATING	32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.312 INCHES MINIMUM AND 0.327 INCHES MAXIMUM
HEAD STYLE	DISTORTED HEAD
LOCKING FEATURE	DISTORTIONS HEAD
MATERIAL DOCUMENT AND CLASSIFICATION	J429 GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL OVERALL
MINIMUM YIELD STRENGTH	120000 POUNDS PER SQUARE INCH
MINIMUM TENSILE STRENGTH	150000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.500 INCHES
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-P-16232 TY Z CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	PHOSPHATE OVERALL
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	1.250 INCHES NOMINAL
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH	13
WIDTH BETWEEN FLATS	0.798 INCHES MINIMUM AND 0.812 INCHES MAXIMUM

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