5306-01-144-6264, BOLT,MACHINE

National Stock Number:
5306-01-144-6264

Federal Supply Class:
5306

National Item Identification Number:
011446264

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:

B1821BH025C150L	80204	AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED
MS90728-12L	96906	MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M

Techincal Specification:

FASTENER LENGTH	1.438 INCHES MINIMUM AND 1.438 INCHES MINIMUM AND 1.500 INCHES MAXIMUM1.500 INCHES MAXIMUM
FEATURES PROVIDED	FINISHED HEADFINISHED HEAD
HARDNESS RATING	33.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM FASTENER39.0 ROCKWELL C MAXIMUM FASTENER
HEAD HEIGHT	0.150 INCHES MINIMUM AND 0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM0.163 INCHES MAXIMUM
HEAD STYLE	HEXAGONHEXAGON
LOCKING FEATURE	PATCH OR PATCH OR STRIP THREADSSTRIP THREADS
MATERIAL DOCUMENT AND CLASSIFICATION	SAE J429,GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OR SAE J429,GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A354,GRADE BD ASSN STD SINGLE MATERIAL RESPONSE FASTENERASTM A354,GRADE BD ASSN STD SINGLE MATERIAL RESPONSE FASTENER
MATERIAL	PLASTIC POLYAMIDE NYLON LOCKING FEATURE
MATERIAL	STEEL FASTENER
MATERIAL	STEEL OVERALL
MINIMUM TENSILE STRENGTH	150000 POUNDS PER SQUARE INCH150000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.250 INCHES0.250 INCHES
SPECIAL FEATURES	LOCKING FEATURE IS PLASTIC POLYAMIDELOCKING FEATURE IS PLASTIC POLYAMIDE
WIDTH BETWEEN FLATS	0.428 INCHES MINIMUM AND 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM0.438 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	ASTM B633 TY 2 SC 3 ASSN STD SINGLE TREATMENT RESPONSE FASTENERASTM B633 TY 2 SC 3 ASSN STD SINGLE TREATMENT RESPONSE FASTENER
SURFACE TREATMENT	ZINC AND ZINC AND CHROMATE FASTENERCHROMATE FASTENER
THREAD CLASS	2A2A
THREAD DIRECTION	RIGHT-HANDRIGHT-HAND
THREAD LENGTH	0.938 INCHES MINIMUM0.938 INCHES MINIMUM
THREAD QUANTITY PER INCH	2020
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)UNIFIED NATIONAL COARSE (UNC)

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