5306-01-206-5451, BOLT,MACHINE

National Stock Number:
5306-01-206-5451

Federal Supply Class:
5306

National Item Identification Number:
012065451

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:

B1821BH031C225L	80204	AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED
MS90728-41L	96906	MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M

Techincal Specification:

FASTENER LENGTH	2.156 INCHES MINIMUM AND 2.250 INCHES MAXIMUM
FEATURES PROVIDED	FINISHED HEAD
HARDNESS RATING	33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM FASTENER
HEAD HEIGHT	0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM
HEAD STYLE	HEXAGON
LOCKING FEATURE	PATCH OR STRIP THREADS
MATERIAL DOCUMENT AND CLASSIFICATION	SAE J429,GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A354,GRADE BD ASSN STD SINGLE MATERIAL RESPONSE FASTENER
MATERIAL	PLASTIC POLYAMIDE LOCKING FEATURE
MATERIAL	STEEL FASTENER
MATERIAL	STEEL OVERALL
MINIMUM TENSILE STRENGTH	150000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.312 INCHES
WIDTH BETWEEN FLATS	0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	ASTM B633 TY 2 SC 3 ASSN STD SINGLE TREATMENT RESPONSE FASTENER
SURFACE TREATMENT	ZINC AND CHROMATE FASTENER
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.874 INCHES MINIMUM AND 1.061 INCHES MAXIMUM
THREAD QUANTITY PER INCH	18
THREAD SERIES DESIGNATOR	UNC

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