5306-01-281-7154, BOLT,MACHINE

National Stock Number:
5306-01-281-7154

Federal Supply Class:
5306

National Item Identification Number:
012817154

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:

B1821BH050F175L	80204	AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED
FF-S-85	81348	FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC
MS90727-114L	96906	MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M

Techincal Specification:

THREAD DIRECTION	RIGHT-HAND
FASTENER LENGTH	1.688 INCHES MINIMUM AND
	1.750 INCHES MAXIMUM
MATERIAL	STEEL OVERALL
	PLASTIC POLYAMIDE LOCKING FEATURE
	STEEL FASTENER
THREAD LENGTH	1.250 INCHES MINIMUM
HEAD STYLE	HEXAGON
THREAD SERIES DESIGNATOR	UNF
NOMINAL THREAD DIAMETER	0.500 INCHES
THREAD QUANTITY PER INCH	20
THREAD CLASS	2A
MATERIAL DOCUMENT AND CLASSIFICATION	66 GRADE 8 FED STD SINGLE MATERIAL RESPONSE FASTENER
SURFACE TREATMENT	ZINC AND
	CHROMATE FASTENER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	ASTM B633 TY 2 SC 3 ASSN STD SINGLE TREATMENT RESPONSE FASTENER
HARDNESS RATING	32.0 ROCKWELL C MINIMUM AND
	38.0 ROCKWELL C MAXIMUM FASTENER
MINIMUM TENSILE STRENGTH	150000 POUNDS PER SQUARE INCH
HEAD HEIGHT	0.302 INCHES MINIMUM AND
	0.323 INCHES MAXIMUM
WIDTH BETWEEN FLATS	0.736 INCHES MINIMUM AND
	0.750 INCHES MAXIMUM
LOCKING FEATURE	PATCH OR
	STRIP THREADS
FEATURES PROVIDED	FINISHED HEAD
SPECIAL FEATURES	LOCKING FEATURE MATERIAL PLASTIC EPOXY, WEAPONS SYSTEM ESSENTIAL
NONDEFINITIVE SPEC/STD DATA	2 TYPE AND
	10P STYLE
CRITICALITY CODE JUSTIFICATION	FEAT

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