5306-01-214-5950, BOLT,MACHINE

National Stock Number:
5306-01-214-5950

Federal Supply Class:
5306

National Item Identification Number:
012145950

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:

5306PL1274297	9009H	INSPEKTORAT WSPARCIA SIL ZBROJNYCH
MS9493-27	96906	MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M

Techincal Specification:

FASTENER LENGTH	2.490 INCHES MINIMUM AND 2.510 INCHES MAXIMUM
GRIP LENGTH	1.315 INCHES MINIMUM AND 1.375 INCHES MAXIMUM
HARDNESS RATING	24.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM
HEAD STYLE	HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	IRON ALLOY 660 OVERALL
MINIMUM TENSILE STRENGTH	130000 POUNDS PER SQUARE INCH
MINIMUM YIELD STRENGTH	85000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.437 INCHES
WIDTH BETWEEN FLATS	0.679 INCHES MINIMUM AND 0.690 INCHES MAXIMUM
SURFACE FINISH	32.0 MICROINCHES BEARING SURFACE OF HEAD
SURFACE FINISH	32.0 MICROINCHES GRIP
SURFACE FINISH	32.0 MICROINCHES THREADS
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	1.115 INCHES MINIMUM AND 1.195 INCHES MAXIMUM
THREAD QUANTITY PER INCH	20
THREAD SERIES DESIGNATOR	UNJF

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