5998-01-278-1955 PRINTED WIRING BOARD Index 5306-01-278-1957 BOLT,MACHINE

National Stock Number:
5306-01-278-1956

Federal Supply Class:
5306

National Item Identification Number:
012781956

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:
MS9502-2696906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
FASTENER LENGTH1.990 INCHES MINIMUM AND 2.010 INCHES MAXIMUM
FEATURES PROVIDEDFINISHED HEAD
GRIP LENGTH1.065 INCHES MINIMUM AND 1.125 INCHES MAXIMUM
HEAD HEIGHT0.182 INCHES MINIMUM AND 0.198 INCHES MAXIMUM
HEAD STYLEHEXAGON
HOLE CONFIGURATION STYLEHEXAGON FLATS
HOLE DIAMETER0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM
HOLE QUANTITY1
HOLE TYPEDRILLED
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5731 UNS S66286 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALIRON ALLOY 660 OVERALL
NOMINAL THREAD DIAMETER0.312 INCHES
SPECIFICATION/STANDARD DATA96906-MS9502 GOVERNMENT STANDARD
WIDTH BETWEEN FLATS0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM
SURFACE FINISH125.0 MICROINCHES GRIP
SURFACE FINISH125.0 MICROINCHES SIDES OF HEAD
SURFACE FINISH125.0 MICROINCHES TOP OF HEAD
SURFACE FINISH32.0 MICROINCHES BEARING SURFACE OF HEAD
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS3A
THREAD LENGTH0.875 INCHES MINIMUM AND 0.935 INCHES MAXIMUM
THREAD SERIES DESIGNATORUNJF
THREAD QUANTITY PER INCH24


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