5306-01-165-3257 BOLT,MACHINE Index 5305-01-165-3259 SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-01-165-3258

Federal Supply Class:
5306

National Item Identification Number:
011653258

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:
138147711862GENERAL MOTORS CORP CHEVROLET MOTOR DIV SPECIAL PRODUCTS DEPT
13814777X677GENERAL MOTORS LLC
138943311862GENERAL MOTORS CORP CHEVROLET MOTOR DIV SPECIAL PRODUCTS DEPT
13894337X677GENERAL MOTORS LLC
398943311862GENERAL MOTORS CORP CHEVROLET MOTOR DIV SPECIAL PRODUCTS DEPT


Techincal Specification:
EXTENDED WASHER DIAMETER0.680 INCHES MINIMUM AND 0.685 INCHES MAXIMUM
EXTENDED WASHER THICKNESS0.035 INCHES MINIMUM
FASTENER LENGTH0.500 INCHES NOMINAL
FEATURES PROVIDEDFINISHED HEAD
HARDNESS RATING42.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT0.208 INCHES MINIMUM
HEAD STYLEHEXAGON EXTENDED WASHER
MATERIAL DOCUMENT AND CLASSIFICATIONSAE 1541 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
NOMINAL THREAD DIAMETER0.312 INCHES
SPECIAL FEATURESFURNISHED WITH CUT AWAY ON THD END 0.156 IN. MIN AND 0.172 IN. MAX DIA
WIDTH BETWEEN FLATS0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONGM 4435-M CODE A FSCM 11862 MFR REF SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPHOSPHATE OVERALL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.420 INCHES NOMINAL
THREAD QUANTITY PER INCH18
THREAD SERIES DESIGNATORUNRC


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