5306-00-208-3988 BOLT,MACHINE Index 5310-00-208-4000 NUT,SELF-LOCKING,HEXAGON

National Stock Number:
5306-00-208-3990

Federal Supply Class:
5306

National Item Identification Number:
002083990

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:
FFB571AMEND181348FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC


Techincal Specification:
THREAD DIRECTIONRIGHT-HAND
FASTENER LENGTH14.500 INCHES NOMINAL
MATERIALSTEEL OVERALL
THREAD LENGTH1.500 INCHES MINIMUM
HEAD STYLEHEXAGON
THREAD SERIES DESIGNATORUNC
NOMINAL THREAD DIAMETER0.875 INCHES
THREAD QUANTITY PER INCH9
THREAD CLASS2A
MINIMUM YIELD STRENGTH40000 POUNDS PER SQUARE INCH
HEAD HEIGHT0.594 INCHES NOMINAL
WIDTH BETWEEN FLATS1.269 INCHES MINIMUM AND
1.312 INCHES MAXIMUM
FEATURES PROVIDEDFINISHED HEAD
DEPARTURE FROM CITED DOCUMENTAS MODIFIED BY THD LG
SPECIAL FEATURESSUPPLIED W/HEX NUT HAVING SELF-LOCKING THD
NONDEFINITIVE SPEC/STD DATAB-2 TYPE AND
A CLASS
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE81348
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCEFFB571AMEND1


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