5306-00-685-1678 BOLT,EXTERNALLY RELIEVED BODY Index 5310-00-685-1684 NUT,PLAIN,HEXAGON

National Stock Number:
5306-00-685-1679

Federal Supply Class:
5306

National Item Identification Number:
006851679

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:
23-3428-50181205THE BOEING COMPANY
23-3428-50182918THE BOEING COMPANY


Techincal Specification:
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER0.698 INCHES MINIMUM AND 0.730 INCHES MAXIMUM FIRST HOLE
FASTENER LENGTH0.840 INCHES MINIMUM AND 0.860 INCHES MAXIMUM
FEATURES PROVIDEDFINISHED HEAD
GRIP LENGTH0.500 INCHES NOMINAL
HEAD HEIGHT0.190 INCHES NOMINAL
HEAD STYLEHEXAGON
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
MINIMUM TENSILE STRENGTH160000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER0.375 INCHES
SHANK UNTHREADED HOLE DIAMETER0.106 INCHES NOMINAL FIRST HOLE
WIDTH BETWEEN FLATS0.552 INCHES MINIMUM AND 0.564 INCHES MAXIMUM
SURFACE FINISH250.0 MICROINCHES HEAD
SURFACE FINISH250.0 MICROINCHES THREADS
SURFACE FINISH32.0 MICROINCHES GRIP
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-C-320,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCHROMIUM OVERALL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.340 INCHES MINIMUM AND 0.360 INCHES MAXIMUM
THREAD SERIES DESIGNATORUNF
THREAD QUANTITY PER INCH24


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