5305-00-639-3246 SETSCREW Index 5305-00-639-3257 SETSCREW

National Stock Number:
5306-00-639-3248

Federal Supply Class:
5306

National Item Identification Number:
006393248

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:
318155280064NAVAL SHIP SYSTEMS COMMAND


Techincal Specification:
FASTENER LENGTH7.625 INCHES NOMINAL
FEATURES PROVIDEDFINISHED HEAD
HARDNESS RATING23.0 ROCKWELL C NOMINAL OVERALL
HEAD HEIGHT0.250 INCHES NOMINAL
HEAD STYLEHEXAGON
MATERIAL DOCUMENT AND CLASSIFICATIONFED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 1117 OVERALL
MINIMUM TENSILE STRENGTH69000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER0.312 INCHES
WIDTH BETWEEN FLATS0.563 INCHES NOMINAL
SURFACE TREATMENTCADMIUM OVERALL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH1.875 INCHES MINIMUM
THREAD QUANTITY PER INCH24
THREAD SERIES DESIGNATORUNF


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