5975-00-780-1572 MOUNTING BASE,ELECTRICAL EQUIPM Index 6110-00-780-1591 PANEL,PROTECTION,ELECTRICAL SYST

National Stock Number:
5306-00-780-1577

Federal Supply Class:
5306

National Item Identification Number:
007801577

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:
44218306725SPS TECHNOLOGIES, LLC
44218356878SPS TECHNOLOGIES, LLC
44218377445RTX CORPORATION
44218392215HOWMET GLOBAL FASTENING SYSTEMS INC


Techincal Specification:
FASTENER LENGTH1.870 INCHES MINIMUM AND 1.890 INCHES MAXIMUM
FEATURES PROVIDEDFINISHED HEAD
GRIP LENGTH1.440 INCHES MINIMUM AND 1.500 INCHES MAXIMUM
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT0.320 INCHES MINIMUM AND 0.340 INCHES MAXIMUM
HEAD STYLEDOUBLE HEXAGON W/HOLE
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 8740 OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES
SHANK UNTHREADED HOLE DIAMETER0.065 INCHES MINIMUM AND 0.072 INCHES MAXIMUM FIRST HOLE
WIDTH BETWEEN FLATS0.304 INCHES MINIMUM AND 0.313 INCHES MAXIMUM
SURFACE FINISH32.0 MICROINCHES THREADS
SURFACE FINISH63.0 MICROINCHES BEARING SURFACE OF HEAD
SURFACE FINISH63.0 MICROINCHES GRIP
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.370 INCHES MINIMUM AND 0.450 INCHES MAXIMUM
THREAD SERIES DESIGNATORUNF
THREAD QUANTITY PER INCH28
EXTENDED WASHER THICKNESS0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM
EXTENDED WASHER DIAMETER0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER1.770 INCHES MINIMUM AND 1.790 INCHES MAXIMUM FIRST HOLE


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