5310-00-456-7837 WASHER,RECESSED Index 5310-00-456-7840 NUT STRIP

National Stock Number:
5306-00-456-7839

Federal Supply Class:
5306

National Item Identification Number:
004567839

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:
719066-173030HAMILTON SUNDSTRAND CORPORATION


Techincal Specification:
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER0.670 INCHES NOMINAL FIRST HOLE
FASTENER LENGTH0.835 INCHES MINIMUM AND 0.865 INCHES MAXIMUM
FEATURES PROVIDEDFINISHED HEAD
GRIP LENGTH0.415 INCHES MINIMUM AND 0.445 INCHES MAXIMUM
HARDNESS RATING24.0 ROCKWELL C MINIMUM OVERALL AND 37.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT0.123 INCHES MINIMUM AND 0.133 INCHES MAXIMUM
HEAD STYLEHEXAGON
NOMINAL THREAD DIAMETER0.250 INCHES
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALIRON ALLOY 660 OVERALL
SHANK UNTHREADED HOLE DIAMETER0.040 INCHES MINIMUM FIRST HOLE AND 0.048 INCHES MAXIMUM FIRST HOLE
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.390 INCHES MINIMUM AND 0.450 INCHES MAXIMUM
THREAD SERIES DESIGNATORUNF
THREAD QUANTITY PER INCH28
WIDTH BETWEEN FLATS0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM


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