0.625 in. Width between flats
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.
NSN 7035-01-121-5905
NSN 5905-00-189-9138
NSN 4140-00-481-0810
NSN 6150-01-418-4196
NSN 5855-01-385-4234
NSN 5935-00-280-3116
NSN 5905-01-567-5947
NSN 5935-01-107-7909
NSN 6150-01-509-3452
NSN 5990-01-009-3634
NSN 5895-01-271-5335
NSN 5935-01-353-7470