Serrated flange head
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 6240-01-389-8584
NSN 6150-01-307-5173
NSN 6685-00-308-4204
NSN 5915-00-332-0362
NSN 5985-01-304-7165
NSN 6320-01-539-1997
NSN 2925-01-463-8856
NSN 5935-01-224-7503
NSN 2925-00-504-2363
NSN 5855-01-085-5354
NSN 6645-00-991-8704
NSN 6320-01-201-2776