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 6620-01-222-0143
NSN 2925-01-258-8141
NSN 6130-01-259-4661
NSN 5920-01-032-4756
NSN 2925-01-208-3639
NSN 6620-01-010-0518
NSN 6110-00-669-6726
NSN 5990-00-350-2352
NSN 5999-00-224-5945
NSN 5950-01-243-9152
NSN 6220-01-263-7281
NSN 6610-00-116-5725