3a thread class right-hand 0.230" thread length hexagon head style 0.070" hole diameter 28 thread quantity per inch hole drilled on longitudinal axis of head, 0.188 in. dia, 0.185 in. deep, unthreaded portion externally relieved, 0.246 in. min, 0.249 in. max 1st dia from head, 0.220 in. min, 0.225 in. max 2nd dia from head, 1.000 in. lg from largest bearing surface of head to end of 1st dia, 2.200 in. lg from largest bearing surface of head to end of 2nd dia cadmium surface treated unf thread series
3a thread class right-hand 0.750" thread length headless (setscrew) head style 72 thread quantity per inch navy special project passivate surface treated unef thread series
3a thread class right-hand 0.218" thread length headless (setscrew) head style 48 thread quantity per inch navy special project cadmium surface treated unf thread series
2a thread class right-hand 1.500" thread length headless (setscrew) head style 10 thread quantity per inch hollow shank, 1/4 in. dia hole cadmium surface treated unc thread series
3a thread class right-hand 0.250" thread length headless (setscrew) head style 32 thread quantity per inch top surface of screw head to be marked with red ink M1LI16557, type 1 passivate surface treated unc thread series
3a thread class right-hand 0.500" thread length headless (setscrew) head style 20 thread quantity per inch cadmium or zinc surface treated unf thread series
3a thread class right-hand 0.250" thread length headless (setscrew) head style 32 thread quantity per inch passivate fastener surface treated unc thread series
