2a thread class right-hand 1.000" thread length 8 thread quantity per inch two drilled holes in the head 90 degrees apart 0.140 in dia unc thread series
3a thread class right-hand 0.505" thread length hexagon head style 20 thread quantity per inch center shoulder eccentric to shank center by 0.010 in. min, 0.015 in. max cadmium surface treated unf thread series
2a thread class right-hand 1.188" thread length hexagon head style 20 thread quantity per inch furnished w/unthrd portion below 3rd shoulder has 9/64 in. lg tapered from 1/2 in. dia to 7/16 in. dia; 3rd shoulder dia 0.500 in. nom; 3rd shoulder lg 0.031 in. nom cadmium or zinc surface treated unf thread series
3a thread class right-hand 1.130" thread length double hexagon w/hole head style 0.070" hole diameter 28 thread quantity per inch navy special project cadmium surface treated unf thread series
3a thread class right-hand 0.594" thread length round w/wrench flats head style 20 thread quantity per inch cadmium threads surface treated unf thread series
2a thread class right-hand 0.735" thread length flat chamfer head style 0.070" hole diameter 18 thread quantity per inch head is eccentric with groove cadmium surface treated unf thread series
3a thread class right-hand 0.312" thread length hexagon head style 0.031" hole diameter 28 thread quantity per inch navy special project phosphate manganese surface treated unf thread series
3a thread class right-hand 0.275" thread length hexagon head style 20 thread quantity per inch design analysis; nuclear hardness critical unf thread series
