3a thread class right-hand 0.691" thread length hexagon extended washer head style 18 thread quantity per inch cadmium or chromium surface treated unf thread series
1a thread class right-hand 0.420" thread length flat chamfer head style 28 thread quantity per inch hex socket 0.170 in. deep in thd end nickel surface treated unf thread series
3a thread class right-hand 0.250" thread length hexagon head style 0.062" hole diameter 20 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.563" thread length hexagon head style 24 thread quantity per inch navy special project passivate surface treated unf thread series
2a thread class right-hand 0.554" thread length hexagon head style 28 thread quantity per inch undercut between shoulderand threads 0.035 to 0.070 in wide cadmium surface treated unf thread series
3a thread class right-hand 0.438" thread length hexagon head style 7/16-20 thread quantity per inch navy special project cadmium surface treated unf thread series
3a thread class 0.748" thread length flat chamfer head style hex socket style of internal drive 0.156 in. min to 0.158 in. max w. across flats, located in thd end nickel surface treated
2a thread class right-hand 0.688" thread length hexagon head style 0.062" hole diameter 20 thread quantity per inch one keyway 1 in. lg by 0.140 to 0.145 in. w by 0.100 in. deep in bottom of shoulder w/0.031 in. by 45 degree chamfer zinc surface treated unf thread series
3a thread class right-hand 0.511" thread length round w/wrench flats head style 18 thread quantity per inch navy special project cadmium surface treated unjf thread series
3a thread class right-hand 1.493" thread length hexagon extended washer head style 24 thread quantity per inch cadmium surface treated unf thread series
