3a thread class right-hand 0.640" thread length hexagon head style 0.062" hole diameter 20 thread quantity per inch cadmium surface treated unc thread series
3a thread class right-hand 0.600" thread length hexagon head style 24 thread quantity per inch hole with 0.081 in. diameter through, 1.490 in. from head of bolt cadmium or zinc surface treated unf thread series
3a thread class right-hand 0.703" thread length hexagon head style 2.500" grip length 24 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.688" thread length headless (setscrew) head style 20 thread quantity per inch point diameter flattened to 0.062 in. wide with 2 straight sides phosphate surface treated unc thread series
2a thread class right-hand 0.623" thread length knurled no. 2 head style 18 thread quantity per inch chromium threads surface treated unc thread series