2a thread class right-hand 0.258" thread length headless (setscrew) head style 32 thread quantity per inch contains 0.0312 relief passivate surface treated unc thread series
2a thread class right-hand 0.490" thread length headless (setscrew) head style 20 thread quantity per inch 3 slots on circumference of head 120 degrees apart cadmium surface treated unf thread series
3a thread class right-hand 0.810" thread length hexagon head style 0.072" hole diameter 24 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.059" thread length knurled no. 1 head style 80 thread quantity per inch navy special project cadmium surface treated unf thread series
Used on spec item. 3a thread class right-hand 0.537" thread length headless (setscrew) head style 24 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.240" thread length headless (setscrew) head style 56 thread quantity per inch passivate surface treated unjc thread series