2a thread class right-hand 0.560" thread length headless (setscrew) head style 24 thread quantity per inch 0.156 in. dia hole through counterbore 0.234 in. dia 0.190 in. deep from drive end anodize surface treated unf thread series
2a thread class right-hand 1.000" thread length headless (setscrew) head style 32 thread quantity per inch 0.3740-0.3745 in. dia spherical ball point oxide surface treated unef thread series
3a thread class right-hand 0.250" thread length headless (setscrew) head style 32 thread quantity per inch knurled cup point oxide surface treated unc thread series