2a thread class right-hand 0.750" thread length flat chamfer head style 20 thread quantity per inch optional internal drive style torque set cadmium surface treated unc thread series
3a thread class right-hand 0.562" thread length headless (setscrew) head style 24 thread quantity per inch 1 drilled hole 0.064 in. dia in drive end cadmium surface treated unf thread series
1a thread class right-hand 0.385" thread length hexagon head style 28 thread quantity per inch 2 holes 0.047 in. to 0.053 in. dia 90 degrees a part drilled approx. 0.190 in. from end of point passivate surface treated unf thread series