2a thread class right-hand 0.375" thread length fillister head style 0.064" hole diameter 20 thread quantity per inch navy special project passivate surface treated unc thread series
3a thread class right-hand 0.490" thread length 32 thread quantity per inch one hole 0.04 in. min, 0.05 in. max dia, drilled thru end opposite the point passivate surface treated unc thread series
2a thread class right-hand 0.160" thread length flat chamfer head style 0.064" hole diameter 28 thread quantity per inch passivate surface treated unf thread series
3a thread class right-hand 1.375" thread length headless (setscrew) head style 24 thread quantity per inch 125 microinch rms finish od of point top unf thread series