2a thread class right-hand 0.440" thread length flat chamfer head style 24 thread quantity per inch shoulder 0.315 in min, 0.325 in max lg; 0.494 in min, 0.499 in max dia unf thread series
2a thread class right-hand 0.247" thread length double chamfer head style 40 thread quantity per inch grip 1.625 in. nom lg; 0.135 in. min 0.145 in max dia; threads on shank 0.350 in. min 0.410 in. max lg; 0.190-32unf-2a; 96 dp raised diamond knurl head passivate surface treated unc thread series
3a thread class right-hand 0.750" thread length flat chamfer head style 0.044" hole diameter 24 thread quantity per inch navy special project cadmium surface treated unf thread series
3a thread class right-hand 0.375" thread length round extended washer head style 32 thread quantity per inch o-ring under head passivate fastener surface treated unc thread series