2a thread class right-hand 0.151" thread length flat countersunk undercut head style 56 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 0.313" thread length double chamfer head style 32 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 0.600" thread length hexagon head style 28 thread quantity per inch apply solid film lubricant to screw threads only i/a/w mil-l-6937 unf thread series
3a thread class right-hand 0.250" thread length flat chamfer head style 56 thread quantity per inch passivate fastener surface treated unrc thread series
3a thread class right-hand 0.375" thread length flat chamfer head style 56 thread quantity per inch passivate fastener surface treated unrc thread series
2a thread class right-hand 0.375" thread length flat countersunk undercut head style 56 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 0.157" thread length undercut pan no. 2 head style 40 thread quantity per inch passivate screw surface treated unc thread series