3a thread class right-hand 0.6825" grip length 32 thread quantity per inch 125000 single pounds per square inch shear strength cadmium surface treated unjf thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.501" grip length 566000 single pounds per square inch shear strength
2a thread class right-hand 0.224" thread length flat chamfer head style 40 thread quantity per inch navy special project passivate surface treated unc thread series
3a thread class right-hand 0.345" thread length dished hexagon head style 1.302" grip length 32 thread quantity per inch passivate surface treated unjf thread series
2a thread class right-hand headless (setscrew) head style 80 thread quantity per inch threads in drive end 0.250-20 unc-2a passivate surface treated un thread series
2a thread class right-hand 1.610" thread length knurled no. 1 head style 20 thread quantity per inch navy special project passivate surface treated unc thread series