2a thread class right-hand 0.634" thread length flat countersunk head style 24 thread quantity per inch navy special project oxide surface treated unc thread series
2a thread class right-hand 0.500" thread length 16 thread quantity per inch navy special project furnished with nylon pad ball bearing 0.250 lg., 0.293 dia. unc thread series
3a thread class right-hand flush countersunk head style 0.365" grip length 23900 double pounds per square inch shear strength nickel surface treated unf thread series
3a thread class right-hand 0.875" thread length flat chamfer head style 11 thread quantity per inch navy special project passivate surface treated unc thread series