flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.407" grip length 9000 double pounds per square inch shear strength cadmium body surface treated
2a thread class right-hand 0.400" thread length flat chamfer head style 20 thread quantity per inch verical knurls, color black oxide surface treated unc thread series
3a thread class right-hand 0.438" thread length dished hexagon head style 0.047" grip length 28 thread quantity per inch cross recess drive in head; color green unf thread series
3b thread class right-hand flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.375 " grip length 16 thread quantity per inch 125000 single pounds per square inch shear strength furnished without bolt cadmium expander surface treated unjc thread series
3a thread class right-hand 0.400" thread length dished hexagon head style 1.240" grip length 28 thread quantity per inch cadmium surface treated unjf thread series
2a thread class right-hand 1.313" thread length flat countersunk head style 18 thread quantity per inch navy special project passivate screw surface treated unc thread series
2a thread class right-hand 1.459" thread length flat countersunk head style 24 thread quantity per inch navy special project passivate screw surface treated unc thread series