2a thread class right-hand 0.619" thread length hexagon head style 0.0605" hole diameter 20 thread quantity per inch zinc fastener surface treated unc thread series
2a thread class right-hand 1.313" thread length fillister head style 0.042" hole diameter 32 thread quantity per inch cadmium screw surface treated unc thread series
3a thread class right-hand 0.460" thread length flat countersunk head style 28 thread quantity per inch cadmium screw surface treated unf thread series
3a thread class right-hand flush countersunk head style 0.615" grip length 24 thread quantity per inch 108000 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 0.125" grip length 112000 single pounds per square inch shear strength cadmium surface treated
Used on aircraft, eagle f-15. 3a thread class right-hand 0.444" thread length oval countersunk head style 0.365" grip length 28 thread quantity per inch aluminum surface treated unjf thread series
3a thread class right-hand 1.590" thread length flat chamfer head style 0.061" hole diameter 20 thread quantity per inch cadmium surface treated unrf thread series
2a thread class right-hand 0.750" thread length hexagon head style 20 thread quantity per inch locking feature material epoxy plastic zinc fastener surface treated unc thread series
3a thread class right-hand 0.154" thread length pan head style 32 thread quantity per inch passivate screw surface treated undercut 0.095 inch min, 0.105 inch max dia. 0.055 inch min unjc thread series