3a thread class right-hand 0.444" thread length flat countersunk head style 0.740" grip length 28 thread quantity per inch tapped hole in head 0.1380-32, unjc-3b threads; distance from head top to injection port 0.150 in.; injection port 0.120 in. lg, 0.60 in. diameter unjf thread series
3a thread class right-hand 0.420" thread length flat chamfer head style 0.026" hole diameter 40 thread quantity per inch cadmium surface treated unc thread series