3a thread class right-hand 0.880" thread length hexagon head style 12 thread quantity per inch cadmium surface treated concentric hole unthreaded unf thread series
3a thread class right-hand 1.479" thread length hexagon head style 24 thread quantity per inch navy special project counterbore unthreaded unf thread series
3a thread class right-hand 0.250" thread length hexagon head style 24 thread quantity per inch prime coat head only an-p-656a cadmium surface treated unf thread series
Used on pratt & whitney jet engines & components, f-100-p-100. 3a thread class right-hand 0.418" thread length double hexagon w/hole head style 28 thread quantity per inch chromium grip surface treated unjf thread series
3a thread class right-hand 0.510" grip length 32 thread quantity per inch 156000 single pounds per square inch shear strength nickel surface treated unjf thread series
3a thread class right-hand 0.255" grip length 24 thread quantity per inch 125000 single pounds per square inch shear strength passivate surface treated unjf thread series
2a thread class right-hand 0.758" thread length flat countersunk head style 40 thread quantity per inch passivate screw surface treated unc thread series
