Used on w/s:aircraft, galaxy c-5. 3a thread class right-hand 0.807" grip length 20 thread quantity per inch 95000 single pounds per square inch shear strength unjf thread series
3a thread class right-hand 0.323" thread length pan head style 0.115" grip length 32 thread quantity per inch cadmium surface treated unjc thread series
3a thread class right-hand 0.425" thread length dished hexagon head style 3.085" grip length 28 thread quantity per inch passivate surface treated unf thread series