2a thread class right-hand 2.000" thread length hexagon head style 10 thread quantity per inch washer 0.108 in.thk, 1.750 in.dia, welded on top of head cadmium surface treated unc thread series
Used on tank, sheridan m-551. 2a thread class right-hand 1.000" thread length hexagon head style 16 thread quantity per inch with two pellets in thread cadmium surface treated unc thread series
Used on spec item. 2a thread class right-hand 1.750" thread length hexagon head style 0.096" hole diameter 10 thread quantity per inch cadmium surface treated unc thread series