Used on 1230-01-503-7784. item includes an aluminum flange, that measures 0.250"thick; a butyl rubber ball that is 1.500" in diameter; all but spherical surface has a black powder protective finish
Used on mk 13, mod 4 gm. 2a thread class right-hand 0.500" thread length hexagon head style 28 thread quantity per inch material is an alloy steel, grade 8 zinc surface treated unf thread series
2a thread class right-hand 0.440" thread length flat countersunk head style 32 thread quantity per inch passivate screw surface treated unc thread series