3b thread class right-hand 2.500" overall length 2.500" overall width four mtg holes 0.390 in. dia located 1.630 in. by 1.750 in. c to c anodize surface treated 1 fluid connection
Used on aircraft application. 3a thread class right-hand 1.000" overall length 2.500" overall width designed for working pressure of 3000 psi anodize surface treated 2 fluid connections