3a all ends thread class 2.115" overall length bulkhead threads on fluid end connection passivate body surface treated male coupling half unjf all ends thread series
3a all ends thread class 2.993" overall length 12 first quick disconnect end thread quantity per inch bulkhead fluid end anodize body surface treated male coupling half un all ends thread series
Used on nimitz class cvn; arleigh burke class ddg; wasp class lhd; wichita class aor; mars class t-afs 1; fire pumps. hexagon, external thread, inverted flare