3a first fluid end connection thread class 5.196" overall length 12 first fluid end connection thread quantity per inch anodize surface treated coupling assembly un first fluid end connection thread series
Used on engine,turbojet,acft. four tabs extended at right angle to body w/0.276 to 0.286 in. holes rectangular w/ or w/o mtg holes (incl square) (basically flat)
Used on aircraft application;aircraft, galaxy c-5. 3a 1st end bulkhead thread class weapon system essential cadmium surface treated flaremess w/ bulkhead threads unjf all ends thread series