3a all ends thread class 3.080" overall length 12 all ends thread quantity per inch anodize body surface treated male coupling half un all ends thread series
Used on phantom f-4 aircraft. 3a 2nd end thread class 12 1st end thread quantity per inch 1st end bulkhead thread size 1.625 in. nom, qty per in. 12, class 3a, unj cadmium inside surface treated unj 1st end thread series