3a 2nd end thread class 12 1st end thread quantity per inch 1st end bulkhead thread size 1.062 in. nom, qty per in. 12, class 3a, un anodize surface treated un 1st end thread series
Used on aircraft application. 3a 1st end bulkhead thread class 12 1st end bulkhead thread quantity per inch passivate surface treated unj 1st end bulkhead thread series
3a 2nd end bulkhead thread class 12 2nd end bulkhead thread quantity per inch flanged mount on first end w/one bolt hole un 2nd end bulkhead 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
Used on surface attack missile system mgm 31a, f16 and f18 aircraft. 3a 1st end bulkhead thread class passivate surface treated unjf all ends thread series