Used on grumman aerospace a10 aircraft. 3a all ends thread class 12 all ends thread quantity per inch passivate surface treated flared w/ center wrenching facility un all ends thread series
3a all ends thread class 4.016" overall length 12 all ends thread quantity per inch anodize body surface treated male coupling half un all ends thread series
3a all ends thread class 4.719" overall length 12 all ends thread quantity per inch anodize body surface treated male coupling half un all ends thread series
3a 1st end bulkhead thread class 12 1st end bulkhead thread quantity per inch anodize surface treated flared w/ bulkhead thread unj 1st end bulkhead thread series