3b all ends thread class drill 0.070 in. hole for lockwire, bulkhead, unf thd series, 0.625 in. thd size second end primer surface treated rigid, short center wrenching facility unf all ends thread series
Used on aircraft--b-1b, hornet f/a-18, b-2 bomber; awacs e-3a, eagle f-15, f-16, phantom f-4;trainer, b-1b aircraft; support equipment, b-2 bomber. 3a all ends thread class 18 1st end thread quantity per inch weapon system essential unjef 2nd end thread series