Used on f/a-18 hornet aircraft. 3a 2nd end bulkhead thread class 12 1st end thread quantity per inch weapon system essential chromate surface treated unj 1st end thread series
3a all ends thread class 2.947" overall length 12 all ends thread quantity per inch anodize body surface treated male coupling half un all ends thread series
3a 3rd end thread class polytetrafluoroethylene coating shall cover all external permaswage surfaces passivate surface treated unjf 3rd end thread series