Used on 26f aircraft, f-16.. 3b 1st end thread class 20 1st end thread quantity per inch 2nd end id green plastic coated passivate inside surface treated swaged unjs 1st end thread series
3b 1st end thread class 20 1st end thread quantity per inch polytetrafluoroethylene coat to extend distance of 0.435 in. into fitting bore on second end lubricant dry film surface treated swaged unjs 1st end thread series
Used on 55n aircraft, harrier av-8b. 3a 2nd end thread class 18 2nd end thread quantity per inch flareless ends dark-gray plastic-coated phosphate nut surface treated unjs all ends thread series