3a all ends thread class 16 3rd end thread quantity per inch inverted-flare ends dark-gray plastic coated plastic outside surface treated unj 3rd end thread series
Used on aircraft, eagle f-15. 3a 2nd end thread class grumman a-10 aircraft; weapon system essential anodize inside surface treated npt 3rd end thread series
Used on aircraft, c-5(galaxy). 3a all ends thread class 12 all ends thread quantity per inch weapon system essential anodize surface treated unj all ends thread series
