2a 2nd end thread class drilled 0.090 in. dia thru both walls first end for leak check; 0.750 in. hex wrenching facility first end unf 1st end thread series
2a 2nd end thread class drilled 0.090 in. dia thru both walls first end for leak check; 0.750 in. hex wrenching facility first end; second end drilled 0.080 in. dia thru 2walls 2 places 90 degrees apart for air flow diffusion unf 1st end thread series
Used on aircraft, f-14a. 3a all ends thread class 20 1st end thread quantity per inch hex drilled for lockwire, 2 holes, 180.0 deg apart; weapon system essential unjf 2nd end thread series
2a 2nd end thread class 20 2nd end thread quantity per inch 2 lockwire holes 0.060 in. dia; w/1 sleeve anodize surface treated unf 1st end thread series
