3a external thread class right-hand external 0.790" overall length 0.080 in. deep slot drive; 0.109 in. lg by 0.635 in. dia groove on head anodize surface treated plug, machine unc external thread series
Used on 17f aircraft, corsair a-7d. 3a 3rd end bulkhead thread class 12 1st end thread quantity per inch anodize surface treated unj 1st end thread series
Used on aircraft application. 3a 2nd end thread class precious metal, gold, weight, 0.0010 pound per elbow, gold brazing ring located on first end passivate inside surface treated unjf 2nd end thread series
4 1st end bolt hole quantity two opposite flange edges flatted, 2.250 in. lg across flats, flats run opposite of elbow bend angle, two identical mtg holes centered between flats on 3.000 in. dia bolt circle
3a 1st end thread class 1st end bulkhead thd size 0.875 in. nom, cl 3a, unjf, precious metal, gold, weight 0.0033 pound per elbow, gold brazing ring on second end cadmium surface treated unjf 1st end thread series
