3a 2nd end thread class 12 1st end thread quantity per inch 1st end bulkhead thd size 1.875 in. nom, cl 3a, unf anodize surface treated un 1st end thread series
3a all ends thread class 2.027" overall length grumman aerospace corp A10 aircraft anodize body surface treated male coupling half unf all ends thread series
18 2nd end thread quantity per inch wrenching FEATURE0.243 in min, 0.255 in max wd, 2 lockwire holes 0.057 in min dia, 0.062 in max dia uns 2nd end thread series