3a 2nd end thread class 18 2nd end thread quantity per inch machined groove in flared ends to accommodate seal rings per KC103, 0.375 in. od tube size boss passivate inside surface treated unf 1st end thread series
3a all ends thread class 18 2nd end thread quantity per inch third end bulkhead, unf, 0.750 in. td size, 3a class anodize surface treated unf 1st end 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 boeing vertol cargo transport helicopter,model ch-47. 3a 2nd end thread class 12 1st end bulkhead thread quantity per inch anodize surface treated unj 1st end bulkhead thread series
Used on boeing vertol cargo transport helicopter, model ch-47. 3a 3rd end thread class 12 1st end bulkhead thread quantity per inch anodize surface treated unj 1st end bulkhead thread series
Used on 05f aircraft, stratolifter c-135. 3a 3rd end thread class 12 1st end bulkhead thread quantity per inch cadmium surface treated unj 1st end bulkhead thread series