3a 2nd end thread class 12 2nd end thread quantity per inch second end bulkhead, unj, 1.312 in. thd size, 3a class anodize inside surface treated un 3rd end thread series
3a 3rd end thread class 12 1st end thread quantity per inch machined groove in flared end to accommodate seal ring per KC103 passivate outside surface treated un 3rd end thread series
2b 2nd end thread class 18 2nd end thread quantity per inch machined groove in flared ends to accommodate seal rings per KC103 passivate outside surface treated unf 1st end thread series
2b 2nd end thread class 12 1st end thread quantity per inch machined groove in flared ends to accommodate seal rings per KC103 passivate outside surface treated un all ends thread series
2b 3rd end thread class 18 2nd end thread quantity per inch machined groove in flared ends to accommodate seal rings per KC103 passivate outside surface treated unf 1st end thread series
2b 3rd end thread class 12 1st end thread quantity per inch machined groove in flared ends to accommodate seal rings per KC103 passivate outside surface treated un all ends thread series
Used on helicopter, sea knight h-46. 3a 3rd end thread class 14 all ends thread quantity per inch weapon system essential unj 1st end bulkhead thread series
