Used on 05a helicopter, chinook, ch-47. 3a 1st end bulkhead thread class 12 1st end bulkhead thread quantity per inch anodize surface treated unj 1st end bulkhead thread series
3a all ends thread class 14 all ends thread quantity per inch cadmium inside surface treated flared w/ center wrenching facility uns all ends thread series
3a 2nd end thread class 20 1st end thread quantity per inch anodize inside surface treated flared w/ center wrenching facility uns 1st end thread series
Used on 23n ship, ohio class 22n (trident). 3a all ends thread class 1.860" overall length passivate body surface treated male coupling half unf all ends thread series