3a all ends thread class 3.562" overall length 12 all ends thread quantity per inch anodize body surface treated male coupling half unj all ends thread series
2a first fluid end connection thread class 4.570" overall length anodize surface treated coupling assembly unf first fluid end connection thread series
2a 2nd end thread class 18 2nd end thread quantity per inch two 0.062 in. dia holes in hex for lockwire rigid, short center wrenching facility uns 2nd end thread series
