3a first fluid end connection thread class 4.640" overall length anodize surface treated coupling assembly unf first fluid end connection thread series
3a all ends thread class 2.844" overall length 12 all ends thread quantity per inch anodize body surface treated male coupling half un all ends thread series
3a all ends thread class 2.735" overall length 12 first quick disconnect end thread quantity per inch anodize body surface treated male coupling half un all ends thread series