3a 2nd end thread class 12 1st end thread quantity per inch grumman aircraft corp, a-10 aircraft model anodize inside surface treated un 1st end thread series
3a all ends thread class 12 all ends thread quantity per inch grumman aircraft corp, a-10 aircraft model anodize surface treated un all ends thread series
3b internal thread class right-hand internal cap drilled for attachment of safety chain passivate surface treated cap, tube, flared unf internal thread series
3a first fluid end connection thread class 4.919" overall length 12 first fluid end connection thread quantity per inch anodize surface treated coupling assembly un first fluid end connection thread series
