ADS Environmental Services FlowShark QR 775003 A2 - Manual (Page 183)

Monitor Installation 7-7
5. Chase the threading action at intervals to clear the metal debris
by backing the tap almost completely out of the hole and then
screwing it back into the hole. Lubricate the hole between
threading.
6. Place two 3/8 – 16 hex nuts (with a 3/8-inch washer in
between) onto one end of a 3/8-inch x 2-inch stud.
Placing two nuts and a washer onto the stud
7. Using two wrenches, turn the inner nut counter-clockwise and
the outer nut clockwise simultaneously to bind the two nuts
together on the stud.