Get the best Bung for your Buck! Pro-Werks Weld Plumbing Bungs are available in weld-able 6061-T6 Aluminum or Mild Steel, produced on machining centers responsible for so many of our precision parts. Available in both Male and Female versions. The Pro-werks Male weld bungs feature a contoured inlet for maximum flow - precision CNC machined and available in your choice of 6061-T6 Aluminum or Mild steel. You will appreciate the stepped shoulder at the base of the bung, it serves as a positioning locator. This design feature holds the bung in place while welding in a hole of a flat surface, or in the end of tubing. Ample cross section in the weld land also helps to reduce warping during welding./p> Contoured for Optimum Flow -4 AN Male Bung3/4 in. diameter, also fits tube 3/4 in. diameter x 0.058 in. thick -6 AN Male Bung7/8 in. diameter, also fits tube 7/8 in. diameter x 0.058 in. thick -8 AN Male Bung1 in. diameter, also fits tube 1 in. diameter 0.058 in. thick -10 AN Male Bung1-1/8 in. diameter, also fits tube 1-1/8 in. diameter 0.058 in. thick -12 AN Male Bung1-3/8 in. diameter, also fits tube 1-3/8 in. diameter 0.058 in. thick -16 AN Male Bung1-5/8 in. diameter, also fits tube 1-5/8 in. diameter 0.058 in. thick Female Weld Bungs -4 AN Female Bung7/16-20 Thread(Steel - 3/4 in. OD) -6 AN Female Bung9/16-18 Thread(Steel - 7/8 in. OD) -8 AN Female Bung3/4-16 Thread(Steel - 1-1/8 in. OD) -10 AN Female Bung7/8-14 Thread(Steel - 1-1/4 in. OD) -12 AN Female Bung1-1/16 -12 Thread(Steel - 1-1/2 in. OD) -16 AN Female Bung1-5/16-12 Thread(Steel - 1-3/4 in. OD) Popular AN weld bung uses: Fuel tanks Dry Sump tanks Valve cover venting Oil pans Click here to see Pro-werks Fill Cap Assemblies Make things easy by using the best bungs available – by Pro-werks.Note: Welding should always be performed by a qualified welder.