Billet Proof® Blind Tophat Bung with 3/8”-16 Internal Thread - Mild Steel or Aluminum - Made In The USA

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Blind Tophat® Bung – 3/8”-16 Internal Thread

Made in USA from Steel or Aluminum.


  • Sold Individually (discounts apply at quantities of 10 and up)
  • The perfect kit for mounting a custom steel oil bag or gas tank.
  • The "shoulder" of the bung allows for an easy install. Drill a 3/4" hole, drop it in and weld.
  • 3/8”-16 Female Thread Pitch.
  • Bungs are machined in house from Mild Steel (1018 Cold Finish) or Aluminum (6061-T6)
  • We offer MANY different sizes and styles of bungs and tabs.
  • NOTE: Contact us for a quote for quantities over 50


  • Overall OD           =           1"
  • Smaller OD          =           .74"
  • Step Height          =           .25"
  • Total Height         =           1.25"


  • Machined Finish


  • Universal Fitment Item.
  • Any STEEL oil bag or gas tank that will accommodate the above listed dimensions.

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  • 5
    Product quality and service

    Posted by Karl on 2nd Oct 2019

    I found this Company and purchased a few fab parts to mount an intercooler. The price was low but the quality was high. The parts were made in the USA and Dan seems pretty cool.