Stop moisture, road debris, and slag from ruining your threads. Our Slim Top Hat Blind Steel Bungs feature a closed-bottom design to completely seal off frame tubes, fuel tanks, oil tanks, and fender mounts while maintaining a super tight look.
Machined with a slimmed-down outer body diameter, these bungs allow you to drop straight into a 12mm drilled hole without needing expensive large drill bits, oversized step drills or excessive fabrication time. The top hat flange ensures the bung seats perfectly square against sheet metal or mounting tabs without dropping through during welding
- Material: Easy-to-weld Mild Steel (coated with light protective anti-rust film)
- Thread Size: 5/16" UNC (18 TPI)
- Thread Depth: 19.05mm
- Outer Diameter (OD): 11.95mm (Fits standard 12mm drilled holes)
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Flange Diameter: 19.00mm
- Flange Thickness: 3.20mm
- Overall Length: 25.40mm
- Design: Closed-bottom (blind) to keep moisture and contaminants out of customer frames and tanks
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Quantity: Sold as pack of 4
Applications - Custom fuel tank & oil tank mounting tabs
- Fender & Sissy bar mounts
- Frame mounting tabs (exhaust) & wiring mounts
- Low-clearance custom motorcycle & fabrication projects