3/8" UNF competition open bulge wheel nut

Product Details

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Secure your wheels with confidence using these high-strength 3/8" UNF competition wheel nuts. Engineered for the rigours of motorsport, these open-ended bulge nuts feature a precision 60-degree taper to ensure perfect centring and maximum clamping force for your historic racer.

Product Specs

  • Thread: 3/8" UNFSeat Type: 60-degree taper (conical)
  • Design: Open-ended "bulge" style for competition use
  • Compatibility: Classic Mini, MG Midget, and various historic race cars
  • Quantity: Sold individually

Why Choose These Competition Nuts?

  • Precision Alignment: The 60-degree taper is machined to exacting tolerances, providing a secure, vibration-free interface between the stud and the wheel.
  • Open-Ended Design: Ideal for race applications using extended wheel studs, allowing the stud to pass through the nut for full thread engagement and easy inspection.
  • Bulge Profile: Provides an increased surface area for the lug wrench, reducing the risk of slipping or rounding during rapid pit stops or wheel changes.
  • Historic Compatibility: A direct fit for the standard 3/8" studs found on the most iconic British clubman and historic circuit cars.

Installation Tip: Always ensure your wheel seats match the 60-degree taper of these nuts. For competition use, we recommend checking torque settings after every heat to account for the thermal expansion and vibrations of track driving.

Key Point: Engineered specifically for historic race cars using standard 3/8" studs.


[3/8" UNF competition wheel nuts. 60 degree taper. Suitable for Mini and Midget and many other historic race cars using 3/8" studs. Sold individually.]

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3/8" UNF competition open bulge wheel nut