WF- N028B Spline Drive Bulge Acorn Locking Lug Nut

High-Strength Material: Manufactured from high-strength alloy steel using precision cold-heading technology for integrated forming and consistent mechanical performance.
Heat Treatment: Undergoes controlled quenching and tempering to achieve high-strength mechanical properties aligned with Grade 10.9 requirements, providing good tensile and shear resistance.
Corrosion-Resistant Surface Treatment: Available with multi-layer chrome plating, black zinc, or Dacromet-style coatings. The surface can undergo more than 72 hours of Neutral Salt Spray (NSS) testing to improve corrosion resistance and rust protection while maintaining a durable finish.

Spline Drive Anti-Theft Design: Uses a specialized spline drive interface that requires a matching key socket. Conventional six-point hex tools cannot easily remove the lug nut, providing an additional layer of wheel security.
Bulge Acorn Seat: The 60-degree conical Bulge-style seating design increases the contact area with compatible wheel mounting holes, helping distribute clamping pressure more evenly, reduce the risk of loosening, and protect the wheel surface around the mounting area.
Small Outside Diameter: Designed for aftermarket wheels with narrow mounting holes, helping reduce the risk of contact or scratching around the wheel lug holes during installation.

Aftermarket & Narrow-Hole Wheels: Particularly suitable for modified wheels and aftermarket applications requiring a compact outside-diameter lug nut.
Passenger Cars & Off-Road Vehicles: Suitable for passenger cars, SUVs, light-duty trucks, and other vehicles where enhanced wheel security, fastening performance, and appearance are required.