WF-N013 Anti‑Rust Bulge Conical Open End Lug Nut

Material Selection: Manufactured from high-quality cold-heading alloy steel with high tensile and yield strength, helping reduce the risk of cracking or breakage under demanding fastening conditions.
Heat Treatment: Processed through continuous carburizing, quenching, and tempering in a mesh-belt furnace. The resulting mechanical properties are aligned with Grade 10.9 / SAE Grade 8 requirements, helping the threads resist stripping under high tightening torque.
Cold Heading: Multi-station integrated cold-heading technology helps maintain continuous internal grain structure. The protective anti-corrosion coating is also evaluated through rigorous salt spray testing.

Modification & Off-Road Upgrades: The open-end design is suitable for extended wheel studs and is well suited to off-road vehicles, racing vehicles, and modified cars requiring aftermarket wheel installation.
Passenger & Commercial Vehicles: Suitable for routine replacement and wheel upgrades on aluminum alloy and steel wheels, providing compatible conical seating for OEM-style or aftermarket wheel applications.
Harsh Driving Environments: Suitable for coastal areas with high salt exposure, winter roads treated with de-icing salt, and muddy off-road conditions, helping reduce the risk of corrosion and seized lug nuts.

Large Contact Area: The Bulge design provides a larger contact area than conventional conical lug nuts, helping distribute pressure around the wheel mounting hole and reduce the risk of localized deformation.
Rust & Corrosion Resistance: Enhanced surface coating helps resist stone-chip abrasion, moisture, and chemical corrosion, maintaining surface protection during extended use.
Precision Anti-Loosening Threads: Precision-manufactured threads provide smooth installation and consistent engagement, while the properly matched thread design supports resistance to vibration-induced loosening.