GAsupply spline lug nuts M12x1.5 — 20pc Chrome 35mm Tall 60° Conical with Duplex Key

GAsupply 12x1.5 spline lug nuts are a 20-piece chromed acorn set with a 35mm (1.38") tall conical seat design and one duplex spline key for secure, tamper-resistant wheel fastening.

If you need replacement tuner-style lug nuts for wheels that accept M12x1.5 studs with a 60° conical seat, this complete kit supplies 20 hardened steel spline lug nuts and a dedicated key so you can mount wheels with a cleaner, factory-like appearance. The lugs are manufactured as one-piece units, finished in chrome plating and protected with anti-rust treatment to resist corrosion and maintain shine under road conditions. They are sized for common tuner and aftermarket wheels but require confirmation that your wheel studs and seat angle match before ordering.

How do these lug nuts fit my wheels?

These lug nuts are built specifically for studs with an M12x1.5 thread pitch and a 60° conical seat. They will not fit wheels designed for different thread sizes or seat types, so matching the lug thread and seat geometry is essential to safe installation.

• Thread size: M12 x 1.5 (12x1.5)
• Seat: 60° conical (conical seat)
• Height: 35 mm (1.38") tall acorn profile
• Quantity: 20 lug nuts plus 1 duplex spline key

What tools and steps should I use to install them?

Installation is straightforward but should be done carefully. Use a manual wrench to avoid over-torquing; avoid impact wrenches which can damage the spline pattern and alter torque accuracy.

• Key required: included duplex spline key matched to the spline pattern
• Wrench sizes: fits 3/4" (19 mm) and 13/16" (21 mm) tool openings
• Recommended: hand torque wrench to factory torque spec for your vehicle
• Professional installation suggested if you lack wheel-fitment experience

What materials and corrosion protection do these nuts offer?

Each lug nut is made from a single-piece forged steel construction for strength and integrity. They receive multi-layer chrome plating and anti-rust treatment to improve corrosion resistance and preserve appearance over time.

• Construction: solid one-piece steel design
• Finish: multi-layer chrome plating for shine and protection
• Corrosion testing: salt spray resistance applied during production
• Additional: anti-rust oil coating for extended shelf and road life

Who is this for? These GAsupply spline lug nuts suit drivers upgrading to tuner-style chromed acorn nuts, owners replacing worn or damaged lug hardware on M12x1.5 stud wheels, and shops fitting aftermarket wheels that require a 60° conical seat. If you drive a vehicle with compatible studs and want a durable, visually clean fastening solution—backed by a dedicated spline key—this 20-piece kit simplifies installation while keeping wheel aesthetics consistent. Confirm fitment for your specific wheel and vehicle before purchasing and use proper hand tools to secure them to factory torque specifications.