AUTOPTIM 7/16-20 Spline Lug Nuts 20pcs Chrome Closed-End with 17mm Socket — Triple Chrome, One-Piece Strength

AUTOPTIM 7/16-20 spline lug nuts are a set of 20 chrome, closed-end, one-piece lug nuts with a matching socket designed for a secure, anti-rust wheel fit. These lug nuts are engineered for drivers who want a durable, corrosion-resistant wheel fastener that matches 7/16-20 thread applications. Finished in triple chrome plating and produced by cold-forging and heat-treatment, the kit includes twenty conical-seat nuts and a dedicated socket so you can replace all fasteners on a single axle without hunting for tools.

Will these lug nuts fit my vehicle with 7/16-20 threads?

Yes — these nuts are machined for a 7/16-20 thread pitch and a 60° tapered conical seat, which is a common specification for lighter trucks, trailers, and some aftermarket wheels. Confirm your wheel stud size and seat angle before purchase to ensure compatibility.

• Thread size: 7/16-20 (verify against your studs)
• Seat angle: 60° tapered conical seat
• Dimensions: 17 mm hex, 35 mm length, 20 mm face width

How durable and rust-resistant are these chrome lug nuts?

The nuts use a triple-chrome finish over cold-forged, heat-treated steel, giving elevated resistance to corrosion and wear compared with untreated fasteners. The single-piece construction also reduces failure points common in two-piece designs.

• Cold-forged and heat-treated steel for strength
• Triple chrome plating to resist rust and surface wear
• Closed-end design keeps debris and moisture out of the threads

Are these nuts easy to install and safe for driving?

Installation is straightforward: use the included socket for correct engagement with the 17 mm hex and torque to your vehicle manufacturer’s specification. The one-piece construction and precision-thread fit reduce the risk of loosening or cracking during normal driving conditions.

• Includes a matched socket for secure installation
• One-piece design reduces cracking risk compared to two-piece nuts
• Precision-thread fit ensures a tight connection to the stud

What does the kit include and how do I maintain them?

The package contains 20 closed-end lug nuts and a single socket sized for the nuts’ 17 mm hex. Routine maintenance is minimal — clean and inspect the nuts and studs after harsh winter or off-road use, and re-torque to spec after the first 50–100 miles post-installation.

• 20 chrome closed-end lug nuts (one-piece)
• 17 mm socket included for installation
• Recommended: inspect, clean, and re-torque after initial installation

Who is this for? This AUTOPTIM kit suits vehicle owners who need a full replacement set of lug nuts with a 7/16-20 thread size — especially those seeking a polished chrome look, stronger one-piece construction, and improved corrosion resistance. It’s a practical choice for light-truck or trailer owners, DIY mechanics refreshing wheels, and anyone who wants matched fasteners and a socket in a single purchase. AUTOPTIM offers 12 months of customer support should you have fitment or product questions.

FAQ

Q: Do these lug nuts fit 7/16-20 wheel studs?

A: Yes, they are machined for 7/16-20 threads; verify your vehicle studs and seat angle before installing.

Q: Is the socket included in the kit?

A: Yes, a 17 mm socket is included to install the closed-end nuts supplied in the 20-piece set.