AUTOPTIM 1/2-20 Spline Lug Nuts — 23-Piece Black Closed-End Set with Socket, 17mm Hex, Triple Chrome

This kit combines one-piece, cold-forged steel lug nuts finished in black with a dedicated socket so you can replace worn or mismatched nuts quickly. The nuts use a 1/2"-20 thread, a 60° tapered seat and a 17 mm hex profile, offering dependable engagement with factory-style wheels. Built to resist corrosion and cracking through heat treatment and triple chrome plating, this set aims to deliver long service life and consistent wheel clamping.

Will these nuts fit my Jeep and wheel type?

These lug nuts are designed to match common aftermarket and factory-style wheels on many Jeep models listed for fitment. Confirm your wheel uses a 1/2"-20 stud and a 60° tapered seat, and verify the 17 mm hex and 35 mm overall length work with your wheel's lug well. They are specified for popular Jeep builds but always double-check wheel specifications before buying.

• Thread: 1/2"-20 (UNF)
• Seat: 60° tapered
• Hex: 17 mm for socket engagement
• Length/width: 35 mm length, 20 mm width
• Common fit examples: Wrangler (1987–2018), Liberty (2002–2012), Grand Cherokee (1993–2010), Cherokee (1984–2001)

How durable and corrosion-resistant are these closed-end nuts?

The nuts are cold-forged from steel and undergo heat treatment to increase strength and toughness. A triple chrome plating finish adds a protective layer against road salt and moisture, while the closed-end design prevents debris and moisture from entering the stud area. Together these features reduce the risk of corrosion and extend usable life compared with basic plated nuts.

• Material: cold-forged steel with heat treatment
• Finish: triple chrome plating for rust resistance
• Design: closed-end to keep out contaminants
• One-piece construction reduces failure points

Why choose one-piece spline lug nuts over two-piece alternatives?

One-piece lug nuts eliminate the separate sleeve or cap common to two-piece designs, reducing potential weakness at the joint. This simplified construction improves structural integrity under repeated torque cycles and lowers the chance of cracking or loosening. For owners prioritizing safety and longevity, one-piece nuts offer a more robust solution for wheel retention.

• Single-piece build minimizes failure points
• Tighter thread engagement for consistent clamping
• Reduced maintenance compared with multi-part nuts
• Better resistance to cracking under stress

What’s included and how easy is installation?

The package contains 23 black closed-end spline lug nuts and a matching socket sized for the 17 mm hex. Installation follows the same procedure as standard lug nut replacement: hand-thread each nut to avoid cross-threading, then torque to your vehicle manufacturer’s specification with a calibrated torque wrench. The included socket helps you get started right away.

• 23 closed-end lug nuts (black finish)
• 17 mm compatible socket included
• Recommended: use a torque wrench and follow factory torque specs
• Hand-start each nut to prevent cross-threading

Who is this kit for? If you own compatible Jeep models or aftermarket wheels that require 1/2"-20 threaded, 60° tapered-seat lug nuts and you want a corrosion-resistant, one-piece closed-end solution, this AUTOPTIM set is made for you. It suits drivers replacing damaged or corroded lug nuts, owners upgrading to a uniform black appearance, or anyone who prefers a rugged, low-maintenance nut design. For professional or DIY wheel service, pair these nuts with a quality torque wrench and follow vehicle torque recommendations to ensure safe, even wheel clamping.