Mardarth 7/16-20 Lug Nuts 24PCS Chrome 60° Conical Seat — 3/4" Hex, 1.38" Length

Premium set of 24 chrome 7/16-20 closed-end lug nuts with a 60° conical seat designed to replace factory lug nuts on many Chevy and GMC trucks and cars from the 1970s–1980s.

These Mardarth lug nuts are a full replacement kit offering consistent thread fit, a closed-end profile to keep out debris, and corrosion resistance verified by salt-spray testing. Built as one-piece solid nuts rather than two-piece capped designs, they reduce the chance of trapped moisture and simplify maintenance. The set includes 24 identical nuts sized for 7/16-20 studs, 3/4" (19mm) hex drive, and 1.38" (35mm) overall length—ready for direct swap on many Chevy and GMC models listed below.

Will these lug nuts fit my Chevy or GMC vehicle?

Check your wheel stud thread and seat type first: these nuts are 7/16-20 with a 60° conical seat, intended for specific classic Chevy and GMC models. They are compatible with many Blazer, Camaro, El Camino, K-series pickups, Suburbans and other listed models from the 1970s and 1980s. If your factory nuts used a conical (60°) seat and 7/16-20 threads, these will generally fit.

• Thread: 7/16-20 (verify against your studs)
• Seat: 60° conical (match wheel seat geometry)
• Hex drive: 3/4" (19mm) socket required
• Common fitment: Chevy Blazer, K10/K5, Camaro, El Camino, Monte Carlo; GMC Jimmy, K1500, V1500

How durable are these lug nuts in real-world use?

Mardarth lug nuts are manufactured as a one-piece solid design to resist the moisture intrusion and rust issues common to two-piece or capped types. The chrome finish offers aesthetic shine while the product has been tested with 72 hours of salt-spray exposure for improved corrosion resistance. Closed-end construction blocks contaminants from entering the nut body, extending service life.

• One-piece solid construction reduces failure points
• Chrome finish for rust resistance and appearance
• 72-hour salt-spray tested for corrosion durability
• Closed-end to prevent dirt and moisture intrusion

What tools and torque should I use to install them?

Use a 3/4" (19mm) socket or wrench to tighten these lug nuts. Always follow your vehicle manufacturer's recommended torque specifications and use a calibrated torque wrench for final tightening to ensure safe wheel clamping and to avoid over-torquing. Hand-start each nut to ensure threads engage properly before applying final torque.

• Socket size: 3/4" (19mm)
• Use a torque wrench for final tightening
• Hand-thread nuts before power tightening
• Refer to vehicle manual for specific torque values

Who is this for: This 24-piece Mardarth lug nut kit is aimed at owners restoring or maintaining classic Chevy and GMC trucks and cars that require 7/16-20 conical-seat lug nuts. It suits mechanics, restorers, and DIY enthusiasts who need a full set for four wheels plus spares, want closed-end protection, and prefer a one-piece chrome replacement that resists corrosion. Ideal for vehicles listed in the fitment details and any application where the stud thread, seat angle, and hex size match.

• Package contents: 24 lug nuts
• Specifications recap: Thread 7/16-20, Hex 3/4" (19mm), Length 1.38" (35mm), Width 0.87" (22mm)
• Color: chrome silver; Type: closed-end; Seat: 60° conical
• Warranty: 1 year; contact after-sales for support