MIKKUPPA M14x1.5 Spline Lug Nuts for Chevy GMC Trucks — Closed-End, Cold-Forged Steel, Corrosion-Resistant

If you’re replacing stripped, rusty or mismatched lug nuts on a full-size truck, these M14x1.5 spline nuts provide a durable, ready-to-install alternative. Built from cold-forged, heat-treated steel with a thick paint finish applied using infrared drying, they resist corrosion and maintain a factory-fresh appearance after extended salt-spray exposure. The set includes a 7-spline socket key and two hex keys for straightforward installation, making them suitable for aftermarket wheels and OE-style applications.

Will these spline nuts fit my Chevy, GMC or other heavy-duty truck?

These lug nuts were specified for many GM and selected Ford/Ram models that use an M14x1.5 thread pitch. Confirm your vehicle’s factory thread pitch and wheel seat before ordering; compatibility lists cover common Chevy and GMC pickups and vans as well as several Ford Super Duty and Ram 2500/3500 models.

• Thread pitch: M14 x 1.5
• Hex: 3/4" (19 mm)
• Overall height: 2" (50 mm); width: 0.9" (23 mm)
• Closed-end design with included 7-spline key and 13/16" & 7/8" hex adapters

How durable and corrosion-resistant are these lug nuts?

MIKKUPPA lug nuts undergo a 72-hour salt spray test and use infrared-dried paint integrated into the metal surface for improved adhesion. The one-piece construction eliminates two-piece seam failures and the cold-forged, heat-treated steel core increases strip resistance and mechanical strength.

• 72-hour salt spray tested finish for better rust resistance
• Infrared curing bonds paint to metal to reduce flaking
• Cold-forged, heat-treated steel resists stripping and deformation
• One-piece design reduces failure points versus two-piece nuts

What tools and installation details are included or required?

The package contains a 7-spline socket key plus two hex options (13/16" and 7/8") to fit common installer tools. The closed-end profile protects wheel studs and gives a finished look; be sure to torqu e lug nuts to your vehicle manufacturer’s specifications and verify clearance with aftermarket wheels.

• Included: 7-spline socket key (21 mm) and 13/16" (21 mm) & 7/8" (22 mm) hex adapters
• Installation: hand-start, then torque to factory torque specs
• Check wheel offset and seat type for proper fit with aftermarket rims
• Closed end protects exposed stud threads from corrosion and damage

Who is this for: These MIKKUPPA M14x1.5 spline nuts are aimed at truck owners, mechanics and aftermarket wheel installers who need rugged, long-lasting lug nuts for full-size Chevy and GMC pickups and vans, select Ford Super Duty and Ram 2500/3500 models. They suit anyone replacing rusty or damaged nuts, upgrading to a unified wheel look, or fitting aftermarket wheels that accept closed-end spline nuts. If your vehicle uses M14x1.5 threads and you want a one-piece, corrosion-resistant option with included installation keys, these lug nuts are a practical, cost-effective choice.