dynofit ATV Lug Nuts M12x1.5 16pc — 6-Spline Locking, Cold-Forged Alloy Steel (60° Conical)

These dynofit 12x1.5 ATV lug nuts are a 16-piece, one-piece alloy steel set with a 6-spline locking design and included key, made to fit wheels that require M12x1.5 threads and a 60° conical seat.

Designed for side-by-sides, UTVs and ATVs from makers like Polaris and Honda, this aftermarket kit supplies 16 lug nuts plus a matching socket key, packaged with padding for protection. The fasteners use a cold-forged alloy steel body with electrophoretic finish for improved corrosion resistance, and they are engineered to work with 4-lug wheel applications that accept a 60° tapered seat. Before ordering, confirm your vehicle’s lug-seat profile and thread pitch to ensure compatibility.

Will these lug nuts fit my Polaris, Honda or similar ATV/UTV?

They fit wheels that require M12x1.5 threads and a 60° conical seating surface—common on many Polaris Ranger, RZR, General models, and Honda Pioneer applications. Compatibility depends on both thread pitch and seat angle, so visually compare your factory nut or consult your owner’s manual.

• M12x1.5 thread pitch (metric)
• 60° conical (tapered) seating surface
• Intended for 4-lug wheel setups
• Check original nut seat type before purchase

How secure and tamper-resistant are these locking lug nuts?

The set uses a 6-spline locking pattern that prevents removal without the provided key or an authorised tool, adding theft deterrence for aftermarket wheels. The one-piece construction reduces the risk of splitting or loosening compared with multi-piece designs when installed correctly with hand tools.

• 6-spline locking pattern for added security
• One-piece forged design for strength
• Included socket key for controlled installation and removal
• Not intended for impact-wrench use — hand wrench recommended

What are the dimensions and installation considerations?

Each nut measures about 1.4 inches tall with an outer diameter near 0.78 inches and fits either 3/4" (19mm) or 13/16" (21mm) hex sockets. The kit comes with 16 nuts and one socket key, stored in a padded box to prevent damage during shipping. Installation should be done with a hand wrench; impact tools are discouraged to avoid stripping or over-torquing.

• Height: approx. 1.4" per nut
• Outer diameter: ~0.78"
• Socket sizes: 3/4" (19mm) and 13/16" (21mm)
• Pack includes 16 nuts + 1 locking socket key

How durable is the finish and metal construction?

Cold-forged alloy steel provides high strength and consistent thread quality, while electrophoretic painting adds a protective layer against rust and corrosion. The parts undergo an extended salt-spray test to help ensure longer service life compared to shorter-tested alternatives.

• Cold-forged alloy steel for toughness
• Electrophoretic coating resists corrosion and peeling
• Extended salt-spray tested for improved longevity
• Clear, well-formed threads for reliable fitment

Who is this for? This dynofit lug nut kit is intended for ATV/UTV owners who need metric M12x1.5 fasteners with a 60° conical seat—particularly those running Polaris RZR, Ranger, General or Honda Pioneer vehicles with 4-lug wheels. It’s a practical choice for riders who want a secure, corrosion-resistant aftermarket option with an included key and protective packaging. If you’re unsure about fitment, inspect your original lug nut for thread pitch and seat style or contact a dealer for confirmation before installing.