420motorsport. Fasteners & Hardware – Bolts, Nuts, Studs and Washers

From lug bolts to quarter-turn fasteners

Small parts carry big loads. Wheels, suspension and engine components depend on bolts and nuts holding the correct preload under vibration and heat. The category covers, among other things, bolts, nuts and studs as well as washers, shims, clips and locking pins. Examples include lug bolts from Vossen, closed-end lug nuts from Weld, wheel stud and nut kits from All Balls Racing, U-bolts from ICON and rivet nuts from AMP Research. Quarter-turn fasteners are typically used for panels that need to be removed quickly.

How to choose the right hardware

The right part depends on several factors at once, not just the size:

Thread and pitch: Diameter and pitch must match, e.g. 14x1.25 on a lug bolt. Metric and imperial threads can look alike but do not fit together.

Length and engagement: A bolt that is too short gives too little thread engagement. A bolt that is too long can bottom out or hit other parts.

Seat type: Lug bolts and lug nuts are available with, for example, a conical seat or an attached washer, and the seat must match the wheel.

Strength and material: Load, temperature and corrosion determine which grade and finish make sense.

Wrench size and shape: Wrench size and open or closed-end nuts can affect clearance and tooling.

Installation, torque and compatibility

Always check the manufacturer's torque specification. Also check whether the thread should be dry or lubricated, as lubrication can change the achieved preload significantly. Re-torquing lug bolts and lug nuts after the first few kilometres is often recommended. Many kits are made for specific vehicles, e.g. wheel studs and nuts for Can-Am, Yamaha and Polaris or sprocket retainers for KTM and Kawasaki. So compare the part number and specifications with your vehicle. Where precise dimensions matter, shims or spacers can be used to adjust spacing and clearance.

Brands and maintenance

In addition to the brands mentioned, the category includes parts from ARP, S&S Cycle, Moroso, Hot Cams and Skyjacker, among others. Whether you can reuse bolts and nuts depends on the type. Self-locking nuts and stretch bolts are often intended for single use. Other parts can be reused if the thread is free of damage and rust. Replace parts with damaged threads, and clean the threaded holes before installation.

Frequently asked questions

Should I choose lug bolts or wheel studs with nuts?

It depends on what the hub is designed for. Some vehicles use bolts that thread directly into the hub, while others use studs with nuts. In any case, thread, length and seat type must match both hub and wheel.

What does the seat type on a lug nut mean?

The seat is the surface where the nut or bolt contacts the wheel, e.g. conical, spherical or flat. The wrong seat can result in too small a contact area, so the wheel can come loose. Check the wheel specification before buying.

What are quarter-turn fasteners used for?

Quarter-turn fasteners lock and release with a quarter turn. They are typically used for panels, covers and body parts that often need to be removed, e.g. for servicing or on track day cars. Choose the length according to the total material thickness.