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How to Identify the correct lug nut and wheel lock for your vehicle

 There are five main components to identify the correct lug nut or wheel lock:

  • Thread Size
  • Thread Pitch
  • Seat Type
  • Length/Dimensions
  • Finish/Color


The wheel studs are the threaded bolts (or studs) that protrude through the holes in your wheels onto which you would thread your lug nuts. Most vehicles have either 4 or 5 wheel studs per wheel, however, some trucks, vans or SUV's can have up to 8 per wheel.

Thread Size

You can easily identify your thread size and pitch with a simple thread pitch gauge available at any hardware store, or you can simply take one of your lug nuts to your local hardware store and spin it onto the bolts they have on hand. The thread size or thread diameter is the measurement taken across the outside diameter of your wheel stud threads measured in either standard (7/16", 1/2", etc.) or metric (12mm, 14mm, etc.) dimensions. The most common thread sizes are 10mm, 12mm, 14mm, 7/16", 1/2", 9/16", 5/8". You can find most factory stud sizes in your vehicle owner's manual or you can use online guides (i.e.: ).

Thread Pitch

The thread pitch is the measurement of either threads per inch for non-metric studs or the distance in millimeters between the threads for metric applications. This tool will help identify the proper thread pitch that was on the vehicle from the factory. If the vehicle has been modified, you will need to verify the thread pitch. 

Thread pitch and size

Seat Type

The seat type refers to the area where the lug nut actually makes contact with the wheel surface. The most common types are either an acorn/tapered seat, a mag seat (which features a flat seating surface with a separate seating washer) or a ball seat

Seat type


It is critical that you confirm the dimensions of your lug nut or wheel lock to ensure a proper fit for both safety and appearance. This includes the outside diameter, overall length and for Mag style nuts/locks you must also determine the proper shank diameter and shank depth.

Dimensions of your lug nut or wheel lock


Lug nuts and locks are available in a wide variety of finishes and colors including chrome plated, black chrome, stainless steel, zinc, yellow chromate, silver, red, blue and more. Once you have identified these fitment components it is just a matter of choosing your preferred style of nut or lock. 

Lug Sizes (ISO standard and UN-series types)

  • M12 x 1.25
  • M12 x 1.5
  • M12 x 1.75
  • M14 x 1.25
  • M14 x 1.5
  • M14 x 2.0
  • M16 x 1.5
  • M16 x 2.0
  • 3/8" - 24 UNF
  • 7/16" - 20 UNF
  • 1/2" - 20 UNF
  • 9/16" - 18 UNF
How To Remove Wheel Locks Without a Key 

How To Remove Wheel Locks Without a Key. DONOT use this information for illegal purposes, it is intended to HELP you if you happen to loose your wheel lock key.

All you need to know about choosing lug nuts for your vehicle 

Lug nuts are a quick & inexpensive way to add an extra style to your wheels that you might be looking for. We talk all you need to know about choosing lug nuts for your vehicle!

METRIC vs. INCH-based (UTS) threads 

Metric and inch-based threads are NEVER interchangeable. How are these two screw threads different? What`s TPI mean? What options are there to sort the 2 kinds of hardware out if mixed up? What do the numbers mean in thread specifications like M10x1.5 or UTS 3/8"-16NC? Watch and learn.

Types of Lug Nuts 

Finding the right wheel bolt pattern is easy and Mike walks you through the basics to find the right custom wheel for your vehicle. Listen closely as Mike describes the types of lug nuts available and helps you find the right ones for your project.