How to Determine Lug Nut Size – Learn in 5 Easy Steps

Last Updated on October 30, 2020

The thing that moves your vehicle on the road is the wheels. To secure the wheels with the vehicle, it is essential to use the right lug nut. For almost any metal constructed wheel, it is crucial to choose the right lug nut and the accurate size of the nut. It secures the wheel to threaded wheel studs. So, when the vehicle is moving fast, the wheels remain safe and keep the vehicle safe.

To have the optimum performance from the wheels, you need to know how to determine lug nut size. As this small tool comes in different types, one could easily get confused about which one to pick and which size is best.

If you want to know how to find lug nut size, you need to consider 5 crucial points. Here are the things that directly related to lug nut size selection –

1. Thread size

The first thing you must check is the thread size of the wheel. You could do it easily by identifying the size of the thread. For this, find out a good thread pitch gauge from any hardware store. Then measure the thread with this small tool. This is the measurement that you need to take across the outside diameter of the wheel stud thread. It could be from 10mm to 5/8". However, the measurement would vary based on the wheel size and wheel stud.

2. Thread pitch

Once you know the thread size, it is time to check the thread pitch. Thread pitch is the measurement of threads per inch for wheels with non-metric studs. Also, it could be the distance between the threads for wheels that are used in metric applications. In that case, the measurement will be in millimeters. This allows you to identify the proper size of the thread pitch that was originally used in the factory. So, during the replacement, there won't be any issues.

3. Seat Type

This is the most crucial point of this how to measure the lug nut size guide. Seat type will vary for wheels of the vehicles. The most common seat types are ball seat, flat seat, acorn or tapered cone seat, and E/T ultra-tapered mag seat. This thing is related to the area where the lug nut contacts the wheels' surface. In most cases, the wheels of the vehicle would be in an acorn/tapered seat or a ball seat. For instance, in the Honda and Acura models, the ball seat is common. You will have to identify the seat type.

lug nut seat type

4. Dimensions

When you have got everything right, it is time to find which dimension matches the wheels. To apply the wrench for tightening the lug nuts and using impact socket sets, the accuracy of the dimension is mandatory. Look for both exterior and interior dimensions and the total length of the nuts. Besides, be aware of the shank depth and shank dimeter and pick the accurate one.

5. Finishing

Finally, the thing that matters is the finishing of the lug nut. Check the inside and exterior so that when fitting it to the wheel, no issues happen with the smoothness. For example, a lug nut with a little bit of prolonged metal inside won't fit the wheels. You may also consider the color of the nuts.

Wrapping Up

So, now it is clear how to determine lug nut size. But besides picking the right size, be careful about the right type of the lug nut type. Each type of wheel may require something different. If you couldn't identify which type best suits for the wheels, check the vehicle company's official website. You may also take some expert opinion. Another good thing is, you could easily find a lug nut sizing chart online. For security, we suggest checking the chart too.

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