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What You Need to Know About Lug Nuts

July 26, 2021

 

Once you've picked out your new, aftermarket wheel and tire package, you'll probably start to look at some aftermarket lug nuts so you can actually bolt up your new package on your truck or car. 

Remember, nearly all aftermarket wheels require aftermarket lug nuts because the stock ones just don't fit.

The more you know about lug nuts, the more secure you and your wheels will be.

 

CHECK OUT OUR AFTERMARKET LUG NUTS

 

Complete Guide to Aftermarket Lug Nuts: 

- Important Definitions: Lug Nut Size vs. Seat

- 5 Types of Lugs Nuts

  - Conical Lug Nuts

  - Spherical Lug Nuts

  - Mag Seat Lug Nuts

  - Flat Seat Lug nuts

  - Extended Thread Lug Nut

 

 

 

Lug Nut Size vs. Seat

There are two terms you need to understand when it comes to looking for the right lug nuts for your vehicle:

- Size

- Seat

 

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Wheel shot of a 2016 FORD F-150 with ARKON OFF-ROAD Caesar wheels, Atturo Trail Blade Mts, and ReadyLIFT Suspension Lift 7"

 

Size refers to the right lug nut measurement and takes into account thread size and the thread pitch. Simply put, thread size refers to the diameter of the stud the lug that will be fastened to.

Seat refers to the area where the lug nut actually makes contact with the wheel surface.

 

2016 FORD F-150 with Mayhem Monstir 8101 wheels, Nitto Ridge Grappler tires, and Rough Country Suspension Lift 6"

 

There are three types of seating styles.

- The Conical Seat: Displays a beveled 60-degree angled surface and is the most popular type for aftermarket wheels.

- The Mag Seat: This is a completely flat surface used with a separate washer.

- The Ball Seat: This is an inverted bowl-shaped seat.

 

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side angle of a 2017 GMC SIERRA 1500 TIS 551bm, Venom Power Terra Hunter X/T, and a 3-inch level Leveling Kit

 

 

5 Types of Lugs Nuts

So, now that we know about size and seat, let's look at five types of lug nuts that are on the market today.

 

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Conical Lug Nuts

The conical lug nut, otherwise known as the acorn lug, is the most popular lug nut in the aftermarket wheel industry.

Conical lugs fit into cone seated lug holes and are incredibly easy to work with since that 60-degree slope actually self-centers the lug when tightened down.

 

SD Wheel Spiked, colorful, Conical lug nuts

 

Conical lugs like most of the other lug types can come in closed, open, long, and short styles depending on the cap type.

Be sure you know the cap type when ordering lugs so you don't get ones that prevent the cap from fitting properly.

 

READ: LIFT VS. LEVEL KITS

 

Side shot of a 2016 FORD F-150 with ARKON OFF-ROAD Caesar wheels, Atturo Trail Blade Mts, and ReadyLIFT Suspension Lift 7"

 

 

Spherical Lug Nuts

Spherical lug nuts, also known as ball seat lugs,  naturally fit into ball seat lug holes because they match the ball-shaped hole perfectly.

This style of a ball seat lug will look similar to a conical lug, so make sure to double-check your lugs since many European vehicles use the ball seat style—these are very easy to install like the conical.

 

2017 GMC SIERRA 1500 TIS 551bm, Venom Power Terra Hunter X/T, and a 3-inch level Leveling Kit

 

 

Mag Seat Lug Nuts

Mag seat lug nuts have a handy extended thread design as well as a flat washer that's used to set them flush if there is a flat surface around the lug hole.

These were popular when aluminum wheels first came out years ago, but now they're pretty rare.

 

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Chevy silverado pulling a trail with aftermarket wheels and tires

 

 

Flat Seat Lug Nuts

Similar to the mag seat is the flat seat lug which also was made to bond to a flat surface.

The difference is that flat seat lugs have the washer built-in and do not have an extended thread design.

They are also convenient since the washer is attached, but they're not as easy to torque down compared to mag lugs. With its extended thread, you can find these on many semi-truck wheels and some industrial settings. 

 

2015 TOYOTA TUNDRA Fuel Cleaver D574 22x10 -18 Toyo Tires Open Country R/t 35"x12.5" ReadyLIFT Suspension Lift 4"

 

 

Extended Thread Lug Nuts

Speaking of extended thread our last plug for this video is the extended thread lug nut or ET lug which has its own category.

The extended thread lug nut has the conical seat with an extra shank to get more thread engagement.

 

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2021 RAM PROMASTER 2500 with Method Mr305 wheels, BFGoodrich All Terrain T/a Ko2 tires, and Stock Suspension

 

These lugs are for situations that call for more thread engagement on studs that may be longer than the thread of a normal one.

With the ET lugs, the extra shank can go deeper into the lug hole and in some cases secure the wheel better.

 

2016 FORD F-150 with ARKON OFF-ROAD Caesar wheels, Atturo Trail Blade Mts, and ReadyLIFT Suspension Lift 7"

 

ET lugs are also easier to thread because you can grip them better and are preferred by many for that feature.

 

READ: IS IT SAFE TO LIFT YOUR TRUCK?

 

2017 TOYOTA 4RUNNER Icon Alloys Rebound 17x8 0 Mickey Thompson Atz P3 285/70 Old Man Emu Suspension Lift 3.5"

 

Final Thoughts

We hope this guide helped clear the dust when it comes to getting new lug nuts for your aftermarket wheel and tire setup.

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