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What size are transit wheel nuts?

The typical answer is that most modern Ford Transit vans use metric M14 x 1.5 lug nuts and a 21–22 mm wrench size, but the exact size can vary by model year and wheel configuration.


The Transit line has evolved across generations and markets, meaning wheel hardware isn’t universal. This article explains how to identify the correct size for your specific vehicle, what sizes are commonly seen, and how to verify them before maintenance or replacements.


Common sizes you’ll encounter


What follows are the sizes you’re most likely to encounter on Transits in service today, along with notes on wheel seat and wrench size. Use this as a reference, but verify against your exact vehicle specifications.



  • Thread size: M14 x 1.5 is the standard for most modern Ford Transits; some older or niche configurations may use M12 x 1.5 or M16 x 1.5.

  • Nut seat: Typically a 60-degree conical (tapered) seat, which matches common European wheel designs; some aftermarket wheels may require a different seat type.

  • Across-flats (wrench size): commonly 21 mm or 22 mm; a few variants may use 19 mm or 23 mm depending on the nut design.


Sizes listed here cover the majority of Transit models, but there are exceptions based on year, trim, and whether the van wears aftermarket wheels.


How to confirm the exact size on your vehicle


To identify the precise lug nut size for your Transit, follow these steps:



  1. Consult the vehicle’s owner’s manual or Ford service documentation for wheel nut specifications tied to your VIN.

  2. Inspect a lug nut on your wheel for any stamped size information (some nuts have the thread size etched on the nut face or flange).

  3. Measure the threaded portion with calipers to determine diameter (roughly 12 mm, 14 mm, or 16 mm) and count or estimate the thread pitch (most transit nuts are 1.5 mm).

  4. Check the wheel type (steel vs alloy) and seat design to confirm whether a cone/60-degree or flat-seat nut is required.

  5. If in doubt, contact a Ford dealer or a qualified mechanic with your VIN to fetch exact specs for your van’s production year and wheel option.


Once you’ve verified the exact size, use lug nuts that match the thread pitch, seat type, and hex size, and torque them to the manufacturer’s specification in a star pattern to ensure even clamping.


Summary


Transit wheel nut sizes are not universal across all years and variants. While M14 x 1.5 with a 21–22 mm hex is typical for many modern Ford Transits, some models may use different thread sizes or seat types. Always verify using the vehicle manual, VIN-based specifications, or dealer resources, and follow proper torque procedures when replacing lug nuts to keep wheels secure and roadworthy.

Are Ford lug nuts metric or sae?


Almost all Ford lug nuts are metric. The most common metric thread sizes of Ford wheel nuts are M14x1. 5mm and M12x1.



What size socket for Ford wheel nuts?


The most common socket size for Ford lug nuts is 13/16" or 21mm, especially for models like the F-150 and Bronco. However, sizes can vary by model year and specific vehicle, with some models like the Bronco Sport using a 19mm (or 3/4") socket. It is best to confirm the exact size for your vehicle, as some older or different models might use a different size. 

  • 13/16" or 21mm: This is the most common size for many modern Ford vehicles, including the F-150 and Bronco. Some sources suggest 13/16" may be a slightly tighter fit than 21mm, which can help prevent rounding the lug nuts. 
  • 19mm (or 3/4"): This size is used on certain models, such as the Bronco Sport. 
  • Verification: It's important to check your vehicle's manual or confirm the size before buying tools, especially since some models use a different size or have swollen lug nuts that may require a special socket. 
  • Swollen lug nuts: If you have a Ford with swollen lug nuts, a standard socket may not fit. In these cases, a special "flip" socket, which has a slightly larger size, can be used to remove them. 



What size are the lug nuts on a transit?


With a thread size of M14x1. 5, the installation process is quick and straightforward. Upgrade Your Wheels with Premium Steel Lug Nuts!



What size are Ford wheel nuts?


Most modern Ford vehicles use M14x1.5 lug nuts, while some older models and certain trucks use M12x1.25 or M14x2.0. The most common size for a F-150 from around 2015 onwards is M14x1.5, and for F-250s it is M14x1.5. For older F-150s (2004-2014), the size is M14x2.0, and many other models like the Escape, Focus, and Fusion use M12x1.25. Always check your owner's manual for the specific size for your vehicle. 

Lug Nut Size Common Vehicles
M14x1.5 Most 2015+ F-150s, F-250s, Explorers, and Mavericks
M14x2.0 2004-2014 F-150s, 2003-2014 Expeditions, 2003-2014 Navigators
M12x1.25 2001-2022 Escape, 2012-2018 Focus, 2006-2020 Fusion, 2011-2022 Fiesta, 2019-2026 Ranger (including Raptor), 2021-2026 Bronco (non-Raptor)
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Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.