What is the bolt size on an F250 Super Duty?

There's no single answer to what the bolt size is on an F250 Super Duty. F250s use many different sizes of bolts throughout the vehicle, depending on the application (engine, suspension, body, etc.). You'll need to specify *which* bolt you're asking about.

To find the correct bolt size, you need to:

* Identify the part: What part of the truck are you working on? (e.g., wheel lug nuts, engine mount, etc.)

* Consult a repair manual: A factory service manual specific to your year and model F250 will list all the bolt sizes for every component. These manuals are usually available online or from auto parts stores.

* Measure the bolt: If you have the bolt in hand, you can measure its diameter and thread pitch. A caliper and a thread pitch gauge will help.

Without more information, it's impossible to tell you the bolt size.