What size socket is a Ford F-150 lug nut?
The typical socket size for Ford F-150 lug nuts is 13/16 inch, used with standard 9/16-18 lug nuts. This combination covers the vast majority of recent F-150 models, though variations can occur with locking lug nuts or aftermarket wheels. Always verify for your exact vehicle.
Standard configuration you’re most likely to encounter
Most factory wheels on a Ford F-150 are secured with lug nuts that use a 9/16-inch stud and a conical (acorn) seat. The corresponding socket to remove or install these nuts is typically 13/16 inch across flats, which is about 21.6 mm. This sizing applies to a broad range of model years, from earlier generations through current production, but it can vary with wheel designs or aftermarket hardware.
- Thread size: 9/16"-18 UNC
- Nut style: conical/acorn seat for most factory wheels
- Socket size: 13/16" across flats (approximately 21.6 mm)
- Locking lug nuts: require the specific key, not the standard socket
- Variations: aftermarket wheels or different hub/wheel configurations can use other sizes
In practice, the 9/16-18 lug nut paired with a 13/16" socket is the standard you’ll encounter on the majority of Ford F-150s. If you’re uncertain, check the wheel specification plate or the owner’s manual for the exact size.
How to verify the size for your specific truck
When you’re not sure, a quick verification helps avoid damaging hardware. Use the following method to confirm the correct socket size for your particular F-150:
- Inspect the lug nuts or the wheel specification label for the exact size
- Measure across the flats of a lug nut with a caliper or ruler to identify the correct socket size
- Test-fit sockets starting with 13/16" and try smaller or larger sizes if it doesn’t fit snugly
- If your wheels use locking lug nuts, locate the included key or contact the dealer if it’s lost
After identifying the correct size, fit a torque wrench to re-tighten to the manufacturer’s specification and recheck after a short drive.
Locking lug nuts and aftermarket wheels
Some F-150s use locking lug nuts or aftermarket wheels that require different sizes. The locking nuts require the matching key, which is typically provided with the vehicle or wheel kit. For aftermarket setups, consult the wheel manufacturer’s specs to determine the correct lug nut size and socket.
Summary
The Ford F-150 commonly uses 9/16-18 lug nuts that are installed and removed with a 13/16" socket. Variations exist due to locking nuts or aftermarket wheels, so always verify for your specific year and wheel setup by consulting the owner’s manual or wheel manufacturer specifications. If in doubt, seek professional assistance to avoid damage.
