The Ford F-350 employs a 21mm socket wrench to secure the lug nuts that should be tightened to 165 lb/ft. Of torque. The thread measures M14-2.0 and the length of the fastener is 24mm. The "hex" of a nut refers to the diameter of the top of the lug nut and also the socket size needed to secure it. Thread size refers to the diameter of the nut's shaft and the space in between the shaft's grooves or "threads". The lug nut pattern of the F-350 iS8 X6.5 inches or 165mm. This means the wheel is secured with 6 bolts or nuts that form a circle with a diameter of 6.5 inches or 165mm. MM stands for millimeters and most wheel bolts are measured and ordered using the metric system.
Janice L.
April 10, 2020
The ford f-350 lug nut socket size is hex 21mm (7/8 inches), height 24mm (.94 Inches), and a thread size of either 14x2.0 Or 14x1.5.
Actually the socket size is 13/16th inches or 21 mm
sam
January 8, 2021
The stock nuts swell because they are bad quality they are not made of solid meatalsolid. All mine need repacking
Bob
October 25, 2020
I just tried a 13/16 and a 7/8. I'm trying to figure out what to order. Last tire change (on I-95!) with just a factory lug wrench was a nightmare. The 13/16 wouldn't go on, and the 7/8 was just a hair loose. I'm thinking maybe a 22mm. Going to stop by a buddy of mine's shop tomorrow and try one of his out for size.
Les
November 17, 2023
23323
TC
June 23, 2023
I just bought a impact wrench just for changinga tire on my 2012 F350 dually and 21mm fits perfectly
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