Left Hand 13/16" Hex Lug Nuts

[Rerun]

I changed wheels on the '51 2R5 truck to a wider GM 15" rim. This required changing to a 13/16" hex lug nut. The right side was no problem, but the left (LH thread) seemed to be unavailable, I was about ready to change the studs to RH when I finally found the LH nuts. I thought that I would pass this along to anyone with a similar issue.

https://walcks4wd.com/nut-hub-bolt-lh-thread-1316.html

[jpepper]

That should be a somewhat common nut as it was used on Pontiacs and Oldsmobiles into the 60's

[Rerun]

That should be a somewhat common nut as it was used on Pontiacs and Oldsmobiles into the 60's

I found the LH 3/4" nuts to be readily available, but not the 13/16". They are also very reasonably priced at this site, for us CASOs.

[StudeRich]

NAPA has them in 13/16" LH & RH For Chrysler and Ford Products.

[Studebakercenteroforegon]

Dorman 611-031...1/2”-20L Thread, 13/16” Hex.

[skyway]

Anybody's favorite parts shop still have ALL those fabulous orange Dorman drawers?

[Flashback]

Most of the time I have to settle for the orange dorman boxes, cause I have to order some smalls from Summit.

[WinM1895]

NAPA has them in 13/16" LH & RH For Chrysler and Ford Products.

Rich, when the OP first asked, I looked in the Ford parts catalogs, couldn't find anything that matched the criteria.

This is what I found:

L/H lug nuts for the left rear wheel of 1967/79 F350: 9/16" -18 x 21/32" long.

F350 right/left front and right rear use R/H lug nuts.

[StudeRich]

The Stude. Studs and Nuts are 1/2 X20 and the Nuts have a 13/16" Wrench Size.

But Dorman/NAPA Nuts are very generic for GM, MoPar and I don't know why they would not be Ford, they fit and are required on the Ford Car Wheels.

[Rerun]

The Stude. Studs and Nuts are 1/2 X20 and the Nuts have a 13/16" Wrench Size.

No, the original nuts are 1/2-20 with a 3/4" hex. A 13/16" hex works better with the GM wheels. I thought that I would merely pass along the source that I found, as they have the nuts at a very reasonable price, and there might be other members looking for these.

[Blue 15G]

Anybody's favorite parts shop still have ALL those fabulous orange Dorman drawers?

Mine does! In an independent auto parts store still in business that opened in 1924.

[skyway]

You are a lucky man!

[tsenecal]

Great online source! Thanks for posting. We live out in the sticks so we order things online a lot.

[StudeRich]

No, the original nuts are 1/2-20 with a 3/4" hex. A 13/16" hex works better with the GM wheels./Cut/

Of course they are, I thought we were talking about the REPLACEMENT Nuts for our Studes.

Sorry, but I was answering Bill in Post #8, he needed to know that the reason he can't find these Nuts in his Ford Truck Catalogs is Studebaker used 1/2" X20 Studs & Nuts like Ford CARS, not 9/16 X18.

[WinM1895]

Of course they are, I thought we were talking about the REPLACEMENT Nuts for our Studes.

Sorry, but I was answering Bill in Post #8, he needed to know that the reason he can't find these Nuts in his Ford Truck Catalogs is Studebaker used 1/2" X20 Studs & Nuts like Ford CARS, not 9/16 X18.

But, F100/250's used the same 1/2 -20 lug nuts as the cars (E8AZ-1012-A replaced B-1012). B-1012 dates back to 1932, E8AZ-1012-A is the 1988 replacement part number.

But cars never had a left hand lug nut, only F350 had these and only on the left rear wheel. F350's used larger lug nuts.