Lug nuts
These are 1/2"-20 with a 13/16" hex,
Last edited by TxKnuckleBuster; Oct 12, 2025 at 10:17 AM.
Something I found interesting, and you may as well (though I doubt anyone else will) ... I noticed that same HK stamp on a Timken wheel bearing. Not sure what to make of it, but maybe I'll find something.
As I make repairs to the old truck, I'm trying to compile a list of the original manufacturers of the parts, when I can. If I ever make any significant progress, I'll post it here to aid any serious restorers.
On an unrelated subject, I found an old Rotunda/Autolite Parts Catalog from 1964 at a swap meet. It's in good shape and I paid a whole buck for it! The gods were smiling on me that day. I may try to digitize it and add it to the Internet Archive. It's a good place to look for old books, etc. I see the book on eBay for well over $200, which I find despicable.
I don't remember Timken putting a plant code on their bearings, but that's not to say that they didn't. I don't have a better answer. They do use what is usually a 2-letter code for the bearing type, and then there's that funky little "italicized y" (that's what I call it, anyhow) for which I've yet to find a meaning.
Yep, I'm a little enthusiastic about this stuff, lol. I guess most just call me a nut, but I love the detective work involved with finding answers, mostly to questions that nobody asked. I'm into details. Looking for details in parts keeps me busy but when I'm done, replacement or repair is usually un-noticeable, which is my goal. An odd goal to some, but an enjoyable one for me.
I personally love underhood restoration the most but will work on just about anything. I'm currently working on a '56 IH pickup, a '61 F250 pickup, a '68 Cadillac, and a '56 tractor. I'd like to see the Ford painted when I'm done, but I doubt my son will do that. He likes the old, used look more than the new. I guess maybe he's a little different, too.
NEW TIMKEN 2788 TAPERED ROLLER BEARING SINGLE CONE 2-1/2" BORE *READ* | eBay
This one has an 8J code on it.
https://www.ebay.com/itm/197218460918
And another with an NL code on it.
Those are said to be a plant code (manufacturing origin) or batch identifier. If you find out otherwise it would be interesting to hear about your discovery. Might be able to find someone who works or worked for Timken that can tell you more.
Here's just a race and like you otherwise mentioned some of the bearing and races have a two-digit prefix before the numbers. LM603011 and a two digit code of VS. The LM stands for Light-duty Matched.
NEW 1985 - 1996 Ford F150 F250 OEM Front Outer Race Wheel Bearing B7A-4222-A NOS | eBay
Last edited by TA455HO; Oct 18, 2025 at 01:18 PM.
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I wasn't referring to the 2-letter prefix codes (LM, etc), but to the 2-digit codes that are shown on these 3 bearings, along with an explanation of each code. I do not know how consistent Timken is with their marks. Maybe in some countries they stamp a plant ID code while others don't, maybe some plants stamp bearing type codes while others don't, maybe others stamp date codes while others don't. And to make things worse, maybe some codes resemble other codes. There are so many variations on the Internet that I'm not sure anyone could ever identify the possible different combinations, and lots of those are counterfeits.
I didn't mean to take off in this direction, at least not to this extent. I'm just trying to match and find bearings, and studs, and lug nuts to the "originals" on a 64-year-old truck, quite a feat in itself.
CC = Spherical roller bearing of C design but with enhanced roller guidance
TD = CONE TAPERED BORE DOUBLE CONE
TP = CONE TAPERED BORE CONE WITH PULLER GROOVE
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