Author Topic: Lug nuts for an 85 K30, conical seat angle questions. (Read 4841 times)

Bronze Knight · « **on:** October 11, 2020, 01:20:13 pm »

Hi everyone! While doing my rear breaks the other day I noticed that I was missing a lug nut, and I've been doing some research on sourcing a replacement ever since.

The lug nuts on the truck now must be an aftermarket set from somewhere but I can not find any information on them online. The hex size/socket that fits on them on the outside is 1 1/16'' (very close to 27mm) 9/16 -18 thread and they are about 1.89'' tall. I'm not sure what seat angle they are though. This thread says that duallys should have a 90 degree seat angle but there seems to be very few lug nuts with that angle out there. 99% seem to be either 60 or 45.
Here one is pictured next to a lug nut off my 02 Mercury Grand Marquis. They are downright huge, kinda sucks that I only need one, I'll probably just have to get a new set.

Mike81K10 · « **Reply #1 on:** October 11, 2020, 01:48:40 pm »

Aftermarket and you should be able to find them at NAPA, Autozone, Advance Auto Parts, Summit, Parts Geek, and other places. Could easily get them from after market wheel distributors as well. If they do not have them on hand you could order them. Attached a Pic of couple of places. The bottom picture is from Summit and appears to be less expensive than Parts Geek if you only need 4 or less.

JohnnyPopper · « **Reply #2 on:** October 11, 2020, 02:29:52 pm »

I think 45 is to the center of the lug, which would have both sides total 90.

Bronze Knight · « **Reply #3 on:** October 11, 2020, 03:41:48 pm »

Yep I’ve found lots of lug nuts that should fit. And truth be told i actually work at Advanced Auto Parts, not that that really means anything tho, but I am familiar with the system at least.
But I was hoping I could find some or find a retailer That carries that gigantic hex size of 1 1/16”

Here is a comparison 611-170 on top and 711-504 in the package.

But I still can’t tell if the seat angle is different or not. Going to buy a 611-170 and see how it fits. I’ll end up just getting a whole set at some point but if it fits I’ll use it in the mean time.

bd · « **Reply #4 on:** October 11, 2020, 04:07:02 pm »

Gorilla 21298 9/16" x 18 RH with 1-1/16" hex and 45° conical seat

Bronze Knight · « **Reply #5 on:** October 11, 2020, 04:15:24 pm »

That looks like exactly what I was looking for, and I looked on Summit too. Man do I feel like an idiot Thank you very much!

bd · « **Reply #6 on:** October 11, 2020, 07:45:04 pm »

Hope it works out for you.

Bronze Knight · « **Reply #7 on:** November 04, 2020, 11:08:13 am »

Forgot to post the exciting conclusion to this thread. It looks to me like they both fit, if could be that the plates the lug nuts press against (I don't know the name of them) are just augured out, but the Gorilla 21298 were an exact match for what was on the truck. So a 45 degree seat angle (total of 90 degree) seems right.