[Dominik]

Good morning!

I am glad to see some experienced guys helping out with the sleeve nut - again.
Since I bought my first set from Trigo in 2000 I (and many others) battled with the sleeve nuts.

They had the wrong taper, thread not parallel to outside causing them to sit skew, were too soft, too short, too long, you named it...

Initially, because they were sleeve nuts for aftermarket 5-lug rims, mounted visible where it didn't matter if they sat a bit skew.

Do not try to bend them straight to mount the wheel, they bend back when you drive and you won't get the wheel off. Also, you don't want to bend a critical (wheel) stud.

The "new" version cracking or splitting is not new either. (The hex is splitting when inserting the "Allen" key).

In my eyes, there is only one solution:

Get them made from a decent material. Made, as in:
On a lathe/mill. With a hex head to accept a 5/8" spanner or socket (like the ones seen on the CAV GT40).

I wish someone in the US, or here for Vintage Wheels (Wheelcraft) had the backbone to invest in a little extra cost to CNC manufacture those nuts. It's been 8+ years of hassle...

We are talking thousands of nuts to replace the dangerous sh*** ones at very little cost.

David:
Poland might be a good place to manufacture them ;-)

Dom