Update. We have 100% confirmed with both Trail Gear and more importantly ARP (Automotive Racing Products) that these are indeed manufactured by them for Trail Gear. Same spec material as their black ones with the hex head and cad plating per TG's spec. We took a few (4) of the undamaged ones we we received back and were able to measure them (length) before and after we installed, torqued and re-installed on a wheel hub using an AISIN hub up at the old shop. They pulled tight and torqued to spec both times without any new elongation (I need to measure new ones at the shop). Obviously there are some that did in fact strip so we can't do anything to test those. ARP said they can/do have a rare thread issues with some bolts/studs in a large batches so it's entirely possible this was just crappy luck that Gleb ended up with them I plan to do a little write-up on the new vs used vs multiple re-torques on both the OEM Toyota and TG ARP studs, I need to do the stock ones next and use a drive flange to see if thickness of the flange has any impact.
There were many suspect that these were built by ARP (myself included after hearing some had stripped) and after chatting with Gleb today on his refund, I wanted to quickly chime in and at least update that ARP owns that they make em. Now, I'm almost wondering if the nuts could potentially be the issue. ARP doesn't provide those and TG didn't immediately have any specs on those. It would be dumb for those to damage the stud threads but... ?? I'll add OE nuts versus aftermarket nuts to my test. Fortunately this is/was an isolated issue.
There were many suspect that these were built by ARP (myself included after hearing some had stripped) and after chatting with Gleb today on his refund, I wanted to quickly chime in and at least update that ARP owns that they make em. Now, I'm almost wondering if the nuts could potentially be the issue. ARP doesn't provide those and TG didn't immediately have any specs on those. It would be dumb for those to damage the stud threads but... ?? I'll add OE nuts versus aftermarket nuts to my test. Fortunately this is/was an isolated issue.