FullerKreg (Pack of 20) M6 x 1.0 18-8 Stainless Steel DIN 6926 Hex Flange Nylon Insert Lock Nuts, Bright Finish

Great

I used these to secure some bolts to the angle brackets of motorized pedestal legs for a custom standing desk. They were what I was looking for in terms of being able to lock in place after being tightened. If I were grading these on that feature alone, these would be 5 stars. My only complaint was the finish on the nuts. They had a slightly tarnished appearance and scratched easier than I would have expected.

I recently moved house and somewhere in the process misplaced the hardware for my kitchen table. Rather than make yet another trip to the local hardware store (there's a lot of that with a new house), I just ordered these and let them come to me while I tackled other projects.The locking nut + washer combo meant fewer parts were needed than originally came with my table (separate nuts, locking washers, and regular washers). These went on easy enough (would've been easier with a deep socket instead of a wrench, but you work with what you've got). All 10 parts were in the package and nothing appeared to be damaged in shipping.

I bought these as part of a refurbishment of a garden bench. I wanted all stainless steel hardware to avoid issues with rust. These nuts were just right for my application, and the nylon insert will keep them from loosening up over time.

These are nice nuts although the height or m dimention shown is actually the k dimension ie the m for m5 is 4.7ish mm and the actual height is the k 7mm.

Performed as needed.

Perfect

Very high quality, perfect fit on a wrench, cut exactly right