Nord-Lock Wedge Locking Washers - Steel (Delta Protekt) Washer with Zinc Flake Coating, Vibration Resistant Safety Washers for M10 Bolts - 20 Pairs

You’re the kind of person who reads reviews about locking washers, and honestly, I respect that level of dedication to hardware. It's a small yet mighty group of us here at the bottom of these Amazon review pages for fastener-related accessories.So, yeah. These are washers and they do exactly what they promise: they lock. Tightly. Their wedge design and zinc flake coating mean they’re both functional and durable, even in demanding environments.**Pros:**- They’re precisely what they claim to be: locking washers that lock.- Reliable, durable design with zinc flake coating to combat corrosion.- Ideal for high-vibration environments where standard washers might fail.**Cons:**- On the pricier side, especially compared to generic washers.If you’re serious about keeping bolts in place and willing to pay a little extra for quality, the Nord-Lock Wedge Locking Washers are worth it.

Purchased these to enable me to ensure that my C7 Z06 J56 Brembo Caliper bolts would work loose.GM and other manufacturers spec a ridiculously high torque spec that renders the bolt "Single Time" use as it's a TTY torque, Torque to Yield. I think the factory spec was like a 160 ft. lbs.With the Nord-Lock I would torque the caliper mount bolts to like 140 -145 ft/lbs, and then feel safe re-using bolts. Taking the car to track days meant I had the calipers off at least every spring, and some seasons once during the summer. Insane to keep purchasing new Caliper mounting bolts every time.Great product, and I was able to re-use them for at least 3 cycles before the locking ridges started showing some signs of rounding off the sharp edges.

Picked up a set of these to install on the axle shafts of my 2019 Pacifica and they work like a charm.For some reason the Pacifica doesn't have any sort of "locking" mechanism for their axle nuts, not even any sort of knurling on the face of the nut. You torque it down to the recommended foot-pounds and a a week later it has loosened itself. Some have tried going with a higher than recommended torque value and they still loosen up. This is happening to a surprising number of people based on what I've read in a Pacifica forum.Some bright sole in that forum came across these and gave them a try. Worked like a charm them. Other have tried them and had the same success. I figured what do I have to lose, so I bought a set myself, installed them, and torqued the nuts to the recommended value. I am very happy to say that I have checked the axle nuts 3 times over the last few weeks, and they are no longer backing off and loosening up. These lock washers have solved the problem for myself and many others. I highly recommended them for anybody with a 2017 to 2022+ Chrysler Pacifica that has the axle nut issue!

I did some testing with these and they work great. The resistance to backing out is far superior to a split lock washer. If it's important, these are worth the price.

Perfect product for my needs

The washers themselves seem like a great design. I used them to keep the muffler on my chainsaw. Previously it had fallen off because the bolts wouldn't stay in. Only time will tell if they work. I did notice that the description states they are glued together. The glue doesn't hold very long and they fall apart almost as soon as you pick them up. I'm not sure, but I don't think it matters as long as you put them together the same way when you use them. The only negative I have is that the company initially sent me the wrong size. But it was easily taken care of online at Amazon and I got a new package with the proper size in a few days.

Got these for spare parts for my Bren, they work fantastically well. I'm trying to find other applications to use these in.

Expensive, but it worked and has not backed off since installing. Awesome.