Made from medium-strength steel with a nylon insert, these Class 8 metric locknuts are strong enough to use on most machinery and equipment that’s prone to vibration and temperature changes. The nylon insert also won’t damage the threads on your bolt. All are reusable, but their holding power lessens with each use. Pair them with compatible Class 8.8 metric bolts.
I recently purchased Metric Steel Nylon-Insert Locknuts for a DIY project and I was extremely satisfied with my purchase. The quality of the steel is top-notch, providing durability and strength that exceeded my expectations. What impressed me even more was the flawless finishing—no sharp edges or inconsistencies. The nylon-insert adds an extra layer of security, ensuring that the nut stays in place under various conditions. All in all, a reliable and high-quality product that I would highly recommend.