Review on Guard4U Assortment 7 Kinds Stainless Self Locking by Jimmy Bhat

Nylon insert aircraft nuts eliminate the need for lock washers. You'll have to take one fewer step and one fewer purchase. I have used aircraft nuts for many years without incident. For heat-conducting surfaces such. B. the inside of an internal combustion engine, you need a teflon insert, not nylon. But those locknuts hold securely until you remove them. Never had a problem. There are so many metrics these days...but I needed SAE nuts and bolts for this application.