Need locking nuts that won't shake loose? This bulk pack of 100 #8-32 nylon lock nuts (often called Nyloc nuts) is super handy. They're made from A2/304 stainless steel, which is corrosion-resistant (that's the 18-8 or 304 grade). The locking action comes from the nylon ring (insert) inside the top of the nut. When you screw it onto a bolt, the nylon grips the threads, creating vibration-resistant friction that helps prevent the nut from backing off on its own. They're reusable for several times. These are imperial size with Unified National Coarse (UNC) threads: #8 size with 32 threads per inch. The hex width across flats is 11/32 inch, and the height is about 15/64 inch. They have a temperature rating up to about 220°F (104°C). They come neatly packaged in a reusable plastic box for easy storage. Perfect for all sorts of projects – automotive, machinery, furniture, DIY – anywhere you need a reliable, vibration-proof fastener that's also rust-resistant. A great value in a 100-piece bulk pack.