When you’re making the effort to build something with stainless steel bolts, you really want it to stay together - that’s why you’re using stainless steel in the first place. Think of the confidence you’ll gain when you use these 18-8 stainless steel anti-vibe nuts! Like our other anti-vibe nuts, a special insert locks onto the threads to help prevent loosening due to vibration. Note that Stainless often "galls" (seizes) when tightening a nut under load making it difficult to move. This can be prevented with "Never-Seize" available in most auto parts stores.Imported.