Need some seriously tough, corrosion-resistant nuts? This 25-pack of 3/8-16 UNC hex nuts is exactly that. Made from Grade 316 stainless steel – the good stuff that stands up to saltwater and harsh chemicals – they're perfect for marine, automotive, or outdoor projects. They're brand new, meet ASME B18.6.3 standards, and are made right here in the USA by Brighton (model FHN-SS-38316). Just a heads-up, there's a Prop 65 warning about chemicals in petroleum products (it's a California thing related to manufacturing). But for your actual use, these nuts are top-notch. Whether you're building a boat trailer, fixing patio furniture, or working on anything that needs to last, these 316-grade nuts won't let you down. Grab a pack and stop worrying about rust!