Pinet Small Stainless Steel Hinge. These high-quality steel hinges are made of Stainless Steel 304 that guarantees an enhanced durability and rust resistance. Features and Benefits:. Made of high-quality Stainless Steel. Riveted Pin. Robust, with excellent anti-corrosive properties. Natural raw colour finish. What are the dimensions of the hinges . Please, look at the specifications sections below to find an exact information. You can also find all the details in the datasheet. What does 304 mean in Stainless Steel . Type 304 is a type of stainless steel, and it's also known as "18-8" stainless steel because of its composition – it includes 18% chromium and 8% nickel. Type 304 stainless steel has good forming and welding properties, as well as strong corrosion resistance and strength.