A Stainless Steel Fastener is recognized by a helical ridge, known as a male thread or thread just wrapped around a cylinder. A bolt or screw is kind of fastener. Some screw threads are known as female thread as they are designed to mate with a complementary thread, some times in the form of a nut or an object which has an internal thread formed into it. Because other screw threads are designed to cut a helical groove in a softer material as the screw is inserted
Stainless steel is an alloy of Iron with a minimum of 10.5% Chromium. Chromium produces a thin layer of oxide on the surface of the steel known as the’passive layer’. This prevents any further corrosion of the surface. Increasing the amount of Chromium gives an increased resistance to corrosion.
Stainless steel also contains varying amounts of Carbon, Silicon and Manganese. Other elements such as Nickel and Molybdenum may be added to impart other useful properties such as enhanced formability and increased corrosion resistance.
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