Industrial fasteners are commonly used in aerospace, military, construction, and other industries. They featured extremely strong, extremely weather resistant, and almost completely corrosion- and rust-proof. They are made from many different metals, such as stainless steel, chromium, and carbon.
Industrial fasteners can take many forms used for different purposes. Here is a partial list of available industrial fasteners: anchors, bolts, cap screws, captive panel fasteners, drywall and deck screws, eye bolts, machine screws, nuts, rivets, screw driver insert bits, self clinching fasteners, self drilling screws, self tapping screws, sockets, spring nuts, washer, thread cutting screws, thread rolling screws, thumb-and-wing screws and weld screws.
Industrial fasteners can be found in three main sizing standards: ASTM (the American Society for Testing and Materials), SAE (the Society of Automotive Engineers), and ISO (the International Organization for Standards). Each recommends its own system of measuring and manufacturing fasteners. None are better than any of the others, just depending on what job you are doing.
From: http://www.hualong-fastener.com/news/info-214.html