Hinges are typically used for mounting doors and covers to swing open or closed. These standard parts are widely used in mechanical engineering. Due to the wide range of different designs, there are practically no limits on the possible applications.
As you can see they come in a large selection of materials including stainless steel, zinc die cast, plastic and Steel and diverse types such as those for flush fitting doors, anti-tamper hinges, with spring loaded return and many more. Accessories such as bolt sets, spacer plates and limit stops are also available.