A latch (called sneck in Northern England and Scotland) is a type of mechanical fastener that is used to join two (or more) objects or surfaces together while allowing for the regular or eventual separation of the objects or surfaces. A latch typically engages another piece of hardware on the other mounting surface. Depending upon the type and design of the latch, this engaged bit of hardware may be known as a keeper or strike. Note that a latch is not the same as the locking mechanism of a door or window, although often they are found together in the same product.
Latches range in complexity from flexible one-piece flat springs of metal or plastic, such as are used to keep blow molded plastic power tool cases closed, to multi-point cammed latches used to keep large doors closed.
Builders' hardware, or just builders hardware, is a group of metal hardware specifically used for protection, decoration, and convenience in buildings. Building products do not make any part of a building, rather they support them and make them work. It usually supports fixtures like windows, doors, and cabinets. Common examples include door handles, door hinges, bolts, latches, numerals, letter plates, switch plates, and door knockers.
Main suppliers in the world of builders hardware mainly exist in China, India, Mexico and some in the U.S.