These ubiquitous industrial hinges in black finish are typical 52mm long by 40mm wide, complete with integral threaded fasteners for internal fixing on enclosures, access panels and lockers where they offer limited external opportunity for tampering.
FDB says that its zinc die butt hinges are a common choice for recessed doors and panels where 180° opening is required. They are available ex-stock and can be bought from the FDB Online Store.