Padlock Series 2
Master Keyed (“MK”) refers to a set of locks that can all be opened by a master key AND by their own key (differ key). A set of Master Keyed locks is called a system. Locks in a Master Keyed system can be opened by more than one key. Master keyed locks are almost always made to order according to our customer’s access requirements. MK systems often have a hierarchical arrangement and consist of a number of Sub Master Keys (“Subs”) under a Grand Master Key (GMK).