Keyed Different - Each lock is opened by its own unique key that does not open any other lock in the set.
Keyed Different is the standard keying default on Master Lock padlocks.
Keyed Alike (KA) - This option provides “same key” convenience and eliminates the need for multiple keys where numerous padlocks are used. All padlocks in the set are opened by the same key.
KA in the product number designates that the products are Keyed Alike. In some cases, the customer can select a key code for the KA locks.
Master Keyed (MK) - In a Master Keyed System, a master key opens all the locks in the system although each lock also has its own unique key. This permits organizing master key systems along departmental or other functional lines to allow supervisory or emergency access.
MK in the product number designates that the products will be Master Keyed.
If the customer is adding on to an existing MK system, please specify the master key code.
