1600 Series Master Key #'s by Master Lock starts with a "F" and has 3 numbers after it. The master key will open all locks associated with that master key. If you do not know what master key you have you must destroy a lock and look under the black dial portion of the lock for a red flag that is 1/8"x3/8" with a stamped key number on it. This lock will be destroyed completely and will not be able to be used again. You either are buying locks with master keys and need to order as new series or you have an existing master key series that start with F or S.
Are you looking for commercial hardware? Robert Brooke and Associates specializes in commercial hardware for schools, universities, churches, YMCA, offices, businesses, warehouses and exhibit halls. Order your commercial hardware online by using this site, or call Robert Brooke and Associates for your commercial hardware specialties by phone at (800) 642-2403 weekday from 8AM—5PM Eastern Time. Robert Brooke and Associates ships commercial hardware in the United States, Canada and the world, and has been doing so since 1970. For the best price on commercial hardware with personal service and fast delivery times, call Robert Brooke and Associates
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