At Master Lock, the health and safety of our associates is always a priority. During this rapidly evolving time, we’re taking the necessary precautions to help reduce the spread of COVID-19 in our communities and our facilities while continuing to meet our customers’ needs. For the latest information and resources regarding COVID-19, please visit the World Health Organization website.

Operating and Mounting Instructions FAQs

Q: How much time will it take to install new locks?


Simply by using a Phillips head screwdriver, most individuals can replace their existing locks in just 10-15 minutes each.

Q: Where can I find the operating and mounting instructions of my lock?


View the operating instructions for Door Hardware products.

Q: How do I know if my door is right–handed or left–handed?


To determine the Handing of a door face the OUTSIDE of the door.

Q: I would like to replace my Master Lock handleset that was purchased prior to 2004. Will your current handlesets retrofit the holes in my door?


There were a variety of handlesets produced by Master Lock. The current styles have an 8 13/32" distance between the handleset bore, and the lower mounting screw. If your current handleset has a different dimension, you will need to plug the current hole and re-drill.

Q: How do I remove the knob and rosette to access the mounting screws?


Insert the included tool into the hole in the rosette and depress the pin at the base of the knob. Then pull the knob off. The rosette can be un-snapped from the mounting plate by either pulling the tab, or carefully prying. Reverse the procedure for installation.

Q: Where can I find the instruction sheet of my Master Lock product?


View the instruction sheets for Door Hardware products.