BHMA residential lock ratings
BHMA Secure Home residential lock ratings assess security, durability and finish separately. Read all three dimensions rather than treating the label as one overall grade.
Standards and testing
Understand residential lock ratings, durability and finish tests, and distinguish test results from promises about use.
Door-lock durability testing
Durability testing checks whether a lock continues to work after repeated operation and specified loads. Test-cycle counts do not directly represent years of service.
Door hardware finish and corrosion testing
Finish testing evaluates how coatings or finishes perform under specified environmental conditions, including corrosion and humidity. A colour name is not a corrosion-resistance grade.