The American National Standards Institute (ANSI) and
Builders Hardware Manufacturers Association (BHMA) have developed durability,
strength and performance standards for every type of door hardware...
Grade 1 locks are tested and certified to be in compliance with the following ANSI/BHMA Standards:
Cylindrical, Bored and Preassembled Locks & Latches
8...
Grade 2 locks are tested and certified to be in compliance with the following ANSI/BHMA Standards:
Cylindrical, Bored and Preassembled Locks & Latches
400,000 Certified Cycles
ANSI...