 The American National Standards Institute (ANSI), a private non-profit organization, and the Builders Hardware Manufacturers Association (BHMA) administer and coordinate the voluntary standardization to develop and maintain performance standards for builder's hardware.Locks and handle sets are covered by standard A156.2, deadbolts by A156.5, and finishes by A156.18.The grade specified according to the standards of ANSI/BHMA indicate the security and durability of the lockset.