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Home Construction Visual Guide 3:
Door Hardware

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LOCKS

ANSI Grading System
BHMA (Builders Hardware Manufacturers Association) is accredited by the American National Standards Institute (ANSI), a private non-profit organization that administers and coordinates the voluntary standardization to develop and maintain performance standards for builder's hardware. ANSI/BHMA standards set forth different product grades for door hardware products. These product grades are defined by progressive levels of performance benchmarks in each applicable standard. The purpose of each is to help identify the quality and durability of locksets through a series of operational and security tests.

What value does this bring to the consumer?
The process of certifying products is strictly voluntary -- a responsible lock manufacturer should bear a certain responsibility to let consumers know what type of product they are purchasing. Here are the standards set by ANSI.

Ansi

ANSI/BHMA A156.XX designation of Standards for Door Hardware
Deadbolts are covered by standard: A156.5
Locks and Handlesets: A156.2
Interconnected: A156.12
Finishes: A156.18

Each grade specifies minimum acceptable requirements for:

Operation i.e.: key torque; cycles
Security i.e.: pull strength, impact resistance
Finish


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Last modified: Thursday, 2007-06-14 22:57 PST

MORTISE LOCK, cylinder, stator, key, rotor, spring, cotter pin, cylinder case keyway, dead bolt ring, faceplate, strike plate TUBULAR LOCK
nut
- - outside knob
bolt
rose
spindle
faceplate
latch bolt
inside knob
push-button