BHMA A156-11:2019 pdf download.AMERICAN NATIONAL STANDARD FOR CABINET LOCKS
1.SCOPE
1.1 BHMA A156-11 establishes requirements for Cabinet Locks used on doors, drawers and furniture.Cycle tests, operational tests, strength tests and finish tests are included.
1.2 Tests described in this Standard are performed under laboratory conditions. In actual usage, results vary because of the material used in the installation, maintenance and environmental conditions.
1.3 The intent of this standard is to provide fair, uniform and repeatable testing of cabinet locks. Each testing section of the standard identifies the tools and/or fixtures applicable to that particular test. Werecognize that any cabinet lock can be compromised or destroyed by excessive force or extended time or by the use of custom designed tools or techniques. For cabinet locks to be used beyond the scope of this standard, we recommend the guidance of or consultation with an independent physical security specialist.
1.4 No lock can provide complete security by itself. I ocks may be defeated by forcible or technical means, or evaded by entry elsewhere on the property. No lock can substitute for caution, awareness of your environment, and common sense. Builders hardware is available in multiple performance grades to suit the application. In order to enhance security and reduce risk, consult a qualified locksmith or other security professional. For applications where pick resistance and other higher security protections are required users should consider locks meeting ANSI/UL 437 or ANSI/BHMA A156.30 for High Security Cylinders.
1.5 Grade Qualifications Two classifications of tests are described in this Standard, Operational and Security. Manufacturers shall indicate the Grade level. A Grade 1 product shall meet all Grade 1 criteria,a Grade 2 product shall meet all Grade 2 criteria, and a Grade 3 product shall meet all Grade 3 criteria in each classification.
4.1 Cam Locks Cam locks are installed in drawer fronts and in cabinet doors through a mounting cutout (bore) from the outside or inside and secured from the inside with a nut, a spring clip, screws, or by other means. Cams are rotated by turning a key. Cams are positioned at any position within 360 degrees and can be rotated 90 degrees, 180 degrees, or other rotations as specified in manufacturers' catalogs.Cams shall be straight, offset, hook, or of other similar configurations.
4.2 Chest Locks Chest locks are installed from the inside of the door frame of the cabinet, inserting the cylinder or barrel into a cutout (bore) in the door or frame. The surface of the cylinder is flush or protrudes slightly above the outer surface. Surface mounted cases attach to the inner surface of the door and half mortise locks are partially mortised into the back. Cases are attached to doors or frames with screws or other methods standard with the manufacturer.BHMA A156-11 pdf download.