BHMA A156-11:2004 pdf download.AMERICAN NATIONAL STANDARD FOR CABINET LOCKS
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.
4.3 Cabinet Door or Drawer Locks Drawer or cabinet door locks are installed from inside of the drawer or door, inserting the cylinder or barrel into a cutout (bore) in the drawer front or door. The surface of the cylinder is flush or slightly above the outer surface. Surface mounted cases attach to the inner surface of the drawer front or door and half mortise lock cases are partially mortised into the back.Cases are attached to drawers and doors with screws or other methods standard with the manufacturer. Insertable bolt locks are installed in drawer fronts or doors into a cutout (bore) from the outside and secured from the inside with a nut, a spring clip, or by other means.
4.4 File Cabinet I ocks File cabinet locks are installed from the inside of the cabinet located in the cabinet framework into a cutout (bore). When locked, the surface of the cylinder is flush with or slightly protruding from the frame surface. Locks are secured within the cabinet by attachment to the latch mechanism.
4.5 Lever and Tee Handle Locks Levers and Tee Handles are installed in cabinet doors from the outside through a cutout (bore) and secured from inside. A cam on the inside is rotated by turning the lever or tee handle except when locked by a key from outside. As specified in manufacturers' catalogs,cams are positioned at any position within 360 degrees and are rotated to a stop at 90 degrees, 180 degrees, or other rotations and in a clockwise or counterclockwise rotation to lock. Some manufacturers provide for 1, 2, or 3 point locking using top rods, bottom rods, and guides furnished by the manufacturers or others.BHMA A156-11 pdf download.