Sargent & Greenleaf Chrome Spy Proof Dial Ring D225

The key locking convertible dials do not require the door to be counterbored prior to installation. Therefore, they can be easily installed in the field. Dials are equipped with single spline 5/16"" - 40 spindles. A spindle is pressed into a dial with its spline keyway aligned to either 41 or 50 on the dial, as indicated in the table. The #41 splining location is required to ensure full lock bolt extension when key-locking dials are locked down with zero under the opening index. Dial spindles will accommodate a maximum door thickness of 3.4 inches. Thicker doors require a special order dial. Dial rings are shipped with dial ring bearings and necessary mounting hardware for standard installation.