The Schlage 12-627 is the OEM deadbolt faceplate conversion kit for the B Series, square corner, 1-1/8" x 2-1/4", documented in the Schlage B Series Service Manual. The kit includes the square corner faceplate, the backplate, and mounting screws - everything needed for a complete faceplate replacement or conversion in a single order. Finish must be specified at time of order.

The 12-627 is specifically the square corner format. The corners of the faceplate are 90-degree right angles that seat flush in a standard square corner door edge mortise preparation. If the door edge preparation has radiused corners rather than square corners, the round corner or drive-in faceplate format applies instead.

What the Faceplate and Backplate Do in a B Series Deadbolt

In any deadbolt installation, the bolt housing assembly sits inside the door edge. The bolt housing extends from the face of the door edge where the bolt exits to throw into the strike. Two metal plates frame that installation:

The faceplate is the visible metal plate on the door edge face that surrounds the bolt housing opening. It provides a finished appearance at the door edge, covers the raw wood or metal of the door edge bore, and reinforces the connection point where the bolt exits the door. On a correctly installed deadbolt, the faceplate sits flush with the door edge surface - it should not protrude above the edge surface or sit below it.

The backplate sits on the interior side of the door edge preparation, backing the faceplate screw engagement. It distributes the clamping load from the mounting screws across a wider surface area on the door edge cavity wall rather than concentrating it at the screw hole alone.

When the faceplate is damaged - bent from a forced entry attempt, corroded from moisture exposure on an exterior door, scratched during renovation work, or simply worn - replacing it with the 12-627 kit restores both the structural integrity and the finished appearance of the door edge without requiring replacement of the bolt assembly itself.

Schlage Faceplate Kit: Conversion vs Standard

The Schlage B Series deadbolt ships from the factory with the 12-326 triple-option faceplate kit - a package that includes round corner, square corner, and drive-in faceplates so the installer can choose the correct format for the specific door preparation at time of installation. After installation, the unused faceplate options are typically discarded.

The 12-627 is the standalone square corner conversion kit. It's ordered when the original square corner faceplate was lost, damaged, or was never retained after the original installation, and a replacement is needed without purchasing a complete bolt assembly. It's also the correct part when changing door hardware finish across an installed building - replacing only the faceplate and backplate to match a new finish specification without pulling the entire bolt assembly.

Schlage Deadbolt Set: B Series Faceplate Finish Options

The 12-627 is available in multiple finishes to match the installed B Series deadbolt. Confirmed finish options include 613 (Oiled Bronze/Aged Bronze) and 626 (Satin Chrome). The full Schlage B Series finish range includes 605 (Bright Brass), 606 (Satin Brass), 612 (Satin Bronze), 613 (Oiled Bronze), 619 (Satin Nickel), 622 (Matte Black), 625 (Bright Chrome), and 626 (Satin Chrome). Specify the finish code that matches the installed deadbolt hardware - a mismatched faceplate finish creates a visible color mismatch on the door edge.