Kwikset KWI-664 Retrofit Kit for 663

The 664 is the exterior plate that converts a Kwikset 663 single-sided deadbolt into a 667 double-sided setup, once the door has been bored through. The 663 is keyless on the outside; adding the 664 plate gives you the exterior side. Note the door has to be bored all the way through for the conversion, so if your 663 was installed on a door with no through-bore, you have drilling to do first.

No. The 664 is built as the exterior plate for the Kwikset 663 deadbolt and nothing else. If you have a different deadbolt and want key access on both sides, you're looking at a different part or a full replacement lock, not this kit.

The 664 is a residential part. For multi-family entries, corridor doors, or anything on a commercial opening under a facility spec, a residential Kwikset deadbolt conversion is the wrong direction. Look at a commercial-grade deadbolt or mortise lock instead.

No. The Kwikset 664 is a one-sided retrofit kit exterior plate for the 663 deadbolt, and it converts a 663 to a 667 once the door is bored through. The Trimco 1268 is an anchor plate measuring 3-1/2 inches in diameter, a separate part that does not carry a deadbolt exterior trim. If the goal is to give a 663 an outside plate, the 664 is the part that does it; the 1268 does not substitute for it.

Two: satin nickel and satin chrome. If you're matching an existing 663 already on the door, pick the one that matches the interior side you have, since both halves of the conversion end up visible from opposite sides of the same opening.

A screwdriver. The 664 plate goes on in minutes with nothing else, assuming the door is already bored through. The drilling, if the door isn't bored, is the part that takes real tooling.

Yes, provided each door gets bored through. The 664 plate is the piece that turns a 663 into a 667, so it's a repeatable per-door conversion rather than pulling and replacing every deadbolt. Order the same finish across the fleet so the exterior faces match unit to unit; satin nickel and satin chrome are the two choices.

Different jobs entirely. The 664 is the exterior trim plate that completes a 663 deadbolt into a two-sided 667. A strike, like the Cal-Royal ASA478 template ASA strike, is the frame-side piece the bolt throws into. An anchor plate such as the Trimco 1268, 3-1/2 inches in diameter, is a mounting reinforcement. If your bolt isn't catching the frame, the 664 is not the part you need.

No, they solve different halves of the opening. The Kwikset 664 is the exterior plate that retrofits onto a 663 deadbolt so it reads as a 667 after the door is bored through, and it installs with just a screwdriver. The Cal-Royal ASA478 is a template ASA strike for commercial door hardware, so it is the frame-side strike rather than any part of the deadbolt trim. A 663 conversion needs the 664; a frame prep needing an ASA strike is a separate line on the order.

The 664 is described as the exterior plate for the 663 deadbolt, and that is what the kit covers. Don't plan the job around keys or a cylinder arriving in the box.