Schlage Custom 47424224 FC172 Component Chassis Kit

It is a component, not a lockset. Part 47424224 (FC172) belongs to Schlage's Custom Series and is supplied as construction balls, 1,000 pieces to a pack. What you receive is the balls themselves, so this is the piece you order to key locks that are already hung or being hung, not a lock with trim, cylinder and strike in the box.

Construction keying is the job. A small steel ball sits in the plug so a construction key runs the lock while the trades are still in the building, and the first turn of the owner's permanent key releases the ball out of the plug, which kills the construction key from that point on. No cylinder swap, no second trip to rekey once the job closes out. The 47424224 pack is those balls, 1,000 of them, which is the volume a builder or a locksmith shop burns through keying a whole project.

One pack configuration only, 1,000 pieces. The 47424224 is bulk stock aimed at a builder, a locksmith shop or a distributor keying a full project or a community, not a per-door part. For a handful of openings you are still buying the full pack and carrying the balance, which is how most shops treat keying consumables anyway since they get dropped and used up quickly.

Residential. The Custom Series is Schlage's residential line, so 47424224 suits single family, townhome and multifamily unit doors being construction keyed during a build. If the openings are running heavy duty commercial cylindrical or mortise hardware, the construction keying components come out of Schlage's commercial lock lines instead, so confirm which family the locks on your job actually are before you order a case of these.