Schlage Commercial 20-030 Dura Steel Letter/Mail Box Cylinder, C Keyway, Keyed Different

Fit comes down to two things, and the 20-030 states both: it is built for Schlage C cabinet locks, and it is a 6-pin cylinder cut to the Schlage C keyway. If the cabinet, drawer, or letter box lock you are replacing into is a Schlage C unit, this is the matching cylinder. If your existing hardware runs a different keyway (Everest, or another manufacturer's section), a C keyway cylinder will not accept those keys and is the wrong part.

Yes, and that is the point of the 20-030. It ships keyed different, so each cylinder operates on its own key and no tenant's key opens a neighbour's box. That is what you want for a multi-family or office mail bank. If you are looking for one key that opens every box on the run, such as a maintenance or master arrangement, keyed different is not the option to order and you will need the cylinders keyed to a common system by a locksmith instead.

Non-handed, so the same cylinder goes into a left-hinged or right-hinged door without ordering a second version. Handing on a cabinet or letter box lock is set by the cam and the lock body, not the cylinder, so you can stock one part number across a mixed bank.

It is a 6-pin cylinder in the Schlage C keyway, which is the most common Schlage section and the one every locksmith stocks pinning kits and blanks for. Any locksmith working in C can pull it down and rekey it to a cut you already use. It arrives keyed different, so if the boxes need to fall under an existing C system, plan on that rekey at install rather than expecting it out of the carton.

No. The 20-030 is a cabinet and letter box cylinder, made for Schlage C cabinet locks and cabinet or drawer hardware. It is not a mortise cylinder or a key-in-knob plug for an entry lockset, and it will not thread or retain in one. For a door, you need the cylinder specified for that lock family. Where it belongs is mailboxes, cabinets, drawers, and similar cam-operated locks.

It is a commercial part, not a residential one, and the cylinder is Dura Steel rather than a light pot metal plug. Combined with 6 pins instead of 5, that is the specification to hold up in a lobby, mailroom, or shared cabinet run where the lock gets used daily by people who are not gentle with it.

Finish is the only choice to make. It comes in 606 satin brass, 613 oil rubbed bronze, and 626 satin chrome, so pick the one that matches the other boxes or cabinet pulls on the run. Everything else is fixed: C keyway, 6 pins, non-handed, and keyed different. Where the bank is already 626, order 626 and the new cylinders will not stand out against the ones you are not replacing.