Schlage B520-698 Non-Modular Mortise SFIC/FSIC Cam, For Use With Falcon MA Series (Except 381)

The B520-698 is the mortise cam that bolts to the back of a small format interchangeable core (SFIC) or full size interchangeable core (FSIC) mortise cylinder housing. The cam is the tail piece that rotates with the key and drives the lock case. Without the correct cam the cylinder will turn but won't operate the lockset. It's a non-modular cam, so it's a one-piece part rather than a build-up modular assembly.

No. The B520-698 is called out for Falcon MA Series mortise locks only (excluding the 381). Mortise cams are function and lock-brand specific, so pairing it with another manufacturer's mortise case isn't something this part is specified for. Order the cam listed for the lock case you're actually working on.

Yes, that's the intended use. The B520-698 fits SFIC and FSIC mortise cylinder housings, which is the format used when a facility wants cores that can be pulled and rekeyed with a control key rather than pinning cylinders in place. The cam itself carries no keying, it just drives the lock; the keying lives in the core.

It's built from stainless steel and catalogued as a commercial part, which is what you want on a cam that takes the torque of every key turn on a heavily used door. Stainless also holds up on exterior and coastal openings where a plated steel part would corrode.

Just the cam. You supply the SFIC or FSIC mortise housing and the core separately. A common order for one opening is housing, core, cam, and the screws that come with the housing.

B520 identifies the cam and 698 is the Schlage designation that completes the part number. Order it as B520-698; it's a single part number with no size, hand, or finish options to select, so there's nothing else to specify beyond quantity.