KSP 307 Series - 6 or 7-Pin SFIC Mortise Housing

The KSP 307 is a mortise cylinder housing that accepts a small format interchangeable core (SFIC), 6-pin or 7-pin. It's the threaded body only, not the core and not the lock. You mortise the housing into the lock or device, then drop your keyed SFIC figure-8 core into it, so the core can be pulled and rekeyed later without touching the housing. Order the core separately.

Five cams are offered, and the cam has to match the lock you're driving: 600 standard cam, 601 Adams Rite cam, 602 clover cam, 602-S Sargent cam, and 602-L Schlage cam. Pick by the hardware, not by preference. Adams Rite storefront deadlatches want the 601. Sargent mortise locks want the 602-S, Schlage the 602-L. The clover is the common mortise-lock tailpiece. Get this wrong and the cylinder threads in fine but never retracts the latch.

No. The cam is staked on and non-interchangeable, so the housing is committed to whichever cam you order. If you're stocking a truck or a shop for mixed hardware, buy separate housings per cam rather than expecting to swap one. Order the cam that matches the lock the housing is going into.

The housing ships without a core. To finish the opening you need a 6-pin or 7-pin small format interchangeable core keyed to your system, matching the pin count you specify on the housing, plus the control key to seat and pull it. If the job is new construction and the space isn't turned over yet, a construction core such as the Corbin Russwin 8000-CT6 blue 6-pin interchangeable core lets the trades key in temporarily and then be locked out when you swap in the permanent core.

Yes, with the 601 Adams Rite cam. That variant puts an Adams Rite pattern tailpiece on the 1-3/8 inch mortise body, which is the cylinder configuration aluminum storefront deadlatches are prepped for. Order the 601 cam specifically; the 600 standard and 602 clover cams will not drive that lock.

That's exactly what this housing is for. Pull the conventional mortise cylinder out of the lock, thread in the 307 housing with the cam that matches that lock brand (Sargent, Schlage, Adams Rite, or the clover/standard cams for general mortise hardware), and load your SFIC core. After that, rekeying any door on the property is a core swap with the control key instead of a locksmith visit. Buy the same finish across the building so the cylinder faces match.

They are two different parts of the same assembly and a mortise cylinder application needs both. The KSP 307 is the mortise housing - the threaded shell with the cam on the back that mounts into the lock case and accepts a small format interchangeable core. The core itself is the separate keyed plug that drops into that housing and pulls out with a control key; the Corbin Russwin 8000-CT6 BLUE 6-pin interchangeable core is an example of that half. Ordering a 307 housing alone leaves you without a keyed core, and ordering a core alone leaves you nothing to mortise into the lock. Match the pin count between the two - the 307 housing takes 6-pin or 7-pin SFIC cores.

Use a construction core during the build and swap to the permanent keying at turnover - that is the reason the small format interchangeable core system exists. The KSP 307 mortise housing stays in the lock permanently and accepts any 6-pin or 7-pin SFIC core, so the same housing carries the temporary core through construction and the permanent core afterward. The Corbin Russwin 8000-CT6 BLUE is a 6-pin blue construction core intended for that temporary phase. Choose the 307 cam that matches the lock you are mortising into - standard, Adams Rite, Sargent, or Schlage cams are all offered - since the cam is the part that has to match the lock, not the core.

The KSP 307 body takes either, so the decision is your keying system, not the hardware. Most Best-format masterkey systems in institutional buildings run 7-pin because the extra chamber gives more masterkeying depth; 6-pin is common on smaller systems and on many construction-core programs. Match whatever your existing cores and control key are cut for. Mixing pin counts in one system is what breaks masterkeying.