The Schlage 47492315 is the OEM Full Size Cylinder Kit, a comprehensive cylinder service package covering four distinct configuration groups: conventional and FSIC cylinders, Classic keyways with Primus RP upgrade, Everest 29 with and without Primus, and mortise and rim modular cylinder components. This is the field kit that covers every Schlage full-size cylinder replacement and upgrade scenario in a single order, designed for commercial locksmiths and facility managers who need to service, rekey, and upgrade Schlage cylinder installations across multiple lock formats and security levels without maintaining large separate inventories for each.

Per the Schlage Everest Full Size Cylinder Service Manual: modular cylinder components allow cylinder type, format, and application to be configured from stock, reducing inventory size and cost while ensuring the correct cylinder for any job is available on demand.

Schlage Lock Cylinder Types in This Kit: Conventional vs FSIC

The kit contains both conventional and Full Size Interchangeable Core (FSIC) cylinder formats. These are not interchangeable  they serve different operational requirements.

Conventional cylinders are the standard format, factory-installed in most Schlage cylindrical and mortise locks. Rekeying a conventional cylinder requires disassembling the lock or removing the cylinder from the lock body to access the pins. They are available in all keyway families and security levels and work across every Schlage product line: A, AL, B, CL, D, H, L, ND, and S Series plus mortise and rim applications.

FSIC cylinders use a control key for removal without lock disassembly. The control key engages the control pin at 15 degrees of clockwise rotation before the cylinder reaches the shear line, retracting the control lug and allowing the core to pull out of the lock housing. This makes FSIC the standard specification for large campuses, hospitals, schools, and any facility where frequent rekeying occurs due to tenant changes, lost keys, or security events, because cores can be replaced by non-technical personnel in seconds rather than by a locksmith with tools.

Classic Keyways with Primus RP: Upgrading Legacy Schlage Installations

The Classic Obverse keyway family is Schlage's legacy keyway system, anchored by the well-known C keyway. Primus RP (Raised Pin) is the Primus sidebar mechanism applied to Classic keyway cylinders. The Raised Pin design adds a secondary independent sidebar and finger pin locking mechanism to Classic cylinders without changing the keyway itself; existing keys still work, but unauthorized keys that haven't been factory-milled with the correct side bitting pattern cannot operate the cylinder. This upgrade path allows facilities running Classic keyway systems to add Primus security without a full rekey or key change.

Schlage Replacement Cylinder: Everest 29 With and Without Primus

The kit includes Everest 29 cylinders at two security levels. Everest 29 without Primus adds the check pin, a spring-loaded pin in a dedicated chamber at the base of the plug that must be lifted correctly by the key before the cylinder can rotate. This eliminates compatibility with Classic keyway keys and unauthorized cuts. Everest 29 with Primus XP adds the full secondary sidebar mechanism on top of the check pin, adding hardened steel anti-drill pins in UL 437 listed configurations and restricted geographic distribution where key blanks are available only to authorized end users.

Mortise and Rim Modular Cylinder Components

The modular component group covers the housings, cams, tailpieces, and plug extensions that convert the same conventional cylinder plug to mortise or rim format. The front housing, rear housing (six available lengths for different door thickness ranges), mortise cam, and rim tailpiece are all swap-in components. One cylinder plug with the correct modular housing configuration serves any application, which is why the service manual emphasizes that modular components on hand eliminate backordered cylinders and reduce installation time.

SecurityParts stocks OEM Schlage full size cylinder kits and individual cylinder components.