The Schlage 03-235-8SP is the OEM Sparta Tactile Lever with factory preparation for Corbin Russwin Full-Size Interchangeable Core (FSIC/LFIC) J-CO7 7-pin cores, for the Schlage AD Series and CO Series cylindrical locks, documented in two official Schlage Service Manuals: AD Series and CO Series. Per the SecurityParts.com product page, the 03-235-8SP "is supplied less core, allowing installation with a compatible Corbin Russwin J-CO7 7-pin FSIC." The product type is confirmed as "Full Size Interchangeable Core (FSIC/LFIC) Lever Trim (Less Core)." Tactile Sparta lever. Non-handed.

Three Legacy Part Numbers Replaced by the 03-235-8SP

The 03-235-8SP replaces three legacy part numbers, as confirmed on the SecurityParts.com product page under "Original Part#."

• 23854557: Original part number for cylindrical lock outside trim positions. This legacy number uses a numeric format.
• 09-366-8SP: Original part number for mortise lock trim applications. The 09 prefix in the legacy Schlage system identified mortise trim levers.
• 03-366-8SP: Original part number for exit device outside trim applications.

All three installation types are served by the 03-235-8SP as the current OEM part. Any maintenance record or specification referencing these three legacy numbers maps to the 03-235-8SP for current ordering.

03-235-8SP vs 03-235-8RO: Key Differences Within the 03-235 Family

The 03-235-8SP and the 03-235-8RO (Rhodes Tactile Lever, Corbin Russwin FSIC J-CO7) are both tactile levers in the 03-235 Corbin Russwin FSIC J-CO7 format. Both ship less core and accept the Corbin Russwin J-CO7 7-pin FSIC core. Three notable differences distinguish them.

First, the lever profile. The 03-235-8SP uses the Sparta design and the 03-235-8RO uses the Rhodes design. Second, the product type. The 03-235-8SP is listed as "Full Size Interchangeable Core (FSIC/LFIC) Lever Trim (Less Core)" which includes LFIC (Large Format Interchangeable Core) alongside FSIC. The 03-235-8RO lists only FSIC. Third, the Service Manual and series coverage. The 03-235-8SP is documented in two Service Manuals (AD and CO only) and has a formal compatibility list covering AD and CO Series. The 03-235-8RO is documented in four Service Manuals (ALX, ND, AD, CO). When the installed lock is an AD or CO Series configured for Corbin Russwin FSIC J-CO7 cores and the Sparta profile is specified, the 03-235-8SP is the correct part.

Series Compatibility and ALX Series Note

The formal compatibility section on the SecurityParts.com product page lists AD Series and CO Series. The Schlage AD Series and CO Series are electronic access control cylindrical lock platforms. The 03-235-8SP body description also references ALX and ND Series, but only the AD and CO Service Manuals are listed in the Catalogs section. Confirm the installed series before ordering. Ten finishes are listed: 605, 606, 612, 613, 619, 622, 625, 626, 626AM, and 643E. Finish must be specified at time of order. Contact SecurityParts.com for current finish availability. The Corbin Russwin FSIC J-CO7 core is not included and must be ordered separately.

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