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Schlage C604-307 Universal Core Driver for A Series FSIC Cylinders
The Schlage C604-307 is a genuine OEM Universal Core Driver engineered as a direct replacement component for use with Schlage A Series Full Size Interchangeable Core (FSIC) cylinder applications. Designed for commercial-grade mechanical lock systems, this part ensures proper core alignment and operation within compatible A Series locksets. As an authentic Schlage replacement part, it delivers the precision fit and reliable performance that professional installers and facility managers depend on for maintaining high-traffic commercial door hardware.
Key Features
- Genuine OEM Replacement Part: Authentic Schlage component engineered to exact factory specifications for reliable, like-new performance when servicing A Series FSIC locks.
- FSIC Compatibility: Specifically designed for use with Schlage A Series Full Size Interchangeable Core (FSIC) cylinder systems, ensuring proper fit and function.
- Universal Core Driver Design: Universal driver configuration simplifies servicing and core replacement procedures within compatible A Series lockset assemblies.
- Commercial-Grade Construction: Built to the quality standards of Schlage's commercial mechanical lock product line, suitable for demanding institutional and commercial environments.
- Precise Engineering: Manufactured to tight tolerances to maintain the integrity and security performance of the parent A Series lockset after service or core replacement.
- Direct Drop-In Replacement: Designed for straightforward integration into compatible A Series FSIC hardware, minimizing downtime during maintenance or repair operations.
Technical Specifications
- Department: Door Hardware
- Product Category: Mechanical Locks
- Product Group: Parts and Accessories
- Subcategory: Parts and Accessories
- Product Subgroup: Parts and Accessories
- Product Type: Cylinders
- Parts and Accessories Type: Replacement Parts
- Commercial/Residential: Commercial
- Product Model: C604-307
- Features: Schlage Parts
Typical Applications
- Commercial Office Buildings Utilizing A Series FSIC Locksets
- Educational Facilities with Interchangeable Core Lock Systems
- Healthcare Institutions Requiring Scheduled Core Maintenance
- Government and Municipal Buildings with Schlage A Series Hardware
- Retail Establishments Servicing Existing A Series Door Hardware
- Industrial and Warehouse Facilities Maintaining Commercial Lock Systems
- Multi-Tenant Residential and Mixed-Use Properties with Commercial Lock Specifications
Why Schlage C604-307?
Schlage replacement parts like the C604-307 Universal Core Driver are manufactured to the same exacting standards as original production components, ensuring that serviced A Series FSIC lock assemblies continue to perform with the precision and security integrity expected in professional commercial installations. Choosing genuine Schlage parts eliminates compatibility guesswork and supports the long-term reliability of your door hardware investment.
Manufacturer Resources
Product Specs
- Department:
- Door Hardware
- Product Category:
- Mechanical Locks
- Product Group:
- Parts and Accessories
- Subcategory:
- Parts and Accessories
- Product Subgroup:
- Parts and Accessories
- Product Type:
- Cylinders
- Parts and Accessories Type:
- Replacement Parts
- Commercial/Residential:
- Commercial
- Product Model:
- C604-307
- Features:
- Schlage Parts
Schlage C604-307 – Frequently Asked Questions
1) What is the Schlage C604-307 universal core driver actually used for?
The C604-307 is a genuine Schlage replacement component for A Series full size interchangeable core (FSIC) cylinder applications. It sits inside the lockset and keeps the core aligned and driven properly, so it comes into play when you are servicing or swapping cores in an A Series lock rather than replacing the whole cylinder.
2) Will this Schlage part work with a small format interchangeable core lock?
No. The C604-307 is built for Schlage A Series full size interchangeable core (FSIC) hardware. If your cylinders take a small format core, this driver is the wrong part. For a small format core itself, a BEST 1C Series standard 5-pin core or the 1CB 150 Series interchangeable core is the kind of part you would be looking at instead.
3) Can I use the C604-307 in a Schlage L9000 mortise lock?
No. This driver is specific to A Series FSIC cylinder applications, not mortise lock cylinders. For an L9000 mortise opening, the cylinder-side part is a mortise cylinder such as the Corbin Russwin 1080 Series 1-1/2 inch LFIC 6-pin mortise cylinder with the A01 Schlage L cam, which is listed for Schlage L9000 mortise locks.
4) Is the Schlage C604-307 universal core driver the same thing as an interchangeable core, or do I still need to buy a core?
They are different items. The C604-307 is a replacement part - a universal core driver used with Schlage A Series full size interchangeable core cylinder applications to keep the core properly aligned and operating. It is not a keyed core and it carries no keyway or pinning. If what you actually need is the removable core itself, a BEST 1C Series standard 5-pin cylinder core or a BEST Peaks 1CB 150 Series interchangeable core cylinder is the keyed core component, and the BEST 1CDF is a drill resistant patented 7-pin interchangeable core in brass. Order the driver when you are servicing the lock's core-retention hardware and the core when you are changing keying.
5) My opening is a mortise lock, not an A Series knob or lever - what cylinder should I be looking at instead of the C604-307?
The C604-307 is tied to Schlage A Series full size interchangeable core cylinder applications, so it does not serve a mortise body. For mortise openings, the Corbin Russwin 1000 Grade 1 Series mortise cylinder comes in 1-1/2 inch length with an A02 straight cam, the CR1070 Grade 1 Series is a 1-1/4 inch 6-pin mortise housing with an A01 cloverleaf cam, and the Corbin Russwin 1080 Grade 1 Series is a 1-1/2 inch LFIC 6-pin mortise cylinder built for Schlage L9000 mortise locks with an A01 Schlage L cam. The Detex MC65 is a 1-1/8 inch 6-pin commercial mortise cylinder in Schlage C keyway. Match cam style to your lock body before ordering.
6) Will the Schlage C604-307 work on an aluminum storefront deadlock?
No. The C604-307 is a commercial replacement part for Schlage A Series full size interchangeable core cylinder applications, which is knob and lever hardware rather than narrow stile storefront gear. For Adams Rite MS1847 deadlock and deadlatch openings, the Adams Rite 4024 cylinder pull mounts with a trim plate and the 4025 is a five pin tumbler cylinder pull with through-screws; the 4026 five pin tumbler cylinder pull is the wood door version for the Adams Rite 5017 wood door deadlock. If you need the mortise cylinder alone for that family, the Adams Rite 4036 is a Grade 1 five-pin mortise cylinder with a 1/2 inch minimum door thickness.
7) Is the C604-307 a commercial part or is it for residential Schlage locks?
It is a commercial part. Schlage catalogues the C604-307 under its commercial mechanical lock line, and the A Series FSIC hardware it services is what you find on offices, schools, healthcare and government openings rather than on residential knobs and deadbolts.
8) Do I need a new core too, or just the driver?
The C604-307 is the driver only, a replacement service part. If the core itself is worn, damaged or you are rekeying to a new keyway, you order the core separately. Buy the driver when the core is fine but the driver inside the A Series lockset needs replacing after service.
9) I manage a building with Schlage A Series locks on every door. Is this the right part to keep on the shelf for core changes?
Yes, if your openings are A Series with full size interchangeable cores. The C604-307 is the genuine Schlage driver for that platform, so one part number covers the whole fleet of A Series FSIC locksets and you are not matching a different driver per door. It will not serve mortise or rim cylinder hardware, only A Series FSIC.
10) I need to re-key a key-in-knob or key-in-lever lock, not service an FSIC core - what replaces the cylinder itself?
The C604-307 is a service part for Schlage A Series full size interchangeable core applications and does not re-key anything on its own. For a straight keyed cylinder swap in knob and lever hardware, the Kaba Ilco 1539 Series is a key-in-knob and lever universal cylinder, the 1599 is a key-in-knob replacement cylinder, and the 1579 is a knob and lever cylinder made for Sargent hardware. For a key-in-deadbolt opening the Kaba Ilco 1549 Series applies. On Falcon RU/T Series hardware, the Falcon A23161-05 G is a 6-pin key-in-lever cylinder in the G keyway, keyed different with two cut keys.
11) What should I order instead of the C604-307 for a rim cylinder application?
The C604-307 is a core driver for Schlage A Series full size interchangeable core cylinders and has no rim application. For rim work, the Corbin Russwin 3070 is a 6-pin rim cylinder housing with a 1-7/8 inch tailpiece, and the BEST 12E Series is a dummy rim cylinder at 1-5/32 inch diameter for openings that need the look without a functioning cylinder. On residential-style handlesets and deadbolts, Medeco offers the 1012040 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts, the 1065244 5-pin lazy motion rim cylinder with an Emtek tailpiece, and the 1075127 5-pin lazy motion single cylinder for handlesets and deadbolts.
12) We have Emtek and Arrow interconnected hardware in a few units - does the Schlage C604-307 cross over to those?
It does not. The C604-307 is a Schlage-specific service part built for A Series full size interchangeable core cylinder applications and is not a retrofit cylinder for other manufacturers' bodies. For Emtek, the Emtek CY4 is the brand's own cylinder sold each, and the Medeco 1065244 is a 5-pin lazy motion rim cylinder supplied with an Emtek tailpiece. For Arrow JL interconnected locks, the Medeco 1065140 is a 5-pin retrofit cylinder that also covers Emtek handleset and deadbolt outside cylinder positions.
13) We are standardizing a campus on interchangeable core - is the C604-307 part of that decision or just a repair item?
Treat it as a repair and service item. The C604-307 is a genuine Schlage replacement part that keeps A Series full size interchangeable core cylinders aligned and operating, so it belongs on a maintenance shelf alongside spare cores rather than in a standardization spec. The keying program itself is decided by the cores you adopt: BEST 1C Series standard 5-pin cores, the 1CB 150 Series Peaks interchangeable core, or the 1CDF drill resistant patented 7-pin brass core in the 150 Series if the facility wants key control and drill resistance. Pick the core family first, then stock drivers and service parts for the lock bodies already hanging.
14) Is an aftermarket driver okay, or does it have to be the Schlage part?
The C604-307 is the genuine OEM Schlage component, made to the factory tolerances the A Series FSIC assembly is built around. Core drivers control how the core seats and turns, so an off-spec part is where binding and premature key failure come from. Using the Schlage part keeps the serviced lockset operating as built.
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Does the Schlage C604-307 come with a warranty?
Absolutely. The Schlage C604-307 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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