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Schlage L583-200 Cam Screw for Mortise FSIC Cylinders
The Schlage L583-200 is a genuine OEM cam screw designed specifically for use with Mortise Full-Size Interchangeable Core (FSIC) cylinders. As an authentic Schlage replacement part, the L583-200 ensures proper fit and function within compatible mortise lock assemblies, maintaining the integrity and performance of the locking system. Sourced directly as a Schlage-branded component, this screw pack is the correct installation accessory for commercial-grade mortise FSIC applications.
Key Features
- Genuine Schlage OEM Component: Authentic Schlage part engineered to exact tolerances for reliable performance and proper fitment in compatible mortise FSIC cylinder assemblies.
- FSIC Cylinder Compatibility: Designed specifically for use with Mortise Full-Size Interchangeable Core (FSIC) cylinders, ensuring correct cam engagement and secure cylinder retention.
- Commercial-Grade Quality: Manufactured to commercial standards appropriate for demanding institutional and commercial door hardware applications.
- Screw Pack Format: Supplied as a convenient screw pack for installation or replacement needs, simplifying procurement of essential hardware components.
- Installation Accessory: Classified as an installation accessory within the Schlage parts and accessories ecosystem, providing the correct fastener for mortise lock cylinder installations.
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: Screw Pack
- Parts and Accessories Type: Installation Accessories
- Commercial/Residential: Commercial
- Product Model: L583-200
- Features: Schlage Parts
Typical Applications
- Commercial Office Buildings with Mortise FSIC Lock Systems
- Educational Facilities Utilizing Schlage Interchangeable Core Hardware
- Healthcare Institutions with Commercial Mortise Cylinder Installations
- Government and Municipal Buildings Requiring Genuine OEM Replacement Parts
- Industrial and Warehouse Facilities with Commercial-Grade Mortise Locks
- Multi-Tenant Commercial Properties Maintaining Schlage Lock Systems
- Institutional Facilities Performing Scheduled Mortise Cylinder Maintenance
Why Schlage L583-200?
Schlage parts and accessories are manufactured to the same exacting standards as the original hardware, ensuring compatibility and reliable performance within Schlage mortise lock systems. The L583-200 cam screw provides installers and facilities maintenance professionals with a genuine OEM solution for mortise FSIC cylinder installations, eliminating the uncertainty associated with non-OEM alternatives. For commercial applications where proper cylinder function is critical, specifying authentic Schlage components is the professional standard.
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:
- Screw Pack
- Parts and Accessories Type:
- Installation Accessories
- Commercial/Residential:
- Commercial
- Product Model:
- L583-200
- Features:
- Schlage Parts
Schlage L583-200 – Frequently Asked Questions
1) What does the Schlage L583-200 cam screw actually do in a mortise lock?
The L583-200 is the cam screw that fastens the cam to a mortise full-size interchangeable core (FSIC) cylinder, so the cam turns with the core and drives the mortise lock body. Without it the cylinder spins without retracting anything. It is supplied as a screw pack, not as a cylinder or a core.
2) Will the Schlage L583-200 work with a rim or key-in-knob cylinder?
No. The L583-200 is specific to mortise FSIC cylinders. Rim cylinders use a tailpiece and back plate rather than a threaded cam screw, and key-in-knob cylinders retain differently, so this screw has no place in either.
3) Is the Corbin Russwin 433F77 screw pack a substitute for the Schlage L583-200 cam screw?
No. The Schlage L583-200 is a cam screw for Mortise Full-Size Interchangeable Core (FSIC) cylinders, so it fastens the cam to the cylinder inside a Schlage mortise lock. The Corbin Russwin 433F77 is a screw pack for ML2000 M and P escutcheons, meaning it fastens trim to the door rather than retaining a cylinder cam. They serve different points in the lock assembly and are not interchangeable.
4) What is the equivalent cam or trim screw if the mortise lock is a Corbin Russwin ML2000 rather than a Schlage?
Corbin Russwin offers its own ML2000 fastener parts rather than using the Schlage L583-200, which is built for Schlage mortise FSIC cylinders. For ML2000 escutcheon trim there is the 429F31 screw packet for the N escutcheon and the 433F77 pack for M and P escutcheons; for lock body and strike fastening there is the 425F86-8 flat screw in 8-32 x 3/8 inch and the 206F57-8 strike combo screw. Match the part to the specific ML2000 trim or strike you are servicing.
5) I lost the cam screw off a Schlage mortise core cylinder. Is an off-the-shelf machine screw a safe substitute?
Use the OEM part. The L583-200 is the genuine Schlage cam screw sized for the cam and cylinder thread on mortise FSIC housings; a generic screw that is long, short, or the wrong thread can bind the core, back out under cycling, or leave the cam loose on the plug.
6) Does ordering the L583-200 get me a replacement cylinder or core as well?
No. This is the fastener only, a screw pack listed as an installation accessory. If you are replacing a whole mortise FSIC cylinder you need the cylinder housing and the interchangeable core ordered separately in your keyway.
7) I need a screw for the strike, not the cylinder. Is the Schlage L583-200 the right part?
No. The L583-200 is a cam screw used with mortise FSIC cylinders. For strike fastening on a Corbin Russwin ML2000 mortise lock, the 206F57-8 is the strike combo screw. Confirm which lock line is in the door before ordering, since the two brands' fasteners are not cross-compatible.
8) Can a generic 8-32 machine screw be used in place of the Schlage L583-200?
The L583-200 is a genuine Schlage OEM cam screw sized for correct cam engagement and cylinder retention in mortise FSIC assemblies, and Schlage specifies it as the matching fastener for that job. Other catalog fasteners such as the Corbin Russwin 425F86-8, an 8-32 x 3/8 inch flat screw, are dimensioned for their own ML2000 lock and are not a stated substitute for the Schlage cam screw. For FSIC cam retention, use the OEM part.
9) Which screw pack do I order for an escutcheon trim job versus a cylinder swap?
For a cylinder swap on Schlage mortise FSIC hardware, the L583-200 cam screw is the fastener that secures the cam to the core cylinder. For escutcheon trim on Corbin Russwin ML2000 locks, the 429F31 packet covers the N escutcheon and the 433F77 pack covers M and P escutcheons. Identify the brand of lock and the exact task before ordering, as these packs are not interchangeable across the two lines.
10) Is the Schlage L583-200 cam screw a commercial-duty part or for residential locks?
Commercial. The L583-200 is catalogued as a commercial part and is used on institutional mortise FSIC installations, the kind of interchangeable-core system found in schools, hospitals, and office buildings where cores get rotated for rekeying.
11) Do I need to specify a finish or size when ordering the Schlage L583-200?
No options to pick. The cam screw is sold as a single item under model L583-200, with no finish, length, or handing choices to specify.
How fast can I get the Schlage L583-200 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Schlage L583-200 come with a warranty?
Absolutely. The Schlage L583-200 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Schlage L583-200?
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