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Commercial doors are used daily. In facilities such as office buildings, hospitals, schools, retail stores, and industrial sites, doors open and close hundreds of times before the day ends. That daily use means lock components wear over time.
Most facility managers and locksmiths do not replace the entire lock assembly. Instead, they order individual Schlage lock parts to get the lock operational again. This saves money and gets the door back in service faster.
The most significant aspect of maintaining commercial door hardware is having the right replacement parts available. Components such as strike plates, chassis assemblies, levers, screws, and tailpieces keep a lock operating correctly. When one component fails, replacing just that part allows the rest of the assembly to continue performing.
This guide covers the most frequently requested Schlage lock parts used on commercial doors, what each part does, and which Schlage series each part belongs to.
What Are Schlage Lock Parts?
Schlage lock parts are replacement components made to repair or maintain Schlage commercial lock systems. Instead of replacing the entire lock, a technician installs a single part and restores the lock to working condition.
A commercial lock assembly has several parts that work together: latch assemblies, mounting hardware, cylinders, levers, and chassis assemblies. When any one of these wears or breaks, the lock stops functioning properly.
Using the right Schlage lock parts delivers:
- Proper latch alignment
- Reliable door security
- Smooth locking and unlocking
- Longer life from existing door hardware
These parts are used by locksmiths, maintenance teams, contractors, and facility managers to keep commercial doors in proper operation. For a broader look at the range of Schlage cylindrical lock parts and assemblies, see the cylindrical lock parts guide.
Schlage Commercial Lock Series: Quick Reference
Schlage manufactures several distinct lock series for commercial applications. Each series uses its own replacement parts, and ordering parts for the wrong series results in parts that will not fit. Identify the series on the lock body before ordering any replacement component.
L-Series Mortise Lock
Application: Heavy institutional and commercial
Lock type: Mortise
Common parts: Latch assembly, armor front, case cover screw, chassis, cylinder trim
Browse: mortise lock parts catalog and top mortise locks guide
ND Series Cylindrical Lock
Application: Standard commercial and institutional
Lock type: Cylindrical (tubular chassis)
Common parts: Chassis, lever, tailpiece, latch, strike
Browse: cylindrical locks catalog
ALX Series Cylindrical Lock
Application: Commercial and light institutional
Lock type: Cylindrical
Common parts: Lever, latch assembly, chassis, rose trim
Browse: ALX Series parts catalog and cylindrical locks guide
B-Series Deadbolt
Application: Commercial deadbolt, single and double cylinder
Lock type: Deadbolt
Common parts: Deadbolt cylinder, strike plate, tailpiece, rose
Browse: B-Series parts, deadbolts catalog, and B-Series guide
Benefits of Using Schlage Lock Parts in Commercial Doors
Cost-Effective Hardware Maintenance
Replacing a worn-out part costs significantly less than purchasing an entire lock assembly. Because most commercial locks are designed to be durable, replacing specific components is the most cost-effective way to extend the life of installed hardware.
Faster Repairs
A maintenance team that replaces only one component gets the door back in service much faster than a full lock replacement. The building stays operational with minimal downtime.
Compatible With Existing Hardware
Genuine OEM replacement parts are made to fit existing lock assemblies exactly. Using the correct Schlage lock parts avoids compatibility issues and preserves the original hardware setup, including any existing access control or keying configuration.
Improved Security
A worn or broken lock part weakens door security. Installing a fresh OEM replacement restores the lock to full working condition and maintains the ANSI/BHMA certification of the original hardware. For fire-rated applications, OEM parts are required to preserve the UL listing. See the OEM vs aftermarket commercial door hardware parts guide for a full comparison.
Best Schlage Lock Parts for Commercial Door Hardware
Here are the most commonly ordered Schlage lock parts for commercial door repair and maintenance, with the part number, application, and what each component does.
L583-454 Case Cover Screw
The L583-454 Case Cover Screw holds the lock case cover in place on Schlage L-Series mortise assemblies. Without it, the inner lock mechanism lacks security and may become dislodged under normal use. These screws are frequently lost or stripped during servicing, which is why having a replacement available matters. Correct installation keeps the lock housing secure so internal parts stay protected under repeated door use.
- Secures the lock case cover within the assembly
- Helps protect internal lock components
- Designed for compatibility with Schlage L-Series mortise locks
- Ideal for commercial lock repair and maintenance
09-672 Latch, Auxiliary Latch, and Deadbolt Armor Front
The 09-672 Latch, Auxiliary Latch, and Deadbolt Armor Front is made for Schlage L-Series mortise locks used in commercial settings. It keeps the latch engaging properly and adds reinforcement to the faceplate area. High-traffic doors put significant stress on latch assemblies, and the armor front wears down over time. Replacing this component keeps the latch aligned and the mechanism moving smoothly. For the full range of L-Series components, browse the mortise locks vs cylindrical locks comparison guide.
- Reinforces the latch and deadbolt area
- Maintains smooth latch engagement
- Designed for Schlage L-Series mortise lock assemblies
- Suitable for commercial door installations
03-230 RHO Rhodes Closed Lever
The 03-230 RHO Rhodes Closed Lever is made for commercial lock hardware that handles regular daily traffic. The lever is the component people grip every time they walk through a door, so it takes more use than almost any other part on the lock. Over time, levers work loose or stop returning to position cleanly. Replacing this component restores smooth operation and keeps the hardware presentable.
- Designed for frequent commercial door use
- Supports smooth door operation
- Durable lever construction
- Compatible with Schlage commercial hardware
47268754 Chassis Assembly Exterior 170
The 47268754 Exterior Chassis Assembly is one of the main structural parts in a Schlage cylindrical lock system. It holds the internal components that control latch movement, lever function, and the locking action. When the chassis wears or becomes damaged, the entire lock begins to fail. Installing authentic Schlage replacement components such as this chassis assembly ensures the replacement fits with the existing hardware without modification. For the full range of cylindrical lock chassis and parts, see the Schlage ALX Series guide.
- Supports the core lock mechanism operation
- Restores the structural integrity of the lock system
- Designed for commercial door hardware
- Helps extend the lifespan of installed locks
N523-127 Schlage FSIC Tailpiece
The FSIC (Full-Size Interchangeable Core) Tailpiece is used in interchangeable core lock systems. It links the cylinder to the internal lock mechanism and transmits the key's rotation to the latch or deadbolt. When the tailpiece fails, the key turns without engaging the lock. Replacing it restores full cylinder operation. FSIC systems allow the cylinder core to be changed without removing the lock from the door, which is a significant advantage in facilities with many doors on the same master system. Browse the Schlage key systems guide for more on interchangeable core configurations.
- Connects cylinder rotation to the lock mechanism
- Supports FSIC interchangeable core systems
- Ensures proper key operation
- Suitable for commercial locking systems
B302-041 Rose Turn
The B302-041 Rose Turn is part of the lock trim assembly and allows people to lock or unlock the door from the inside without a key. In offices and facilities, the rose turn gets used many times throughout the day. That regular use adds up and the part eventually needs replacing. A reliable replacement restores the manual locking function. Browse top Schlage deadbolt parts at SecurityParts.com for rose turn components and compatible trim assemblies.
- Supports interior locking operation
- Provides manual control of lock mechanism
- Designed for commercial lock trim assemblies
- Durable construction for frequent use
09-060 KIL Tailpiece
The 09-060 KIL Tailpiece is used in key-in-lever lock configurations. It transmits motion between the key cylinder and the internal lock components. When this component fails, turning the key does not engage the locking mechanism. Replacing the worn tailpiece with the correct component restores proper locking operation and ensures the cylinder works reliably.
- Transfers key rotation to lock mechanism
- Maintains reliable locking engagement
- Compatible with key-in-lever systems
- Essential for cylinder operation
10-025 ANSI Strike (4-7/8" x 1-1/4")
The ANSI Strike 10-025 is installed on the door frame and receives the latch every time the door closes. Repeated contact causes the strike plate to wear and sometimes become misaligned. When this happens, the door does not close properly and door security is affected. Replacing the ANSI strike restores proper latch engagement and keeps the door closing securely. The 10-025 meets the ANSI/BHMA A156.2 standard for cylindrical lock strikes and is one of the most commonly replaced components across all commercial Schlage lock installations. For full replacement guidance, see the mortise lock parts guide.
- Reinforces the latch engagement area on the door frame
- Maintains proper door alignment
- Supports secure door closure
- Suitable for commercial door frames
How to Identify and Order the Correct Schlage Lock Parts
The first step to finding the correct Schlage lock parts is identifying the lock series and the specific part that needs replacement. Getting this right before ordering prevents delays and return shipping costs.
- Identify the Schlage lock series The series name appears on the lock chassis or product label. L-Series is a mortise lock (rectangular body in the door edge). ND Series and ALX Series are cylindrical locks (round chassis). B-Series is a deadbolt. If the label is worn, note the door thickness, lock function, and lever style and call SecurityParts.com at 845-935-0301.
- Confirm the lock function code Schlage assigns function codes to each lock (storeroom, office, classroom, entrance, etc.). The function code affects which latch, chassis, and cylinder components are compatible. The function code appears in the full model number on the product label.
- Get the exact part number Always confirm the exact part number before placing an order. Ordering by description alone risks receiving the wrong part. If the part number on the worn component is still legible, use that number directly. Otherwise, use the series parts diagram to identify the correct number.
- Check the installation environment High-traffic doors wear out faster. On doors with over 500 daily cycles, latch bolts, dogging components, and lever trim need more frequent replacement. Consider ordering a spare set of the most frequently replaced parts for high-use openings.
- Inspect the full assembly before ordering One failing part often signals that adjacent components are also near the end of their service life. Check the complete lock assembly before finalizing the order to avoid a second maintenance call in the same week.
OEM vs Generic Schlage Lock Parts: Why It Matters
Not every Schlage lock part on the market is made by or to the standard of the original manufacturer. Generic parts may appear similar but are produced to lower tolerances without ANSI/BHMA certification testing.
On standard interior doors in low-security applications, a generic part may function adequately. But in commercial settings the cost of failure is higher. A generic latch bolt that fails on a hospital corridor door or a school entrance creates both a security problem and a liability issue. A generic ANSI strike that misaligns after three months means a repeat service call.
On fire-rated doors, generic parts are not acceptable. The UL listing on a fire-rated lock assembly is based on the specific tested combination of components. Substituting a non-OEM part voids that listing. If the door is inspected for NFPA 80 compliance and a non-OEM part is found on a fire-rated lock, the door fails the inspection.
SecurityParts.com stocks genuine OEM Schlage replacement parts. Every part in the catalog is made to the original specification. For a full explanation of the OEM vs generic decision in commercial hardware maintenance, see the OEM vs aftermarket commercial door hardware parts guide linked in the benefits section above.
Why Security Parts for Schlage Lock Parts
SecurityParts.com has supplied commercial door hardware parts since 2001. The Schlage catalog covers every major series, including L-Series mortise locks, ND Series cylindrical locks, ALX Series cylindrical locks, B-Series deadbolts, and MA Series mortise locks, with OEM replacement parts and same-day shipping from US warehouses.
- Parts organized by series and part number: Find the exact component by model number without searching through unrelated inventory.
- Pre-order identification support: Call 845-935-0301 to confirm the correct part for your specific lock before the order ships.
- OEM parts only: Every Schlage part in the catalog is genuine OEM, maintaining ANSI/BHMA certification and UL listing integrity on fire-rated hardware.
- Parts diagrams available: Diagrams for major Schlage series help identify exact part numbers from a visual reference.
- Free shipping on orders $300 and over: Same-day shipping on stocked OEM parts.
Browse Schlage lock parts, cylindrical lock parts, mortise lock parts, and deadbolt parts listed in the catalogs above at SecurityParts.com. Contact the team at 845-935-0301 or the SecurityParts.com contact page.
Conclusion
Keeping commercial doors secure means having the right replacement parts available when something wears out. Using genuine Schlage lock parts lets facilities get locks working again fast without spending money on full replacements.
Whether it is a strike plate, chassis assembly, tailpiece, or lever, the right OEM part keeps every door operating safely and reliably. For fire-rated doors, OEM parts are required to maintain the UL listing and pass NFPA 80 inspection.
SecurityParts.com makes it easy to find the exact Schlage lock parts needed for any commercial door hardware maintenance job. Parts are organized by series, part numbers are confirmed, and same-day shipping is available on stocked components. Call 845-935-0301 or browse the complete commercial door hardware parts catalog at SecurityParts.com.