Schlage C604-381 Throw Member ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$24.73
Schlage C604-381 Throw Member Replacement Part for AL Series SFIC Cylinders

Schlage C604-381 Throw Member Replacement Part for AL Series SFIC Cylinders

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Model: C604-381

In Stock (leaves warehouse same day if ordered before 3pm ET)

$24.73
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Schlage C604-381 Throw Member Replacement Part for AL Series SFIC Cylinders

The Schlage C604-381 is a purpose-built throw member replacement part designed for use with Schlage AL Series locks equipped with Small Format Interchangeable Core (SFIC) cylinders. As a genuine Schlage component, this part ensures proper fit, function, and long-term reliability when servicing or restoring AL Series commercial locksets. Ideal for facility maintenance teams, locksmiths, and security professionals who require OEM-quality replacement hardware for Schlage AL Series SFIC applications.

Key Features

  • Genuine Schlage Component: Manufactured as an authentic Schlage part, ensuring precise compatibility and reliable performance within AL Series SFIC locksets.
  • AL Series SFIC Compatibility: Specifically engineered for use with Schlage AL Series locks configured with Small Format Interchangeable Core cylinders, maintaining the integrity of the original hardware assembly.
  • Replacement Part Precision: Functions as a direct replacement throw member, restoring proper latching and locking mechanics to the lock assembly without modification.
  • Commercial-Grade Construction: Built to the same standards as the original Schlage AL Series components, supporting demanding commercial use environments.
  • Simplified Serviceability: Allows technicians to restore full lock function by replacing only the affected throw member component rather than replacing the entire lockset assembly.

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: C604-381
  • Features: Schlage Parts

Typical Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Government and Municipal Buildings
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties

Why Schlage C604?

Schlage AL Series components are engineered for commercial-grade performance and durability, making genuine replacement parts like the C604-381 the trusted choice for maintaining lock integrity. By using authentic Schlage parts, facility managers and security professionals ensure that repaired locksets continue to meet the original performance standards of the AL Series platform.

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:
C604-381
Features:
Schlage Parts

Schlage C604-381 – Frequently Asked Questions

1) What does the Schlage C604-381 throw member actually do inside an AL Series lock?
The C604-381 is the throw member that transfers rotation from the small format interchangeable core to the lock mechanism in Schlage AL Series locksets. When it wears or breaks, the key turns but the latch or locking function doesn't follow. Swapping in the throw member restores the latching and locking mechanics without touching the rest of the lockset, so a technician repairs the lock instead of replacing the whole assembly.
2) Will the Schlage C604-381 work in an AL Series lock that has a standard Schlage C keyway cylinder instead of an SFIC core?
No. The C604-381 is built for AL Series locks configured with a Small Format Interchangeable Core. A conventional key-in-lever cylinder uses its own tailpiece arrangement, so this part is the wrong component for that build. Order it only when the lock is running an SFIC core.
3) My key turns in the Schlage AL lever but the latch doesn't retract. Do I need a new lockset?
Not necessarily. On an AL Series lock with an SFIC core, that symptom usually points at the throw member, the part that carries the core's rotation into the lock. The C604-381 is the direct replacement for it and restores function without modification to the lockset, so replacing that one piece is the cheaper repair before you pull and re-prep the door for a whole new lock.
4) Does the Schlage C604-381 come with an interchangeable core, or do I order the core separately?
The C604-381 is a throw member replacement part for Schlage AL Series locks configured with Small Format Interchangeable Core cylinders - it is the driving component that transfers core rotation to the lock mechanics, not the keyed core itself. If you also need the core, a small format interchangeable core such as the BEST 1C Series standard 5-pin cylinder core or the BEST Peaks 1CB 150 Series interchangeable core cylinder is the keyed piece that drops into the housing. Order the throw member when the lock will not retract with a good core installed, and order the core when the keying is what needs to change.
5) My AL Series lock is keyed conventionally, not SFIC - will the C604-381 work?
No. The C604-381 is engineered specifically for AL Series locks configured with Small Format Interchangeable Core cylinders, so it matches the SFIC core geometry rather than a conventional key-in-lever plug. For a conventionally keyed key-in-lever opening, a replacement key-in-knob or lever cylinder such as the Kaba Ilco 1599 key-in-knob replacement cylinder or the Kaba Ilco 1539 Series key-in-knob/lever universal cylinder is the part that addresses that style of trim.
6) Is the C604-381 an OEM Schlage part or an aftermarket copy?
It is a genuine Schlage component, catalogued under Schlage Parts, so the fit and the tolerances match the original AL Series assembly. For facilities standardized on Schlage, that matters: an aftermarket throw member that sits a hair off can bind the core or leave the retainer short of engagement.
7) Does the C604-381 include a core or a key?
No. It is a replacement throw member only, a mechanical part, not a cylinder core and not keyed. If you need the interchangeable core itself for an SFIC opening, that is a separate item, for example a BEST 1C Series standard 5-pin core or a 1CB 150 Series interchangeable core.
8) Can I use a Medeco or Kaba Ilco replacement cylinder instead of the Schlage C604-381?
Those are not substitutes. Parts like the Kaba Ilco 1599 key-in-knob replacement cylinder or the Medeco 1065140 5-pin retrofit cylinder are complete keyed cylinders that replace a cylinder in a lock, whereas the C604-381 is an internal throw member for a Schlage AL Series SFIC build. If your AL lever's throw member has failed, no aftermarket cylinder addresses it; if instead you want to change the keying, a replacement cylinder is the right category.
9) I need a Schlage C keyway cylinder for a mortise lock - is the C604-381 what I want?
It is not. The C604-381 is a commercial replacement throw member for the AL Series cylindrical platform, with no keyway and no plug. For a mortise application on the Schlage C keyway, the Detex MC65 is a 1-1/8 inch 6-pin mortise cylinder in Schlage C keyway. If the mortise lock takes a large format interchangeable core, the Corbin Russwin 1080 Grade 1 Series 1-1/2 inch LFIC mortise cylinder is built 6-pin with an A01 cloverleaf cam for Schlage L9000 mortise locks.
10) Is the C604-381 a substitute for a rim cylinder on an exit device?
No - the C604-381 serves the AL Series cylindrical lockset and does not mount to a rim device. Rim applications call for a rim cylinder housing such as the Corbin Russwin 3070 6-pin rim cylinder housing with a 1-7/8 inch tailpiece, or the BEST 12E Series dummy rim cylinder at 1-5/32 inch diameter where a non-keyed filler is wanted.
11) If I want a higher security core behind the same AL Series throw member, what core should I look at?
The C604-381 throw member stays the same; what changes is the small format core you seat in front of it. The BEST 1CDF is a drill resistant preferred patented interchangeable core in 7-pin brass, 150 Series, for openings where key control and attack resistance matter. The BEST 1C Series standard 5-pin core is the plain-keyed alternative in the same interchangeable format.
12) Is the Schlage C604-381 rated for commercial door traffic or is it a residential-duty part?
Commercial. The throw member is built to the same standard as the original AL Series components, which is Schlage's commercial line, and it's used in offices, schools, healthcare, government buildings, retail, warehouses and multi-tenant residential.
13) I'm standardizing an SFIC keying system across a building. Where does a part like the C604-381 fit in?
Think of it as the service part that keeps the existing AL Series openings on your SFIC program. The interchangeable core is what gets rekeyed and rotated between doors; the throw member is the fixed mechanical link inside the lock that lets that core drive the lock. Stock a few with your core inventory, so a failed lever doesn't force you off the standard onto a conventional cylinder.
How fast can I get the Schlage C604-381 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. 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 C604-381 come with a warranty?
Absolutely. The Schlage C604-381 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 C604-381?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Schlage C604-381 from ZenSupply?
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