Detex MC65 Mortise Cylinder wi...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$62.64
Detex MC65 Mortise Cylinder with Schlage C Keyway 1-1/8" 6-Pin Commercial Grade

Detex MC65 Mortise Cylinder with Schlage C Keyway 1-1/8" 6-Pin Commercial Grade

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Model: MC65

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

$62.64
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Detex MC65 Mortise Cylinder with Schlage C Keyway 1-1/8" 6-Pin Commercial Grade

Professional Mortise Cylinder Replacement Component

The Detex MC65 mortise cylinder features Schlage "C" keyway compatibility with 1-1/8" threading and 6-pin construction, keyed to 5-pin configuration for commercial lock applications. This replacement cylinder provides reliable security integration with existing mortise lock systems requiring Schlage C keyway compatibility.

Professional Features & Benefits

  • Precise Threading: 1-1/8" threading ensures proper fit and secure installation in compatible mortise lock bodies.
  • Schlage C Keyway Compatibility: Standard Schlage "C" keyway design allows integration with existing key systems and master key configurations.
  • 6-Pin Construction: 6-pin cylinder body keyed to 5-pin operation provides enhanced security options and key control flexibility.
  • Commercial-Grade Design: Engineered for demanding commercial applications where reliable lock cylinder performance is essential.
  • Replacement Part Compatibility: Designed as direct replacement component for compatible mortise lock systems requiring cylinder service or upgrade.

Technical Specifications

  • Commercial/Residential: Commercial
  • Lock Type: Mortise
  • Parts and Accessories Type: Replacement Parts
  • Product Attribute: Parts and Accessories
  • Product Category: Parts and Accessories
  • Product Group: Parts and Accessories
  • Product Model: MC65
  • Product Subgroup: Cylinders
  • Product Type: Cylinders
  • Series: MC65 Series
  • Subcategory: Cylinder

Installation & Operation

This replacement cylinder is designed for use with compatible mortise lock systems. Refer to the parent device installation instructions and manufacturer documentation for proper integration. Ensure compatibility with existing hardware before installation.

Professional Applications

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

Why Choose Detex Quality?

Detex cylinder products deliver professional-grade reliability with precision-engineered construction for demanding commercial applications. The MC65 series provides dependable security performance where consistent lock operation is essential for facility access control and key system management.

Manufacturer Resources

Product Specs

Subcategory:
Cylinder
Series:
MC65 Series
Product Group:
Parts and Accessories
Product Subgroup:
Cylinders
Product Type:
Cylinders
Commercial/Residential:
Commercial
Lock Type:
Mortise
Parts and Accessories Type:
Replacement Parts
Product Attribute:
Parts and Accessories
Product Model:
MC65
Product Category:
Parts and Accessories
Department:
Door Hardware

Detex MC65 – Frequently Asked Questions

1) Will a Detex MC65 mortise cylinder work in my mortise lock if my building is keyed to Schlage C?
Yes. The MC65 is cut for the Schlage "C" keyway, so it drops into an existing Schlage C key system and can be brought into a master key plan already running on that keyway. That is the whole point of the part: you service or swap a cylinder in a mortise lock body without breaking the key system the rest of the doors run on.
2) What thread size is the Detex MC65 mortise cylinder, and will it thread into a standard mortise lock body?
The MC65 uses 1-1/8 inch threading, which is the standard mortise cylinder thread found on commercial mortise lock bodies. Measure the cylinder you are pulling out: if it threads in at 1-1/8 inch, the MC65 threads into the same hole. Cylinder length still has to suit your door thickness and escutcheon, so match the length of the one you removed.
3) Is the MC65 a mortise cylinder or a rim cylinder? I need the right one for my exit device.
Mortise. The MC65 threads into a mortise lock body and is not a rim cylinder, so it will not mount behind a rim exit device. For a rim application look at the Schlage Commercial 20-021 with a vertical tailpiece cam or the 20-022 with a horizontal tailpiece cam, or the Corbin Russwin 3070 6-pin rim housing with a 1-7/8 inch tailpiece. Rim and mortise cylinders are not interchangeable, so identify which one is on the door before ordering.
4) I need an interchangeable core instead of a conventional cylinder. Is the MC65 the right part?
No. The MC65 is a conventional keyed mortise cylinder, not an interchangeable core, so you cannot pull the core with a control key. If you are standardizing a facility on removable cores, look at the BEST 1C Series standard 5-pin core, the BEST Peaks 1CB 150 Series interchangeable core, or the BEST 1CDF drill-resistant patented 7-pin core. For a Schlage C keyway full-size interchangeable core, the Schlage 20-057-C FSIC core is C keyway in 643E aged bronze. For an LFIC mortise housing, the Corbin Russwin 1080 is a 1-1/2 inch 6-pin LFIC mortise cylinder with an A01 cam for Schlage L9000 mortise locks.
5) My lock is a knob or lever, not a mortise lock. Will the Detex MC65 fit it?
No. The MC65 threads into a mortise lock body and will not go into a key-in-knob or key-in-lever chassis, which uses a completely different cylinder format. For those, the Kaba Ilco 1539 Series is a key-in-knob and lever universal cylinder, the 1579 is a knob and lever cylinder for Sargent, and the 1599 is a key-in-knob replacement cylinder. Falcon offers the A23161-05 G key-in-lever cylinder in a 6-pin G keyway, keyed different with two cut keys. For a key-in-deadbolt, Kaba Ilco 1549. Identify the lock chassis first; the cylinder follows from it.
6) I need a longer mortise cylinder than 1-1/8 inch for a thicker door prep. What are my options?
The Detex MC65 is threaded at 1-1/8 inch, which suits a standard mortise body prep. For deeper preps, the Corbin Russwin 1000 Grade 1 mortise cylinder comes in a 1-1/2 inch length with an A02 straight cam, and the Corbin Russwin 1070 Grade 1 housing is a 1-1/4 inch 6-pin mortise housing with an A01 cloverleaf cam. Measure from the face of the lock body to the outside of the trim before choosing, since cylinder length and cam style both have to match the lock case.
7) What is the closest mortise cylinder equivalent to the Detex MC65 if I need Schlage keyway compatibility in a Schlage L9000 mortise lock?
The Corbin Russwin 1080 is a 1-1/2 inch large format interchangeable core mortise cylinder, 6-pin, built for Schlage L9000 mortise locks with an A01 cloverleaf cam. The Detex MC65 is a fixed mortise cylinder with a Schlage C keyway and 1-1/8 inch threading, 6-pin construction keyed to 5-pin. The functional difference is core format: the MC65 is a one-piece cylinder that is rekeyed by disassembly, while the 1080 accepts an interchangeable core that a facility can pull and swap with a control key. Pick the 1080 where a site already runs LFIC key control, and the MC65 where the mortise body takes a conventional threaded cylinder.
8) What mortise cylinder carries an ANSI grade rating if my spec requires one?
The Adams Rite 4036 mortise cylinder is a five-pin cylinder listed as Grade 1 with a 1/2 inch minimum door thickness, and it belongs to the 4036 Series. The Detex MC65 is a 6-pin mortise cylinder keyed to 5-pin with a Schlage C keyway and 1-1/8 inch threading, built for commercial mortise lock service. If the drawing calls out a graded cylinder by name, the 4036 answers that line directly; if the requirement is keyway match to an existing Schlage C system, the MC65 is the one that keys into it.
9) Can I use a Schlage 20-021 or 20-022 rim cylinder in place of the Detex MC65?
No. The Schlage 20-021 and 20-022 are rim cylinders, 6-pin, supplied with two keys and differing from each other by tailpiece orientation - the 20-021 uses a vertical tailpiece cam and the 20-022 a horizontal one. A rim cylinder mounts through the door and is retained from the inside face, driving the device with a tailpiece. The Detex MC65 is a mortise cylinder that threads into the lock body at 1-1/8 inch and turns a cam. The two are not interchangeable; match the cylinder to whether the device takes a threaded mortise cylinder or a rim cylinder before ordering.
10) The Detex MC65 says 6-pin keyed to 5-pin. What does that actually mean for my key system?
The cylinder body is drilled for six pin chambers but comes keyed as a 5-pin cylinder. In practice it operates on a standard 5-pin Schlage C key today, and the sixth chamber is there if your locksmith later needs the extra depth for a deeper master key system or tighter key control. If your facility is already running 6-pin, tell your locksmith so it gets pinned to match rather than used as shipped.
11) Can I put the MC65 mortise cylinder in an aluminum storefront door with an Adams Rite deadlock?
Only if the lock body takes a standard 1-1/8 inch threaded mortise cylinder, which many Adams Rite deadlocks do. Where the MC65 does not fit is the cylinder pull applications: the Adams Rite 4024 pull with trim plate and the 4025 five-pin pull with through-screws are built specifically for the MS1847 deadlock/deadlatch, and the 4026 five-pin pull is for the 5017 wood door deadlock. Those are pull-and-cylinder assemblies, not a bare cylinder. If you want a bare mortise cylinder in that family, the Adams Rite 4036 is a Grade 1 five-pin mortise cylinder with a 1/2 inch minimum door thickness.
12) Our campus is standardized on BEST interchangeable cores. Is the Detex MC65 the right cylinder for us?
Only where the opening takes a conventional threaded cylinder. The Detex MC65 is a fixed 6-pin mortise cylinder keyed to 5-pin on a Schlage C keyway, so it is rekeyed at the bench rather than swapped at the door. A site running interchangeable core key control uses cores instead: the BEST 1C Series standard 5-pin cylinder core, the BEST Peaks 1CB 150 Series interchangeable core cylinder, or the BEST 1CDF drill resistant preferred patented interchangeable core, a 7-pin brass 150 Series core. Cores are pulled and replaced with a control key, which is what makes turnover rekeying fast across a large door count.
13) Is there a Schlage C keyway cylinder besides the Detex MC65 if I need one that accepts an interchangeable core?
Yes. The Schlage Commercial 20-057-C is a full size interchangeable core cylinder in the C keyway, finished 643E aged bronze, and the 20-057 is a 6-pin FSIC rim cylinder with a convertible tailpiece cam supplied with two keys. Both keep you on the same C keyway family as the Detex MC65, which uses a Schlage C keyway with 6-pin construction. The difference is format - the MC65 threads into a mortise lock body at 1-1/8 inch, while the FSIC parts are rim style and hold a removable core.
14) The Detex MC65 is 6-pin keyed to 5-pin. Which comparable cylinders are natively 5-pin and which are 6-pin?
The Detex MC65 has a 6-pin body keyed to 5-pin operation, which leaves the sixth chamber available if a key system is later expanded. Among mortise and rim alternatives, the Adams Rite 4036 mortise cylinder is a five-pin cylinder, and the Adams Rite 4025 and 4026 cylinder pulls are five pin tumbler. On the 6-pin side, the Corbin Russwin 1070 is a 6-pin mortise housing, the Corbin Russwin 3070 is a 6-pin rim cylinder housing with a 1-7/8 inch tailpiece, and the Schlage 20-021 and 20-022 rim cylinders are 6-pin. Pin count has to match the bitting depth of the existing key system for the cylinder to key into it.
15) What cylinder do I order for a residential-style handleset or deadbolt instead of the Detex MC65?
The Detex MC65 is a commercial mortise cylinder. For handleset and deadbolt retrofits, the Medeco 1075127 is a 5-pin rim type lazy motion single cylinder for handlesets and deadbolts, the 1012040 is a 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts, the 1065244 is a 5-pin rim lazy motion rim type cylinder with an Emtek tailpiece, and the 1065140 is a 5-pin retrofit cylinder for the Arrow JL interconnected lock and Emtek handleset and deadbolt outside cylinder. The Emtek CY4 cylinder is sold each for Emtek trim. Those are keyed to the lock brand's tailpiece, which a threaded mortise cylinder does not provide.
16) Is the Detex MC65 cylinder rated for commercial use or is it a residential part?
Commercial. It is built as a replacement cylinder for commercial mortise lock systems, the kind of traffic you see in office buildings, schools, healthcare, retail and multi-tenant residential. It is a service part, not a complete lock: you are buying the cylinder that goes into a lock body already hung on the door.
17) How many versions of the Detex MC65 cylinder are there, and is there anything to specify when ordering?
One configuration: model MC65, Schlage C keyway, 1-1/8 inch thread, 6-pin body keyed to 5-pin. There are no keyway or pin-count options to choose between. What you do need to sort out separately is keying: if it has to work on an existing master key system, it goes to your locksmith to be pinned to your bitting, and the cam has to match what your mortise lock body accepts.
18) I need a cylinder that fills the hole but does not key. Is the Detex MC65 the wrong part?
Yes, for a non-keyed opening. The Detex MC65 is a functioning 6-pin mortise cylinder on a Schlage C keyway, so it operates the lock. Where a door needs the cylinder appearance without key function, the BEST 12E Series dummy rim cylinder with a 1-5/32 inch diameter fills a rim prep without operating anything. Confirm whether the prep is a threaded mortise hole or a rim cylinder hole, since the 12E is a rim format part.
19) Which cam should I match when replacing a mortise cylinder like the Detex MC65?
Cam style is set by the lock case, not by the cylinder, so it has to be confirmed against the device. Among mortise cylinders in the same class, the Corbin Russwin 1000 in 1-1/2 inch length ships with an A02 straight cam, while the Corbin Russwin 1070 1-1/4 inch 6-pin housing and the Corbin Russwin 1080 1-1/2 inch LFIC cylinder both use an A01 cloverleaf cam, the 1080 specifically as a Schlage L cam for L9000 locks. Pull the existing cylinder and compare the cam shape and throw before ordering the replacement.
How fast can I get the Detex MC65 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 Detex MC65 come with a warranty?
Absolutely. The Detex MC65 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 Detex MC65?
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 Detex MC65 from ZenSupply?
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