BEST 1E7440 Mortise Cylinder w...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$219.70
$149.30
BEST 1E7440 Mortise Cylinder, SFIC Housing

BEST 1E7440 Mortise Cylinder with SFIC Housing for Standard Mortise Applications

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Model: 1E7440C140RP3612
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$219.70
$149.30
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BEST 1E7440 Mortise Cylinder with SFIC Housing for Standard Mortise Applications

Professional SFIC Mortise Cylinder Component

The BEST 1E7440 mortise cylinder with SFIC housing is engineered for standard mortise lock applications requiring reliable interchangeable core functionality. This cylinder features machined brass or bronze bar stock construction with standard 1E-C4 cam configuration and diagonal set screw security mounting. The SFIC housing design allows integration into existing BEST master key systems while providing compatibility with other manufacturers' locks through alternative cam configurations.

Professional Features & Benefits

  • Precision Machined Construction: Manufactured from brass or bronze bar stock for exceptional durability and precise tolerances in commercial applications.
  • SFIC Interchangeable Core System: Features BEST interchangeable core technology for flexible key management and easy core changes without disassembly.
  • Enhanced Security Mounting: Diagonal set screw mounts in cylinder wall to securely hold the cylinder in housing, preventing unauthorized removal.
  • Standard 1E-C4 Cam Configuration: Includes standard cam for immediate compatibility with BEST mortise lock applications.
  • Cross-Manufacturer Compatibility: Can be adapted for use with other manufacturers' locks through alternative cam configurations and cylinder rings.
  • Master Key System Integration: May be masterkeyed into any existing BEST system for comprehensive access control management.
  • Multiple Finish Options: Available in a variety of finishes to match existing hardware and architectural requirements.

Technical Specifications

  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Electronic: No
  • 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 Subgroup: Parts and Accessories
  • Product Type: Parts and Accessories
  • Subcategory: Parts and Accessories

Installation & Operation

This mortise cylinder component is designed for use with compatible BEST 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
  • Government and Municipal Buildings
  • Multi-Tenant Residential Properties
  • Industrial and Warehouse Facilities
  • Retail Establishments

Why Choose BEST Quality?

BEST mortise cylinder components deliver professional-grade reliability with precision-machined brass or bronze construction engineered for demanding commercial applications. The SFIC interchangeable core system provides flexible key management capabilities while the diagonal set screw security mounting ensures dependable performance where secure access control is essential.

Manufacturer Resources

Key and Core Brochure

Product Specs

Lock Type:
Mortise
Commercial/Residential:
Commercial
Product Group:
Parts and Accessories
Product Subgroup:
Parts and Accessories
Product Type:
Parts and Accessories
Subcategory:
Parts and Accessories
Product Attribute:
Parts and Accessories
Electronic:
No
Parts and Accessories Type:
Replacement Parts
Product Category:
Parts and Accessories
Department:
Door Hardware

BEST 1E7440C140RP3612 – Frequently Asked Questions

1) Does the BEST 1E7440 mortise cylinder come with a core and keys?
No. The 1E7440 is the mortise cylinder housing built to take a BEST small format interchangeable core, so you supply the core separately and key it into your system. That is the point of the SFIC design: the core pulls with a control key and swaps without taking the cylinder or the lock apart. If you need an uncombinated core to go with it, the GMS 6-pin and 7-pin small format IC cores are sold as core only, with keys, pins, springs and caps not included.
2) Will a BEST 1E7440 cylinder work in a non-BEST mortise lock?
It can, but the cam decides it. The 1E7440 ships standard with the 1E-C4 cam for BEST mortise locks, and other manufacturers' mortise bodies need a different cam, and sometimes a cylinder ring for depth. Nine cam options are orderable: C140, C403, C405, C408, C413, C416, C417, C428 and C431. Pick the cam that matches the lock body you are putting it into, not the one that matches the door.
3) Can I key a BEST 1E7440 into the master key system already running in my building?
Yes, if that system is a BEST SFIC system. The 1E7440 housing accepts BEST interchangeable cores, and a core can be masterkeyed into any existing BEST system, so the mortise doors you retrofit fall under the same master and control keys as the rest of the facility. That is the usual reason a property manager or institutional locksmith standardizes on this housing rather than a fixed-cylinder mortise lock.
4) Is the 1E7440 a rim cylinder or a mortise cylinder? I need it for a mortise lock body.
Mortise. The 1E7440 is a threaded mortise cylinder with an SFIC housing, made for standard mortise lock applications, and it drives the lock through a cam rather than a tailpiece. A rim cylinder for an exit device is a different part and will not thread into a mortise case.
5) What is an alternative to the BEST 1E7440 mortise cylinder housing if I need a Yale cam instead of the standard BEST cam?
The BEST 1E7440 is a mortise cylinder with SFIC housing that ships with the standard 1E-C4 cam and can be ordered with cam options C140, C403, C405, C408, C413, C416, C417, C428 and C431. If the opening calls for a Yale cam specifically, the GMS ICM7-ST is a Best SFIC straight mortise housing in 7-pin with a Yale cam. Both accept a small format interchangeable core; the difference is the cam that drives the mortise lock body, so match the cam to the lock you are servicing.
6) What holds the cylinder in the lock so it cannot be twisted out?
A diagonal set screw seats in the cylinder wall and clamps it in the housing, which is what keeps the cylinder from being backed out or pulled from the outside. Standard practice on install is to seat that screw fully after the cam is oriented, since the cam position is what the lock body reads.
7) What is the difference between the BEST 1E7440 housing and a GMS SFIC mortise housing?
Both take a small format interchangeable core, but they are ordered differently. The 1E7440 is a BEST housing supplied with the 1E-C4 cam standard and eight cam alternatives for other lock bodies. The GMS ICM7-ST is a BEST-format straight mortise housing, 7-pin, that comes with a Yale cam, so it is the pick when the mortise body you are feeding takes Yale cam geometry and you do not want to source a cam separately.
8) I need to make up the height difference on a mortise cylinder installation - is the 1E7440 the right part or do I need collars?
The BEST 1E7440 is the cylinder and SFIC housing itself, with a diagonal set screw in the cylinder wall that holds it in the housing. It does not do the job of a spacer. For taking up space between the cylinder and the lock face on a thicker door or a deeper prep, the GMS KIT-PART04 is a collars kit. The two are complementary parts rather than substitutes - order the cylinder for the core function and the collars kit for the standoff.
9) Will the BEST 1E7440 work on a Corbin Russwin 2000 series mortise lock?
The BEST 1E7440 is a mortise cylinder with SFIC housing for standard mortise applications, and it can be adapted to other manufacturers' locks through alternative cam configurations and cylinder rings - the cam option list runs C140, C403, C405, C408, C413, C416, C417, C428 and C431. Confirm which cam that lock body requires before ordering. If what you actually need is the electrified operator for a Corbin Russwin 2000 series classroom mortise lever lock body, that is a different part: the ACSI 8500 Gemini operator, a classroom function unit in the 8500 series.
10) How do I match the finish when replacing cylinders across a building?
The BEST 1E7440 mortise cylinder is offered in 605 bright brass, 606 satin brass, 612 satin bronze, 613 satin bronze oil-rubbed, 622 matte black, 625 bright chrome, 626 satin chrome and 690 statuary dark bronze, so a property manager standardizing a fleet of doors can hold one finish across the job. Core-only parts such as the GMS IC6-26D and IC7-26D are supplied in a 26D satin finish, which matters less since the core sits inside the housing.
11) Is this an electronic or credential-based cylinder?
No, it is purely mechanical. The 1E7440 is a keyed brass or bronze mortise cylinder with no electronics, wiring or power requirement, which is why it is commonly specified for commercial openings that need key control without an access control head end. If you are building out electronic access, that is a separate product line entirely.
12) Do I need a cylinder collar or ring with this mortise cylinder?
Only if the cylinder sits proud of the trim or the lock case is deeper than the threads reach comfortably. The 1E7440 is noted as adaptable to other manufacturers' locks through alternative cams and cylinder rings, so rings are a fitting item rather than a standard inclusion. A collars kit such as the GMS KIT-PART04 covers that gap when you are dressing a cylinder to existing trim.
13) What should I order instead of the BEST 1E7440 if my glass door lock needs a keyed cylinder point?
The BEST 1E7440 is a commercial mortise-type cylinder, intended for a mortise lock prep in a door edge. It is not a glass door part. For a glass door application using a Codelocks CL4000 or CL4500 glass door lock, the matching strike component is the CDL-CL4000-RSB glass door strike box in the CL4000 series. The two address entirely different door constructions, so confirm the door type before substituting.
How fast can I get the BEST 1E7440C140RP3612 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 BEST 1E7440C140RP3612 come with a warranty?
Absolutely. The BEST 1E7440C140RP3612 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 BEST 1E7440C140RP3612?
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 BEST 1E7440C140RP3612 from ZenSupply?
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