BEST 1E7428 Standard 1-3/4" Mo...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$189.60
$118.32
BEST 1E7428 Standard 1-3/4" Mortise Cylinder, 7-Pin SFIC Prep Less Core, C4 Straight Cam, For Use With 40/45H

BEST 1E7428 Standard 1-3/4" Mortise Cylinder, 7-Pin SFIC Prep Less Core, C4 Straight Cam, For Use With 40/45H

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Model: 1E7428C4RP3626
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$189.60
$118.32
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BEST 1E7428 Standard 1-3/4" Mortise Cylinder, 7-Pin SFIC Prep Less Core, C4 Straight Cam, For Use With 40/45H

The BEST 1E7428 Standard 1-3/4" Mortise Cylinder is a heavy-duty Small Format Interchangeable Core (SFIC) cylinder housing engineered for compatibility with BEST 40H and 45H Series heavy-duty mortise locksets. Machined from solid bar stock, this housing allows facilities to integrate mortise locks directly into a BEST master key system while maintaining quick rekeying capability.

Product Overview

The 1E7428 cylinder features an extended 1-3/4" body length (designated by suffix -28), making it suited for thicker doors, wide escutcheon trim, or specialized keying setups. Configured for a 7-pin SFIC prep, it accepts standard 6-pin or 7-pin BEST interchangeable cores.

Equipped with the standard 1E-C4 straight cam, this housing directly operates the bolt mechanism in BEST 40H/45H series mortise locks and compatible hardware. It ships less core (housing only), allowing core integration or rekeying without removing the lock case.

Key Features

  • Heavy-Duty Construction: Machined from solid brass or bronze bar stock to ensure long-term durability in high-traffic commercial environments.

  • SFIC Compatibility: Accepts all standard 6-pin and 7-pin Small Format Interchangeable Cores for immediate integration into existing BEST key control systems.

  • Standard C4 Straight Cam: Factory-equipped with the C4 straight cam, engineered specifically to drive BEST 40H and 45H series mortise lock mechanisms.

  • Fast Rekeying & Maintenance: Core changes take seconds using a control key, eliminating the need to disassemble the door trim or mortise lock case.

  • Enhanced Set-Screw Security: Features a diagonal set-screw mounting design that anchors the cylinder firmly within the lock body to resist force and twisting.

  • Standard Ring Package Included: Ships with the RP3 trim ring package to ensure a flush, proper fit against the door face or trim escutcheon.

Product Specifications

Specification Details
Manufacturer BEST (dormakaba)
Model / Series 1E Series (1E7428)
Cylinder Type SFIC Mortise Cylinder Housing
Cylinder Length 1-3/4" (44.5 mm)
Cylinder Diameter 1-5/32" standard mortise thread
Core Capacity 7-Pin SFIC Prep (Less Core / Housing Only)
Cam Type C4 Straight Cam (Standard Mortise Cam)
Lock Compatibility BEST 40H / 45H Series Mortise Locks
Base Material Solid Brass or Bronze bar stock
Door Thickness Fits 1-7/8" to 2-1/2" thick doors (varies with trim)
Standard Finishes 626 (Satin Chrome), 606 (Satin Brass), 612 (Satin Bronze), 613 (Oil-Rubbed Bronze), 625 (Bright Chrome)

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 1E7428C4RP3626 – Frequently Asked Questions

1) Does the BEST 1E7428 mortise cylinder come with a core?
No core is included. The 1E7428 is the housing only, prepped for a 7-pin small format interchangeable core, so you supply a BEST SFIC core (6-pin or 7-pin both seat in it) keyed to your system. Core swaps are done with a control key without pulling the trim or the mortise case.
2) Which locks does the BEST 1E7428 cylinder fit?
It is built for BEST 40H and 45H Series heavy-duty mortise locksets. The factory C4 straight cam is the cam those lock bodies expect, so it drives the bolt mechanism directly without a cam change.
3) What door thickness does a 1-3/4 inch mortise cylinder suit?
The extended 1-3/4 inch (44.5 mm) body suits doors in the 1-7/8 to 2-1/2 inch range, though trim depth shifts that. On a standard 1-3/4 inch commercial door with ordinary trim, this length will stand proud; you want a shorter housing there.
4) What is a comparable 7-pin SFIC straight mortise cylinder housing if the BEST 1E7428 is not what I need?
The GMS ICM7-ST is a Best-compatible SFIC straight mortise housing in 7-pin configuration, supplied with a Yale cam. The BEST 1E7428 is a 1-3/4 inch long 7-pin SFIC mortise cylinder housing with the C4 straight cam, which is the cam engineered to drive BEST 40H and 45H series mortise locks. If your lock case needs the BEST C4 cam specifically, the cam is the deciding difference between the two.
5) The BEST 1E7428 ships less core - what core do I order with it?
The 1E7428 is a housing only and accepts standard 6-pin or 7-pin small format interchangeable cores. For an uncombinated core to pin yourself, the GMS IC7-26D is a 7-pin small format IC core sold core-only without keys, pins, springs or caps, and the GMS IC6-26D is the same thing in 6-pin. Order the core separately from the housing in either case.
6) Why would I order the -28 length instead of a standard mortise cylinder?
The -28 suffix is the 1-3/4 inch body. You pick it for thick doors, deep escutcheon trim that sets the cylinder back from the lock case, or keying setups that need the extra reach. Match the length to the distance from the door face to the lock cylinder bore, not to the door alone.
7) Do I need a separate trim ring with this BEST SFIC mortise housing?
No. The RP3 trim ring package ships with the cylinder so it seats flush against the door face or escutcheon. The threads are the standard 1-5/32 inch mortise diameter, and the cylinder is held by a diagonal set screw in the lock body.
8) Where do I get cores to fill a 7-pin SFIC mortise housing?
Any BEST-format small format interchangeable core drops in. If you pin your own, the GMS IC7-26D is a 7-pin small format IC core sold un-combinated (no keys, pins, springs or caps), and the GMS IC6-26D is the 6-pin version, which also seats in a 7-pin prep.
9) If my cylinder sits proud of the trim, do I need a different housing length or just a collar?
The BEST 1E7428 ships with the RP3 trim ring package to sit flush against the door face or escutcheon, and its 1-3/4 inch body is the length intended for thicker doors and wide escutcheon trim. If you already have the correct housing length and only need to take up a gap, the GMS KIT-PART04 collars kit is a cylinder collar assortment that addresses fit at the trim rather than changing the cylinder body.
10) Will a 6-pin core work in the BEST 1E7428, or do I have to use a 7-pin?
The 1E7428 is machined with a 7-pin SFIC prep and accepts standard 6-pin or 7-pin BEST interchangeable cores, so a 6-pin core such as the GMS IC6-26D will seat in it. A 7-pin core like the GMS IC7-26D uses the full depth of the prep. Both are small format cores; match whichever pin count your existing key system is built on.
11) What finishes can I get the BEST 1E Series mortise cylinder housing in?
Ten: 605 bright brass, 606 satin brass, 611 bright bronze, 612 satin bronze, 613 dark oxidized satin bronze oil rubbed, 619 satin nickel, 622 flat black, 625 bright chrome, 626 satin chrome and 690 dark bronze. For a building standardized on satin chrome lever trim, 626 is the match.
12) Is the BEST 1E7428 suitable for high-traffic commercial openings?
It is a commercial mortise-type part, machined from solid brass or bronze bar stock for high-traffic service. It is purely mechanical with no electronic components, so it carries no power or wiring requirement.
13) Is the Cal-Royal ASA478 strike or a Trimco 1268 anchor plate any kind of substitute for the 1E7428?
No. The BEST 1E7428 is a mortise cylinder housing that carries the interchangeable core and drives the lock mechanism through its C4 cam. The Cal-Royal ASA478 is a template ASA strike, and the Trimco 1268 is a 3-1/2 inch diameter anchor plate - both are door or frame mounted pieces and neither accepts a key cylinder. They can appear on the same hardware order but they do not replace the cylinder.
How fast can I get the BEST 1E7428C4RP3626 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 1E7428C4RP3626 come with a warranty?
Absolutely. The BEST 1E7428C4RP3626 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 1E7428C4RP3626?
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
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