BEST 1EC Series Square Head Mo...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$269.00
$244.92
BEST BEST 1EC Series Square Head Mortise Cylinder with Standard Core, 1-5/32" Diameter BES-1EC-STANDARD

BEST 1EC Series Square Head Mortise Cylinder with Standard Core - 1-5/32" Diameter

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Model: BES-1EC6C4-C4RP3626-SC
From the E Series Cylinders Collection
$269.00
$244.92
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$269.00
$244.92
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BEST 1EC Series Square Head Mortise Cylinder with Standard Core - 1-5/32" Diameter

Professional Mortise Cylinder Solution

The BEST 1EC Series Square Head Mortise Cylinder delivers reliable security for residential and commercial applications with its 1-5/32" diameter design. This precision-engineered cylinder features solid brass or bronze construction with configurable pin lengths of 1-1/4" for 6-pin configurations and 1-13/32" for 7-pin setups. The cylinder includes a special 5/8" slip ring and accommodates standard core systems for flexible key management.

Professional Features & Benefits

  • Precision Diameter: 1-5/32" diameter provides exact fit for mortise lock applications requiring this specific sizing.
  • Configurable Pin Length: Available in 6-pin (1-1/4" length) and 7-pin (1-13/32" length) configurations for varied security requirements.
  • Heavy-Duty Construction: Solid brass or bronze material construction ensures long-term durability and corrosion resistance.
  • Standard Core Compatibility: Designed to work with standard core systems for convenient key management and rekeying.
  • Complete Ring Package: Includes special 5/8" slip ring with additional length options available for custom installations.
  • Square Head Design: Square head configuration provides secure cam engagement and prevents rotation under tampering attempts.

Technical Specifications

  • Collection: E Series Cylinders
  • Commercial/Residential: Residential
  • Department: Door Hardware
  • Parts and Accessories Type: Replacement Parts
  • Product Attribute: Parts and Accessories
  • Product Category: Mechanical Locks
  • Product Group: Parts and Accessories
  • Product Subgroup: Cylinders
  • Product Type: Cylinders
  • Series: 1EC Series
  • Subcategory: Parts and Accessories

Installation & Operation

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

Professional Applications

  • Residential Door Security Systems
  • Commercial Office Buildings
  • Multi-Unit Residential Properties
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Government and Municipal Buildings

Why Choose BEST Quality?

BEST 1EC Series cylinders deliver professional-grade reliability with solid brass or bronze construction engineered for demanding applications. The precision 1-5/32" diameter and configurable pin lengths ensure proper fit and security performance. Engineered for residential and commercial applications where dependable cylinder performance is essential.

Manufacturer Resources

E Series Service Manual

Product Specs

Series:
1EC Series
Subcategory:
Parts and Accessories
Product Group:
Parts and Accessories
Product Subgroup:
Cylinders
Product Type:
Cylinders
Commercial/Residential:
Residential
Collection:
E Series Cylinders
Parts and Accessories Type:
Replacement Parts
Product Attribute:
Parts and Accessories
Product Category:
Mechanical Locks
Department:
Door Hardware

BEST BES-1EC6C4-C4RP3626-SC – Frequently Asked Questions

1) What keyway do I need to order a BEST 1EC mortise cylinder for my existing master key system?
The 1EC mortise cylinder is ordered to your keyway, and BEST covers 20 of them: A, B, C, D, DD, E, F, G, H, J, K, L, M, N, O, R, TB, TC, TD and TE. Keyway is a required selection, and so are the Keymark and the Marking Number, which is how the cylinder gets cut and stamped to match the rest of the system. Pull the keyway letter off one of your existing BEST keys or the marking on a core you already have in service before you order. Get the keyway wrong and the cylinder physically will not accept your key, regardless of how it is pinned.
2) Should I order the 6-pin or the 7-pin BEST 1EC cylinder?
Match whatever your facility already runs. The 6-pin 1EC is 1-1/4 inches long and the 7-pin is 1-13/32 inches, so they are not the same part and the ring stack differs between them. A 7-pin system gives more master keying levels, which is why larger institutional systems use it, but a 7-pin cylinder will not take a 6-pin key from your existing system. If you are adding to an established BEST system, count the cuts on a key in hand and order to that.
3) Will a BEST 1EC cylinder work in an Adams Rite storefront deadlock?
Yes, if you order it with the Adams Rite MS cam. The 1EC is offered with either a Standard Cam, an Adams Rite MS Cam, or a Standard Spindle, and the MS cam is the one that drives an Adams Rite MS deadlock. Order the Standard Cam by mistake and the cylinder threads in fine but nothing actuates the bolt. Glass front installers replacing cylinders in aluminum storefront doors want the MS cam version.
4) What is the diameter of a BEST 1EC mortise cylinder, and will it thread into my mortise lock?
The 1EC measures 1-5/32 inches in diameter, which is the standard mortise cylinder thread size used on commercial mortise lock bodies. If your existing cylinder unscrews from the lock face with a set screw released on the edge of the door, the 1EC replaces it. The length you need depends on door thickness and how far the cylinder has to reach the cam pocket, which is what the ring selection sorts out.
5) Is the BEST 1EC a small format interchangeable core cylinder?
No. The 1EC takes a standard core, not a BEST small format interchangeable core, so it is keyed and rekeyed conventionally rather than by pulling a figure-eight core with a control key. If you run an SFIC system and want to swap cores on a control key without a locksmith, the 1EC is not the part. For an interchangeable core rim application, the Schlage Commercial 20-057 is a 6-pin FSIC rim cylinder with a convertible tailpiece cam.
6) I need a cylinder for a Schlage L9000 mortise lock. Does the BEST 1EC fit it?
The 1EC is a BEST-keyway standard core mortise cylinder and is not sold as a Schlage L9000 cylinder. For that lock the Corbin Russwin 1080 is the direct call: a 1-1/2 inch LFIC mortise cylinder, 6-pin, listed for Schlage L9000 mortise locks with the A01 Schlage L cam. Ordering by lock body rather than by diameter is the right move on mortise locks, because the cam is what determines whether the bolt actually retracts.
7) What do I have to supply when ordering a BEST 1EC cylinder so it arrives keyed correctly?
Three things are required on every 1EC order: the Keyway letter, the Keymark, and the Marking Number. Keymark and Marking Number are free-text because they come off your own system records, not a dropdown. Facility and MRO buyers running a BEST master key system should pull these from the keying schedule or bitting list the system was set up under. Then add finish, 6-pin or 7-pin, cam or spindle option, and ring.
8) What is the equivalent to a BEST 1EC mortise cylinder if the lock is keyed to a Corbin Russwin system?
The Corbin Russwin 1000 Grade 1 series mortise cylinder is the mortise-cylinder counterpart on the Corbin Russwin side, sold in a 1-1/2 inch length with an A02 straight cam. The BEST 1EC is a square head mortise cylinder that takes a standard core and is ordered by BEST keyway, from A through M and the TB through TE group, so the choice between them follows which key system the building is already on rather than the opening itself.
9) Which cylinder should I use on an exit device rim application instead of a mortise cylinder?
A rim application needs a rim cylinder with a tailpiece, not a mortise cylinder with a cam. The Schlage Commercial 20-021 is a 6-pin rim cylinder with a vertical tailpiece cam and two keys, and the 20-022 is the same 6-pin rim cylinder with a horizontal tailpiece cam. The BEST 1EC is ordered with either a standard cam or an Adams Rite MS cam, both of which drive a mortise lock body, though a rim cylinder ring is among the ring choices.
10) What mortise cylinder works with an Adams Rite MS deadlock on an aluminum storefront?
The BEST 1EC can be ordered with an Adams Rite MS cam, which is the cam that drives an Adams Rite MS deadlock. On the Adams Rite side the 4036 is a five-pin mortise cylinder, Grade 1, with a 1/2 inch minimum door thickness. For a glass door where the cylinder is pulled rather than mortised, the Adams Rite 4024 cylinder pull mounts with a trim plate for MS1847 deadlock and deadlatch systems, and the 4025 is a five-pin cylinder pull using through-screws for the same MS1847.
11) What do I use instead of a mortise cylinder when the lock is a key-in-knob or key-in-lever?
A mortise cylinder threads into a mortise lock body and will not fit a knob or lever. The Kaba Ilco 1539 is a key-in-knob and lever universal cylinder, the 1579 is a knob and lever cylinder for Sargent locks, and the 1599 is a key-in-knob replacement cylinder. Falcon also lists the A23161-05 G key-in-lever cylinder in the RU/T series with a 6-pin G keyway, keyed different with two cut keys.
12) The facility wants interchangeable cores for rekeying. What are the options besides a standard-core cylinder?
The BEST 1EC takes a standard core. Where a full size interchangeable core is wanted instead, the Schlage 20-057 is a 6-pin FSIC rim cylinder with a convertible tailpiece cam and two keys, and the 20-057-C is a full size interchangeable core cylinder on the C keyway in 643E aged bronze. The Corbin Russwin 1080 is a 1-1/2 inch LFIC mortise cylinder, 6-pin, for Schlage L9000 mortise locks with an A01 cloverleaf cam.
13) Which ring do I pick on a BEST 1EC cylinder, and why does it matter?
The ring sets how far the cylinder stands proud of the door face so the cam lands in the right plane. Five choices are offered: 3E Mortise, 6-pin Mortise, 7-pin Mortise, Rim Cylinder, and Tapered Cylinder. A special 5/8 inch slip ring comes with the cylinder, with longer lengths available when the door or trim is thicker than usual. Match the ring to the pin count you ordered, and pick the tapered ring where the trim calls for a finished taper rather than a flat collar.
14) I need to match the finish on the rest of my doors. What finishes does the BEST 1EC mortise cylinder come in?
Ten finishes, by BHMA number: 605 bright brass, 606 satin brass, 611 bright bronze, 612 satin bronze, 613 satin bronze oil-rubbed, 619 satin nickel, 622 matte black, 625 bright chrome, 626 satin chrome and 690 statuary dark bronze. Property managers standardizing a building usually land on 626 satin chrome or 613 oil-rubbed bronze. The BHMA number is stamped or documented on most existing trim, so read it off a lock you already have rather than matching by eye.
15) What else could I use instead of a BEST 1EC mortise cylinder if I am not on a BEST keyway?
Several mortise cylinders cover the same opening on other keying systems. The Corbin Russwin 1000 Series is a Grade 1 mortise cylinder, 1-1/2 inches long with an A02 straight cam. The Corbin Russwin 1070 is a 1-1/4 inch 6-pin mortise housing with an A01 cloverleaf cam. If your building runs Schlage C keyway, the Detex MC65 is a 1-1/8 inch 6-pin mortise cylinder in Schlage C. Pick by which cam your lock body needs and which keyway your keys are cut to, in that order.
16) Can I use a BEST 1EC mortise cylinder on a rim exit device?
A mortise cylinder threads into a lock body and is not the same part as a rim cylinder, which mounts through the door with a tailpiece to drive an exit device. The 1EC is built as a mortise cylinder. For a rim exit device, the Schlage Commercial 20-021 is a 6-pin rim cylinder with a vertical tailpiece cam and the 20-022 is the same with a horizontal tailpiece cam. Check which orientation your device wants before ordering.
17) Is a Corbin Russwin 1070 housing the same thing as a BEST 1EC mortise cylinder?
They are not interchangeable. The Corbin Russwin 1070 is a 1-1/4 inch 6-pin mortise housing with an A01 cloverleaf cam, and a housing is supplied to receive a core. The BEST 1EC arrives as a square head mortise cylinder with a standard core and a special 5/8 inch slip ring, in 6-pin at 1-1/4 inch or 7-pin at 1-13/32 inch. Which one to order depends on whether the core is already on hand.
18) Can I use a mortise cylinder to rekey a residential deadbolt or handleset?
Residential deadbolts and handlesets generally take a rim type lazy motion cylinder rather than a mortise cylinder. 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, and the 1065244 is a 5-pin rim lazy motion cylinder with an Emtek tailpiece. The Medeco 1065140 is a 5-pin retrofit cylinder for the Arrow JL interconnected lock and for Emtek handleset and deadbolt outside cylinders, and Emtek also lists the CY4 cylinder sold each.
19) What is the difference between the Corbin Russwin 3070 and a BEST 1EC mortise cylinder?
The Corbin Russwin 3070 is a 6-pin rim cylinder housing in the 3000 series with a 1-7/8 inch tailpiece, so it mounts through the door behind a rim device. The BEST 1EC is a square head mortise cylinder that threads into a mortise lock body and takes a standard cam or an Adams Rite MS cam. The tailpiece length on the 3070 is what sets the rim application; a cam does that job on the mortise side.
20) For a keyed deadbolt on an apartment door, is a BEST 1EC the right cylinder?
Only if the deadbolt is a mortise lock body. Kaba Ilco lists the 1549 series as a key-in-deadbolt cylinder, a deadbolt function part, which is the direct route on a standard residential or light commercial deadbolt. The BEST 1EC is a mortise cylinder in 6-pin or 7-pin with a standard core and finishes from 605 bright brass through 626 satin chrome and 690 statuary dark bronze, which matters when the cylinder has to match the rest of the trim on the unit doors.
21) Which cylinder pull do I use on a wood door instead of one built for an aluminum storefront?
The Adams Rite 4026 is a five-pin tumbler cylinder pull for wood door applications, designed for use with the Adams Rite 5017 wood door deadlock and deadlatch. The 4024 and 4025 pulls are both built for the MS1847 deadlock and deadlatch instead, the 4024 mounting with a trim plate and the 4025 with through-screws, so the deadlock model in the door decides which pull goes on it.
22) What is the BEST 1EC cylinder made of, and will it hold up on an exterior door?
Solid brass or bronze throughout, which is what gives it corrosion resistance on an exterior opening. That is the same material class used on commercial mortise cylinders generally, and it is why the oil-rubbed and statuary bronze finishes patina rather than flake. For a coastal or high-moisture opening, the plated finishes (625, 626, 619) wear differently from the living bronze finishes, so pick based on whether you want the finish to stay uniform or age.
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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 BES-1EC6C4-C4RP3626-SC come with a warranty?
Absolutely. The BEST BES-1EC6C4-C4RP3626-SC 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 BES-1EC6C4-C4RP3626-SC?
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