BEST 1E Series Premium Core Sp...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$266.00
$243.04
BEST BEST 1E Series Premium Core Special Length Mortise Cylinder BES-1ESL-PREMIUM

BEST 1E Series Premium Core Special Length Mortise Cylinder with Interchangeable Core System

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Model: BES-1E6422C4RP3626-PC
From the E Series Cylinders Collection
$266.00
$243.04
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$266.00
$243.04
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BEST 1E Series Premium Core Special Length Mortise Cylinder with Interchangeable Core System

Professional Mortise Cylinder Solution for Special Thickness Door Applications

The BEST 1E Series Premium Core Special Length Mortise Cylinder delivers professional-grade security for special thickness door applications requiring custom cylinder lengths. Machined from solid brass or bronze bar stock, this premium mortise cylinder features BEST’s interchangeable core system and may be master-keyed into any existing BEST system. Available in various lengths from 1-3/8" to 6" to accommodate doors of different thicknesses, with standard 1E-C4 cam supplied unless otherwise specified.

Professional Features & Benefits

  • Special Length Compatibility: Available in 19 different lengths from 1-3/8" to 6" (length codes 22 through 96) for special thickness door applications.
  • Premium Construction: Machined from solid brass or bronze bar stock for exceptional durability and long-term performance in commercial applications.
  • Interchangeable Core System: Features BEST interchangeable core technology allowing master-keying into any existing BEST system for flexible key management.
  • Enhanced Security Design: Diagonal set screw mounts in cylinder wall and when tightened, holds the cylinder securely in the housing for added security.
  • Standard Configuration: Includes standard 1E-C4 cam and RP2 (6 pin) or RP3 (7 pin) ring packages unless otherwise specified for immediate installation.
  • Universal Compatibility: May be altered to function with other manufacturers’ locks by use of different cams and different cylinder rings for versatile applications.
  • Professional Documentation: Comprehensive service manual and catalog resources available for proper installation and maintenance guidance.

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: 1E Series
  • Subcategory: Parts and Accessories

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness, stile width, and handing as applicable to this product.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and/or frame surfaces.
  3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions.
  4. Install all mounting hardware and secure the device to door and frame per manufacturer torque specifications.
  5. Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion.
  6. Test device operation to verify proper function and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Special Thickness Door Installations
  • Commercial Building Retrofit Projects
  • Educational Facility Security Upgrades
  • Healthcare Institution Access Control
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings
  • Industrial Facility Security Systems

Why Choose BEST Quality?

BEST 1E Series cylinders deliver professional-grade reliability with solid brass or bronze construction machined from bar stock for demanding commercial applications. The interchangeable core system provides flexible key management integration with existing BEST systems, while the diagonal set screw design ensures secure mounting in the cylinder housing. Engineered for special thickness door applications where standard cylinders cannot accommodate unique installation requirements.

Manufacturer Resources

E Series Service Manual

Product Specs

Series:
1E 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-1E6422C4RP3626-PC – Frequently Asked Questions

1) Will a BEST 1E Series mortise cylinder work on a door thicker than standard?
That's exactly what the 1E Series special length cylinder is for. It comes in 19 lengths from 1-3/8 inches up to 6 inches (length codes 22 through 96), so a thick door, a door with a heavy applied panel, or a lock housing set deep in a stile can still be reached by the cam. Measure from the face of the lock housing to the finished face of the door and pick the length that puts the cylinder face flush.
2) Can a BEST 1E mortise cylinder be master keyed into the BEST system already in my building?
Yes. The 1E cylinder takes a BEST interchangeable core, so it may be master keyed into any existing BEST system. Order the keyway to match what you already run (WA, WB, WC, WD, WE, WG, WH, WK or WY), and give your keymark and marking number so the core is cut to your existing system rather than as a standalone.
3) What do I have to specify when ordering a BEST 1E interchangeable core mortise cylinder?
Four things decide the part. Length code for your door and lock depth, keyway plus keymark and marking number so it keys into your system, 6-pin or 7-pin, and finish. Cam and ring come standard: a 1E-C4 cam, with RP2 rings for 6-pin or RP3 for 7-pin, unless you specify otherwise. If the cylinder is going into an Adams Rite MS deadlock you have to call out the Adams Rite MS cam instead of the standard cam.
4) Will a BEST 1E cylinder fit a lock made by another manufacturer?
It can. The 1E cylinder may be altered to work in other manufacturers' locks by fitting a different cam and different cylinder rings. The threads and body are standard mortise; what changes brand to brand is the cam shape and how far the cylinder needs to stand proud, which the ring makes up. The Adams Rite MS cam is offered outright for Adams Rite MS deadlocks.
5) Is the BEST 1E cylinder the right part for an aluminum storefront door with an Adams Rite deadlock?
It can be, if you order it with the Adams Rite MS cam rather than the standard 1E-C4 cam. Storefront stiles are shallow, so pick a short length code from the 1-3/8 inch end of the range. The alternative is a purpose-built Adams Rite cylinder: the 4036 mortise cylinder is Grade 1 and works down to a 1/2 inch minimum door thickness, and for MS1847 deadlocks the 4024 and 4025 cylinder pulls are made for that lock.
6) Can I use the BEST 1E to replace a key-in-knob or key-in-lever cylinder?
No. The 1E is a threaded mortise cylinder for a mortise lock case, not a knob or lever plug. For key-in-knob and lever replacements, the Kaba Ilco 1539 universal key-in-knob/lever cylinder covers a broad range, the 1579 is built for Sargent knobs and levers, and the 1599 is a key-in-knob replacement; the Falcon A23161-05 G is a key-in-lever cylinder in a 6-pin G keyway. For a key-in-deadbolt, the Kaba Ilco 1549 is the one.
7) The device is an exit device that takes a rim cylinder, not a mortise cylinder. What do I use?
A rim cylinder is a different housing and will not interchange with a mortise cylinder body. 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 rim cylinder with a horizontal tailpiece cam. The Corbin Russwin 3070 is a 6-pin rim cylinder housing with a 1-7/8 inch tailpiece. Match the tailpiece orientation and length to the exit device before ordering. The BEST 1E Series does list a Rim Cylinder ring among its ring options, so confirm the housing you need is genuinely rim and not a mortise cylinder with a rim-style ring.
8) What is the closest interchangeable core mortise cylinder to the BEST 1E Series if I am standardizing on Corbin Russwin instead?
The Corbin Russwin 1080 Grade 1 Series 1-1/2 inch LFIC mortise cylinder is the peer that carries an interchangeable core in a mortise housing, and it is supplied with an A01 cloverleaf cam. The BEST 1E Series Premium Core mortise cylinder uses BEST interchangeable core technology and may be master-keyed into any existing BEST system, and it ships with the standard 1E-C4 cam unless otherwise specified. The practical difference is the core format and the keying system each ties back to: the 1E goes into an existing BEST masterkey system, the 1080 into a Corbin Russwin LFIC system. Cam style also differs, so confirm the cam matches the lock body either way.
9) I do not need an interchangeable core, just a fixed mortise cylinder for a standard door. What should I order instead?
A conventional mortise cylinder is the simpler route. The Corbin Russwin 1000 Grade 1 Series mortise cylinder comes in a 1-1/2 inch length with an A02 straight cam, and the Corbin Russwin 1070 Grade 1 Series 1-1/4 inch 6-pin mortise housing comes with an A01 cloverleaf cam. The Detex MC65 is a 1-1/8 inch 6-pin mortise cylinder in the Schlage C keyway. The BEST 1E Series Premium Core cylinder exists to carry a removable BEST core and to reach special door thicknesses, offered in 19 lengths from 1-3/8 inch to 6 inch; if the door is a standard thickness and you are not keying into a BEST core system, a fixed-cylinder peer covers the opening in one part.
10) Will the BEST 1E Series work on an Adams Rite MS deadlock, or do I need an Adams Rite cylinder?
The BEST 1E Series is offered with an Adams Rite MS Cam option, and the cylinder may be altered to function with other manufacturers' locks by use of different cams and different cylinder rings. On the Adams Rite side, the 4036 mortise cylinder is a five-pin Grade 1 cylinder in the 4036 Series with a 1/2 inch minimum door thickness. The 4024 and 4025 cylinder pulls are made for the MS1847 deadlock or deadlatch, the 4025 using through-screws and five-pin tumbler, and the 4026 five-pin cylinder pull is for the 5017 wood door deadlock or deadlatch. If you are replacing a cylinder pull rather than a plain cylinder, the pull models are the match; if it is a straight mortise cylinder position, either the 1E with the MS cam or the 4036 addresses it.
11) How do the pin counts compare if I want a 7-pin cylinder for a larger masterkey system?
The BEST 1E Series Premium Core cylinder is ordered as either 6-pin or 7-pin, with the RP3 ring package on the 7-pin, and 7-pin mortise rings are offered. Among the peers, the Corbin Russwin 1080, the 1070, the 3070 rim housing, the Detex MC65, the Falcon A23161-05 G and the Schlage 20-021, 20-022 and 20-057 are all 6-pin, while the Adams Rite 4036, the 4025 and 4026 cylinder pulls and the Medeco 1065140, 1065244 and 1075127 are five-pin. If the masterkeying plan calls for a seventh pin chamber, the 1E is the one in this group that offers it.
12) The lock is a Schlage L9000 mortise lock. Do I use the BEST 1E or something made for it?
The Corbin Russwin 1080 is described specifically for Schlage L9000 mortise locks, as a 1-1/2 inch 6-pin LFIC mortise cylinder with an A01 Schlage L cam. The BEST 1E Series may be altered to function with other manufacturers' locks by use of different cams and different cylinder rings, and ships with the 1E-C4 cam unless another is specified, so it can serve the same lock body when the correct cam is called out at order time. The deciding factor is which core system the building is keyed to and whether you want to specify the cam yourself or take a part already configured for the L9000.
13) 6-pin or 7-pin BEST core, which one do I need?
Match whatever your existing BEST system uses, because the two are not interchangeable in one keying system. The 1E is offered in both, and the ring package follows the pin count: RP2 rings with 6-pin, RP3 with 7-pin. Seven pin gives more master keying levels, so large institutional systems tend to run 7-pin; a single building or a small suite is usually 6-pin.
14) Do I order rings separately for a BEST 1E mortise cylinder?
Rings ship with it, and the ring is what sets the cylinder face flush with the trim. Choose from 3E mortise, 6-pin mortise, 7-pin mortise, rim cylinder, or tapered cylinder rings. Tapered is the one to pick where the trim has a sloped or beveled collar; the plain mortise rings sit flat.
15) What is the difference between the BEST 1E interchangeable core cylinder and a conventional mortise cylinder?
With the 1E, rekeying is pulling the figure-eight core with a control key and dropping a new one in, no disassembly and no locksmith at the door. A conventional mortise cylinder such as the Corbin Russwin 1000 Grade 1 (1-1/2 inch, A02 straight cam) has to be pinned or swapped as a whole unit. If you are not already running BEST cores, a conventional cylinder is simpler; if you manage a lot of doors and turnover, the removable core pays for itself.
16) I want an interchangeable core but on a rim application. Is there a peer for that?
Yes. The Schlage Commercial 20-057 is a 6-pin full size interchangeable core rim cylinder with a convertible tailpiece cam and two keys, and the 20-057-C is a full size interchangeable core cylinder in the C keyway, finished 643E aged bronze. Both take an FSIC core rather than a BEST small format core, so the core and the keying system are not shared with the BEST 1E Series, which master-keys into an existing BEST system. Decide the core format first; the housing follows from it.
17) My opening is a key-in-knob or key-in-lever lock, not a mortise lock. Which cylinder replaces that?
A mortise cylinder threads into a mortise lock body and does not fit a knob or lever. For those, the Kaba Ilco 1539 Series is a key-in-knob and lever universal cylinder, and the 1579 is a knob and lever cylinder for Sargent. The 1599 is a key-in-knob replacement cylinder. The Falcon A23161-05 G is a key in lever cylinder for the RU/T Series in a 6-pin G keyway, keyed different with two cut keys. Identify the lock chassis brand first, since these knob and lever cylinders are chassis-specific rather than universal across every make.
18) I am rekeying a residential deadbolt or handleset. Is a mortise cylinder the wrong part there?
For most residential deadbolts and handlesets the part is a rim-type or deadbolt cylinder, not a mortise cylinder. The Kaba Ilco 1549 Series is a key-in-deadbolt cylinder. The Medeco 1012040 is a 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts, the 1075127 is a 5-pin rim type lazy motion single cylinder for handlesets and deadbolts, the 1065244 is a 5-pin rim lazy motion cylinder with an Emtek tailpiece, and the 1065140 is a 5-pin retrofit cylinder for the Arrow JL interconnected lock and the Emtek handleset and deadbolt outside cylinder. Emtek also lists the CY4 cylinder sold each. Tailpiece style is what decides fit on these, so match it to the deadbolt you are opening up.
19) Which cylinder should I standardize on across a facility where door thicknesses vary?
The BEST 1E Series Premium Core mortise cylinder is built for exactly that case: 19 lengths from 1-3/8 inch to 6 inch, length codes 22 through 96, so one series and one keying system covers thin and thick doors alike, with a removable core that master-keys into an existing BEST system. Fixed-length peers such as the Corbin Russwin 1000 at 1-1/2 inch, the 1070 at 1-1/4 inch and the Detex MC65 at 1-1/8 inch each cover a single length, so a mixed-thickness facility would need several part numbers rather than one. Choose on how much thickness variation your openings actually have.
20) Is a mortise housing sold without a core the same thing as a complete mortise cylinder?
No, and it is a common ordering mistake. The Corbin Russwin 1070 is described as a 6-pin mortise housing and the Corbin Russwin 3070 as a rim cylinder housing, which are the shells that accept a separate core. The Corbin Russwin 1000 and 1080 are described as mortise cylinders. The BEST 1E Series Premium Core cylinder includes the standard 1E-C4 cam and the RP2 six pin or RP3 seven pin ring package unless otherwise specified, and is ordered in either 6-pin or 7-pin. When cross-shopping, confirm whether the peer part number includes a core or only the housing so you do not end up with a shell and no way to key it.
21) My spec sheet calls for a Grade 1 cylinder. Which of these carries that grade?
The Adams Rite 4036 mortise cylinder is listed as Grade 1 in the 4036 Series, with a 1/2 inch minimum door thickness. The Corbin Russwin 1000, 1070 and 1080 are Grade 1 Series mortise products, the 1000 in a 1-1/2 inch length with an A02 straight cam, the 1070 a 1-1/4 inch housing with an A01 cloverleaf cam, and the 1080 a 1-1/2 inch LFIC cylinder built for Schlage L9000 mortise locks. Bring the grade language on the drawing to whichever of these matches the housing type your lock takes.
22) Is there an installation manual for BEST E Series cylinders?
Yes, BEST publishes an E Series service manual covering the cylinder line, including core removal and cam and ring changes. ZenSupply hosts it at https://zensupply.com/content/pdf/best/E-Series-Service-Manual.pdf.
23) I am matching finishes to existing hardware. How does the finish range compare?
The BEST 1E Series Premium Core cylinder is offered in 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. Among the peers, the Schlage 20-057-C is listed in 643E aged bronze. If the opening has to match a dark bronze or black lever set, the 1E finish range gives you the closer match across the standard BHMA numbers.
How fast can I get the BEST BES-1E6422C4RP3626-PC delivered?
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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-1E6422C4RP3626-PC come with a warranty?
Absolutely. The BEST BES-1E6422C4RP3626-PC 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-1E6422C4RP3626-PC?
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Why buy the BEST BES-1E6422C4RP3626-PC from ZenSupply?
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