BEST 1E Series Standard Core S...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$249.00
$141.07
BEST BEST 1E Series Standard Core Special Length Mortise Cylinder BES-1ESL-STANDARD

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

(No reviews yet) Write a Review

Model: BES-1E6422C4RP3626-SC
From the E Series Cylinders Collection
$249.00
$141.07
Selected Finish is

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

$249.00
$141.07
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

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

Professional Mortise Cylinder Solution for Special Thickness Door Applications

The BEST 1E Series Standard Core Special Length Mortise Cylinder provides professional-grade security for doors requiring non-standard cylinder lengths. Machined from solid brass or bronze bar stock, this cylinder accommodates special thickness doors with various length options from 1-3/8" to 6". Features the BEST interchangeable core system for seamless integration into existing BEST master key systems and includes standard 1E-C4 cam with RP2 (6 pin) or RP3 (7 pin) ring packages.

Professional Features & Benefits

  • Special Length Compatibility: Available in 19 different lengths from 1-3/8" to 6" to accommodate doors of varying thickness requirements.
  • Premium Construction: Machined from solid brass or bronze bar stock for exceptional durability and corrosion resistance in commercial applications.
  • Interchangeable Core System: Features BEST interchangeable core technology allowing integration into existing BEST master key systems without cylinder replacement.
  • Enhanced Security: Diagonal set screw mounts in cylinder wall to securely hold the cylinder in housing, preventing unauthorized removal.
  • Standard Configuration: Includes 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 through use of different cams and cylinder rings for versatile applications.
  • Professional Ordering System: Length code designation system (22-96) allows precise specification of required cylinder length for exact door thickness matching.

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

This replacement 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 and verify door thickness requirements before installation.

Professional Applications

  • Commercial Office Buildings with Non-Standard Door Thickness
  • Educational Facilities Requiring Special Length Cylinders
  • Healthcare Institutions with Varied Door Construction
  • Retail Establishments with Custom Door Applications
  • Industrial Facilities with Specialized Security Requirements
  • Multi-Tenant Residential Properties
  • Government Buildings with Specific Cylinder Length Needs

Why Choose BEST Quality?

BEST 1E Series cylinders deliver professional-grade security with solid brass or bronze construction machined from bar stock for superior durability. The interchangeable core system provides operational flexibility while the diagonal set screw design ensures secure mounting in demanding commercial applications. Engineered for reliable performance in specialized door thickness 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-SC – Frequently Asked Questions

1) Will a BEST 1E Series mortise cylinder work in 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, so when a thick door, a heavy stile, or an added layer of cladding pushes the lock case deeper than a stock 1-1/8 or 1-1/4 inch cylinder can reach, you order the length that puts the cam face flush with the lock. Length is specified by a code in the 22 to 96 range on the order, so you name the length you need rather than shimming a short cylinder.
2) Does the BEST 1E cylinder take my existing BEST interchangeable cores and keys?
Yes. The 1E is built around the BEST interchangeable core system, so a standard BEST core keyed into your existing master key system drops straight in and the cylinder carries your keying without being rekeyed itself. Order it in the keyway your system already uses, since 6-pin and 7-pin builds are both offered and the keyway must match your core. That is the whole point of the format for a facility that keys hundreds of openings to one system.
3) What keyway do I have to specify when ordering a BEST 1E mortise cylinder?
You pick one of 20 BEST keyways at order time: A, B, C, D, DD, E, F, G, H, J, K, L, M, N, O, R, TB, TC, TD, or TE. It's a required choice, along with your keymark and the marking number stamped on the cylinder. If you're adding openings to an existing BEST system, pull the keyway letter off a key or an existing core before ordering, because a mismatched keyway will not accept your cores.
4) Which cam and rings come with the BEST 1E cylinder, and can I change them?
Standard build is the 1E-C4 cam with either the RP2 ring package for 6-pin or RP3 for 7-pin, unless you specify otherwise. You can specify otherwise: cam options include the standard cam, an Adams Rite MS cam for MS deadlock hardware, and a standard spindle, and ring choices cover 3E mortise, 6-pin mortise, 7-pin mortise, rim cylinder, and tapered cylinder. Swapping the cam and ring is how the same cylinder body gets made to work in another manufacturer's lock.
5) What information do I have to give when ordering a BEST 1E cylinder so it arrives keyed right?
Three required entries beyond finish and length: keyway letter, keymark, and marking number. The keymark ties the cylinder to your key system's records so it comes keyed into that system rather than keyed different; the marking number is what gets stamped on the part for your records. Also settle pin count (6 or 7), cam, and ring package on the same order, since the standard build is a 1E-C4 cam with RP2 or RP3 rings unless you say otherwise.
6) What should I use instead of a BEST 1E mortise cylinder on an aluminum stile door with an Adams Rite MS deadlock?
Two routes. The BEST 1E Series is offered with an Adams Rite MS cam as a cam option, which lets the interchangeable core cylinder drive an MS deadlock directly. If the door instead needs a cylinder pull rather than a mortise cylinder, the Adams Rite 4024 mounts with a trim plate and the Adams Rite 4025 uses through-screws, both designed for use with the Adams Rite MS1847 deadlock or deadlatch. On a wood door with a 5017 wood door deadlock or deadlatch, the equivalent five pin tumbler cylinder pull is the Adams Rite 4026.
7) What is the closest interchangeable core mortise cylinder to a BEST 1E Series if the lock is a Schlage L9000?
The Corbin Russwin 1080 is the direct counterpart for that opening. The CR1080-112-A01 is a 1-1/2 inch large format interchangeable core mortise cylinder, 6-pin, built for Schlage L9000 mortise locks, and it carries an A01 cloverleaf cam. The BEST 1E Series special length mortise cylinder is a standard core interchangeable core cylinder that ships with the 1E-C4 cam and RP2 (6 pin) or RP3 (7 pin) ring packages, and it may be altered to work with other manufacturers' locks through different cams and cylinder rings. So the choice is between adapting the 1E with the correct cam and ring, or ordering the 1080 already configured for the Schlage L cam.
8) Is there a simpler fixed mortise cylinder to use instead of a BEST 1E when no master key system is involved?
Yes. The Corbin Russwin 1000 Grade 1 mortise cylinder in the 1-1/2 inch length with an A02 straight cam is a conventional keyed mortise cylinder in the 1000 series, and the Detex MC65 is a 1-1/8 inch 6-pin mortise cylinder in the Schlage C keyway. Both are single-piece cylinders keyed on their own. The BEST 1E Series uses the BEST interchangeable core system so the core can be pulled and rekeyed into an existing BEST master key system without replacing the cylinder, and it is offered in 19 lengths from 1-3/8 inch to 6 inch for special thickness doors.
9) Which interchangeable core cylinders look like a BEST 1E substitute but are a different core size?
The Schlage 20-057 is a 6-pin full size interchangeable core rim cylinder with a convertible tailpiece cam, and the Schlage 20-057-C is a full size interchangeable core in the C keyway with a 643E aged bronze finish. Both are full size interchangeable core parts, while the BEST 1E Series uses the BEST standard core interchangeable core system and is keyed in BEST keyways A through R plus TB, TC, TD and TE. A full size core will not drop into a housing prepped for a BEST small format core, so these are not a core-for-core swap.
10) Should I order a 6-pin or 7-pin BEST cylinder?
Match whatever your existing BEST cores are. Both are offered, and the ring package follows the choice: RP2 with 6-pin, RP3 with 7-pin, and the ring axis carries dedicated 6-pin mortise and 7-pin mortise rings. Seven-pin is the deeper core and will not seat in a housing set up for six, so this is a decision you make from a core you already have in hand, not a preference.
11) How is the BEST 1E cylinder held in the lock so it can't be twisted out?
A diagonal set screw seats in the cylinder wall and clamps it into the housing, which is what resists someone wrenching the cylinder out of the face of the door. The body itself is machined from solid brass or bronze bar stock rather than cast, so the threads and the screw seat hold up on an exterior opening.
12) I need a rim cylinder for an exit device, not a mortise cylinder. Can the BEST 1E do that?
The 1E is a mortise cylinder, threaded into a lock case. It is offered with a rim cylinder ring, but if you're feeding an exit device with a rim cylinder the purpose-built parts are cleaner: the Schlage 20-021 rim cylinder with a vertical tailpiece cam, the 20-022 with a horizontal tailpiece cam, or the Corbin Russwin 3070 6-pin rim housing with a 1-7/8 inch tailpiece. If you want to stay on interchangeable cores, the Schlage 20-057 is a 6-pin FSIC rim cylinder with a convertible tailpiece cam.
13) What's the difference between the BEST 1E interchangeable core cylinder and a conventional mortise cylinder like the Corbin Russwin 1000?
Two different service models. The 1E takes a removable BEST interchangeable core, so a locksmith pulls the core with a control key and swaps keying in seconds without touching the lock. The Corbin Russwin 1000 Grade 1 mortise cylinder, 1-1/2 inch with an A02 straight cam, is a conventional fixed-cylinder body that has to be pinned or replaced to rekey. If you already run BEST cores across a building, stay on the 1E. If you're doing a handful of openings with no core program, the conventional cylinder is the simpler part.
14) Is a special length BEST cylinder the right call, or should I just use a standard length one?
Use a standard length if a stock cylinder sits flush in your lock. Reach for the 1E special length only when the door or the trim depth means a normal cylinder either bottoms out or leaves the plug proud of the face, which is where a projecting cylinder becomes a grab point. The 19 length options from 1-3/8 to 6 inches exist for thick doors, custom construction, and openings where cladding has been added over an existing lock. Measure from the lock's cylinder threads to the finished face of the trim, then pick the length code.
15) Is a rim cylinder a valid replacement for a BEST 1E mortise cylinder?
No, they thread and drive differently. A mortise cylinder threads into the lock case and turns a cam; the BEST 1E Series carries the 1E-C4 cam as standard. A rim cylinder mounts through the door and drives a tailpiece into an exit device or rim lock: the Schlage 20-021 is a 6-pin rim cylinder with a vertical tailpiece cam, the Schlage 20-022 the same with a horizontal tailpiece cam, and the Corbin Russwin 3070-178 is a 6-pin rim cylinder housing with a 1-7/8 inch tailpiece. If the BEST core needs to serve a rim application instead, the 1E is offered with a rim cylinder ring rather than a mortise ring.
16) If the door is a knob or lever lockset rather than a mortise lock, what cylinder replaces a BEST 1E?
A mortise cylinder will not fit a key-in-knob or key-in-lever chassis. For those, the Kaba Ilco 1539 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; for a keyed deadbolt the Kaba Ilco 1549 is a key-in-deadbolt cylinder. The Falcon A23161-05 G is a key-in-lever cylinder for the RU/T series, 6-pin G keyway, keyed different with 2 cut keys. The BEST 1E Series is a mortise cylinder that threads into a compatible BEST mortise lock and is sized by length code for special thickness doors.
17) What mortise cylinder alternative to the BEST 1E is rated Grade 1 for a thin stile?
The Adams Rite 4036 is a Grade 1 five-pin mortise cylinder in the 4036 series with a 1/2 inch minimum door thickness range, which suits narrow stile and thin material openings. The BEST 1E Series runs the other direction: it is built for special thickness doors, offered in 19 lengths from 1-3/8 inch to 6 inch, machined from solid brass or bronze bar stock, with a diagonal set screw in the cylinder wall holding it in the housing.
18) How does the cam differ between a BEST 1E mortise cylinder and the Corbin Russwin 1070 housing?
The Corbin Russwin 1070 in the 1-1/4 inch length is a Grade 1 six-pin mortise housing supplied with the A01 cloverleaf cam. The BEST 1E Series ships with the 1E-C4 cam unless otherwise specified, and is also offered with an Adams Rite MS cam or a standard spindle as cam options. Confirm which cam the lock case requires before ordering either, since the cam is what engages the lock and the two use different standard cams.
19) What finishes does the BEST 1E mortise cylinder come in to match the rest of my door hardware?
Ten finishes: 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. For a property manager matching a floor of existing openings, the 626 satin chrome and 630-family look is the common commercial pairing, and the BHMA number stamped on your current cylinder ring is the fastest way to match.
20) Is there installation and service documentation for BEST E Series cylinders?
Yes, the E Series Service Manual covers the family, including core removal and cylinder service procedures. Worth pulling before a first install if your crew has not worked interchangeable cores, because the control key procedure for removing and seating a core is not obvious from the part itself.
21) Can a Medeco retrofit cylinder be used where a BEST 1E mortise cylinder is specified?
They serve different openings. The Medeco 1012040 is a 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts, the 1065140 is a 5-pin retrofit cylinder for Arrow JL interconnected locks and Emtek handleset and deadbolt outside cylinders, the 1065244 is a 5-pin lazy motion rim cylinder with an Emtek tailpiece, and the 1075127 is a 5-pin rim type lazy motion single cylinder for handlesets and deadbolts. Those are rim style retrofits tied to specific residential lock bodies. The BEST 1E Series is a threaded mortise cylinder built around the BEST interchangeable core so the core can be rotated into an existing BEST master key system. An Emtek handleset needing only its own cylinder takes the Emtek CY4.
How fast can I get the BEST BES-1E6422C4RP3626-SC 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 BES-1E6422C4RP3626-SC come with a warranty?
Absolutely. The BEST BES-1E6422C4RP3626-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-1E6422C4RP3626-SC?
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 BES-1E6422C4RP3626-SC from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!