BEST 12E Series Rim Cylinder L...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$98.00
$69.11
BEST 12E Series Rim Cylinder Less Core, 1-5/32" Diameter BES-12E-LESSCORE

BEST 12E Series Rim Cylinder Less Core with 1-5/32" Diameter

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Model: 12E62-C4RP3626-LC
From the E Series Cylinders Collection
$98.00
$69.11
Selected Finish is

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

$98.00
$69.11
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BEST 12E Series Rim Cylinder Less Core with 1-5/32" Diameter

Professional Rim Cylinder Component for BEST Lock Systems

The BEST 12E Series Rim Cylinder Less Core delivers professional-grade security hardware with precise 1-5/32" diameter construction. This rim cylinder is machined from solid bar stock and features interchangeable core compatibility with existing BEST systems. The standard package includes cylinder, RP3 ring package, 1E-S2 spindle, clamp plate and clamp plate screws for complete installation readiness.

Professional Features & Benefits

  • Precision Diameter: 1-5/32" diameter ensures proper fit and alignment in standard rim cylinder applications.
  • Solid Bar Stock Construction: Machined from solid bar stock for exceptional durability and long-term reliability in commercial applications.
  • Universal Compatibility: Interchangeable with other manufacturers' rim cylinders for versatile installation and replacement options.
  • Complete Hardware Package: Includes cylinder, RP3 ring package, 1E-S2 spindle, clamp plate and clamp plate screws for ready installation.
  • Interchangeable Core System: Features BEST interchangeable core technology for seamless integration into existing BEST master key systems.
  • Multiple Finish Options: Available in a variety of finishes to match existing hardware and architectural requirements.
  • Master Key Capability: May be masterkeyed into any existing BEST system for comprehensive access control management.

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: 12E Series
  • Subcategory: Parts and Accessories

Installation & Operation

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

Why Choose BEST Quality?

BEST rim cylinders deliver professional-grade reliability with solid bar stock construction machined for precision fit and long-term performance. The interchangeable core system and universal compatibility ensure seamless integration into existing security systems. Engineered for demanding commercial applications where dependable access control is essential.

Manufacturer Resources

E Series Service Manual

Product Specs

Series:
12E 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 12E62-C4RP3626-LC – Frequently Asked Questions

1) Does the BEST 12E rim cylinder come with a core, or do I need to order one separately?
No core is included. The 12E rim cylinder ships less core, so you supply a BEST interchangeable core, which lets you key it into an existing BEST master key system rather than having a standalone key. What does come in the box is the cylinder housing, the RP3 ring package, the 1E-S2 spindle, a clamp plate and the clamp plate screws.
2) What cam options does the BEST 12E cylinder come with, and which one do I need for an Adams Rite MS deadlock?
Three option choices: Standard Cam, Standard Spindle, and an Adams Rite MS Cam. If you are driving an Adams Rite MS-style deadlock, pick the Adams Rite MS Cam version, not the standard one. For a typical rim exit device you want the standard spindle/cam configuration, which is the 1E-S2 spindle supplied in the package.
3) I need a rim cylinder but I'm not on a BEST core system. What should I buy instead?
The 12E only makes sense if you have BEST interchangeable cores on hand, since it ships less core. If you are keyed to something else, 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 thing with a horizontal tailpiece cam. Corbin Russwin's 3070 is a 6-pin rim cylinder housing with a 1-7/8 inch tailpiece. Pick the tailpiece orientation your exit device chassis calls for.
4) What is the closest non-BEST equivalent to a 12E rim cylinder for a rim exit device?
The BEST 12E rim cylinder is built as a less-core housing that accepts a BEST interchangeable core, so the replacement question comes down to whether you are keeping that core system. If you are, the 12E housing is what takes the core. If you are moving to a conventional keyed rim cylinder instead, the Schlage Commercial 20-021 is a 6-pin rim cylinder with a vertical tailpiece cam supplied with 2 keys, and the Schlage 20-022 is the same 6-pin rim cylinder with a horizontal tailpiece cam. The tailpiece orientation is the deciding detail on those two: the exit device or lock you are feeding dictates vertical or horizontal.
5) If I want an interchangeable core rim cylinder but not on the BEST small format system, what should I order?
The BEST 12E rim cylinder is a less-core housing that takes a BEST interchangeable core and can be masterkeyed into an existing BEST system. If the facility standard is full size interchangeable core instead, the Schlage Commercial 20-057 is a 6-pin FSIC rim cylinder with a convertible tailpiece cam supplied with 2 keys, and the Schlage 20-057-C is the FSIC core itself in C keyway, 643E Aged Bronze. Those are two separate line items in an FSIC build - the rim housing and the core - where the 12E covers the housing side for a BEST core.
6) My opening takes a mortise cylinder, not a rim cylinder. What do I use instead of the 12E?
A rim cylinder mounts through the door and drives a tailpiece to a surface-applied device, so it will not serve a mortise lock body that needs a threaded mortise cylinder. For mortise openings, the Corbin Russwin 1000 Grade 1 mortise cylinder is a 1-1/2 inch length with an A02 straight cam, and the Corbin Russwin 1070 Grade 1 is a 1-1/4 inch 6-pin mortise housing with an A01 cloverleaf cam. If the mortise lock is a Schlage L9000, the Corbin Russwin 1080 Grade 1 is a 1-1/2 inch LFIC mortise cylinder, 6-pin, with the A01 Schlage L cam. Cam style and cylinder length are what have to match the lock body, not the brand.
7) Will a BEST 12E work on an Adams Rite narrow stile deadlock?
The 12E rim cylinder is offered with an Adams Rite MS cam option alongside the standard cam, which is the configuration that drives an Adams Rite MS deadlock from a rim cylinder. Where the aluminum stile door instead calls for a mortise cylinder, the Adams Rite 4036 is a Grade 1 five-pin mortise cylinder with a 1/2 inch minimum door thickness. For a cylinder pull rather than a plain cylinder, the Adams Rite 4024 mounts with a trim plate and the 4025 is a five-pin cylinder pull with through-screws, both for the MS1847 deadlock and deadlatch, and the 4026 is the five-pin cylinder pull for the 5017 wood door deadlock and deadlatch. Confirm which of those the door already carries before ordering.
8) Which ring do I choose on the BEST 12E cylinder for my door?
The ring selection is what adapts the cylinder to the prep in front of it. Choices are Rim Cylinder, Tapered Cylinder, 3E Mortise, 6-pin Mortise and 7-pin Mortise. A standard rim application on an exit device takes the Rim Cylinder ring; the tapered ring is the cosmetic alternative for the same rim prep. Pick the mortise rings only where the housing is going into a mortise-style application, and match the mortise ring pin count to the cylinder you ordered.
9) I'm replacing cylinders across a portfolio of buildings that are already on BEST keys. Is the 12E the right standard?
For rim openings, yes. Because the 12E takes a BEST interchangeable core and can be masterkeyed into any existing BEST system, you can standardize the housing across every rim opening and control the keying entirely at the core, which means a rekey is a core swap and not a hardware change. Order one finish across the portfolio and match the pin count, 6 or 7, to the system you already run.
10) Is the BEST 12E a whole lock or just the cylinder?
Just the cylinder assembly. It is a replacement part that supplies the keyed component and its mounting hardware, the RP3 rings, 1E-S2 spindle, clamp plate and screws. It does not include a latch, a deadbolt, a lock case or trim, so it goes into an existing device or lock body rather than replacing one.
11) What looks like a substitute for a 12E rim cylinder but is not?
Key-in-knob and key-in-lever cylinders read as rim cylinders in a parts list but mount inside the lockset, not through the door. 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. The Kaba Ilco 1549 is a key-in-deadbolt cylinder. The Falcon A23161-05 G is a key-in-lever cylinder in the RU/T series with a 6-pin G keyway, keyed different with 2 cut keys. None of those replace a rim cylinder driving a surface device - they replace the cylinder inside a knob, lever, or deadbolt.
12) I need a rim cylinder for a residential deadbolt or handleset, not a commercial exit device. What is the right part?
The 12E is a less-core housing that only works if the building is on a BEST interchangeable core system with cores to fit it. On a residential deadbolt or handleset with no core program behind it, a keyed rim cylinder is the simpler order: the Medeco 1012040 is a 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts, the Medeco 1075127 is a 5-pin rim type lazy motion single cylinder for handlesets and deadbolts, and the Medeco 1065244 is a 5-pin rim lazy motion cylinder with an Emtek tailpiece. For an Arrow JL interconnected lock or an Emtek handleset and deadbolt outside cylinder, the Medeco 1065140 is the 5-pin retrofit. The tailpiece is what ties each of those to its lock.
13) How does a BEST 12E compare to a Corbin Russwin 3070 rim cylinder housing?
Both are rim cylinder housings rather than finished keyed cylinders. The Corbin Russwin 3070 is a 6-pin rim cylinder housing in the 3000 series with a 1-7/8 inch tailpiece. The BEST 12E is offered in 6-pin and 7-pin and ships with the RP3 ring package, 1E-S2 spindle, clamp plate and clamp plate screws. The 12E accepts a BEST interchangeable core; the 3070 is a Corbin Russwin housing, so the choice follows whichever core and keyway program the facility already runs.
14) Can I use a Detex MC65 in place of a BEST 12E?
The Detex MC65 is a mortise cylinder with a Schlage C keyway, 1-1/8 inch, 6-pin, commercial grade. That is a threaded mortise cylinder on a Schlage C keyway, so it serves a mortise lock body and keys into a Schlage C system. The BEST 12E is a rim cylinder housing that takes a BEST interchangeable core. They are not interchangeable in either the mounting or the key system - pick by which the door and the keying program require.
15) What finishes does the BEST 12E rim cylinder come in to match my existing 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 building already standardized on 626, order 626 across the fleet and the cylinder faces will match the exit devices and levers already hung.
16) Where do I find installation instructions for a BEST E Series cylinder?
BEST publishes an E Series Service Manual covering the E Series cylinder line, which the 12E belongs to. It walks the ring, spindle and clamp plate assembly, which is the part installers most often get wrong when the spindle length does not suit the door and device combination.
17) Is an Emtek CY4 cylinder a lower-cost alternative to the BEST 12E?
The Emtek CY4 is a cylinder sold each, in the Emtek parts line, and is matched to Emtek trim rather than to a commercial rim device. The BEST 12E is a rim cylinder housing for a BEST interchangeable core, supplied with the RP3 ring package, 1E-S2 spindle, clamp plate and clamp plate screws, and available in finishes from 605 bright brass through 690 statuary dark bronze. If the door carries Emtek trim, the CY4 is the matching part; if the building runs BEST cores, the 12E is.
How fast can I get the BEST 12E62-C4RP3626-LC 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 12E62-C4RP3626-LC come with a warranty?
Absolutely. The BEST 12E62-C4RP3626-LC 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 12E62-C4RP3626-LC?
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 12E62-C4RP3626-LC from ZenSupply?
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