BEST 1E Series Premium Core 6-...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$229.00
$208.50
BEST BEST 1E Series Premium Core 6-Pin Mortise Cylinder, 1-5/32" Diameter BES-1E6-PREMIUM

BEST 1E Series Premium Core 6-Pin Mortise Cylinder with Interchangeable Core System

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Model: BES-1E64-C4RP3626-PC
From the E Series Cylinders Collection
$229.00
$208.50
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$229.00
$208.50
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BEST 1E Series Premium Core 6-Pin Mortise Cylinder with Interchangeable Core System

Professional Mortise Cylinder Solution with Interchangeable Core Technology

The BEST 1E Series Premium Core 6-Pin Mortise Cylinder delivers professional-grade security with a 1-5/32" diameter design engineered for standard mortise applications. This premium cylinder features BEST's interchangeable core system and is machined from brass or bronze bar stock for exceptional durability. The cylinder includes a standard 1E-C4 cam and diagonal set screw mounting system for secure installation in mortise housings.

Professional Features & Benefits

  • Precision Dimensions: 1-5/32" diameter specifically designed for standard mortise lock applications with proper fit and alignment.
  • Interchangeable Core System: Features BEST interchangeable core technology allowing integration into existing BEST master key systems for flexible access control.
  • Premium Construction: Machined from brass or bronze bar stock providing superior durability and corrosion resistance for long-term performance.
  • Secure Mounting Design: Diagonal set screw mounts in cylinder wall to hold the cylinder securely in the housing, preventing unauthorized removal.
  • Standard Cam Configuration: Includes standard 1E-C4 cam for compatibility with BEST mortise lock mechanisms and proper operation.
  • Versatile Compatibility: Can be altered with different cams and cylinder rings to function with other manufacturers' locks for retrofit applications.
  • Master Key Integration: May be master-keyed 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: 1E Series
  • Subcategory: Parts and Accessories

Installation & Operation

This 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 before installation.

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings
  • Master Key System Upgrades

Why Choose BEST Quality?

BEST 1E Series cylinders deliver professional-grade reliability with precision-machined brass or bronze construction and secure diagonal set screw mounting. The interchangeable core system provides flexibility for master key integration and system expansion. Engineered for demanding commercial applications where dependable access control performance is essential.

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-1E64-C4RP3626-PC – Frequently Asked Questions

1) Will a BEST 1E Series mortise cylinder key into our existing BEST master key system?
Yes. The 1E Series uses BEST's interchangeable core system, so it can be master keyed into any existing BEST system. You pick the keyway on the order (WA, WB, WC, WD, WE, WG, WH, WK or WY) and supply the keymark and marking number so the core is cut to your system rather than keyed at random. That is what makes this the part to order when you are expanding an existing facility keying scheme instead of starting a new one.
2) What do I have to specify when ordering a BEST 1E cylinder?
Three things are required and none of them are optional: keyway (WA, WB, WC, WD, WE, WG, WH, WK or WY), keymark, and marking number. The keymark and marking number tie the core to your existing key system records. Beyond that you choose finish, standard or tapered body, the cam or spindle option, and the ring.
3) For an aluminum storefront door with an Adams Rite MS deadlock, do I use the BEST 1E cylinder or an Adams Rite cylinder?
Either path works. The BEST 1E Series cylinder can be ordered with an Adams Rite MS cam, which is what a BEST-keyed storefront needs so the door stays on the same core program as the rest of the building. If the opening does not need to be on a BEST system, the Adams Rite 4036 mortise cylinder is a five-pin Grade 1 cylinder for that application. Where the stile has no room for a lock trim, the Adams Rite 4024 cylinder pull with trim plate mounting and the 4025 five-pin cylinder pull with through-screws are built for the MS1847 deadlock and deadlatch.
4) What is the equivalent to a BEST 1E 6-pin mortise cylinder if the building is keyed to a large format interchangeable core system from Corbin Russwin?
The BEST 1E Series 6-pin mortise cylinder is built around BEST interchangeable core technology and can be master-keyed into an existing BEST system, so it follows a BEST keying program. If the opening is keyed to a Corbin Russwin large format interchangeable core program instead, the Corbin Russwin 1080 Grade 1 Series 1-1/2 inch LFIC mortise cylinder is the 6-pin LFIC mortise housing in that family, supplied with an A01 cloverleaf cam for Schlage L9000 mortise locks. Choose by which keyway family the rest of the building already runs on.
5) I ordered a BEST 1E mortise cylinder but the door takes a rim device. What should I use?
A mortise cylinder threads into a mortise lock housing and will not mount to a rim exit device. For rim applications the BEST 1E configuration is ordered with a rim cylinder ring rather than a mortise ring. Cross-brand rim options include the Schlage 20-057 6-pin FSIC rim cylinder with a convertible tailpiece cam, the Schlage 20-021 with a vertical tailpiece cam or the 20-022 with a horizontal tailpiece cam, and the Corbin Russwin 3070 6-pin rim cylinder housing with a 1-7/8 inch tailpiece. Match the tailpiece orientation and length to the device.
6) If I do not need an interchangeable core, what is a simpler conventional mortise cylinder instead of the BEST 1E?
The BEST 1E Series mortise cylinder is an interchangeable core design, which is what lets you rekey by pulling the core with a control key. If you have no core program to maintain, a conventional keyed mortise cylinder is simpler: the Corbin Russwin 1000 Grade 1 Series mortise cylinder in 1-1/2 inch length with an A02 straight cam, or the Detex MC65 mortise cylinder, a 1-1/8 inch 6-pin commercial cylinder in the Schlage C keyway. Both are fixed-plug cylinders, so rekeying means pinning the cylinder rather than swapping a core.
7) What size is the BEST 1E mortise cylinder and how is it held in the lock?
1-5/32 inch diameter, which is the standard mortise cylinder thread size, so it screws into a conventional mortise lock cylinder pocket. A diagonal set screw through the cylinder wall bears against the housing to hold it in place and stop it being unscrewed from outside.
8) Which cylinder rings can I order with the BEST 1E cylinder, and why do I need one?
Ring choices are 3E Mortise, 6-pin Mortise, 7-pin Mortise, Rim Cylinder and Tapered Cylinder. The ring sets how far the cylinder face sits proud of the door or escutcheon. Too few threads engaged and the cylinder wobbles; too many and the face stands off the trim. Pick the ring that matches your core length and the prep depth you are working into.
9) Is there a tapered version of the BEST 1E mortise cylinder?
Yes, the 1E is ordered as either Standard Mortise or Tapered Mortise. The tapered body is what you want where the trim or escutcheon has a coned cylinder opening, and there is a matching Tapered Cylinder ring to finish it. Standard mortise is the straight-body version for a conventional flat prep.
10) Is the BEST 1E a small format interchangeable core cylinder or a full size one?
The 1E is a BEST interchangeable core mortise cylinder, the 6-pin version with a 1-5/32 inch body. If you are working a Schlage-keyed building instead and need a full size interchangeable core, the Schlage 20-057 FSIC rim cylinder with convertible tailpiece cam is the rim-side equivalent on that platform, and the 20-057-C comes in the C keyway. Those are not interchangeable with BEST cores.
11) Can I use a BEST 1E cylinder on another manufacturer's mortise lock, or should I buy that brand's cylinder?
The BEST 1E Series can be altered with different cams and cylinder rings to work with other manufacturers' locks, which is how a mixed-hardware building is brought onto one BEST core program. If keying consistency is not the goal, buying the cylinder in the lock's own family avoids the cam question: the Corbin Russwin 1000 Grade 1 mortise cylinder ships with an A02 straight cam, the 1070 with an A01 cloverleaf cam, and the Detex MC65 is a 6-pin mortise cylinder in the Schlage C keyway.
12) Will a BEST 1E mortise cylinder replace the cylinder in a key-in-knob or key-in-lever lockset?
No. The BEST 1E Series is a threaded mortise cylinder with a 1-5/32 inch diameter and a diagonal set screw that holds it in a mortise housing, so it fits mortise lock bodies rather than knob or lever chassis. For a key-in-knob or key-in-lever replacement, the Kaba Ilco 1539 Series is a universal key-in-knob and lever cylinder, the 1579 Series is a knob and lever cylinder for Sargent, and the 1599 Series is a key-in-knob replacement cylinder. The Falcon A23161-05 G is a key-in-lever cylinder in a 6-pin G keyway supplied keyed different with two cut keys.
13) What do I use instead of a BEST 1E cylinder on a residential deadbolt or handleset?
The BEST 1E Series is a mortise cylinder for mortise lock housings and is not a deadbolt plug. For deadbolt work, the Kaba Ilco 1549 Series is a key-in-deadbolt cylinder. On residential handlesets and deadbolts, the Medeco 1012040 is a 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts, the 1075127 is a 5-pin lazy motion rim type single cylinder for handlesets and deadbolts, the 1065244 is a 5-pin lazy motion rim cylinder with an Emtek tailpiece, and the 1065140 is a 5-pin retrofit cylinder for the Arrow JL interconnected lock and Emtek handleset and deadbolt outside cylinder.
14) What is the difference between the BEST 1E mortise cylinder and the Corbin Russwin 1070 mortise housing?
Both are 6-pin mortise cylinder housings, and both accept a cam sized to the lock they serve. The BEST 1E Series is 1-5/32 inch in diameter, ships with the standard 1E-C4 cam, and accepts a BEST interchangeable core, with the option of an Adams Rite MS cam or standard spindle and a choice of 3E, 6-pin, 7-pin, rim or tapered rings. The Corbin Russwin 1070 is a 1-1/4 inch Grade 1 6-pin mortise housing supplied with an A01 cloverleaf cam. The decision comes down to which cam the mortise lock body needs and which keying system the opening belongs to.
15) Is the Schlage 20-057-C an interchangeable core substitute for the BEST 1E?
They are both interchangeable core products but they are not interchangeable with each other. The BEST 1E Series is a complete mortise cylinder housing that takes a BEST core and can be master-keyed into an existing BEST system, ordered in BEST keyways WA through WY. The Schlage 20-057-C is a full size interchangeable core in the Schlage C keyway, finished 643E aged bronze. A Schlage C core will not key into a BEST program, and the 20-057-C is a core rather than a mortise housing.
16) 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. If you are matching existing openings across a building, go by the BHMA number stamped on the hardware rather than the finish name, since 626 satin chrome and 630 stainless read similarly on a door but are not the same code.
17) What is the BEST 1E cylinder body made of?
Machined from brass or bronze bar stock. Solid bar stock rather than cast is what keeps the threads and the set screw seat holding up under repeated service, and it is why these hold finish on exterior openings.
18) My Emtek hardware needs a cylinder. Does the BEST 1E work?
Only if the Emtek device accepts a mortise cylinder and the right cam is fitted, since the BEST 1E is a mortise housing that can be altered with different cams and rings for other manufacturers' locks. For Emtek-specific parts, the Emtek CY4 cylinder is sold individually, the Medeco 1065244 is a 5-pin lazy motion rim cylinder supplied with an Emtek tailpiece, and the Medeco 1065140 is a 5-pin retrofit cylinder listed for the Emtek handleset and deadbolt outside cylinder.
19) Which cylinder should I standardize on across a facility with mortise locks in multiple finishes?
The BEST 1E Series mortise cylinder is offered in ten finishes, including 605 bright brass, 606 satin brass, 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, in standard mortise and tapered mortise types, so one core program can be carried across openings with different trim. Single-finish alternatives cover narrower ground: the Schlage 20-057-C interchangeable core is listed in 643E aged bronze. For a facility-wide standard where trim finishes vary, the breadth of the 1E finish range is the deciding factor.
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Can I return it if it doesn’t work for me?
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Does the BEST BES-1E64-C4RP3626-PC come with a warranty?
Absolutely. The BEST BES-1E64-C4RP3626-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-1E64-C4RP3626-PC?
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