BEST 1E Series Standard Core 6...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$212.00
$112.70
BEST BEST 1E Series Standard Core 6-Pin Mortise Cylinder, 1-5/32" Diameter BES-1E6-STANDARD

BEST 1E Series Standard Core 6-Pin Mortise Cylinder with 1-5/32" Diameter

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Model: BES-1E64-C4RP3626-SC
From the E Series Cylinders Collection
$212.00
$112.70
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$212.00
$112.70
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BEST 1E Series Standard Core 6-Pin Mortise Cylinder with 1-5/32" Diameter

Professional Mortise Cylinder Solution

The BEST 1E Series Standard Core 6-Pin Mortise Cylinder delivers reliable security for standard mortise lock applications with its precision 1-5/32" diameter design. Machined from brass or bronze bar stock, this cylinder features BEST's interchangeable core system and includes the standard 1E-C4 cam for seamless integration. The diagonal set screw mounting system provides additional security by holding the cylinder securely in the housing.

Professional Features & Benefits

  • Precision Diameter: 1-5/32" diameter engineered for standard mortise lock applications with exact fit tolerances.
  • Heavy-Duty Construction: Machined from brass or bronze bar stock for exceptional durability and long-term performance in commercial applications.
  • Interchangeable Core System: Features BEST interchangeable core technology allowing integration into existing BEST master key systems.
  • Enhanced Security Design: Diagonal set screw mounts in cylinder wall to securely hold the cylinder in the housing for tamper resistance.
  • Standard Cam Configuration: Includes standard 1E-C4 cam for compatibility with BEST mortise lock mechanisms.
  • Versatile Compatibility: Can be altered with different cams and cylinder rings to function with other manufacturers' locks.
  • Master Key Ready: May be master-keyed into any existing BEST system for comprehensive access control.

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 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
  • Industrial and Warehouse Facilities

Why Choose BEST Quality?

BEST 1E Series cylinders deliver professional-grade reliability with precision-machined brass or bronze construction engineered for demanding commercial applications. The interchangeable core system and diagonal set screw security design provide dependable performance where secure access control is essential. Special cylinder variations and master keying options ensure compatibility with comprehensive security systems.

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-SC – Frequently Asked Questions

1) Will a BEST 1E Series mortise cylinder work in my existing BEST master key system?
Yes. The 1E Series mortise cylinder uses BEST's interchangeable core system, so it can be master-keyed into an existing BEST system and the core pulls with a control key rather than the whole cylinder coming out of the lock. That is the practical reason to specify it over a conventional cylinder: when a tenant turns over or a key walks, you swap cores across the building instead of rekeying each lock. You pick the keyway (A, B, C, D, DD, E, F, G, H, J, K, L, M, N, O, R, TB, TC, TD or TE) so the new cylinder falls into the same system as the doors you already have.
2) What do I have to specify when ordering a BEST 1E mortise cylinder?
Four things beyond finish. Keyway is required, from A, B, C, D, DD, E, F, G, H, J, K, L, M, N, O, R, TB, TC, TD or TE. Keymark and marking number are required text entries, so the cylinder is cut into the right key system and stamped to match your records. Then choose the cam or spindle option (standard cam, Adams Rite MS cam, or standard spindle) and the ring (3E mortise, 6-pin mortise, 7-pin mortise, rim cylinder, or tapered cylinder). Body type is standard mortise or tapered mortise. Getting the keymark wrong is the usual cause of a cylinder that arrives correct on paper and does not work with the building's keys.
3) Will a 1-5/32 inch BEST mortise cylinder fit my mortise lock case?
The 1E Series body is 1-5/32 inches in diameter, which is the standard mortise cylinder thread size, so it threads into a standard mortise lock's cylinder hole. What decides fit is not the diameter but the cam: it ships with the standard 1E-C4 cam, which suits BEST mortise lock mechanisms. If your lock is another maker's, the cylinder can be altered with a different cam and cylinder ring to drive that lock. Length is set by the collar or ring you pick, so measure the lock face to the door face before choosing.
4) My building is not on a BEST key system. Should I still buy a 1E cylinder?
Probably not. The 1E Series earns its keep through the BEST interchangeable core, and that only pays off if you are running or starting a BEST system with control keys and core swapping. For a conventional mortise cylinder on a one-off door, the Corbin Russwin 1000 Series is a Grade 1 mortise cylinder at 1-1/2 inch length with an A02 straight cam, and the 1070 is a 1-1/4 inch 6-pin mortise housing with an A01 cloverleaf cam. If you are on Schlage L9000 mortise locks and want an interchangeable core, the Corbin Russwin 1080 is a 1-1/2 inch LFIC 6-pin cylinder made for those locks.
5) Can a BEST 1E cylinder replace a key-in-knob or deadbolt cylinder?
No. The 1E is a threaded mortise cylinder and it will not fit a knob, lever, or tubular deadbolt. For those, the Kaba Ilco 1539 is a key-in-knob and lever universal cylinder, the 1599 is a key-in-knob replacement cylinder, and the 1549 is a key-in-deadbolt cylinder. The Ilco 1579 is a knob and lever cylinder for Sargent. For a Falcon RU/T Series lever, the A23161-05 G is a 6-pin G keyway cylinder supplied keyed different with two cut keys.
6) Can a BEST 1E mortise cylinder be used on an Adams Rite narrow stile deadlock?
The BEST 1E can be altered with different cams and cylinder rings to work with other manufacturers' locks, and an Adams Rite MS cam is one of the cam options it is configured with. Where the opening calls for a cylinder purpose-built for that hardware instead, the Adams Rite 4036 is a Grade 1 mortise cylinder with five-pin security and a 1/2 inch minimum door thickness. For the MS1847 deadlock and deadlatch specifically, the 4024 is a cylinder pull with trim plate mounting and the 4025 is a five pin tumbler cylinder pull with through-screws - those are pull assemblies for the deadlock rather than a threaded mortise cylinder, so they solve a different part of the opening.
7) Difference between a BEST 1E mortise cylinder and a key-in-knob or key-in-lever replacement cylinder?
A mortise cylinder like the BEST 1E is a threaded body that screws into a mortise lock case and is held by a set screw in the cylinder wall; a key-in-knob or key-in-lever cylinder drops into the knob or lever itself and never touches the lock case. Kaba Ilco covers that side with the 1539 key-in-knob and lever universal cylinder and the 1599 key-in-knob replacement cylinder, with the 1579 knob and lever cylinder built for Sargent hardware. Falcon's A23161-05 G is a key in lever cylinder for the RU/T series in a 6-pin G keyway, keyed different with 2 cut keys. If the cylinder being replaced pulls out of the knob rather than out of the lock body, one of those is the part, not a 1E.
8) What is the closest 6-pin mortise cylinder to a BEST 1E if the door is running Corbin Russwin keying instead?
The Corbin Russwin 1070 is a Grade 1 series 1-1/4 inch 6-pin mortise housing supplied with an A01 cloverleaf cam, which is the same basic part the BEST 1E fills: a 6-pin mortise cylinder body that threads into the lock case and turns the lock hub through a cam. The BEST 1E is built around BEST's interchangeable core system and ships with the standard 1E-C4 cam, so a building already master keyed on BEST cores stays on the 1E, while a building keyed on Corbin Russwin goes to the 1070 housing. The Corbin Russwin 1000 series mortise cylinder in 1-1/2 inch length is the same idea with an A02 straight cam rather than the cloverleaf.
9) The opening needs a rim cylinder for an exit device, not a mortise cylinder - what takes the place of a BEST 1E there?
A mortise cylinder threads into the lock case; a rim cylinder mounts through the door and drives an exit device or rim lock with a tailpiece, so the two are not interchangeable at the opening. For rim applications the Schlage Commercial 20-021 is a 6-pin rim cylinder with a vertical tailpiece cam supplied with 2 keys, and the 20-022 is the same 6-pin rim cylinder with a horizontal tailpiece cam - the tailpiece orientation is dictated by the device being driven. The Corbin Russwin 3070 is a 6-pin rim cylinder housing with a 1-7/8 inch tailpiece. The BEST 1E does offer a Rim Cylinder ring among its ring choices, but the cylinder itself is a mortise body.
10) We want interchangeable core but the facility is standardized on Schlage keying - what is the equivalent of a BEST 1E?
The BEST 1E carries BEST interchangeable core technology and can be master keyed into an existing BEST system, which is what makes it the choice where the core pull is already BEST. Where the keying is Schlage, the Schlage Commercial 20-057 is a 6-pin full size interchangeable core rim cylinder with a convertible tailpiece cam and 2 keys, and the 20-057-C is a full size interchangeable core cylinder in the C keyway with a 643E aged bronze finish. Both keep the interchangeable core advantage - rekey by swapping the core rather than repinning - on Schlage keying rather than BEST, and both are rim rather than mortise bodies.
11) The mortise lock is a Schlage L9000 - does a BEST 1E fit it?
The BEST 1E is built around BEST's own interchangeable core and ships with the 1E-C4 cam, though it can be altered with different cams and cylinder rings to work with other manufacturers' locks. For an L9000 mortise lock where the goal is interchangeable core without adapting a cam, the Corbin Russwin 1080 is a Grade 1 series 1-1/2 inch LFIC mortise cylinder, 6-pin, called out for Schlage L9000 mortise locks and supplied with the A01 Schlage L cam. That is the same 6-pin mortise format as the 1E with the cam already matched to the L9000 hub.
12) I need to match the finish on the other doors in the building. What finishes does the BEST 1E mortise cylinder come in?
Ten: 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 commercial building standardized on satin chrome trim, 626 is the match; 626 and 630 are the two most common commercial finishes, and on a cylinder the visible part is only the face and ring, so a near match on an interior door is usually acceptable where an exact one is not available.
13) Can I order a BEST 1E as a rim cylinder for an exit device instead of a mortise cylinder?
The ring options include a rim cylinder ring, so the 1E core assembly can be set up for rim use. If what you actually need is a purpose-built rim cylinder for a panic device, look at the Schlage 20-021 (6-pin, vertical tailpiece cam) or the 20-022 (6-pin, horizontal tailpiece cam), where the tailpiece orientation is stated up front. The Corbin Russwin 3070 is a 6-pin rim cylinder housing with a 1-7/8 inch tailpiece. Tailpiece orientation and length are what decide whether a rim cylinder drives your device.
14) How is the BEST 1E mortise cylinder held in the lock, and can it be twisted out?
A diagonal set screw seats in the cylinder wall and clamps the cylinder in the housing, so it cannot be spun back out of the lock case by hand from the outside. The body is machined from brass or bronze bar stock. On an exterior opening exposed to attack, back that up with a cylinder guard ring, since the set screw resists turning, not pulling.
15) Is a BEST 1E a 6-pin or 7-pin cylinder, and can I put a 7-pin core in it?
It is a 6-pin cylinder. The ring choices do include a 7-pin mortise ring, because a 7-pin core is longer and needs a deeper collar to sit flush, so if your facility standardized on 7-pin BEST cores you need to match ring and core depth rather than dropping a 7-pin core into a 6-pin setup. Facilities that run 6-pin and 7-pin side by side should confirm which depth the rest of the doors use before ordering, since the two are not interchangeable in the same housing.
16) Is a 5-pin cylinder an acceptable substitute for a 6-pin BEST 1E?
The BEST 1E is a 6-pin cylinder, and pin count has to match the key system it is being brought into - a 5-pin cylinder cannot be pinned to a 6-pin bitting. Several of the common alternates are 5-pin: the Adams Rite 4036 mortise cylinder is five-pin, as are the 4025 and 4026 cylinder pulls. On the Medeco side the 1065140 is a 5-pin retrofit cylinder for the Arrow JL interconnected lock and Emtek handleset and deadbolt outside cylinder, the 1065244 is a 5-pin rim lazy motion cylinder with an Emtek tailpiece, and the 1075127 is a 5-pin rim type lazy motion single cylinder for handlesets and deadbolts. The Medeco 1012040 is the 6-pin one in that group, a lazy motion rim cylinder for Kwikset single cylinder deadbolts.
17) Replacing the cylinder in an Emtek handleset - does a BEST 1E work?
A BEST 1E is a threaded mortise cylinder for a mortise lock case, so it is not the part that comes out of an Emtek handleset. Emtek's own CY4 cylinder is sold each. Medeco covers the same hardware two ways: the 1065140 is a 5-pin retrofit cylinder for the Arrow JL interconnected lock and the Emtek handleset and deadbolt outside cylinder, and the 1065244 is a 5-pin rim lazy motion rim type cylinder supplied with an Emtek tailpiece. Which of those applies depends on whether the handleset takes a rim style cylinder with a tailpiece or the outside retrofit cylinder.
18) Is a deadbolt cylinder the same part as a BEST 1E mortise cylinder?
No - a deadbolt cylinder drives a deadbolt directly and is not a threaded mortise body. Kaba Ilco's 1549 is a key-in-deadbolt cylinder, and the 1539, 1579 and 1599 are also listed for deadbolt function on knob and lever hardware. On the Medeco side the 1012040 is a 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts and the 1075127 is a 5-pin rim type lazy motion single cylinder for handlesets and deadbolts. The BEST 1E goes into a mortise lock case and turns it through the 1E-C4 cam, so a deadbolt opening takes one of the deadbolt cylinders instead.
19) Wood door with an Adams Rite deadlock - what cylinder part goes with it?
The Adams Rite 4026 is a five pin tumbler cylinder pull built for the 5017 wood door deadlock and deadlatch, which is the wood door counterpart to the 4025 five pin tumbler cylinder pull with through-screws for the MS1847. Both are cylinder pulls that mount to the door face rather than threaded mortise cylinders, so they answer a different question than a BEST 1E, which threads into a mortise lock case and is held by a diagonal set screw in the cylinder wall.
20) Is the BEST 1E cylinder a replacement part or a complete lock?
It is a replacement cylinder only, not a lock. You are buying the keyed cylinder that threads into an existing mortise lock case, plus the ring and cam you specify. The lock body, trim, and latch come separately. If the mortise lock itself is worn out, replacing the cylinder will not fix a sticking bolt or loose lever.
21) Where do I find service and rekeying instructions for BEST E Series cylinders?
BEST publishes an E Series Service Manual covering the E Series cylinder line, which is the reference for core removal, pinning, and cam changes on the 1E. Keep it with your key records, since the control key procedure is what a maintenance tech needs the first time they pull a core.
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Does the BEST BES-1E64-C4RP3626-SC come with a warranty?
Absolutely. The BEST BES-1E64-C4RP3626-SC is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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