BEST 1E Series Premium Core 7-...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$229.00
$207.18
BEST BEST 1E Series Premium Core 7-Pin Mortise Cylinder, 1-5/32" Diameter BES-1E7-PREMIUM

BEST 1E Series Premium Core 7-Pin Mortise Cylinder with 1-5/32" Diameter

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Model: BES-1E74-C4RP3626-PC
From the E Series Cylinders Collection
$229.00
$207.18
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$229.00
$207.18
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BEST 1E Series Premium Core 7-Pin Mortise Cylinder with 1-5/32" Diameter

Professional Mortise Cylinder with Interchangeable Core Technology

The BEST 1E Series Premium Core 7-Pin Mortise Cylinder delivers professional-grade security for standard mortise lock applications with its precision 1-5/32" diameter design. This premium cylinder features BEST's interchangeable core system and can be master-keyed into any existing BEST system. Machined from brass or bronze bar stock, the cylinder includes a diagonal set screw for secure mounting and is compatible with standard 1E-C4 cam configuration.

Professional Features & Benefits

  • Precision Diameter: 1-5/32" diameter engineered for standard mortise lock applications with exact fit tolerances.
  • 7-Pin Configuration: Premium 7-pin tumbler system provides enhanced security and expanded master keying capabilities.
  • Interchangeable Core System: BEST interchangeable core technology allows for easy rekeying and integration into existing BEST master key systems.
  • Premium Construction: Machined from brass or bronze bar stock for exceptional durability and long-term performance in commercial applications.
  • Secure Mounting: Diagonal set screw mounts in cylinder wall to hold the cylinder securely in the housing, preventing unauthorized removal.
  • Universal Compatibility: Standard 1E-C4 cam configuration with ability to alter for other manufacturers' locks using different cams and cylinder rings.
  • 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 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
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Choose BEST Quality?

BEST 1E Series cylinders deliver professional-grade reliability with precision machining from brass or bronze bar stock for demanding commercial applications. The interchangeable core system and diagonal set screw mounting provide both security and serviceability. Engineered for dependable performance where comprehensive access control and master key system integration are 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-1E74-C4RP3626-PC – Frequently Asked Questions

1) Will a BEST 1E Series mortise cylinder work in my existing BEST master key system?
Yes. The BEST 1E Series premium core mortise cylinder uses BEST's interchangeable core system and can be master-keyed into any existing BEST system, so it drops into a facility already keyed on BEST without rebuilding the key schedule. The core pulls with a control key for rekeying, which is what makes standardizing a building on one system practical. Keyway is specified when you order, from WA, WB, WC, WD, WE, WG, WH, WK or WY, and it has to match the keyway already in use on your system.
2) What cam does the BEST 1E mortise cylinder come with, and can I use it on a non-BEST mortise lock?
Standard configuration is the 1E-C4 cam. The cylinder can be altered for other manufacturers' locks by changing the cam and cylinder ring, so it is not locked to BEST housings, but you have to specify the right cam for the lock you are going into. Cam and spindle choices at order time are Standard Cam, Standard Spindle, or the Adams Rite MS Cam for Adams Rite MS deadlock applications.
3) Is the 1-5/32 inch diameter on the BEST 1E cylinder the standard mortise cylinder size?
1-5/32 inch is the BEST mortise cylinder diameter, and it is the figure to check against the cylinder hole in your mortise lock face or escutcheon before ordering. It is not the same as the 1-1/8 inch class of mortise cylinder some other brands build to, such as the Detex MC65. If your opening was originally BEST, the 1-5/32 inch body is what came out of it.
4) What is the difference between a 6-pin and a 7-pin BEST cylinder, and do I need 7-pin?
The 7-pin tumbler system gives more master keying levels and more differs than a 6-pin core, which is why large facilities on a deep master key schedule run 7-pin. The critical point is that a 7-pin BEST core and a 6-pin BEST core are not interchangeable within the same system: the keys are cut on different pin counts. Match whatever your building is already keyed to. Ring selection also follows pin count, with 6-pin mortise, 7-pin mortise, 3E mortise, rim cylinder and tapered cylinder rings all offered.
5) What do I have to specify when ordering a BEST 1E mortise cylinder?
Four things are required beyond finish: keyway (WA, WB, WC, WD, WE, WG, WH, WK or WY), keymark, marking number, and the ring and cam for the housing you are going into. Keymark and marking number are what tie the cylinder into your existing BEST key system, so pull them off a key or an existing core before you order. Skip them and the cylinder arrives on the wrong system.
6) I need a mortise cylinder but I am not on a BEST system. What else is there?
If the building is not keyed BEST, an interchangeable core cylinder buys you nothing and costs more. For a conventional mortise cylinder, 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 Series is a 1-1/4 inch six-pin mortise housing with an A01 cloverleaf cam. If you are going into Schlage L9000 mortise locks and want interchangeable core, the Corbin Russwin 1080 is a 1-1/2 inch LFIC six-pin cylinder built for those locks with the A01 Schlage L cam. Match cam style to the lock first, then length.
7) Can I use a BEST 1E cylinder on an Adams Rite MS deadlock in an aluminum storefront door?
Yes, by ordering it with the Adams Rite MS Cam option. That cam drives the MS deadlock mechanism rather than a standard mortise lock hub. If you would rather keep the whole assembly Adams Rite, the 4036 mortise cylinder is a Grade 1 five-pin unit built for those applications, and the 4024 and 4025 cylinder pulls are made specifically for MS1847 deadlock and deadlatch systems. The reason to go BEST instead is if the storefront needs to sit on the same interchangeable core master key system as the rest of the building.
8) The exit device takes a rim cylinder, not a mortise cylinder. What replaces a BEST 1E there?
A rim application needs a rim 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 6-pin 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. Tailpiece orientation is what the device dictates, so match vertical or horizontal to the exit device. The BEST 1E is a mortise cylinder and does not thread into a rim housing, though the BEST 1E family does include a rim cylinder ring option.
9) What is the closest equivalent to a BEST 1E mortise cylinder if the mortise lock is on a Corbin Russwin key system?
For a Corbin Russwin mortise lock, the Corbin Russwin 1000 Grade 1 Series mortise cylinder is the direct counterpart. It is a 1-1/2 inch length cylinder with an A02 straight cam. The BEST 1E cylinder is a 7-pin mortise cylinder built around BEST interchangeable core technology, so it keys into an existing BEST system, while the CR1000 keys into the Corbin Russwin 1000 system. Choose by whichever master key system the building already runs.
10) What interchangeable core cylinder should I use on a Schlage keyway instead of a BEST 1E?
The Schlage Commercial 20-057-C is a full size interchangeable core cylinder in the C keyway, supplied in 643E aged bronze. It gives the same pull-and-swap core serviceability as the BEST 1E interchangeable core system but on Schlage keying rather than BEST. The BEST 1E is a mortise cylinder; the 20-057-C is an FSIC core, so confirm which body the opening actually needs before ordering.
11) I have Schlage L9000 mortise locks. Can I use a BEST 1E cylinder in them?
For Schlage L9000 mortise locks there is a purpose-built option: the Corbin Russwin 1080 is a 1-1/2 inch LFIC mortise cylinder, 6-pin, made for Schlage L9000 mortise locks with the A01 Schlage L cam. The BEST 1E ships with the standard 1E-C4 cam and can be altered for other manufacturers' locks using different cams and cylinder rings, so it can be adapted, but the cam and ring have to be specified for the L9000 rather than assumed.
12) Is a key-in-knob replacement cylinder the same thing as a mortise cylinder?
No, and this is the most common wrong substitution. The Kaba Ilco 1599 is a key-in-knob replacement cylinder and the 1539 is a key-in-knob/lever universal cylinder; the Falcon A23161-05 G is a key-in-lever cylinder in the RU/T Series 6-pin G keyway. Those drop into the knob or lever itself and are not threaded mortise cylinders. A mortise lock case takes a threaded mortise cylinder like the BEST 1E, which mounts with a diagonal set screw through the cylinder wall into the housing.
13) How is the BEST 1E mortise cylinder held in the lock, and can it be twisted out?
A diagonal set screw mounted in the cylinder wall holds the cylinder in the housing, which is what resists a cylinder being unscrewed or pulled from the outside. The cylinder body is machined from brass or bronze bar stock rather than cast, so the threads hold up under repeated core service on high-traffic openings.
14) What finishes does the BEST 1E mortise 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. Those are BHMA finish numbers, so if you know the number on the lever or escutcheon already on the door, order the cylinder to the same number and the collar will match across the fleet.
15) Is a BEST interchangeable core the same thing as a Schlage full size interchangeable core?
No, and they are not cross-compatible. Both are removable-core systems, but the core geometry and keyways differ, so a BEST 1E core does not seat in a Schlage FSIC housing and a Schlage FSIC core such as the 20-057-C in C keyway does not seat in a BEST housing. Pick one system per building and stay on it. If the existing cores pull out with a control key and the keys are stamped with a BEST keyway letter like WA or WC, you are on BEST.
16) Can a locksmith rekey the BEST 1E cylinder on site instead of replacing it?
Yes, that is the point of the interchangeable core design. Rather than pulling the cylinder out of the mortise lock, the core comes out with a control key and a recombinated core goes in, so a tenant turnover on a multi-tenant building is a few seconds per door with no lock disassembly. The cylinder body itself, with its diagonal set screw and 1E-C4 cam, stays in the lock. BEST's own E Series service manual covers the core servicing procedure.
17) What is a simpler 6-pin mortise cylinder alternative if I do not need interchangeable core?
If the opening does not need a removable core, the Detex MC65 is a 6-pin mortise cylinder in the Schlage C keyway with a 1-1/8 inch diameter, and the Corbin Russwin 1070 is a 1-1/4 inch 6-pin mortise housing with an A01 cloverleaf cam. Both are fixed-pinned mortise cylinders rekeyed at the bench. The BEST 1E is a 7-pin cylinder with a 1-5/32 inch diameter whose core pulls with a control key. Diameter differs across all three, so confirm the lock case pocket.
18) What do I order for a Sargent key-in-lever opening instead of a mortise cylinder?
For a Sargent knob or lever, the Kaba Ilco 1579 is a knob and lever cylinder made for Sargent. It replaces the cylinder inside the lever, which is a different part from the threaded mortise cylinder a mortise lock case takes. The BEST 1E is the mortise cylinder side of that split, ordered in a 7-pin mortise, 6-pin mortise, 3E mortise or tapered cylinder ring depending on the housing.
19) What replaces a mortise cylinder on a residential handleset or deadbolt?
Handlesets and deadbolts generally use a rim-type lazy motion cylinder rather than a threaded mortise cylinder. The Medeco 1075127 is a 5-pin rim type lazy motion single cylinder for handlesets and deadbolts, the 1012040 is a 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts, and the 1065244 is a 5-pin rim lazy motion cylinder with an Emtek tailpiece. The Emtek CY4 cylinder is the Emtek-branded part. None of these interchange with a BEST 1E mortise cylinder; the tailpiece has to match the deadbolt.
20) The opening is an Adams Rite MS1847 deadlock on a narrow stile door and there is no cylinder pull. What do I need?
That opening takes a cylinder pull, which is a pull handle with the cylinder built into it. The Adams Rite 4024 is a cylinder pull with trim plate mounting for MS1847 deadlock systems, and the 4025 is a five pin tumbler cylinder pull with through-screws for the MS1847. For a wood door deadlock, the Adams Rite 4026 is a five pin tumbler cylinder pull for the 5017 wood door deadlock/deadlatch. A BEST 1E mortise cylinder is only the cylinder, so it does not solve an opening that also needs the pull, though the 1E is available with an Adams Rite MS cam where a pull already exists.
21) I need a rim cylinder that accepts an interchangeable core rather than a fixed rim cylinder. What are the options?
The Schlage Commercial 20-057 is a 6-pin FSIC rim cylinder with a convertible tailpiece cam and two keys, so the core pulls out for rekeying and the tailpiece converts to suit the device. That is the rim-side counterpart to the interchangeable core arrangement on the BEST 1E. The fixed alternatives are the Schlage 20-021 and 20-022 rim cylinders, which are pinned in the housing.
22) Which mortise cylinder carries an ANSI Grade 1 rating for a spec that calls one out?
Among mortise cylinders, the Adams Rite 4036 is rated Grade 1 and has a 1/2 inch minimum door thickness. The Corbin Russwin 1000, 1070 and 1080 are Grade 1 Series mortise cylinders. If the drawing calls for a Grade 1 cylinder by name, those are the parts to cite. Where the spec instead calls for interchangeable core keying, the BEST 1E is the cylinder that master keys into an existing BEST system.
23) Can I standardize a whole facility's finishes on one cylinder line across mortise and rim openings?
The BEST 1E is ordered in ten architectural finishes including 605 bright brass, 606 satin brass, 612 satin bronze, 619 satin nickel, 622 matte black, 625 bright chrome, 626 satin chrome and 690 statuary dark bronze, across mortise and tapered mortise types. Peer parts are narrower on finish; the Schlage 20-057-C, for instance, is specified in 643E aged bronze. If matching finish across a building matters, that breadth is the practical difference.
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Does the BEST BES-1E74-C4RP3626-PC come with a warranty?
Absolutely. The BEST BES-1E74-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-1E74-C4RP3626-PC?
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