BEST 1E Series 6-Pin Mortise C...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$111.00
$78.27
BEST 1E Series 6-Pin Mortise Cylinder Less Core, 1-5/32" Diameter BES-1E6-LESSCORE

BEST 1E Series 6-Pin Mortise Cylinder Less Core with SFIC Preparation

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Model: 1E64-C4RP3626-LC
From the E Series Cylinders Collection
$111.00
$78.27
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$111.00
$78.27
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BEST 1E Series 6-Pin Mortise Cylinder Less Core with SFIC Preparation

Professional Mortise Cylinder Component for BEST Interchangeable Core Systems

The BEST 1E Series 6-Pin Mortise Cylinder Less Core provides professional-grade security hardware for standard mortise lock applications. This cylinder features a 1-5/32" diameter construction machined from brass or bronze bar stock and includes SFIC (Small Format Interchangeable Core) preparation for use with BEST interchangeable core systems. The cylinder includes a standard 1E-C4 cam and diagonal set screw mounting for secure installation in mortise lock housings.

Professional Features & Benefits

  • Precision Dimensions: 1-5/32" diameter design engineered for standard mortise lock applications with exact fit tolerances.
  • Premium Construction: Machined from brass or bronze bar stock for exceptional durability and corrosion resistance in commercial applications.
  • SFIC Core Compatibility: Prepared for BEST Small Format Interchangeable Core systems allowing for easy rekeying and master key integration.
  • Secure Mounting System: Diagonal set screw mounts in cylinder wall to hold the cylinder securely in the lock housing preventing unauthorized removal.
  • Standard Cam Configuration: Includes 1E-C4 cam for compatibility with BEST mortise lock mechanisms and proper lock operation.
  • System Integration: May be master-keyed into any existing BEST system for comprehensive access control management.
  • Versatile Applications: Compatible with other manufacturers' locks through use of different cams and cylinder rings for flexible installation options.

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 lock installation instructions and manufacturer documentation for proper integration. Ensure compatibility with existing hardware and verify cam configuration requirements before installation. The diagonal set screw must be properly tightened to secure the cylinder in the lock housing.

Professional Applications

  • Commercial Office Building Security
  • Educational Facility Access Control
  • Healthcare Institution Lock Systems
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings
  • Retail Establishment Security
  • Industrial Facility Access Points

Why Choose BEST Quality?

BEST 1E Series cylinders deliver professional-grade security with precision-machined brass or bronze construction designed for demanding commercial applications. The interchangeable core system provides flexible master keying options while the diagonal set screw mounting ensures secure installation. Engineered for reliable performance in standard mortise lock applications where dependable access control 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 1E64-C4RP3626-LC – Frequently Asked Questions

1) Does the BEST 1E mortise cylinder come with a core, or do I need to order one separately?
No core is included. The 1E Series 6-pin mortise cylinder is a less-core housing, prepped for a BEST small format interchangeable core (SFIC), so you supply the core from your own keying system. That is the point of it: the housing goes in the mortise lock, and your locksmith drops in a core that is already master keyed into your existing BEST system. If you need a complete keyed cylinder out of the box rather than a housing, this is the wrong part.
2) Will a BEST 1E cylinder work in a non-BEST mortise lock, like a Schlage or Sargent?
It can, but only with the right cam and ring. The 1E housing ships with the standard 1E-C4 cam, which is what BEST mortise lock mechanisms expect. For other manufacturers' locks you change the cam and the cylinder ring; an Adams Rite MS cam is one of the ordering options, along with the standard cam and a standard spindle. What the cam does not fix is the keyway: the core you drop in has to be a BEST small format interchangeable core, so the opening ends up on BEST keying regardless of whose lock body it sits in.
3) What diameter is the BEST 1E mortise cylinder, and which mortise prep does it fit?
The cylinder body measures 1-5/32 inches in diameter, which is the standard mortise cylinder bore, so it seats in a normal mortise lock cylinder hole. Two body types are offered: a 1-1/4 inch standard mortise and a 1-1/8 inch tapered mortise. The tapered version is the one to pick when the trim or escutcheon is cut for a tapered cylinder rather than a straight one.
4) Can I add BEST 1E cylinders to a building that is already on a BEST master key system?
Yes. Because the housing is less core and takes a BEST small format interchangeable core, the opening picks up whatever keying your existing BEST system already uses, master and grand master included. For a facility standardizing doors one at a time, that means you buy the housings in the finish you need and keep the cores on the same system, and rekeying later is a core swap with a control key rather than a lock teardown.
5) I need a mortise cylinder for an Adams Rite MS deadlock. Does the BEST 1E work?
Order it with the Adams Rite MS cam, which is one of the listed cam options; that is the cam an MS deadlock needs to drive the bolt. You still supply a BEST SFIC core. If you would rather stay on Adams Rite's own hardware, the Adams Rite 4036 mortise cylinder is a five-pin Grade 1 unit with a 1/2 inch minimum door thickness, and the 4024 and 4025 cylinder pulls are built specifically for MS1847 deadlock and deadlatch systems.
6) What is the difference between a less-core SFIC mortise cylinder and a conventional keyed mortise cylinder?
A less-core housing like the 1E is empty until you insert a small format interchangeable core, so rekeying an opening means pulling the core with a control key, a few seconds per door. A conventional cylinder is pinned inside the body, and rekeying means taking the cylinder out and repinning it. Conventional options include the Corbin Russwin 1000 Series Grade 1 mortise cylinder at 1-1/2 inch length with an A02 straight cam, and the Detex MC65, a 1-1/8 inch six-pin mortise cylinder on Schlage C keyway. If you own a single building and never rekey, conventional is simpler. If you turn tenants or lose keys regularly, interchangeable core pays for itself.
7) My hardware is on Schlage or Corbin Russwin interchangeable core, not BEST. What should I order instead?
The 1E housing takes BEST small format cores only, so it will not join a Schlage or Corbin Russwin core system. For Schlage full size interchangeable core, the 20-057 six-pin FSIC rim cylinder with convertible tailpiece cam, or the 20-057-C FSIC core in C keyway and 643E aged bronze, stay on that platform. For Corbin Russwin, the 1080 Series is a 1-1/2 inch six-pin LFIC mortise cylinder with an A01 cam, built for Schlage L9000 mortise locks, and the 1070 is a 1-1/4 inch six-pin mortise housing with an A01 cloverleaf cam.
8) I am replacing a worn BEST mortise cylinder but keeping the lock and the keys. Will this drop in?
That is exactly what the 1E housing is for. Pull the old cylinder, back out the set screw, thread the new housing in, transfer your existing BEST core, and the keys keep working because the keying lives in the core and not in the housing. Match the type to what came out, standard 1-1/4 inch mortise or 1-1/8 inch tapered, keep the same cam so the lock throws the same way, and pick the ring that brings the face flush with the trim.
9) The opening takes a rim cylinder, not a mortise cylinder - what is the right part?
For a rim device, the Schlage Commercial 20-021 is a 6-pin rim cylinder with a vertical tailpiece cam and two keys, and the Schlage 20-022 is the same 6-pin rim cylinder with a horizontal tailpiece cam and two keys; the tailpiece orientation is dictated by the exit device. The Corbin Russwin 3070 is a 6-pin rim cylinder housing with a 1-7/8 inch tailpiece. The BEST 1E Series is a mortise-format cylinder that threads into a mortise lock housing and is held by a diagonal set screw, though a rim cylinder ring is among the ring options ordered alongside it.
10) What is the closest 6-pin mortise cylinder to the BEST 1E Series if the lock needs a conventional keyed cylinder rather than a BEST interchangeable core?
The Corbin Russwin 1070 Grade 1 Series 1-1/4 inch 6-pin mortise housing with the A01 cloverleaf cam covers the same 6-pin mortise position, and the Corbin Russwin 1000 Grade 1 Series mortise cylinder in 1-1/2 inch length uses an A02 straight cam. The BEST 1E Series is supplied less core with SFIC preparation and a 1E-C4 cam, so it is keyed by dropping in a BEST small format interchangeable core, while the Corbin Russwin housings are ordered against their own cam callout. Match the cam to the mortise lock body before ordering either.
11) What cylinder works with an Adams Rite MS deadlock on an aluminum storefront door?
The BEST 1E Series can be ordered with an Adams Rite MS cam, which is one of its cam options alongside the standard cam and standard spindle, and it is also offered in a 1-1/8 inch tapered mortise type that suits the shallow stile prep. The Adams Rite 4036 mortise cylinder is a five-pin Grade 1 cylinder with a 1/2 inch minimum door thickness. For the MS1847 deadlock where the door needs a pull as well as a cylinder, the Adams Rite 4024 cylinder pull mounts with a trim plate and the 4025 is a five-pin tumbler cylinder pull with through-screws.
12) Which mortise cylinder suits a Schlage L9000 mortise lock?
The Corbin Russwin 1080 Grade 1 Series is a 1-1/2 inch LFIC mortise cylinder, 6-pin, for Schlage L9000 mortise locks, with an A01 Schlage L cam. The BEST 1E Series is compatible with other manufacturers' locks through the use of different cams and cylinder rings, and it is offered in 1-1/4 inch standard mortise and 1-1/8 inch tapered mortise types with 6-pin and 7-pin mortise ring options. The deciding factor is the cam: the Corbin Russwin arrives with the Schlage L cam fitted, while the 1E carries a 1E-C4 cam as standard.
13) How is a BEST 1E mortise cylinder held in the lock, and can it be pulled out?
A set screw runs diagonally through the cylinder wall and clamps the housing in the mortise lock body, which is what stops the cylinder being unscrewed or pulled from outside the door. It has to be properly tightened at install; a loose set screw is the usual reason a mortise cylinder turns in its hole or backs out over time.
14) Is the BEST 1E a six-pin or seven-pin cylinder, and does it matter for my cores?
It is a six-pin housing, and the pin count has to match the cores you already stock. A seven-pin BEST core will not seat correctly in a six-pin housing prep. Rings are offered for six-pin mortise, seven-pin mortise, and 3E mortise, so confirm which stack your building runs on before you order in quantity; large institutional BEST systems are frequently on seven-pin.
15) What replaces the cylinder in a key-in-knob or key-in-lever lock, since the BEST 1E is a mortise cylinder?
A key-in-knob or key-in-lever body takes a knob cylinder, not a mortise cylinder. The Kaba Ilco 1539 Series is a key-in-knob and lever universal cylinder, the 1579 Series is a knob and lever cylinder for Sargent, and the 1599 Series is a key-in-knob replacement cylinder. For a keyed lever from Falcon, the A23161-05 G is a key-in-lever cylinder in the RU/T Series 6-pin G keyway, keyed different with two cut keys. The BEST 1E Series threads into a mortise lock case and carries a 1E-C4 cam, so it does not fit a knob or lever chassis.
16) Is a mortise cylinder the correct replacement for a deadbolt cylinder?
Not on most residential-style deadbolts. The Kaba Ilco 1549 Series is a key-in-deadbolt cylinder, and 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. Those drive a bolt through a tailpiece; the BEST 1E Series drives a mortise lock through a cam and mounts inside a mortise lock housing.
17) What cylinder retrofits an Emtek handleset or an Arrow JL interconnected lock?
The Medeco 1065140 is a 5-pin retrofit cylinder for the Arrow JL interconnected lock and for the Emtek handleset and deadbolt outside cylinder, and the Medeco 1065244 is a 5-pin rim lazy motion rim type cylinder with an Emtek tailpiece. Emtek also lists the CY4 cylinder, sold each. The BEST 1E Series is a mortise-format housing supplied less core for BEST small format interchangeable cores, so it is specified where the door already carries a mortise lock case.
18) What is the difference between the BEST 1E Series mortise cylinder and the Detex MC65?
The Detex MC65 is a mortise cylinder in a Schlage C keyway, 1-1/8 inch, 6-pin commercial grade - it arrives keyed to that keyway. The BEST 1E Series is supplied less core with SFIC preparation, so the keying is set by whichever BEST small format core is installed and it can be master keyed into an existing BEST system. Both are mortise-format 6-pin cylinders; the choice follows which key system the building runs.
19) For a wood door with an Adams Rite 5017 deadlock, what cylinder pull is used?
The Adams Rite 4026 is a five-pin tumbler cylinder pull designed for the Adams Rite 5017 wood door deadlock and deadlatch, where the aluminum-door equivalents are the 4024, which mounts with a trim plate for the MS1847 deadlock, and the 4025, which uses through-screws for the same MS1847. These are pull-and-cylinder assemblies for the face of the door, a different part from a mortise cylinder that seats inside a mortise lock housing like the BEST 1E Series.
20) Can a rim cylinder housing be used in place of a mortise cylinder if the pin count matches?
No - pin count is not what makes them interchangeable. The Corbin Russwin 3070 is a 6-pin rim cylinder housing with a 1-7/8 inch tailpiece and the Schlage 20-021 is a 6-pin rim cylinder with a vertical tailpiece cam, both driving through a tailpiece that passes to the back of the device. The BEST 1E Series is a 1-5/32 inch diameter threaded mortise cylinder held by a diagonal set screw in the lock wall and turning a 1E-C4 cam. A 6-pin rim housing and a 6-pin mortise cylinder are not substitutes for each other.
21) Which of these cylinders carry a stated Grade 1 rating for a spec that calls for it?
Among the mortise-format options, the Adams Rite 4036 five-pin mortise cylinder is Grade 1, the Corbin Russwin 1000 Series mortise cylinder in 1-1/2 inch length with the A02 straight cam is a Grade 1 Series part, and the Corbin Russwin 1070 1-1/4 inch 6-pin mortise housing and 1080 1-1/2 inch LFIC mortise cylinder are both Grade 1 Series. Confirm the cam callout against the lock body separately, since the grade does not settle cam fit.
22) What finishes are available on BEST 1E mortise cylinders to match the rest of my door hardware?
Ten finishes are offered, by BHMA number: 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. Match the number rather than the name when you are trying to blend with existing openings, since 626 satin chrome and 630 stainless read similarly on a door but are not the same finish.
23) What is the cylinder made of, and will it hold up on an exterior door?
The housing is machined from brass or bronze bar stock, which is why it resists corrosion on exterior and high-traffic commercial openings rather than pitting the way a plated pot-metal body does. It is used across office, education, healthcare, multi-tenant residential, government, retail, and industrial openings.
How fast can I get the BEST 1E64-C4RP3626-LC delivered?
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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 1E64-C4RP3626-LC come with a warranty?
Absolutely. The BEST 1E64-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 1E64-C4RP3626-LC?
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