BEST 1EC Series Square Head Mo...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$286.00
$261.31
BEST BEST 1EC Series Square Head Mortise Cylinder with Premium Core, 1-5/32" Diameter BES-1EC-PREMIUM

BEST 1EC Series Square Head Mortise Cylinder with Premium Core - 1-5/32" Diameter

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Model: BES-1EC6C4-C4RP3626-PC
From the E Series Cylinders Collection
$286.00
$261.31
Selected Finish is

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

$286.00
$261.31
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BEST 1EC Series Square Head Mortise Cylinder with Premium Core - 1-5/32" Diameter

Professional Mortise Cylinder Solution

The BEST 1EC Series Square Head Mortise Cylinder delivers professional-grade security with premium core technology in a compact 1-5/32" diameter design. This solid brass or bronze cylinder features precise 6-pin (1-1/4" length) or 7-pin (1-13/32" length) configurations for versatile security applications. The package includes a special 5/8" slip ring for enhanced installation flexibility, making it ideal for mortise lock systems requiring reliable cylinder replacement or upgrade.

Professional Features & Benefits

  • Precision Diameter: 1-5/32" diameter ensures proper fit in standard mortise lock applications for reliable operation.
  • Flexible Pin Configurations: Available in 6-pin (1-1/4" length) or 7-pin (1-13/32" length) options to match specific security requirements.
  • Premium Construction: Solid brass or bronze material provides exceptional durability and corrosion resistance for long-term performance.
  • Enhanced Installation Package: Includes special 5/8" slip ring (R1010) with additional ring lengths available for various applications.
  • Square Head Design: Professional square head configuration ensures secure cam engagement and reliable lock operation.
  • Premium Core Technology: Advanced core design delivers superior security performance and smooth key operation.

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: 1EC Series
  • Subcategory: Parts and Accessories

Installation & Operation

This cylinder component is designed for use with compatible 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

  • Mortise Lock System Upgrades
  • Residential Security Enhancement
  • Multi-Family Housing Applications
  • Property Management Cylinder Replacement
  • Locksmith Service and Repair
  • Security System Maintenance

Why Choose BEST Quality?

BEST 1EC Series cylinders deliver professional-grade reliability with solid brass or bronze construction engineered for demanding residential applications. The premium core technology and precision manufacturing ensure dependable performance where secure access control is essential. Comprehensive service documentation and technical support provide added confidence for professional installations.

Manufacturer Resources

E Series Service Manual

Product Specs

Series:
1EC 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-1EC6C4-C4RP3626-PC – Frequently Asked Questions

1) Will the BEST 1EC cylinder fit a standard mortise lock prep?
The 1EC is built to the 1-5/32 inch cylinder diameter used in standard mortise lock applications, so it threads into a conventional mortise cylinder hole. Projection is adjusted with rings rather than by changing cylinders: a 5/8 inch slip ring (R1010) ships with it, and additional ring lengths are offered so the face sits flush with the trim.
2) Which cam options are available on the BEST 1EC mortise cylinder?
Three drive choices: a standard cam, a standard spindle, or an Adams Rite MS cam. The Adams Rite MS cam is the one to pick if the cylinder is driving an Adams Rite MS deadlock in an aluminum storefront door; the standard cam suits conventional mortise lock cases. The cam is selected at order time, so specify it up front.
3) What do I have to specify when ordering a BEST 1EC cylinder?
Four things beyond finish. Keyway, chosen from WA, WB, WC, WD, WE, WG, WH, WK or WY. Keymark and marking number, both entered as text so the cylinder is keyed into your existing BEST system. Cam or spindle option. Then pin count, 6-pin or 7-pin, and the ring type. Getting the keyway and keymark right is what makes the cylinder operate on keys already in your building.
4) I need a cylinder for an Adams Rite MS deadlock in an aluminum storefront - is the BEST 1EC the right part or should I use an Adams Rite cylinder?
Both routes work. The BEST 1EC mortise cylinder can be ordered with an Adams Rite MS cam, which is the cam profile the MS deadlock family expects, so you keep the door on a BEST keyway. The Adams Rite 4036 mortise cylinder is the manufacturer's own five-pin Grade 1 mortise cylinder and carries a 1/2 inch minimum door thickness rating for thin storefront stiles. Choose the 1EC if the building is already keyed to a BEST keyway such as WA, WB or WC; choose the 4036 if you want the lock and cylinder from one maker.
5) What is a comparable mortise cylinder to the BEST 1EC if I need a Grade 1 mortise cylinder with a standard cam?
The Corbin Russwin 1000 Grade 1 Series mortise cylinder in 1-1/2 inch length with an A02 straight cam is the closest straight mortise substitute. The BEST 1EC square head mortise cylinder runs 1-1/4 inch in the 6-pin configuration and 1-13/32 inch in the 7-pin, and its cam choice is made at order time between a standard cam and an Adams Rite MS cam. If the mortise lock case on your door was prepped for a 1-1/2 inch cylinder projection, the Corbin Russwin 1000 matches that length directly; if it takes the shorter body, the 1EC with the included 5/8 inch slip ring is the fit.
6) The exit device on my door takes a rim cylinder, not a mortise cylinder - what should I order instead of the BEST 1EC?
A rim device needs a rim cylinder with a tailpiece rather than a square head mortise body with a cam. The Schlage Commercial 20-021 is a 6-pin rim cylinder with a vertical tailpiece cam and ships with two keys, and the 20-022 is the same 6-pin rim cylinder with a horizontal tailpiece cam - pick the orientation the device's tailpiece slot takes. The Corbin Russwin 3070 is a 6-pin rim cylinder housing with a 1-7/8 inch tailpiece if you are working in the Corbin Russwin 3000 line. Note that the 1EC does offer a Rim Cylinder ring selection, so confirm the body style you need before ordering.
7) Our facility is standardized on interchangeable cores - is the BEST 1EC premium core cylinder the same thing as an FSIC housing?
They are not the same part. The BEST 1EC is a square head mortise cylinder supplied with a premium core in a 6-pin or 7-pin configuration, ordered against a BEST keyway. If your standard is a full size interchangeable core, the Schlage 20-057 is a 6-pin FSIC rim cylinder with a convertible tailpiece cam, and the 20-057-C is an FSIC core in the C keyway with a 643E aged bronze finish. For a large format interchangeable core in a mortise housing, the Corbin Russwin 1080 is a 1-1/2 inch 6-pin LFIC mortise cylinder built for Schlage L9000 mortise locks with an A01 cloverleaf cam.
8) My door has a key-in-lever lockset, not a mortise lock - can I use the BEST 1EC cylinder?
No. The BEST 1EC is a square head mortise cylinder that threads into a mortise lock case; a key-in-lever or key-in-knob lockset takes a different cylinder body entirely. For those, the Kaba Ilco 1539 is a key-in-knob and lever universal cylinder, the 1579 is a knob and lever cylinder made for Sargent locksets, and the 1599 is a key-in-knob replacement cylinder. The Falcon A23161-05 G is a key-in-lever cylinder for the RU/T series in a 6-pin G keyway, keyed different with two cut keys. For a key-in-deadbolt, the Kaba Ilco 1549 is the corresponding part.
9) What ring types can I get with the BEST 1EC cylinder?
Rings are offered for 3E mortise, 6-pin mortise, 7-pin mortise, rim cylinder and tapered cylinder applications. The ring sets the collar height so the cylinder face finishes flush against the escutcheon or trim. A 5/8 inch slip ring is packed with the cylinder, with other lengths available when the trim sits deeper or shallower.
10) What finishes does the BEST 1EC mortise cylinder come in to match my other 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 matching by number rather than by name is the reliable way to keep a run of doors consistent.
11) What are the alternatives if I need a mortise cylinder but my building isn't keyed to BEST?
Several. The Corbin Russwin 1000 Grade 1 mortise cylinder comes in a 1-1/2 inch length with an A02 straight cam, and the 1070 Grade 1 housing is a 1-1/4 inch six-pin with an A01 cloverleaf cam. For Schlage L9000 mortise locks, the Corbin Russwin 1080 is a 1-1/2 inch six-pin LFIC cylinder with an A01 Schlage L cam. If you want a Schlage C keyway, the Detex MC65 is a 1-1/8 inch six-pin mortise cylinder.
12) What is the difference between the BEST 1EC mortise cylinder and the Corbin Russwin 1070 mortise housing?
The Corbin Russwin 1070 is a Grade 1 series 1-1/4 inch 6-pin mortise housing with an A01 cloverleaf cam - a cam profile used by Corbin Russwin and Yale mortise cases. The BEST 1EC is a square head mortise cylinder of solid brass or bronze, offered in 6-pin at 1-1/4 inch and 7-pin at 1-13/32 inch, with the cam selected as either a standard cam or an Adams Rite MS cam and a 5/8 inch slip ring in the box. In 6-pin form the two share the 1-1/4 inch body length, so the deciding factor is which cam your lock case accepts and which keyway the building is on.
13) Is there a simpler mortise cylinder than the BEST 1EC if I just need a 6-pin cylinder on a Schlage C keyway?
The Detex MC65 is a 1-1/8 inch 6-pin commercial grade mortise cylinder supplied on the Schlage C keyway, which removes the keyway decision if your building is already on C. The BEST 1EC requires you to specify a BEST keyway - WA, WB, WC, WD, WE, WG, WH, WK or WY - plus a keymark and marking number at order, which is what lets it drop into an existing BEST masterkey system. Order the MC65 for a one-off C-keyway opening; order the 1EC when the cylinder has to join a BEST keying schedule.
14) I need a high-security retrofit cylinder for a residential handleset or deadbolt - is the BEST 1EC appropriate?
The 1EC is a mortise cylinder, so it fits a mortise lock case rather than a tubular deadbolt or handleset. For those openings the Medeco line is the retrofit path: the 1012040 is a 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts, the 1075127 is a 5-pin rim type lazy motion single cylinder for handlesets and deadbolts, the 1065140 is a 5-pin retrofit cylinder for the Arrow JL interconnected lock and Emtek handleset and deadbolt outside cylinder, and the 1065244 is a 5-pin rim lazy motion cylinder with an Emtek tailpiece. Emtek's own CY4 cylinder is also sold individually.
15) Can the BEST 1EC cylinder be used as a cylinder pull on an aluminum storefront door?
No - a cylinder pull is a separate assembly that combines the cylinder with a pull body, and the 1EC is the cylinder alone. Adams Rite covers that application: the 4024 is a cylinder pull with trim plate mounting for MS1847 deadlock systems, the 4025 is a five pin tumbler cylinder pull with through-screws for the same MS1847 deadlock, and the 4026 is a five pin tumbler cylinder pull for wood door applications with the 5017 wood door deadlock. Use the 1EC with an Adams Rite MS cam when the door already has its own pull and only the cylinder is being replaced.
16) What is the BEST 1EC cylinder made of?
Solid brass or bronze housing, which is what gives it corrosion resistance on exterior and high-traffic openings. The core is a premium core, and the square head design is what holds cam engagement square in the lock case.
17) Is the BEST 1EC cylinder suitable for apartment and multi-family doors?
Yes. It is classed as a residential cylinder and is aimed at multi-family housing, property management cylinder replacement and locksmith service work. Brass or bronze construction and the choice of 6- or 7-pin keying let a property manager standardize a whole building on one keyway and one finish.
18) If I want the widest finish selection on a mortise cylinder, how does the BEST 1EC compare?
The BEST 1EC square head mortise cylinder is offered in 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. Among the interchangeable core comparables, the Schlage 20-057-C is specified in 643E aged bronze. If you are matching lever and exit trim across a building, the 1EC's range lets the cylinder face follow the existing finish schedule rather than forcing a compromise.
How fast can I get the BEST BES-1EC6C4-C4RP3626-PC 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 BES-1EC6C4-C4RP3626-PC come with a warranty?
Absolutely. The BEST BES-1EC6C4-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-1EC6C4-C4RP3626-PC?
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 BES-1EC6C4-C4RP3626-PC from ZenSupply?
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