BEST 3CF 150 Series Preferred ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$118.98
BEST BEST 3CF 150 Series Preferred 7-Pin Brass Preferred Cores for 8E Cylinder BES-3CF

BEST 3CF 150 Series Preferred 7-Pin Brass Interchangeable Core for 8E Cylinder

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Model: BES-3CF71P1626
From the Preferred Patented Cores Collection
$118.98
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$118.98
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BEST 3CF 150 Series Preferred 7-Pin Brass Interchangeable Core for 8E Cylinder

Professional Interchangeable Core Solution for 8E Cylinders

The BEST 3CF 150 Series Preferred interchangeable core delivers professional-grade security with 7-pin brass construction specifically designed for 8E cylinder applications. This patented system through 2024 provides backwards compatibility with all BEST Peaks systems and other major brands of locking hardware, enabling universal keying system replacements or upgrades. Manufactured to stringent quality standards with proven BEST interchangeable core technology for reliable commercial applications.

Professional Features & Benefits

  • 7-Pin Brass Construction: Durable brass components provide long-lasting performance and reliable operation in commercial environments.
  • 8E Cylinder Compatibility: Specifically engineered for seamless integration with 8E cylinder systems for precise fit and function.
  • Patented Preferred System: Protected technology through 2024 ensures exclusive security features and system integrity.
  • Universal Compatibility: Backwards compatible with all BEST Peaks systems and other major brands for flexible system integration and upgrades.
  • Masterkey Capability: Designed for masterkeyed systems providing convenient access control and customized security levels.
  • Easy Service and Combination: Interchangeable core design allows for quick rekeying and maintenance without removing the cylinder from the door.
  • Industry Standard Equipment: Utilizes standard key cutting equipment for convenient key duplication and system management.
  • Quality Manufacturing: Manufactured to stringent BEST quality standards ensuring consistent performance and reliability.

Technical Specifications

  • Collection: Preferred Patented Cores
  • Commercial/Residential: Commercial
  • 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: 3CF Series
  • Subcategory: Parts and Accessories

Installation & Operation

This interchangeable core is designed for use with compatible 8E cylinder systems. Refer to the parent cylinder installation instructions and manufacturer documentation for proper integration. Ensure compatibility with existing hardware before installation.

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Government and Municipal Buildings
  • Multi-Tenant Residential Properties
  • Industrial and Warehouse Facilities
  • Retail Establishments

Why Choose BEST Quality?

BEST interchangeable cores deliver professional-grade reliability with proven technology and stringent manufacturing standards. The patented Preferred system provides exclusive security features while maintaining compatibility with existing BEST systems and other major brands. Engineered for demanding commercial applications where dependable access control and system flexibility are essential.

Manufacturer Resources

Preferred Patented Key System

Product Specs

Product Group:
Parts and Accessories
Series:
3CF Series
Product Subgroup:
Cylinders
Product Type:
Cylinders
Subcategory:
Parts and Accessories
Commercial/Residential:
Commercial
Collection:
Preferred Patented Cores
Parts and Accessories Type:
Replacement Parts
Product Attribute:
Parts and Accessories
Product Category:
Mechanical Locks
Department:
Door Hardware

BEST BES-3CF71P1626 – Frequently Asked Questions

1) What is the difference between ordering the BEST 3CF core combinated versus uncombinated?
The 3CF Preferred core is offered two ways. Combinated means it ships pinned to a keying assignment, and there are two text fields to fill in when you order it that way: the Keymark and the Marking Number. Uncombinated ships unpinned, which is what a locksmith or an in-house shop with its own pinning kit wants so the core can be combinated into an existing masterkey system on site.
2) Which keyways can I get the BEST 3CF Preferred core in?
Six Preferred keyways are offered on the 3CF core: 1P, 2P, 7P, 8P, 9P and 10P. Order the keyway that matches the rest of your BEST Preferred system, since a core in the wrong keyway will not accept your existing keys.
3) Will a BEST 3CF core work in my 8E cylinder housing?
Yes, the 3CF 150 Series Preferred core is built specifically for 8E cylinder applications and drops into that housing. It is a 7-pin brass core, so the housing has to be a 7-pin BEST interchangeable core prep, not a 6-pin or a full-size interchangeable core prep from another brand.
4) Can I mix BEST 3CF Preferred cores into an existing BEST Peaks keying system?
The Preferred system is backwards compatible with all BEST Peaks systems and with other major brands of locking hardware, so it can be used for a whole-system keyway replacement or a staged upgrade rather than a rip and replace. It is a patented, masterkey-capable system, which is what lets you build grand master, master and change key levels across a building.
5) I need a replacement cylinder but my locks are Schlage, not BEST. Is this the right core?
No. The 3CF is a BEST 7-pin interchangeable core in a Preferred keyway sized for an 8E housing. For Schlage full-size interchangeable core work, look at the Schlage 20-057 FSIC rim cylinder or the 20-057-C FSIC core in the C keyway. If you need a plain Schlage rim cylinder instead, the 20-021 has a vertical tailpiece cam and the 20-022 a horizontal one.
6) What do I use for a mortise lock body rather than the BEST 3CF core?
A mortise lock needs a threaded mortise cylinder. The Corbin Russwin 1000 Grade 1 mortise cylinder is 1-1/2 inches long with an A02 straight cam, and the 1070 Grade 1 housing is a 1-1/4 inch 6-pin mortise housing with an A01 cloverleaf cam. If the lock is a Schlage L9000 mortise, the Corbin Russwin 1080 is a 1-1/2 inch 6-pin large format interchangeable core mortise cylinder with the A01 Schlage L cam. The BEST 3CF is the removable 7-pin core itself, intended for an 8E cylinder housing.
7) What is the closest equivalent to the BEST 3CF core if the doors are keyed to a Schlage system instead of BEST?
For a Schlage-keyed opening, the interchangeable core equivalent is the Schlage Commercial 20-057-C full size interchangeable core in the C keyway, supplied in 643E Aged Bronze. The BEST 3CF is a 7-pin brass interchangeable core built for the Preferred patented key system and 8E cylinder housings, with keyways 1P, 2P, 7P, 8P, 9P and 10P. Both are removable cores rather than complete cylinders, so the choice follows which key system the building is already standardized on.
8) I need a rim cylinder for an exit device, not a core. What should I order instead of the BEST 3CF?
The 3CF is a 7-pin brass interchangeable core that drops into an 8E cylinder housing, so it will not mount to an exit device on its own. For a rim application, the Schlage Commercial 20-021 rim cylinder uses a vertical tailpiece cam and the 20-022 uses a horizontal tailpiece cam, both 6-pin and supplied with two keys. If you want to keep interchangeable core flexibility on a rim device, the Schlage 20-057 is a 6-pin FSIC rim cylinder with a convertible tailpiece cam. The Corbin Russwin 3070 is a 6-pin rim cylinder housing with a 1-7/8 inch tailpiece.
9) Do I have to pull the cylinder out of the door to rekey a BEST 3CF core?
No. That is the point of the interchangeable core design: a control key removes the core from the 8E housing so it can be swapped or recombinated with the cylinder and lock still in the door. For a property manager handling tenant turnover, that means a core change instead of a lock change.
10) Is the 3CF Preferred core suitable for a high-traffic commercial building?
It is a commercial-duty part, built with brass components for sustained use, and BEST lists it for office buildings, schools, healthcare, government and municipal facilities, multi-tenant residential, industrial and warehouse space, and retail. The patented Preferred keyway also gives an institution key control, meaning blanks are restricted rather than cut at any hardware counter.
11) Is the BEST 3CF core a complete lock, or just the core?
Just the core. It is a replacement part, the keyed cylinder core that seats in an 8E cylinder housing. You still need the housing and the lock or exit device trim it mounts to. Existing 8E housings in the doors are the normal case, and only the core gets ordered.
12) Which cylinders look like substitutes for the BEST 3CF core but will not work in its place?
Several cylinders share the word cylinder without sharing the format. The Adams Rite 4024 and 4025 are cylinder pulls for MS1847 deadlock systems, and the 4026 is a cylinder pull for the 5017 wood door deadlock, all trim assemblies rather than cores. The Adams Rite 4036 is a Grade 1 five-pin mortise cylinder with a 1/2 inch minimum door thickness. The Kaba Ilco 1539 key-in-knob and lever universal cylinder, 1549 key-in-deadbolt, 1579 for Sargent knobs and levers, and 1599 key-in-knob replacement cylinder are fixed cylinder replacements. None of these accept a 7-pin BEST interchangeable core the way an 8E housing does.
13) Is a 6-pin mortise cylinder like the Detex MC65 a simpler alternative to the BEST 3CF core?
The Detex MC65 is a 1-1/8 inch 6-pin commercial mortise cylinder in the Schlage C keyway, a one-piece cylinder that is rekeyed by disassembly. The BEST 3CF is a 7-pin brass core on the Preferred patented key system that is pulled and swapped without removing the 8E cylinder from the door, and it is built for masterkeyed systems. Choose by whether you want field-serviceable cores across a facility or a single standalone cylinder in a standard keyway.
14) For a residential-style handleset or deadbolt retrofit, what should I look at instead of the BEST 3CF?
The 3CF core is specified for commercial use with 8E cylinders. For handleset and deadbolt retrofits, Medeco offers the 1012040 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts, the 1065140 5-pin retrofit cylinder for Arrow JL interconnected locks and Emtek handleset and deadbolt outside cylinders, the 1065244 5-pin lazy motion rim cylinder with an Emtek tailpiece, and the 1075127 5-pin lazy motion single cylinder for handlesets and deadbolts. Emtek also lists the CY4 cylinder sold each.
15) I need a replacement cylinder for a key-in-lever lockset. Does the BEST 3CF fit, or is there a better match?
The 3CF is a 7-pin interchangeable core for 8E cylinder housings, not a key-in-lever cylinder. For a Falcon key-in-lever lockset, the Falcon A23161-05 G is a key-in-lever cylinder for the RU/T series with a 6-pin G keyway, keyed different and supplied with two cut keys. The Kaba Ilco 1539 is a universal key-in-knob and lever cylinder if you are matching a mixed fleet of levers.
16) What finishes does the BEST 3CF 7-pin core come in?
Four finishes: 606 satin brass, 612 satin bronze, 613 satin bronze oil-rubbed, and 626 satin chrome. Match the core face to the lock trim on the opening, 626 satin chrome being the usual pick alongside satin chrome commercial levers and exit devices.
17) Can I use standard key machines to cut keys for the BEST Preferred system?
Yes, the Preferred system uses industry standard key cutting equipment, so a shop already set up for BEST figure-eight cores does not need new machinery. Key blanks themselves are patent-restricted under the Preferred program, so those come through the authorized channel.
18) If I want the core finish to match existing hardware, how does the BEST 3CF compare with the Schlage FSIC core?
The BEST 3CF core is offered in 606 Satin Brass, 612 Satin Bronze, 613 Satin Bronze Oil-Rubbed and 626 Satin Chrome. The Schlage Commercial 20-057-C full size interchangeable core is listed in 643E Aged Bronze with the C keyway. If the surrounding trim is satin chrome or satin brass, the 3CF finish range lines up with those openings.
19) Is there documentation on the BEST Preferred keying system I can send to my keying coordinator?
Yes, BEST publishes a Preferred Patented Key System document (BA-3420) covering the keying program the 3CF core belongs to, and it is available with the product data for building out masterkey schedules and key control records.
How fast can I get the BEST BES-3CF71P1626 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-3CF71P1626 come with a warranty?
Absolutely. The BEST BES-3CF71P1626 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-3CF71P1626?
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-3CF71P1626 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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