BEST 3C Series 6-Pin Cylinder ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$69.00
$62.83
BEST 3C Series 6-Pin Cylinder Core for 8E Applications

BEST 3C Series 6-Pin Cylinder Core for 8E Applications

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Model: BES-3C6A1605
From the Standard Cores Collection
$69.00
$62.83
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$69.00
$62.83
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BEST 3C Series 6-Pin Cylinder Core for 8E Applications

Professional Cylinder Core Component for 8E Systems

The BEST 3C Series 6-Pin Core is specifically designed for use with 8E cylinder applications, providing reliable keying solutions for commercial security systems. This standard core features 6-pin configuration and is engineered to BEST’s strict manufacturing tolerances for consistent performance and durability. Part of the comprehensive BEST Standard key system family, this core supports masterkey applications and integrates seamlessly with existing BEST hardware installations.

Professional Features & Benefits

  • 6-Pin Configuration: Standard 6-pin design provides reliable security and keying flexibility for commercial applications.
  • 8E Cylinder Compatibility: Specifically engineered for use with BEST 8E cylinder systems for proper fit and function.
  • Strict Manufacturing Tolerances: Engineered to the same high standards as BEST patented systems ensuring quality, durability and performance.
  • Masterkey System Support: Compatible with BEST Standard masterkey applications for comprehensive access control management.
  • Durable Construction: Built to withstand demanding commercial use with BEST’s proven reliability standards.
  • System Integration: Designed to work seamlessly with existing BEST Standard key systems and hardware.
  • Professional Grade Quality: Manufactured to industry-leading standards for consistent operation and long service life.

Technical Specifications

  • Collection: Standard 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: Standard & Premium Cores
  • Subcategory: Parts and Accessories

Installation & Operation

This cylinder core component is designed for use with compatible BEST 8E cylinder 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
  • Government and Municipal Buildings
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Retail Establishments

Why Choose BEST Quality?

BEST Standard key systems have provided security, durability and performance for nearly 100 years across a wide range of applications. This 3C Series core is manufactured to the same strict tolerances and high standards of excellence as BEST patented systems, ensuring quality and performance you can trust. BEST actively supports new and existing Standard systems, providing continued reliability for demanding commercial applications where dependable access control is essential.

Manufacturer Resources

Premium Cores and Keys

Product Specs

Product Group:
Parts and Accessories
Series:
Standard & Premium Cores
Product Subgroup:
Cylinders
Product Type:
Cylinders
Subcategory:
Parts and Accessories
Commercial/Residential:
Commercial
Collection:
Standard Cores
Parts and Accessories Type:
Replacement Parts
Product Attribute:
Parts and Accessories
Product Category:
Mechanical Locks
Department:
Door Hardware

BEST BES-3C6A1605 – Frequently Asked Questions

1) What is a BEST 3C 6-pin core for, and does it fit an 8E cylinder housing?
The BEST 3C Series 6-pin core is the removable keying element that drops into BEST 8E cylinder applications. It is a replacement part, not a complete lock or housing, so you need the 8E cylinder already in the door. The core carries the pinning and the keyway; swap it and you rekey the opening without pulling the lock apart.
2) Should I order the BEST 3C core combinated or uncombinated?
Both are offered. Combinated means BEST pins and cuts it to your system before it ships, so you supply the keymark and marking number from your existing BEST records at the time of order. Uncombinated ships unpinned for a locksmith or in-house shop to pin to your own masterkey system. If you do not run your own key machine and pinning kit, order combinated.
3) Which BEST keyways can I get this 6-pin core in?
Twenty BEST Standard keyways are available: A, B, C, D, DD, E, F, G, H, J, K, L, M, N, O, R, TB, TC, TD and TE. Match the keyway to the one already stamped on your existing BEST cores or your key records, otherwise the new core will not accept your building keys.
4) Will this core work in an existing BEST masterkey system?
It is built for BEST Standard key systems and supports masterkey applications, so it can be pinned into an existing BEST Standard master system as long as the keyway matches. BEST still supports new and existing Standard systems, which is why these cores remain available for buildings keyed decades ago.
5) Is a 6-pin BEST core different from a 7-pin one, and does it matter for my system?
It matters. This is the 6-pin version of the 3C core, and a BEST system is built as either 6-pin or 7-pin throughout. Ordering 6-pin into a 7-pin system leaves you with a core your masterkeys will not operate. Check the pin count on a core you already have before you order a batch.
6) Do I need a separate housing to use a BEST 3C 6-pin core on a rim exit device?
The BEST 3C Series 6-pin core is a replacement core component intended for use with compatible BEST 8E cylinder systems, not a complete cylinder with its own tailpiece. Where the exit device needs a full rim cylinder assembly instead, Schlage offers the 20-057 6-pin FSIC rim cylinder with a convertible tailpiece cam and two keys, and the conventional Schlage 20-021 with a vertical tailpiece cam or 20-022 with a horizontal tailpiece cam. Corbin Russwin's 3070 is a 6-pin rim cylinder housing with a 1-7/8 inch tailpiece.
7) What should I order instead of a BEST 3C core for a mortise lock body?
The BEST 3C Series 6-pin core is keyed for BEST 8E cylinder applications. A mortise lock body that takes a conventional threaded mortise cylinder needs a mortise part instead: Corbin Russwin's 1000 Grade 1 series mortise cylinder at 1-1/2 inch length with an A02 straight cam, the 1070 Grade 1 series 1-1/4 inch 6-pin mortise housing with an A01 cloverleaf cam, or the 1080 Grade 1 series 1-1/2 inch large format interchangeable core mortise cylinder, 6-pin, for Schlage L9000 mortise locks. Detex also lists the MC65 mortise cylinder, 1-1/8 inch, 6-pin, in the Schlage C keyway.
8) What is the closest equivalent to a BEST 3C 6-pin core if the opening uses a Schlage full size interchangeable core system?
The BEST 3C Series 6-pin core is a core for BEST 8E cylinder applications and keys into BEST Standard masterkey systems. For a Schlage full size interchangeable core housing, the equivalent part is the Schlage Commercial 20-057-C full size interchangeable core cylinder in the C keyway, 643E Aged Bronze finish. The two are not cross-compatible: the BEST core is ordered in a BEST keyway such as A, B, C or TB, while the 20-057-C comes in the Schlage C keyway, so the choice follows whichever key system the building is already on.
9) Can I use a BEST 3C core on an Adams Rite MS1847 deadlock or a narrow stile aluminum door?
The BEST 3C Series 6-pin core is designed for BEST 8E cylinder applications and is not a cylinder pull or narrow stile cylinder. For Adams Rite MS1847 deadlock and deadlatch systems, the matching parts are the 4024 cylinder pull with trim plate mounting and the 4025 five pin tumbler cylinder pull with through-screws; the 4026 five pin tumbler cylinder pull suits the Adams Rite 5017 wood door deadlock and deadlatch. Adams Rite also lists the 4036 Grade 1 mortise cylinder with five-pin security for doors 1/2 inch minimum thickness.
10) What finishes does the BEST 3C core come in for matching existing hardware?
Eight finishes: 605 bright brass, 606 satin brass, 611 bright bronze, 612 satin bronze, 613 satin bronze oil-rubbed, 625 bright chrome, 626 satin chrome and 690 statuary dark bronze. Only the core face shows once installed, so property managers standardizing a building usually pick 626 or 626-adjacent to match the lock trim already on the doors.
11) Can I use a Schlage FSIC core instead of a BEST 3C core?
No. The two are different core platforms and different keyways, and a Schlage full size interchangeable core such as the 20-057 or the 20-057-C in C keyway will not key to or seat in BEST 8E hardware. If your building is on BEST Standard, stay with the 3C core; if you are converting a door over to Schlage, you change the cylinder housing too, not just the core.
12) What do I need to supply when ordering a combinated BEST 3C core?
Two pieces of information from your key records: the keymark and the marking number. Those identify the system and the specific change or master combination the core should be cut to. Without them a combinated core cannot be pinned to your building.
13) Is a Kaba Ilco 1539 or 1599 cylinder a substitute for a BEST 3C 6-pin core?
No. The BEST 3C Series 6-pin core is a core that seats in BEST 8E cylinder applications and works within BEST Standard masterkey systems. The Kaba Ilco 1539 series is a key-in-knob and lever universal cylinder, the 1599 is a key-in-knob replacement cylinder, the 1579 is a knob and lever cylinder for Sargent, and the 1549 is a key-in-deadbolt cylinder. Those are complete replacement cylinders for specific knob, lever and deadbolt chassis rather than interchangeable cores, so they do not drop into a BEST 8E housing.
14) For a Falcon key-in-lever chassis, what cylinder takes the place of a BEST 3C core?
The BEST 3C Series 6-pin core is built for BEST 8E cylinder applications and is ordered combinated or uncombinated in BEST keyways. A Falcon key-in-lever chassis instead takes the Falcon A23161-05 G key-in-lever cylinder, a 6-pin cylinder in the Falcon G keyway from the RU/T series, supplied keyed different with two cut keys. Because that part arrives keyed different, it sits outside an existing masterkey system, whereas the 3C core can be supplied combinated to a BEST Standard system with a keymark and marking number.
15) What is the difference between the BEST 3C 6-pin core and a Medeco retrofit cylinder?
The BEST 3C Series 6-pin core is a commercial core for BEST 8E cylinder applications, offered in finishes from 605 Bright Brass through 626 Satin Chrome and 690 Statuary Dark Bronze. The Medeco parts in the same family are chassis-specific retrofits rather than cores: the 1012040 is a 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts, the 1065140 is a 5-pin retrofit for the Arrow JL interconnected lock and Emtek handleset and deadbolt outside cylinder, the 1065244 is a 5-pin lazy motion rim type cylinder with an Emtek tailpiece, and the 1075127 is a 5-pin rim type lazy motion single cylinder for handlesets and deadbolts. Those target residential-style handleset and deadbolt hardware; the 3C core serves BEST commercial cylinder housings.
16) Is this core suitable for high-traffic commercial doors like schools and hospitals?
Yes. It is a commercial-rated part built to BEST's manufacturing tolerances, and the stated applications include office buildings, educational facilities, healthcare, government and municipal buildings, industrial and warehouse, multi-tenant residential and retail.
17) For a single residential-style door where a masterkey system is not needed, what is a simpler alternative to a BEST 3C core?
The BEST 3C Series 6-pin core is a commercial part that supports BEST Standard masterkey applications and is ordered in one of twenty BEST keyways, so it makes sense where a keying system is being maintained. For a one-off door with no system to match, the Emtek CY4 cylinder is sold each as a single replacement part, and the Kaba Ilco 1599 is a key-in-knob replacement cylinder. Those involve no keyway or combinating selection.
How fast can I get the BEST BES-3C6A1605 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-3C6A1605 come with a warranty?
Absolutely. The BEST BES-3C6A1605 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-3C6A1605?
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-3C6A1605 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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