BEST 1CD Series Drill Resistan...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$98.00
$89.23
BEST 1CD Series Drill Resistant 6-Pin Cylinder Core

BEST 1CD Series Drill Resistant 6-Pin Cylinder Core

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Model: BES-1CD6A1605
From the Standard Cores Collection
$98.00
$89.23
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$98.00
$89.23
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BEST 1CD Series Drill Resistant 6-Pin Cylinder Core

Professional Drill Resistant Cylinder Core Solution

The BEST 1CD Series Drill Resistant 6-Pin Cylinder Core delivers enhanced security with drill-resistant construction for commercial applications. This standard core features the same strict tolerances and high manufacturing standards as BEST patented systems, ensuring quality, durability and performance you can trust. Engineered for precise masterkey applications, this 6-pin cylinder core provides the security and reliability that has made BEST an industry leader for nearly 100 years.

Professional Features & Benefits

  • Drill Resistant Construction: Enhanced security design provides protection against drilling attacks for improved facility security.
  • 6-Pin Configuration: Standard 6-pin design offers reliable keying options for commercial masterkey systems.
  • Strict Manufacturing Tolerances: Engineered to the same high standards as BEST patented systems for consistent quality and performance.
  • Masterkey System Compatibility: Designed for precise, carefully managed masterkey applications with wide range of keying options.
  • Standard Core Design: 1CD series provides enhanced security while maintaining compatibility with standard BEST hardware.
  • Commercial Grade Durability: Built for demanding commercial applications with BEST’s proven track record of reliability.
  • Industry Leading Support: Backed by active support for new and existing BEST Standard systems.

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 is designed for use with compatible BEST mechanical 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
  • 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 drill resistant cylinder core is manufactured to the same strict tolerances and high standards of excellence as BEST patented options, ensuring quality and performance you can trust. With active support for new and existing BEST Standard systems, you can rely on continued service and compatibility for your security infrastructure.

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-1CD6A1605 – Frequently Asked Questions

1) What is the difference between ordering a BEST 1CD core combinated versus uncombinated?
Combinated means the core ships already pinned to a key combination, so you give us the keymark and marking number from your existing BEST system and it arrives keyed to match. Uncombinated ships unpinned for a locksmith or in-house shop to pin on their own capping press to whatever the masterkey schedule calls for. If you maintain your own BEST key system, uncombinated is the normal buy; if you do not pin your own cores, order combinated.
2) Will a BEST 1CD drill resistant core drop into the locks I already have on my building?
The 1CD is a standard BEST small format interchangeable core in the 6-pin configuration, built to the same tolerances as BEST patented systems, so it goes into BEST housings and hardware already prepped for a standard core. The key point is the keyway: the core has to be ordered in the same keyway family as the rest of your system, or your existing keys will not enter it. Check the letter stamped on your current cores or keys and match it.
3) Is this a complete lock or just the core?
Just the core. The 1CD is a replacement cylinder core only, meant to go into an existing BEST-prepped lockset, deadbolt, exit device cylinder or padlock housing. If you're building a new opening from scratch you also need the lock chassis or housing, and a control key to insert and remove the core.
4) What do I order if the opening takes a mortise cylinder rather than an interchangeable core?
The BEST 1CD is an interchangeable core and needs a compatible core housing. Where the lock body takes a threaded mortise cylinder instead, the Corbin Russwin CR1000-112 is a Grade 1 mortise cylinder 1-1/2 inches long with an A02 straight cam, and the CR1070-114-A01 is a 1-1/4 inch 6-pin mortise housing with an A01 cloverleaf cam. The Detex MC65 is a 1-1/8 inch 6-pin mortise cylinder in the Schlage C keyway. Cylinder length must match the door and lock prep, and the cam has to match the lock body.
5) What is the closest interchangeable core equivalent to the BEST 1CD drill resistant core from another manufacturer?
The BEST 1CD is a 6-pin interchangeable cylinder core supplied in Combinated or Uncombinated form across BEST keyways A through TE. The nearest cross-brand counterpart is the Schlage 20-057-C, a full size interchangeable core cylinder in the Schlage C keyway and 643E Aged Bronze finish. Both are cores that drop into housings rather than complete cylinders, but they are keyed to different manufacturer systems, so a Schlage FSIC core will not operate a BEST keyway and vice versa. Match the core to the key system already in the building.
6) I need a rim cylinder for an exit device, not a core. What should I use instead of the BEST 1CD?
The BEST 1CD is a cylinder core, not a complete rim cylinder housing, so it cannot mount directly to an exit device on its own. For a rim application, the Schlage 20-021 is a 6-pin rim cylinder with a vertical tailpiece cam and 2 keys, and the Schlage 20-022 is the same rim cylinder with a horizontal tailpiece cam. The Corbin Russwin 3070-178 is a 6-pin rim cylinder housing with a 1-7/8 inch tailpiece. Choose the tailpiece orientation and length your exit device chassis calls for.
7) Which keyways can I get the BEST 1CD 6-pin core in?
Twenty keyways are offered: A, B, C, D, DD, E, F, G, H, J, K, L, M, N, O, R, TB, TC, TD and TE. On a masterkeyed facility the keyway is not a free choice, it has to match the family your existing BEST system was built on, otherwise the change key and master will not enter the core.
8) Does a drill resistant core actually change anything for a building that keeps getting broken into?
The 1CD adds drill-resistant construction to the standard BEST core, aimed at attacks where someone tries to drill the shear line rather than pick or bump the lock. It's a direct swap into the same housings a standard BEST core sits in, so you can upgrade the exposed openings (exterior doors, storage, mechanical rooms) without touching the rest of the hardware or rebuilding the key system, as long as you stay in the same keyway.
9) Can I mix BEST 1CD drill resistant cores with regular BEST standard cores in the same masterkey system?
Yes. The 1CD is built on the BEST Standard key system with the same tolerances as the patented options, so it pins to the same bitting schedule as the rest of your standard cores in the matching keyway. That lets you put drill resistant cores only on the perimeter and high-value doors while leaving standard cores on interior openings, all operated by the same masters.
10) I have a Schlage L9000 mortise lock. Can I put a BEST 1CD core in it?
The BEST 1CD is a BEST-format interchangeable core and requires a matching core housing. For a Schlage L9000 mortise lock, the Corbin Russwin CR1080-112-A01 is a Grade 1 1-1/2 inch LFIC mortise cylinder, 6-pin, specified for Schlage L9000 mortise locks with an A01 cloverleaf cam. That cylinder gives you the mortise housing and cam the L9000 body needs.
11) Can I use the BEST 1CD core to rekey a key-in-knob or key-in-lever lockset?
The BEST 1CD core fits BEST-style interchangeable core housings, so a key-in-lever lock has to be an IC-prepped chassis to accept it. For conventional key-in-knob and lever locks, Kaba Ilco offers dedicated replacement cylinders: the 1539 key-in-knob and lever universal cylinder, the 1579 knob and lever cylinder for Sargent, and the 1599 key-in-knob replacement cylinder. The Falcon A23161-05 G is a key-in-lever cylinder in the RU/T series 6-pin G keyway, keyed different with 2 cut keys.
12) What is the difference between the BEST 1CD core and a Schlage 20-057?
Both are 6-pin interchangeable core products. The BEST 1CD is supplied as a core alone in BEST keyways A through TE and eight finishes including 605 Bright Brass, 626 Satin Chrome and 690 Statuary Dark Bronze. The Schlage 20-057 is a 6-pin FSIC rim cylinder with a convertible tailpiece cam and 2 keys, meaning it includes the rim housing the core sits in. If you already have BEST IC housings in the doors, the 1CD core alone is what you replace; if the opening has no housing yet, a complete rim cylinder assembly is the comparable item.
13) Is there an alternative to the BEST 1CD core for an aluminum storefront narrow stile door?
The BEST 1CD is a commercial interchangeable core keyed into BEST masterkey systems and requires an IC housing at the opening. Narrow stile aluminum doors typically use Adams Rite hardware instead: the 4036 is a Grade 1 five-pin mortise cylinder rated for a 1/2 inch minimum door thickness, and the 4024 and 4025 are cylinder pulls designed for use with the Adams Rite MS1847 deadlock and deadlatch, the 4025 using through-screws and the 4024 a trim plate mounting. For a wood door deadlock, the Adams Rite 4026 five-pin cylinder pull suits the 5017 wood door deadlock.
14) Will a BEST 1CD core work in a residential handleset or Kwikset deadbolt?
No. The BEST 1CD is a commercial interchangeable core built for managed masterkey systems and needs a BEST IC-prepped housing. Residential handlesets and deadbolts take purpose-built retrofit cylinders instead, such as the Medeco 1012040, a 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts, the Medeco 1075127, a 5-pin rim type lazy motion single cylinder for handlesets and deadbolts, and the Medeco 1065140, a 5-pin retrofit cylinder for Arrow JL interconnected locks and Emtek handleset and deadbolt outside cylinders.
15) What finishes does the BEST 1CD core come in so it matches my other 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. For fleet work, 626 satin chrome and 613 oil-rubbed bronze are the two that most commonly match existing commercial trim, but the core face is what shows, so match it to the lever or cylinder collar it sits in.
16) Is the BEST 1CD core rated for commercial traffic or is it a residential part?
Commercial. It's built for schools, hospitals, government buildings, warehouses, retail and multi-tenant residential where cores get rekeyed and pulled repeatedly over the life of the system. The interchangeable core format is the reason institutions use it: a tenant turnover or a lost key is a core swap with a control key, not a lock replacement.
17) Do I need a 6-pin core, or would a 5-pin cylinder do the same job?
The BEST 1CD is a 6-pin core, and the sixth pin chamber is what gives a managed masterkey system the additional keying levels it needs across a large facility. Five-pin alternatives exist for simpler openings, including the Adams Rite 4036 Grade 1 five-pin mortise cylinder and the Medeco 1065244, a 5-pin rim lazy motion cylinder with an Emtek tailpiece. Those suit standalone doors; a 6-pin core is the choice where the opening has to sit inside a master key hierarchy.
18) What is the cylinder replacement for a deadbolt if the BEST 1CD core is not the right format?
The BEST 1CD is a core for interchangeable core housings. Where the opening is a conventional deadbolt, the Kaba Ilco 1549 is a key-in-deadbolt cylinder built for that function, and the Ilco 1539 universal cylinder also covers deadbolt function. For an Emtek assembly, the Emtek CY4 cylinder is sold each.
How fast can I get the BEST BES-1CD6A1605 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-1CD6A1605 come with a warranty?
Absolutely. The BEST BES-1CD6A1605 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-1CD6A1605?
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-1CD6A1605 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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