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 7-Pin Cylinder Core

BEST 1CD Series Drill Resistant 7-Pin Cylinder Core

(No reviews yet) Write a Review

Model: BES-1CD7A1605
From the Standard Cores Collection
$98.00
$89.23
Selected Finish is

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

$98.00
$89.23
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

BEST 1CD Series Drill Resistant 7-Pin Cylinder Core

Professional Drill Resistant Core Solution

The BEST 1CD Series Drill Resistant 7-Pin Cylinder Core delivers enhanced security protection with drill resistant construction for commercial applications. Engineered to the same strict tolerances and high standards as BEST patented systems, this core provides reliable performance and durability you can trust. Part of the comprehensive BEST Standard key system family, the 1CD core offers precise masterkey compatibility for carefully managed access control applications.

Professional Features & Benefits

  • Drill Resistant Construction: Enhanced security design provides protection against drilling attacks for improved facility security.
  • 7-Pin Configuration: Advanced pin tumbler design offers expanded keying options and enhanced security over standard 5-pin systems.
  • Strict Manufacturing Tolerances: Engineered to the same high standards as BEST patented systems ensuring consistent quality and reliable operation.
  • Masterkey Compatibility: Designed for precise, carefully managed masterkey applications that make BEST an industry leader for masterkeying.
  • Standard Core Series: Part of the comprehensive BEST Standard key system family providing security, durability and performance across a wide range of applications.
  • Commercial Grade Durability: Built for demanding commercial applications with proven reliability and long-term performance.
  • Continued Support: BEST actively supports new and existing Standard systems for ongoing compatibility and service.

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 cylinder assemblies. Refer to the parent cylinder installation instructions and manufacturer documentation for proper integration. Ensure compatibility with existing hardware and keying requirements before installation.

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Government and Municipal Buildings
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • High-Security Commercial Applications

Why Choose BEST Quality?

BEST Standard key systems have provided security, durability and performance for nearly 100 years across a wide range of applications. With strict manufacturing tolerances and the same high standards of excellence used in patented systems, BEST cores deliver quality and performance you can trust. Engineered for demanding commercial applications where reliable security and precise masterkey management are 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-1CD7A1605 – Frequently Asked Questions

1) Will a BEST 1CD drill resistant core drop into my existing BEST small format interchangeable core hardware?
The 1CD is a BEST Standard key system core, so it works with compatible BEST cylinder assemblies that already take a BEST core. It is part of the Standard key system family, which BEST continues to support on both new and existing systems. Before ordering, match the keyway to the rest of your system, since the core is offered in 20 keyways from A through TE. If your hardware was built for a different manufacturer's core format, this is not the part.
2) What is the difference between ordering a BEST 1CD core combinated versus uncombinated?
Combinated means the core arrives pinned to a key combination you specify, and uncombinated means it ships unpinned for your locksmith to pin on site to your system. Both are offered on the 1CD. If you order combinated, you supply the keymark and the marking number so it is cut into your existing masterkey system; if you keep your own pinning kit and key machine, uncombinated is the one to take.
3) Is a 7-pin BEST core interchangeable with a 6-pin BEST core in the same system?
The 1CD is a 7-pin core. BEST Standard systems are built as either 6-pin or 7-pin, and the pin count has to match the system the core is keyed into, so a 7-pin core belongs in a 7-pin system. The 7-pin format gives more masterkeying levels and more key changes than a 5-pin arrangement, which is why larger facilities standardize on it.
4) I need to add drill resistance to just a few doors in a large keyed system. Can I mix 1CD cores with my standard BEST cores?
Yes. Because the 1CD is engineered to the same tolerances and standards as BEST patented systems and belongs to the Standard key system family, you can swap drill resistant cores into selected high-exposure openings while the rest of the building stays on the cores you already have. The masterkey hierarchy is unchanged as long as the keyway and combination are cut to your existing system.
5) Is the BEST 1CD a complete cylinder or do I need a housing too?
It is the core only, a replacement part that seats into a BEST cylinder assembly you already have or buy separately. If your opening has no BEST-format housing on it yet, you need the matching mortise, rim or key-in-lever housing as well. For hardware built around other formats, the comparable set runs to full cylinders instead, such as the Corbin Russwin 1070 1-1/4 inch 6-pin mortise housing or the Schlage 20-021 rim cylinder.
6) What should I use instead if my doors take a Schlage full size interchangeable core, not a BEST core?
A BEST 1CD core will not seat in Schlage FSIC hardware. For that, the Schlage 20-057 6-pin FSIC rim cylinder with convertible tailpiece cam is the right family, and the 20-057-C comes in the C keyway with a 643E aged bronze finish. Confirm the keyway matches the rest of your Schlage system before you order.
7) What is the closest interchangeable core equivalent to a BEST 1CD 7-pin core from another brand?
For a full size interchangeable core opening, the Schlage 20-057-C is the nearest counterpart. It is a full size interchangeable core cylinder in the Schlage C keyway with a 643E Aged Bronze finish. The BEST 1CD core is a 7-pin drill resistant core in the BEST Standard key system, offered in keyways A through R plus TB, TC, TD and TE, in finishes from 605 Bright Brass to 690 Statuary Dark Bronze, and ordered either combinated or uncombinated. The practical difference is the key system: a Schlage C core will not key into a BEST Standard masterkey system, so match whichever system the rest of the facility already runs.
8) I need a rim cylinder for an exit device, not a core. What should I order instead of the BEST 1CD?
The 1CD is a replacement core that drops into a compatible BEST cylinder housing, so it is not a standalone rim cylinder. For a rim application, the Schlage 20-021 is a 6-pin rim cylinder with a vertical tailpiece cam supplied with two keys, and the 20-022 is the same 6-pin rim cylinder with a horizontal tailpiece cam. The Corbin Russwin 3070 is a 6-pin rim cylinder housing with a 1-7/8 inch tailpiece. If you want to stay on an interchangeable core system at a rim opening, the Schlage 20-057 is a 6-pin FSIC rim cylinder with a convertible tailpiece cam that accepts a core.
9) What do I use for a mortise lock instead of a BEST 1CD core?
A mortise lock needs a threaded mortise cylinder housing, which the 1CD core alone does not provide. The Corbin Russwin 1000 series mortise cylinder comes in a 1-1/2 inch length with an A02 straight cam, and the 1070 is a 1-1/4 inch 6-pin mortise housing with an A01 cloverleaf cam. The Adams Rite 4036 is a Grade 1 five-pin mortise cylinder that suits doors from 1/2 inch minimum thickness. If you want to keep the opening on interchangeable cores, the Corbin Russwin 1080 is a 1-1/2 inch LFIC 6-pin mortise cylinder set up for Schlage L9000 mortise locks with an A01 cam.
10) What does drill resistant actually add on the BEST 1CD core?
Drill resistance is built into the core itself, guarding the pin stack against a drilling attack rather than relying on the housing or the door hardware around it. That matters on ground-floor entries, cash-handling rooms, IT closets and any opening on a public corridor. Mechanically it is the same BEST Standard core footprint, so you are hardening a specific opening without breaking your keying system.
11) Can I match BEST 1CD cores to the finishes already on my lever and mortise hardware?
Eight finishes are offered: 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 a building standardized on satin chrome levers, 626 is the match; 626 and 613 are the two that most commonly show up on existing commercial openings.
12) Which keyway should I order on a BEST 1CD core if I am expanding an existing system?
Order the keyway already in use on the building, not a new one, or the new core will not accept your masterkeys. The 1CD covers A, B, C, D, DD, E, F, G, H, J, K, L, M, N, O, R, TB, TC, TD and TE. Your keyway is stamped on the existing keys or recorded in the system's keying schedule, and it has to be carried over along with the keymark when the core is ordered combinated.
13) What is the option for a narrow stile aluminum storefront door, where a BEST 1CD core does not fit?
Narrow stile aluminum doors normally take a cylinder pull rather than a core in a lock housing. The Adams Rite 4024 is a cylinder pull with trim plate mounting for MS1847 deadlock and deadlatch systems, and the 4025 is a five pin tumbler cylinder pull with through-screws for the same MS1847 lock. For a wood door on the same family of locks, the 4026 is a five pin tumbler cylinder pull made for the Adams Rite 5017 wood door deadlock and deadlatch. The BEST 1CD core is a 7-pin core for compatible BEST cylinder assemblies in commercial mechanical lock applications.
14) Will a Kaba Ilco 1539 or 1599 cylinder work as a substitute for a BEST 1CD core?
No. The Kaba Ilco 1539 is a key-in-knob and lever universal cylinder and the 1599 is a key-in-knob replacement cylinder, both complete cylinders that replace the plug assembly in a knob or lever lock. The BEST 1CD is a 7-pin interchangeable core that seats in a BEST core housing and is pulled with a control key. They are not dimensionally or functionally interchangeable. The Ilco 1579 is a knob and lever cylinder built for Sargent locks, and the 1549 is a key-in-deadbolt cylinder, so check the lock brand and body before ordering any of them.
15) Is a 6-pin cylinder like the Detex MC65 or Falcon A23161 a simpler alternative to the BEST 1CD 7-pin core?
They are different products for different openings. The Detex MC65 is a 6-pin mortise cylinder in the Schlage C keyway with a 1-1/8 inch length, and the Falcon A23161-05 G is a 6-pin key-in-lever cylinder in the G keyway supplied keyed different with two cut keys. Both are fixed cylinders that must be disassembled to rekey. The BEST 1CD is a 7-pin core that is removed with a control key, which is what lets a facility rekey an opening without pulling the lock apart, and it ships combinated or uncombinated so a locksmith can pin it to an existing masterkey system.
16) For a residential-style handleset or deadbolt, what goes in place of a BEST 1CD core?
Those openings take a purpose-built retrofit cylinder rather than an interchangeable core. The Medeco 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, and the 1065244 is a 5-pin rim lazy motion cylinder supplied with an Emtek tailpiece. The Medeco 1065140 is a 5-pin retrofit cylinder for the Arrow JL interconnected lock and Emtek handleset and deadbolt outside cylinder, and the Emtek CY4 is a single cylinder for Emtek hardware. The BEST 1CD core is built for commercial mechanical lock applications such as office buildings, schools, healthcare and government facilities.
17) Is the BEST 1CD core suitable for apartment and residential unit doors?
It is classed as commercial hardware, which is the right call for multi-tenant residential buildings where a property manager needs a masterkey hierarchy across unit doors, common areas and mechanical rooms. Listed applications include multi-tenant residential along with office buildings, schools, healthcare, government facilities and warehouses. For a single-family home with ordinary key-in-knob locks, a retrofit cylinder such as the Kaba Ilco 1599 key-in-knob replacement is the closer fit.
How fast can I get the BEST BES-1CD7A1605 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-1CD7A1605 come with a warranty?
Absolutely. The BEST BES-1CD7A1605 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-1CD7A1605?
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-1CD7A1605 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.
!