BEST 6CP Series Premium Core f...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$81.00
$73.75
BEST BEST 6CP Series Premium Core for 4S Cylinders BES-6CP

BEST 6CP Series Premium Core for 4S Cylinders with Paracentric Keyway

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Model: BES-6CP5WA1605
From the Premium Cores Collection
$81.00
$73.75
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$81.00
$73.75
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BEST 6CP Series Premium Core for 4S Cylinders with Paracentric Keyway

Premium Security Core for Commercial Cylinder Applications

The BEST 6CP Series Premium Core is specifically designed for 4S cylinders, delivering enhanced security through paracentric keyway design and premium construction. This commercial-grade core features a keyline that crosses the center of the core for superior security performance, while premium keys provide exceptional durability for strenuous daily use in demanding applications.

Professional Features & Benefits

  • Enhanced Security Design: Paracentric keyway with keyline crossing center of core provides superior protection against unauthorized access attempts.
  • Premium Key Construction: Larger and heavier premium keys withstand strenuous daily use better than standard keys for long-term reliability.
  • 4S Cylinder Compatibility: Specifically engineered for seamless integration with BEST 4S cylinder systems.
  • Commercial-Grade Durability: Built to withstand demanding commercial applications with consistent performance over time.
  • Master Key System Support: Fully supported by BEST’s exceptional depth of masterkey expertise for high-level control over assets and facilities.
  • Professional Network Support: Backed by BEST and their network of distributors for comprehensive system management and service.
  • Premium Core Series: Part of BEST’s comprehensive Premium Core lineup including 1C, 1CD, 1CDP, 1CP, 2C, 3C, 5C, 6C, and 6CP options for various applications.

Technical Specifications

  • Collection: Premium 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 premium core is designed for use with compatible BEST 4S cylinders. 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
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • High-Security Commercial Applications

Why Choose BEST Quality?

BEST Premium Core systems deliver professional-grade security with paracentric keyway design and heavy-duty premium key construction for nearly 100 years of proven performance. Backed by BEST’s exceptional masterkey expertise and comprehensive distributor network support. Engineered for demanding commercial applications where enhanced security and reliable access control 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:
Premium Cores
Parts and Accessories Type:
Replacement Parts
Product Attribute:
Parts and Accessories
Product Category:
Mechanical Locks
Department:
Door Hardware

BEST BES-6CP5WA1605 – Frequently Asked Questions

1) Will a BEST 6CP core fit any BEST cylinder housing?
No. The 6CP core is built for BEST 4S cylinders. Other BEST housings take other cores in the premium family (1C, 1CD, 1CDP, 1CP, 2C, 3C, 5C, 6C), so match the core designation to the housing you have rather than assuming any BEST core drops in.
2) How do I choose between 5-pin, 6-pin and 7-pin BEST 6CP cores?
Pin count has to match the master key system you are keying into, not the door. The 6CP comes in 5-pin, 6-pin and 7-pin. If you are adding cores to an existing BEST system, order the same pin count and the same keyway already in service; a 7-pin core will not operate on a 6-pin system's keys. Seven-pin is typically specified on larger facilities that need deeper masterkeying levels.
3) Which BEST keyways can I get the 6CP core in?
Nine keyways are offered on the 6CP: WA, WB, WC, WD, WE, WG, WH, WK and WY. For a building already on BEST, pull an existing key and order the same keyway letter so the new core falls under the same master key system. Mixing keyways on the same facility means separate key systems.
4) What is the difference between ordering a combinated and an uncombinated BEST 6CP core?
Combinated means the core arrives pinned to a key combination; uncombinated means it ships unpinned for a locksmith or in-house shop to combinate to your own system. Both are available. If you order combinated, supply the keymark and marking number so the core is cut into the right system; those are the two fields on the order. Shops with their own pinning kit and key records normally take uncombinated.
5) I need a replacement cylinder for a Schlage or Corbin Russwin lock, not BEST. What should I look at instead?
The 6CP core only serves BEST 4S cylinders, so it is the wrong part for another brand's housing. For Schlage, the 20-057 6-pin full size interchangeable core rim cylinder or the 20-021 and 20-022 rim cylinders with vertical and horizontal tailpiece cams cover most openings. On Corbin Russwin, the 1070 1-1/4 inch 6-pin mortise housing with A01 cloverleaf cam and the 1000 Series 1-1/2 inch mortise cylinder with A02 straight cam are the common mortise replacements.
6) Do I get the whole cylinder with a BEST 6CP order, or only the core?
Only the core. The 6CP is a replacement part that drops into an existing BEST 4S cylinder, so if you do not already have the housing on the door you need the 4S cylinder as well. Property managers rekeying a building typically buy cores alone and keep the housings in place.
7) What is the difference between a BEST 6CP premium core and a Schlage 20-057 FSIC cylinder?
The BEST 6CP is the core alone - a replacement part that drops into a BEST 4S cylinder housing, offered in 5-pin, 6-pin and 7-pin sizes and in WA, WB, WC, WD, WE, WG, WH, WK and WY keyways. The Schlage 20-057 is a full size interchangeable core rim cylinder with a convertible tailpiece cam and two keys, so it brings its own rim housing and tailpiece to the opening. Use the 6CP when the BEST 4S housing is already in the door and only the core changes; use a rim cylinder assembly when there is no housing in place.
8) I need an interchangeable core in a Schlage keyway instead of a BEST keyway - what do I use?
The BEST 6CP premium core is built around BEST paracentric keyways WA, WB, WC, WD, WE, WG, WH, WK and WY, so it cannot be cut to a Schlage key section. Where the facility keys to Schlage, the Schlage 20-057-C full size interchangeable core is a C keyway FSIC core in 643E Aged Bronze. Both are interchangeable cores, but they belong to separate key systems and their housings are not shared.
9) Can I use a BEST 6CP core in a Corbin Russwin mortise lock?
The 6CP is designed for BEST 4S cylinders, so it needs that housing rather than a conventional mortise cylinder body. For a Corbin Russwin mortise opening, the Corbin Russwin 1070 is a 1-1/4 inch 6-pin mortise housing with an A01 cloverleaf cam, and the 1000 series 1-1/2 inch mortise cylinder uses an A02 straight cam. Match the cam to the lock case rather than trying to fit the 6CP core into it.
10) What cylinder should I use on a narrow stile aluminum storefront door instead of a BEST 6CP core?
A 6CP premium core is a commercial replacement core for BEST 4S housings and does not address narrow stile deadlock prep on its own. For aluminum storefront work, the Adams Rite 4036 is a Grade 1 five-pin mortise cylinder with a 1/2 inch minimum door thickness, and the Adams Rite 4024 and 4025 cylinder pulls are made for the MS1847 deadlock and deadlatch. The 4026 cylinder pull covers the 5017 wood door deadlock instead.
11) Our mortise locks are Schlage L9000 - can we key them into a BEST core system?
Not with the 6CP, which is made for BEST 4S cylinders. The Corbin Russwin 1080 is a 1-1/2 inch LFIC mortise cylinder, 6-pin, listed for Schlage L9000 mortise locks with an A01 Schlage L cam - that is the interchangeable core route for those lock cases. The 6CP remains the choice where BEST 4S housings are already standardized across the building.
12) What finishes does the BEST 6CP core come in so it matches my existing lock trim?
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. On commercial openings 626 satin chrome and 613 oil-rubbed bronze are the usual matches to existing lever and mortise trim. Only the core face shows once installed, so match the finish number on the lock, not the door.
13) Is the BEST 6CP core suitable for a school or hospital keying program, or is it a residential part?
It is a commercial part, offered for office buildings, schools, healthcare, government and municipal buildings, industrial and warehouse sites, multi-tenant residential and higher-security applications. The value for institutional buyers is standardization: one keyway and pin count across a campus, with masterkeying handled through BEST's key system support.
14) Is a Schlage full size interchangeable core the same thing as a BEST 6CP core?
No. Both are interchangeable cores, but they are not cross-compatible. The Schlage 20-057-C is an FSIC core in a C keyway; the BEST 6CP uses BEST's own paracentric keyways (WA through WY) and seats in BEST 4S cylinders. Swapping one brand's core into the other brand's housing is not a substitution.
15) What replaces a worn key-in-knob cylinder if the door does not take a BEST core?
The BEST 6CP only serves BEST 4S cylinder housings. For a standard key-in-knob or lever lock with no interchangeable core prep, the Kaba Ilco 1539 is a key-in-knob and lever universal cylinder, the 1599 is a key-in-knob replacement cylinder, and the 1579 covers Sargent knob and lever locks. Those swap into the lockset directly instead of into a core housing.
16) Is a rim cylinder the same thing as a BEST 6CP core for an exit device?
No. The 6CP is a core that seats in a BEST 4S cylinder and carries no cam or tailpiece of its own. A rim cylinder such as the Schlage 20-021 is a 6-pin rim cylinder with a vertical tailpiece cam and two keys, while 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. Confirm whether the exit device trim already holds a BEST 4S housing before ordering a core.
17) For a residential-style handleset or deadbolt, is the BEST 6CP the right core?
The 6CP is a commercial premium core for BEST 4S cylinders and assumes a BEST core housing in the door. Handleset and deadbolt retrofits are usually served by cylinders built for those locks - the Medeco 1075127 is a 5-pin rim type lazy motion single cylinder for handlesets and deadbolts, the 1012040 is a 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts, and the 1065140 is a 5-pin retrofit for Arrow JL interconnected locks and Emtek handleset and deadbolt outside cylinders.
18) What is the difference between ordering a BEST 6CP core and a lock cylinder that ships keyed with cut keys?
The 6CP is offered combinated or uncombinated, so a locksmith can take it uncombinated and pin it to an existing master key system, or order it combinated with a keymark and marking number. Cylinders such as the Falcon A23161-05 G key in lever cylinder, a RU/T series 6-pin G keyway unit, ship keyed different with two cut keys. Choose uncombinated when the core has to join a system already in the field.
19) Can I match a BEST 6CP core finish to other cylinders on the same door?
The 6CP premium core comes in 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. Peer cylinders are often catalogued in a single finish - the Schlage 20-057-C, for example, is listed in 643E Aged Bronze - so where a door mixes brands, confirm the peer finish before assuming a visual match.
How fast can I get the BEST BES-6CP5WA1605 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-6CP5WA1605 come with a warranty?
Absolutely. The BEST BES-6CP5WA1605 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-6CP5WA1605?
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-6CP5WA1605 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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