BEST 3A Series Large Rectangul...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$16.00
$14.81
BEST 3A Series Large Rectangular Shape Cut Key for Commercial Lock Systems

BEST 3A Series Large Rectangular Shape Cut Key for Commercial Lock Systems

(No reviews yet) Write a Review

Model: BES-3A1A2KS473KS800
From the Standard & Premium Keys Collection
$16.00
$14.81

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

$16.00
$14.81
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 3A Series Large Rectangular Shape Cut Key for Commercial Lock Systems

Professional Cut Key Solution for BEST Lock Systems

The BEST 3A Series Large Rectangular Shape Cut Key provides reliable access control for commercial lock systems with BEST’s proven combinating and keying technology. This cut key features a large rectangular bow design for easy identification and handling in professional applications. BEST’s combinating and keying systems help distributors provide keys and cores that work together seamlessly, ensuring security and integrity of every opening while offering easy maintenance and management throughout deployment.

Professional Features & Benefits

  • Large Rectangular Bow Design: 3A series shape provides enhanced grip and visual identification for efficient key management in commercial environments.
  • Seamless System Integration: Works with BEST cores and lock systems to ensure security and integrity of every opening with reliable operation.
  • Custom Key Stamping Available: Keys can be personalized to an institution or organization for easier identification and protection against unauthorized duplication.
  • Professional Key Management: Easy maintenance and management throughout deployment with BEST’s proven combinating and keying systems.
  • Commercial-Grade Construction: Engineered for demanding commercial applications where reliable access control is essential.
  • Multiple Shape Options: Part of comprehensive BEST key shape series including 1A Standard Bow, 1AP Premium Bow, 2A Large Round, 4A Access Bow, and 9A Blockout Blade configurations.

Technical Specifications

  • Collection: Standard & Premium Keys
  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Parts and Accessories Type: Replacement Parts
  • Product Attribute: Parts and Accessories
  • Product Category: Parts and Accessories
  • Product Group: Parts and Accessories
  • Product Subgroup: Key Blanks and Accessories
  • Product Type: Keys
  • Series: Cut Keys
  • Subcategory: Key Blanks and Accessories

Installation & Operation

This cut key is designed for use with compatible BEST lock systems and cores. Verify key compatibility with existing lock hardware before use. Follow institutional key control procedures and maintain proper key management protocols for security.

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 combinating and keying systems deliver professional-grade reliability with proven technology designed for seamless integration and security. Custom key stamping options provide enhanced identification and protection against unauthorized duplication. Engineered for demanding commercial applications where dependable access control and key management are essential.

Manufacturer Resources

Key and Core Brochure

Product Specs

Product Group:
Parts and Accessories
Series:
Cut Keys
Product Subgroup:
Key Blanks and Accessories
Product Type:
Keys
Subcategory:
Key Blanks and Accessories
Commercial/Residential:
Commercial
Collection:
Standard & Premium Keys
Parts and Accessories Type:
Replacement Parts
Product Attribute:
Parts and Accessories
Product Category:
Parts and Accessories
Department:
Door Hardware

BEST BES-3A1A2KS473KS800 – Frequently Asked Questions

1) What do I have to specify when ordering a BEST 3A cut key?
Two things get entered on the order and both are required: the Keymark and the Marking Number. The Keymark identifies your keying system so the key is cut to your existing combination, and the Marking Number is what gets stamped on the bow. Beyond that you pick the keyway, the key level (Control, Grandmaster, Master, Submaster, or Operating), and the key stamp option. Without the Keymark and marking number the key can't be cut to your system.
2) Which BEST keyways can a 3A cut key be ordered in?
Twenty keyways are available on the BEST 3A large rectangular bow key: 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 BEST cores, since a key cut in the wrong keyway will not enter the plug regardless of how it is bitted.
3) What is the difference between a control key and an operating key on a BEST system?
They do different jobs on the same core. An operating key throws the lock. A control key retracts the figure-eight core from the housing so you can pull and swap it without taking the lock apart, which is how a BEST small format interchangeable core system gets rekeyed in seconds. The 3A cut key can be ordered as either, along with Master, Submaster or Grandmaster levels for buildings running a hierarchy. Facilities normally keep control keys under separate custody from operating keys.
4) Is the BEST 3A key a blank or is it cut to my keying system?
It ships cut, not blank. The 3A is supplied as a cut key combinated to the Keymark you provide, so it arrives ready to work in your existing BEST cores. If you want uncut stock to bit yourself, you want a key blank instead, such as the Kaba Ilco CH1C blank in nickel silver for Arrow 1C keyway systems.
5) Will a BEST 3A cut key work in the locks already on my building's doors?
It works in BEST cores and lock systems, and it will operate your doors as long as two things line up: the keyway matches what your cores are cut for, and you order against your existing Keymark so the bitting matches your system. Get either wrong and the key either won't enter the plug or won't turn it. Pull one of your current keys and read the keyway letter and keymark off it before ordering replacements.
6) Can an Ilco CH1C key blank be used in place of a BEST 3A cut key?
No. The Ilco CH1C is a nickel silver key blank cut for the Arrow 1C keyway, so it is both uncut and on a different keyway family than a BEST 3A key. The BEST 3A Series large rectangular cut key is supplied already combinated to a specified keymark and marking number, in BEST keyways A, B, C, D, DD, E, F, G, H, J, K, L, M, N, O, R, TB, TC, TD, and TE, and in Control, Grandmaster, Master, Submaster, or Operating key types. A blank on an Arrow keyway will not enter a BEST core, and a blank of any kind still has to be cut before it opens anything.
7) Why choose the 3A large rectangular bow instead of the standard BEST 1A bow?
It comes down to grip and identification. The 3A has a large rectangular bow, which gives more surface for stamping and more purchase for turning a stiff lock, and it is easier to pick out of a ring at a glance. The standard 1A bow is the smaller everyday shape. BEST also offers a 1AP premium bow, a 2A large round, a 4A access bow and a 9A blockout blade. Institutions running several key levels often assign a different bow shape per level so a master is visually distinct from an operating key.
8) Can I get BEST 3A keys stamped with our facility's own marking?
Yes. Custom stamping is part of the order, and the Marking Number field is required, so every key goes out identified. Keys can be personalized to the institution or organization, which makes key control audits easier and discourages unauthorized duplication at a hardware counter. Two key stamp options are offered, KS208KS800 and KS473KS800.
9) I need keys for an Arrow cylinder and BEST cores in the same building - do I order the same key for both?
No, they are separate orders on separate keyways. The Arrow openings take a key on the Arrow 1C keyway, which is what the Ilco CH1C blank is made for; the BEST openings take a BEST 3A cut key, ordered by keymark and marking number on one of the BEST keyways such as A, B, C, D, E, F, G, or the TB through TE group. A single key cannot serve both, so a facility running both cylinder brands keeps two key systems and two sets of records.
10) Is the BEST 3A cut key meant for commercial use or will it work for a house?
This is commercial hardware. The 3A cut key is built for BEST commercial keying systems in offices, schools, hospitals, government and municipal buildings, industrial and warehouse sites, multi-tenant residential and retail. Residential locks generally don't use BEST interchangeable cores, so unless a home has had BEST cores installed, this is not the key for it.
How fast can I get the BEST BES-3A1A2KS473KS800 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-3A1A2KS473KS800 come with a warranty?
Absolutely. The BEST BES-3A1A2KS473KS800 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-3A1A2KS473KS800?
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-3A1A2KS473KS800 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.
!