BEST 1A3A2KS531KS681 Operating...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$17.80
BEST 1A3A2KS531KS681 Operating Key for Green Core, A Keyway

BEST 1A3A2KS531KS681 Operating Key for Green Core, A Keyway

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Model: 1A3A2KS531KS681
From the Standard & Premium Keys Collection
$17.80

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

$17.80
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BEST 1A3A2KS531KS681 Operating Key for Green Core, A Keyway

Maintain rigid facility key control and seamless mechanical operation with the BEST 1A3A2KS531KS681 Operating Key. Manufactured by dormakaba, this is an authentic factory-cut operating key designed specifically for BEST Small Format Interchangeable Cores (SFIC) configured to the standard A Keyway.

This specific key comes pre-cut from the factory to operate Green Construction Cores (often utilized as temporary construction cores during building fit-outs or institutional renovations). Unlike control keys, which extract the core housing from the lever or padlocks, this operating key engages the internal cylinder plug to throw the latch or deadbolt for standard daily access. Machined from high-tensile nickel silver, it resists bending, snapping, and daily frictional wear, ensuring absolute precision within your master-keying matrices.

Product Features

  • Genuine OEM Component: Authentic factory key replacement produced directly by BEST (A dormakaba brand).

  • Green Core Compatibility: Cut explicitly to interact with temporary Green Construction/Disposable SFIC cores.

  • Standard A Keyway Profile: Precision milled to match the industry-standard BEST "A" keyway architecture.

  • Premium Nickel Silver Construction: Forged from thick, high-durability nickel silver alloy to prevent key breakage, wear, and premature cylinder degradation.

  • Standard Daily Operation: Acts as a user/operating key to lock and unlock doors, not a control key used for pulling cores.

Product Specifications

Specification Details
Manufacturer BEST (An ASSA ABLOY / dormakaba Brand)
Model / MPN 1A3A2KS531KS681
Product Type Cut Operating Key (Change Key)
Keyway BEST A Keyway (Standard)
Core Target Color Green Construction Core
Core Style Compatibility 6-Pin or 7-Pin Small Format Interchangeable Cores (SFIC)
Material Nickel Silver
Country of Origin USA
Package Quantity 1 Key

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 1A3A2KS531KS681 – Frequently Asked Questions

1) Will a BEST A keyway operating key work on my green construction cores?
That is exactly what the 1A3A2KS531KS681 is cut for. It is a factory-cut operating key matched to BEST green construction cores in the standard A keyway. Green cores are the temporary cores dropped into SFIC housings during a fit-out or renovation so the trades have access before the permanent keying goes in. If your cores are green and stamped for the A keyway, this key turns them. If your building is already on permanent cores, this is not the key that operates them.
2) Is this BEST key an operating key or a control key for pulling cores?
Operating key only. It turns the plug to throw the latch or deadbolt for normal daily access. It will not remove a core. Pulling an interchangeable core out of a lever, mortise housing, or padlock takes a separate BEST control key cut to that keyway, and buying the wrong one of the two is the most common mistake on SFIC orders.
3) Does a BEST A keyway operating key fit both 6-pin and 7-pin small format cores?
Yes. The key is made for BEST small format interchangeable cores in either 6-pin or 7-pin configuration, so a facility running a mix of both depths is covered on the keyway side. What decides whether it actually turns a given core is the cut, not the pin count.
4) What do I have to specify when ordering a BEST cut operating key?
Two things are required on the order: the keymark and the marking number. The keymark identifies the keying symbol in your system and the marking number is the stamp on the key or core it has to match. Both are stamped on your existing keys and cores, so pull one and read it before ordering. Without those the key cannot be cut to your system, since this is a factory-cut key and not a blank you take to a machine.
5) Will this BEST key work in Schlage, Arrow, or another brand of small format core?
No. This one is milled to the BEST A keyway profile, and a keyway is a physical groove pattern, so it only enters cores broached for BEST A. Other SFIC brands use their own keyway families. For an Arrow 1C keyway, for example, the blank you want is the Ilco CH1C in nickel silver, which is a separate part entirely.
6) Is an Ilco CH1C key blank a substitute for a BEST 1A3A2KS531KS681 operating key?
No, they are two different things and they fit two different cylinders. The Ilco CH1C is an uncut key blank in the Arrow 1C keyway, made of nickel silver, and it has to go on a key machine and be cut to a bitting before it will turn anything. The BEST 1A3A2KS531KS681 arrives factory cut as an operating key for the BEST A keyway, ready to throw the latch or deadbolt on a green construction core with no cutting step. A blank milled for the Arrow 1C profile will not enter a BEST A keyway, so the CH1C is the right buy only when you are cutting your own keys for Arrow 1C cylinders.
7) What should I order if the cylinders on the job are Arrow, not BEST?
Go to the Arrow profile blank. The Ilco CH1C is a nickel silver key blank cut for the Arrow 1C keyway, and it is the correct starting point for Arrow cylinders. The BEST 1A3A2KS531KS681 operating key is milled to the BEST A keyway and cut for BEST small format interchangeable cores in green construction color, so it belongs on doors carrying BEST SFIC. Keyway profile is the deciding fact here, not the pin count or the finish - a key cut for one profile will not enter the other, so confirm which brand of cylinder is actually in the door before you order either one.
8) Can I get a BEST operating key cut to my building's master key system, or is it a blank?
It comes pre-cut from the factory to the keying you supply, not blank. That means it drops straight into an existing master-keying matrix without a locksmith cutting it, provided you give the keymark and marking number off your current key. If what you actually want is uncut stock to duplicate in-house, a key blank is the different item to look for.
9) I have a key machine in the shop - can I just cut my own key instead of ordering a factory cut BEST operating key?
You can, but only if you have a blank in the correct keyway and the bitting for the core. A nickel silver blank such as the Ilco CH1C is the do-it-yourself path, and it is milled for the Arrow 1C profile, so it serves Arrow cylinders rather than BEST ones. The BEST 1A3A2KS531KS681 removes the cutting step entirely: it comes cut from the factory to the BEST A keyway for green construction cores, and it is ordered against a keymark and marking number so the bitting matches the key records already on file for the facility. On a job where the cores are part of an existing master keying matrix, ordering to the keymark keeps the key inside that system instead of standing alone.
10) How many keys come in a BEST 1A3A2KS531KS681 order, and are they durable enough for daily staff use?
One key per order, so a property manager keying out a crew or a floor should order the count they need rather than expecting a set. The key is nickel silver, which is the standard material for commercial cut keys because it resists bending and wear against the plug better than softer brass, and worn keys are what chew up cylinders over time.
11) Is the BEST green core operating key a genuine dormakaba part or an aftermarket copy?
Genuine OEM, produced by BEST, a dormakaba brand, and made in the USA. That matters on institutional and government work where key control policy or the spec on the drawing calls for factory-original keys within a documented BEST system rather than duplicated aftermarket stock.
12) Are BEST cut keys meant for commercial buildings or residential use?
Commercial. The A keyway cut key is part of the BEST small format interchangeable core program, which is what you find in schools, hospitals, offices, and multi-family common areas where cores get swapped rather than locks replaced. Nothing stops it working on a residential door fitted with an SFIC lock, but the system it belongs to is a facility key control program.
How fast can I get the BEST 1A3A2KS531KS681 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 1A3A2KS531KS681 come with a warranty?
Absolutely. The BEST 1A3A2KS531KS681 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 1A3A2KS531KS681?
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 1A3A2KS531KS681 from ZenSupply?
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