Master Lock K1CR A850 Duplicat...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
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Master Lock K1CR A850 Duplicate Key Cut to Code A Commercial Replacement Key

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Model: K1CR A850

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

$24.89
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Master Lock K1CR A850 Duplicate Key Cut to Code A Commercial Replacement Key

The Master Lock K1CR A850 is a commercial-grade duplicate key precisely cut to code A, designed as a genuine replacement part for compatible Master Lock mechanical lock cylinders. Purpose-built for professional door hardware applications, this key is a factory-cut service component that ensures reliable, consistent operation with the designated lock series. Ideal for facilities managers, locksmiths, and security professionals requiring an exact-match replacement key for maintained access control systems.

Key Features

  • Precision Cut to Code A: Factory cut to the exact A key code, ensuring a precise fit and smooth operation with compatible Master Lock cylinders and lock systems.
  • Genuine Master Lock Replacement Part: Engineered as an authentic service part for Master Lock mechanical lock cylinders, maintaining the integrity of the original locking mechanism.
  • Commercial-Grade Quality: Rated and designated for commercial applications, providing the durability and consistency expected in professional door hardware environments.
  • Cylinder and Key Service Component: Classified as a cylinders and keys service part, making it the correct replacement for maintaining and servicing compatible Master Lock hardware.
  • Direct Compatibility: Matched to the K1CR A850 model, ensuring straightforward identification and compatibility verification for lock service professionals.
  • Reliable Access Control Maintenance: Supports ongoing facility security management by providing readily available, correctly keyed replacement parts for existing lock installations.

Technical Specifications

  • Department: Door Hardware
  • Product Category: Mechanical Locks
  • Product Group: Parts and Accessories
  • Subcategory: Parts and Accessories
  • Product Subgroup: Parts and Accessories
  • Product Type: Keys
  • Parts and Accessories Type: Replacement Parts
  • Commercial/Residential: Commercial
  • Product Model: K1CR A850
  • Features: Service Parts/Cylinders and Keys

Typical Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Master Lock K1CR?

Master Lock replacement keys are manufactured to exacting standards, delivering the precise tolerances required for smooth, dependable operation in commercial lock cylinders. The K1CR A850 replacement key is a genuine service component, ensuring that facilities and security professionals can maintain access control systems with confidence in fit, function, and long-term reliability.

Manufacturer Resources

Product Specs

Department:
Door Hardware
Product Category:
Mechanical Locks
Product Group:
Parts and Accessories
Subcategory:
Parts and Accessories
Product Subgroup:
Parts and Accessories
Product Type:
Keys
Parts and Accessories Type:
Replacement Parts
Commercial/Residential:
Commercial
Product Model:
K1CR A850
Features:
Service Parts/Cylinders and Keys

Master Lock K1CR A850 – Frequently Asked Questions

1) Is the Master Lock K1CR key already cut, or do I need it cut to my code?
It ships factory cut. The K1CR is a duplicate key cut to a specific code, so you order the code you need rather than having a blank cut locally. Two codes are offered, A850 and A960, so pick the one stamped on the key or cylinder you are matching.
2) Which code do I order for a Master Lock K1CR replacement key, A850 or A960?
Match the code already in service. The K1CR is supplied cut to code, and the two codes available are A850 and A960. Check the stamping on your existing key or the cylinder record for the opening before ordering, because a key cut to the other code will not turn that cylinder.
3) Will the Master Lock K1CR key work in any Master Lock cylinder?
No. It is a service key for compatible Master Lock mechanical lock cylinders keyed to the matching code, not a universal key. If your cylinder is a different keyway or a different key code, this key will not operate it.
4) I need extra keys for my building but I do not know the code. Should I buy a blank instead?
If you cannot confirm the code, a cut-to-code key like the K1CR A850 is the wrong buy, since it only works on cylinders keyed to that code. For a locksmith cutting to an existing key on the bench, a blank is the right item. ZenSupply carries key blanks such as the BEST 1AF Series patented blank and the Kaba Ilco CH1C blank for the Arrow 1C keyway in nickel silver, both of which are cut on site.
5) What is the difference between a Master Lock K1CR key and a BEST 1AF key blank?
The Master Lock K1CR arrives already cut to code - the A850 and A960 cuts are factory-cut replacement keys ready to operate the matching Master Lock cylinder with no further work. The BEST 1AF Series Preferred Patented Blank Key is a key blank, meaning it ships uncut and has to be run on a key machine to a code or a duplicate before it will turn anything. If you need a working key in hand for an existing opening, the cut key is the one to order; if you are a locksmith originating keys in your own shop, the blank is the format you want.
6) Can a BEST operating key be used in place of a Master Lock K1CR replacement key?
No. The BEST 1A3A2KS531KS681 is an operating key for a BEST green core in the A keyway - it is cut to a BEST keying assignment and fits BEST small format interchangeable core cylinders. The Master Lock K1CR is a genuine service part for Master Lock mechanical lock cylinders, cut to Master Lock code A. The two are different manufacturers' keyways, so neither will enter the other's cylinder regardless of the cut. Match the key to the brand stamped on the cylinder, not to the letter A appearing in both descriptions.
7) I need keys for Arrow cylinders, not Master Lock - what should I order instead?
The Master Lock K1CR is cut for Master Lock mechanical lock cylinders, so it will not serve an Arrow opening. For Arrow, the Kaba Ilco CH1C is a key blank for the Arrow 1C keyway in nickel silver construction. Note that it comes uncut, so it needs to be cut to your Arrow code or duplicated from an existing working key before it goes on the ring.
8) Can I use the Master Lock K1CR to keep several locks on the same key?
Yes, as long as those cylinders are keyed alike to the same code. Ordering the same code, A850 or A960, gives you matching duplicates for every cylinder on that code, which is how facilities keep an existing keyed-alike group running without rekeying.
9) For a facility standardizing on one key program, how does a cut-to-code Master Lock key compare with ordering blanks?
The Master Lock K1CR is a commercial replacement key supplied cut to code, available in the A850 and A960 cuts, so a maintenance department can order additional working copies directly without any cutting capability on site. Blank stock such as the BEST 1AF Series Preferred Patented Blank Key or the Kaba Ilco CH1C for the Arrow 1C keyway assumes you have a key machine and the code records in house, which suits a locksmith shop or a large facility running its own key control desk. Both approaches work; the deciding factor is whether cutting happens in your building or at the factory.
10) Is this a commercial key or a residential one?
The K1CR is designated for commercial use and catalogued as a Master Lock service part for cylinders and keys, so it is the key property managers, locksmiths and MRO buyers pull for maintained openings in offices, schools, healthcare, retail, warehouses and government buildings.
How fast can I get the Master Lock K1CR A850 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 Master Lock K1CR A850 come with a warranty?
Absolutely. The Master Lock K1CR A850 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 Master Lock K1CR A850?
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 Master Lock K1CR A850 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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