Master Lock K81BOX Key Blank f...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$37.78
Image coming soon

Master Lock K81BOX Key Blank for 81, 82, 530, 532, 533, 570, 571, 575, 576, 751, 991, 992, 996, 1710 and 1714 Locks, 50 Pack

(No reviews yet) Write a Review

Model: K81BOX

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

$37.78
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

Master Lock K81BOX Key Blank for 81, 82, 530, 532, 533, 570, 571, 575, 576, 751, 991, 992, 996, 1710 and 1714 Locks, 50 Pack

The Master Lock K81BOX is a commercial-grade replacement key blank designed for use with a wide range of Master Lock padlock and lock models, including the 81, 82, 530, 532, 533, 570, 571, 575, 576, 751, 991, 992, 996, 1710, and 1714 series. Sold in a convenient 50-pack, this key blank is an ideal service part for facilities managers, locksmiths, and property managers who need to maintain keying flexibility across large installations. Sourced directly from Master Lock, this replacement part ensures precise compatibility with the listed lock models for reliable key duplication and key management.

Key Features

  • Broad Lock Compatibility: Compatible with Master Lock models 81, 82, 530, 532, 533, 570, 571, 575, 576, 751, 991, 992, 996, 1710, and 1714 for versatile service applications.
  • Bulk 50-Pack Quantity: Supplied in a 50-pack box format, making it a cost-effective solution for high-volume key management and facilities maintenance programs.
  • Genuine OEM Replacement Part: Designed and supplied by Master Lock as an authentic service part, ensuring proper fit and function with listed lock models.
  • Commercial-Grade Application: Rated for commercial use, supporting demanding property management, institutional, and industrial keying programs.
  • Cylinder and Key Service Part: Classified under Master Lock's service parts, cylinders, and keys category for straightforward procurement and inventory management.

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: K81BOX
  • Features: Service Parts/Cylinders and Keys

Typical Applications

  • Commercial Office Buildings and Property Management
  • Educational Facilities and Campus Security Programs
  • Healthcare Institutions and Hospital Facilities
  • Industrial and Warehouse Access Management
  • Retail Establishments and Loss Prevention Programs
  • Government and Municipal Buildings
  • Locksmith and Key Duplication Services

Why Master Lock K81BOX?

Master Lock replacement parts are engineered to integrate seamlessly with their respective lock platforms, delivering authentic fit and reliable performance across compatible models. The K81BOX key blank is a genuine service part that supports consistent key management across a broad range of Master Lock padlock and locking systems. For commercial facilities requiring dependable, high-volume key service solutions, the 50-pack format provides both convenience and confidence in every duplication task.

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:
K81BOX
Features:
Service Parts/Cylinders and Keys

Master Lock K81BOX – Frequently Asked Questions

1) Which Master Lock padlocks does the K81BOX key blank fit?
The K81BOX blank is cut for Master Lock models 81, 82, 530, 532, 533, 570, 571, 575, 576, 751, 991, 992, 996, 1710 and 1714. If the lock you are keying is not one of those models, this is the wrong blank.
2) Do Master Lock K81BOX keys come already cut, or do they need to be cut to my existing key?
They ship as uncut blanks. A locksmith or anyone with a key duplicating machine cuts them to match an existing working key from one of the compatible Master Lock models. There is no code cutting or keying information supplied with them.
3) I manage a campus with hundreds of Master Lock padlocks. Is this the right blank to stock for rekeying and spares?
For an inventory built on the 81, 82, 530, 532, 533, 570, 571, 575, 576, 751, 991, 992, 996, 1710 or 1714 padlocks, yes. It is rated for commercial use and the 50-count box is meant for exactly that kind of high-volume key program. Facilities running mixed padlock families will need a second blank profile for the models outside that list.
4) Will a Master Lock K81BOX blank work in an Arrow or BEST cylinder?
No. The K81BOX profile is specific to the listed Master Lock padlock models. For an Arrow 1C keyway you want the Kaba Ilco CH1C blank, which is made in nickel silver for that keyway. For BEST small format interchangeable core work, the BEST 1AF Series patented blank is the corresponding blank. Blanks are keyway specific, so a Master Lock blank will not enter either.
5) Is the Master Lock K81BOX an alternative to a BEST 1AF blank for small format interchangeable core work?
No. The Master Lock K81BOX is a key blank for Master Lock padlock and lock models such as the 81, 530, 570, 751, 991 and 1710 series. For BEST cylinder work, the BEST 1AF Series Preferred Patented Blank Key is the blank in the key blanks series for that platform. The two are different keyways and are not interchangeable.
6) How many keys are in a box of Master Lock K81BOX?
Fifty blanks per box. That quantity suits a maintenance shop or locksmith keeping duplication stock on hand rather than someone who needs one or two spare keys for a single padlock.
7) Is the K81BOX a genuine Master Lock part or an aftermarket blank?
It is a Master Lock OEM service part, model K81BOX, supplied under their service parts, cylinders and keys line. For facilities standardizing on Master Lock padlocks, that matters because the blank profile matches the factory keyway rather than approximating it.
8) I need a working key, not a blank. Is the K81BOX what I want?
No. The K81BOX is a blank and will not operate anything until it is cut. If you need a key that works out of the box, look for a cut operating key instead, such as the BEST 1A3A2KS531KS681 operating key for green core A keyway locks, which is supplied as a cut key.
9) Which of these blanks is a patented restricted key versus an open one?
The BEST 1AF Series blank is described as a preferred patented blank key, so duplication is controlled under that patented system. The Master Lock K81BOX is a genuine Master Lock replacement service part for its listed lock models and is supplied in bulk 50-packs for routine in-house duplication. Choose based on whether your program requires key control or open duplication.
10) For a locksmith stocking one blank across multiple manufacturers, does the Master Lock K81BOX cover Arrow or BEST cylinders too?
It does not. The Master Lock K81BOX covers only the Master Lock models 81, 82, 530, 532, 533, 570, 571, 575, 576, 751, 991, 992, 996, 1710 and 1714. Arrow 1C keyway cylinders take the Kaba Ilco CH1C blank, and BEST cylinders take the BEST 1AF Series blank. A shop servicing all three needs all three blanks on the board.
How fast can I get the Master Lock K81BOX 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 K81BOX come with a warranty?
Absolutely. The Master Lock K81BOX 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 K81BOX?
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 K81BOX 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.
!