Master Lock K27BOX Key Blanks ...
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$26.93
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Master Lock K27BOX Key Blanks for Models 21/24/25/27/31/101/220/230 with 27 Cylinder, 50 Pack

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Model: K27BOX

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

$26.93
$26.38
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Master Lock K27BOX Key Blanks for Models 21/24/25/27/31/101/220/230 with 27 Cylinder, 50 Pack

The Master Lock K27BOX Key Blanks are a commercial-grade replacement part solution designed specifically for use with Master Lock padlock models 21, 24, 25, 27, 31, 101, 220, and 230 equipped with the 27 cylinder. Supplied in a convenient 50-pack box, these key blanks are ideal for facilities, locksmiths, and security professionals who require a reliable stock of service keys for ongoing key-cutting and lock maintenance operations. As genuine replacement components, they ensure a precise fit and consistent performance with the compatible Master Lock models listed above.

Key Features

  • Broad Model Compatibility: Engineered specifically for Master Lock padlock models 21, 24, 25, 27, 31, 101, 220, and 230 fitted with the 27 cylinder, ensuring accurate fitment and reliable key operation.
  • 50-Pack Quantity: Supplied in a box of 50 key blanks, providing an efficient bulk supply for locksmith shops, facilities maintenance teams, and commercial service operations.
  • Cylinder-Specific Design: Matched to the 27 cylinder profile for precise cutting tolerances and dependable key duplication results.
  • Commercial-Grade Parts: Classified as commercial replacement parts and accessories, suitable for professional service and maintenance applications.
  • Genuine Service Parts: Designed as authentic service components in the cylinders and keys category, supporting proper lock function and longevity.
  • Streamlined Inventory Management: Bulk box packaging simplifies storage and inventory tracking for high-volume key service environments.

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: K27BOX
  • Features: Service Parts/Cylinders and Keys

Typical Applications

  • Locksmith Shops and Key Duplication Services
  • Commercial Facilities Maintenance Programs
  • Educational Institution Security Operations
  • Industrial and Warehouse Access Management
  • Government and Municipal Facility Maintenance
  • Retail Establishment Security Departments
  • Multi-Tenant Residential and Commercial Property Management

Why Master Lock K27BOX?

Master Lock K27BOX Key Blanks are purpose-built for compatibility with a broad range of Master Lock padlock models, delivering consistent, cylinder-matched performance for professional key service applications. The 50-pack format ensures commercial users maintain an efficient, readily available inventory of genuine replacement key blanks, minimizing downtime and supporting reliable lock maintenance across high-demand environments.

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:
K27BOX
Features:
Service Parts/Cylinders and Keys

Master Lock K27BOX – Frequently Asked Questions

1) Which Master Lock padlocks do K27BOX key blanks fit?
The K27BOX blanks are cut for Master Lock padlock models 21, 24, 25, 27, 31, 101, 220 and 230 when those padlocks are built with the 27 cylinder. The cylinder matters more than the model number: if the padlock body is one of those models but carries a different cylinder, the blank will not enter the keyway.
2) Can I use these blanks to key a whole facility's padlocks alike?
They are the blank side of the job only. The K27BOX gives you uncut blanks for Master Lock 27-cylinder padlocks, so you can duplicate an existing key or cut to a bitting you control across models 21, 24, 25, 27, 31, 101, 220 and 230. You still need a key machine and either a sample key or the code; no bitting is supplied with the blanks.
3) I need blanks for Arrow or BEST cylinders, not Master Lock. Is K27BOX the wrong part?
Wrong keyway. K27BOX only fits the Master Lock 27 cylinder. For an Arrow 1C keyway, the Kaba Ilco CH1C blank in nickel silver is the correct blank, and for BEST small format interchangeable core work the BEST 1AF Series patented blank covers that keyway. Blanks are keyway specific and do not cross between brands.
4) Will a Kaba Ilco CH1C key blank work in a Master Lock padlock with a 27 cylinder?
No. The Kaba Ilco CH1C is a key blank cut for the Arrow 1C keyway in nickel silver, so its blade profile is made for Arrow cylinders. The Master Lock K27BOX blanks are matched to the 27 cylinder profile used on Master Lock padlock models 21, 24, 25, 27, 31, 101, 220 and 230, and that is the keyway they will enter. Keep the two separate in the key cabinet even though both are uncut blanks.
5) I need blanks for a BEST small format interchangeable core system, not Master Lock padlocks. What should I order?
Order the BEST 1AF Series Preferred Patented Blank Key, which is a key blank made for BEST's 1AF keyway system. The Master Lock K27BOX blanks are cylinder-specific to the Master Lock 27 cylinder found on padlock models 21, 24, 25, 27, 31, 101, 220 and 230, so they have no application in a BEST core. A facility running both padlocks and BEST cores will stock each separately.
6) Are these genuine Master Lock blanks or aftermarket?
K27BOX is a Master Lock replacement service part, matched to the 27 cylinder profile, so cutting tolerances line up with the factory keyway rather than an approximated aftermarket blank.
7) Do I get cut keys or uncut blanks with K27BOX?
Uncut blanks. If you want a key that works out of the box rather than one you cut yourself, that is a cut key instead, such as the BEST 1A3A2KS531KS681 operating key for a green core in the A keyway. K27BOX has to be cut before it will operate anything.
8) What is the difference between ordering the Master Lock K27BOX and ordering a cut key like the BEST 1A3A2KS531KS681?
The BEST 1A3A2KS531KS681 is an operating key supplied already cut, for a green core in the A keyway, so it is ordered when you need a working key to a known bitting. The Master Lock K27BOX is supplied as uncut blanks in a box of 50, intended to be cut on your own machine for Master Lock padlocks using the 27 cylinder. Choose the cut key when you want a finished key in hand and the blanks when you are running key duplication in house.
9) Is there a straight equivalent to the Master Lock K27BOX from another brand for the same padlocks?
For Master Lock padlocks built on the 27 cylinder - models 21, 24, 25, 27, 31, 101, 220 and 230 - the K27BOX blanks are the cylinder-matched choice, supplied 50 to a box for shops cutting volume. The other blanks commonly stocked alongside them serve different keyways entirely: the Kaba Ilco CH1C covers the Arrow 1C keyway and the BEST 1AF Series covers BEST's patented 1AF system. Match the blank to the cylinder, not to the lock brand alone.
10) Are Master Lock K27BOX blanks suitable for commercial and institutional use?
Yes, they are classified as commercial service parts and are stocked for locksmith shops, school and campus security operations, warehouse access programs, municipal maintenance and multi-tenant property management.
How fast can I get the Master Lock K27BOX 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 K27BOX come with a warranty?
Absolutely. The Master Lock K27BOX 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 K27BOX?
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 K27BOX 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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