Master Lock 293S6121 Replaceme...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$43.43
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Master Lock 293S6121 Replacement Boron Shackle for Pro Series Padlocks, 1-3/8" Tall

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Model: 293S6121

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

$43.43
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Master Lock 293S6121 Replacement Boron Shackle for Pro Series Padlocks, 1-3/8" Tall

The Master Lock 293S6121 is a genuine replacement boron shackle engineered for compatibility with the Pro Series padlock lineup, including models 6121, 6421, 6621, 6840, 6841, 7040, 7041, and 7042. Featuring a 1-3/8" tall shackle profile, this commercial-grade component is designed to restore or maintain the security performance of your existing Pro Series padlock. Constructed from boron-alloy steel, the shackle delivers the cut and saw resistance expected from Master Lock's professional hardware line.

Key Features

  • Shackle Height: 1-3/8" tall shackle profile engineered to match original Pro Series specifications for a precise, factory-fit replacement.
  • Boron-Alloy Construction: Boron steel shackle provides enhanced resistance to cutting and sawing, maintaining the security integrity of the padlock.
  • Broad Padlock Compatibility: Designed for use with Master Lock Pro Series models 6121, 6421, 6621, 6840, 6841, 7040, 7041, and 7042 for versatile service-part coverage.
  • Genuine Replacement Part: OEM-grade component ensures proper fit and function without compromising the padlock's rated security performance.
  • Commercial-Grade Application: Rated for commercial use, making this shackle suitable for high-demand environments where reliable security is critical.
  • Service Parts Category: Classified under Service Parts/Cylinders and Keys, ensuring straightforward sourcing for maintenance and repair programs.

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: Padlocks
  • Parts and Accessories Type: Replacement Parts
  • Commercial/Residential: Commercial
  • Product Model: 293S6121
  • Features: Service Parts/Cylinders and Keys

Typical Applications

  • Commercial Office Buildings
  • Industrial and Warehouse Facilities
  • Retail Establishments
  • Educational Facilities
  • Government and Municipal Buildings
  • Multi-Tenant Residential Properties
  • Fleet and Equipment Yard Security

Why Master Lock 293S6121?

Master Lock Pro Series padlock components are built to commercial standards, with the 293S6121 boron shackle delivering the same material quality and dimensional precision as the original factory-installed part. Sourcing a genuine replacement ensures that the padlock's security rating and mechanical performance are fully preserved, making this the trusted choice for facilities maintenance teams and security professionals managing high-demand installations.

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:
Padlocks
Parts and Accessories Type:
Replacement Parts
Commercial/Residential:
Commercial
Product Model:
293S6121
Features:
Service Parts/Cylinders and Keys

Master Lock 293S6121 – Frequently Asked Questions

1) Which Master Lock padlocks does the 293S6121 replacement shackle fit?
The 293S6121 boron shackle is the service part for Master Lock Pro Series padlocks 6121, 6421, 6621, 6840, 6841, 7040, 7041 and 7042. It is a genuine replacement sized to the original factory shackle for those models, so the lock body, cylinder and keying stay as they are and only the shackle changes.
2) How tall is the shackle on the Master Lock 293S6121, and will it clear my hasp?
It is a 1-3/8 inch tall shackle profile. That is the same height as the shackle originally fitted to the Pro Series models it serves, so if your existing lock already passes through the hasp or chain, the replacement clears it the same way. If you need more vertical clearance than the original gave you, this part will not provide it.
3) Can I replace just the shackle instead of buying a whole new padlock?
Yes, and that is the point of the 293S6121. It is an OEM service part, so a facilities or maintenance team can restore a cut or damaged Pro Series padlock while keeping the existing keyway and key system intact. For a keyed-alike system across a site, swapping the shackle keeps the lock in the same key hierarchy rather than forcing a rekey.
4) Is the 293S6121 shackle boron steel or just hardened steel?
Boron-alloy steel. That is what gives Pro Series shackles their cut and saw resistance, and using the genuine boron part keeps the padlock performing the way it did out of the box. A generic hardened shackle of the same height would not match that material spec.
5) I have a Master Lock Pro Series padlock but I am not sure of the model number. How do I confirm this is the right shackle?
Check the number stamped on the lock body or the back of the padlock. The 293S6121 covers 6121, 6421, 6621, 6840, 6841, 7040, 7041 and 7042 only. If your lock stamps a different Pro Series number, or a longer shackle option, this is not your part, since the 1-3/8 inch height is matched to those specific bodies.
6) Is this shackle rated for commercial use or is it a homeowner part?
Commercial. Master Lock lists the 293S6121 as a commercial-grade component, and it is used in warehouses, equipment yards, schools, municipal buildings and multi-tenant properties where the padlock is cycled hard.
How fast can I get the Master Lock 293S6121 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 293S6121 come with a warranty?
Absolutely. The Master Lock 293S6121 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 293S6121?
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 293S6121 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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