Mulberry 40005-2 Galvanized St...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$0.26
Mulberry 40005-2 Galvanized Steel Reducing Washer, 1-1/4-Inch x 1-Inch Trade Size

Mulberry 40005-2 Galvanized Steel Reducing Washer, 1-1/4-Inch x 1-Inch Trade Size

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Model: 40005

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

$0.26
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Mulberry 40005-2 Galvanized Steel Reducing Washer, 1-1/4-Inch x 1-Inch Trade Size

The Mulberry 40005-2 Galvanized Steel Reducing Washer is a 1-1/4-Inch x 1-Inch trade size fitting engineered to adapt conduit connectors and fittings to knockout openings that do not match the connector size. Constructed from galvanized steel, this reducing washer provides a corrosion-resistant, durable solution for aligning a smaller conduit fitting within a larger panel, box, or enclosure knockout. It is a straightforward, cost-effective way to reduce a 1-1/4-Inch knockout down to accept a 1-Inch conduit connector without replacing the enclosure or drilling a new opening. Reducing washers like this one are a common staple in electrical panel work, junction box installations, and conduit runs where mismatched knockout and connector sizes are common on the job site.

Key Features

  • Trade Size: 1-1/4-Inch x 1-Inch reducing washer allows a 1-Inch conduit fitting or connector to be securely seated in a larger 1-1/4-Inch knockout opening.
  • Durable Construction: Galvanized steel material resists rust and corrosion, supporting long-term performance in both indoor and outdoor electrical installations.
  • Reducing Washer Design: Flat, ring-style washer profile fits between the conduit connector locknut and the enclosure wall, closing the gap created by an oversized knockout opening.
  • Simple Field Installation: Slips over the conduit connector threads before the locknut is applied, requiring no special tools for a secure, properly seated fit.
  • Corrosion-Resistant Finish: Galvanized steel coating helps protect the washer from moisture and general environmental exposure over the life of the electrical installation.
  • Versatile Sizing: The 1-1/4-Inch x 1-Inch reduction accommodates a common mismatch between conduit connector size and enclosure or box knockout size.

Technical Specifications

  • Trade Size: 1-1/4-Inch x 1-Inch
  • Material: Galvanized Steel
  • Refer to manufacturer documentation for complete technical specifications.

Typical Applications

  • Conduit Knockout Size Reduction
  • Electrical Panel and Enclosure Installations
  • Commercial and Industrial Wiring Projects
  • Conduit Fitting and Connector Adaptation
  • New Construction and Electrical Renovation Work

Why Mulberry?

Mulberry builds electrical fittings like the 40005-2 reducing washer from galvanized steel to deliver dependable, corrosion-resistant performance for electricians and contractors working on panels, boxes, and enclosures. This 1-1/4-Inch x 1-Inch reducing washer offers a simple, reliable way to match conduit fittings to existing knockouts, helping installers complete secure conduit connections efficiently without swapping out an enclosure or drilling a new opening. Choose Mulberry for consistent, well-constructed galvanized steel electrical hardware built for demanding professional installations.

Manufacturer Resources

Mulberry Full Line Catalog

Product Specs

Product Material:
Galvanized Steel
Product Type:
Reducing Washer
Department:
Electrical
Product Subgroup:
Conduit Fittings
Product Group:
Conduit & Raceway

Mulberry 40005 – Frequently Asked Questions

1) Do I need a reducing washer or should I just use a larger conduit connector?
A reducing washer is the fix when the knockout is bigger than the conduit you are running, for example a 1-1/4-inch knockout on a panel and a 1-inch EMT or rigid connector. Upsizing the connector means upsizing the conduit run, which is not what you want. The Mulberry washer closes the gap so the 1-inch connector seats and the locknut draws tight against the box wall. If the knockout is smaller than your connector, a washer will not help, you need a step bit or a knockout punch to enlarge it.
2) How does a reducing washer install on a conduit connector and box knockout?
It slips over the connector threads and sits flat between the locknut and the enclosure wall, closing the gap left by an oversized knockout. Run the connector through the opening, drop the washer on, then tighten the locknut down. No drilling, no special tools, and no need to swap the panel or box.
3) Can I use a galvanized steel reducing washer outdoors or in a damp location?
The Mulberry 40005 series washers are galvanized steel, which resists rust and corrosion and is called out for both indoor and outdoor electrical installations. Keep in mind the washer itself does not seal the opening, it only reduces it, so a wet-location enclosure still needs a connector and fitting rated for that environment.
4) Will one reducing washer close the gap, or do I need a pair?
The washer is a flat, ring-style profile that sits between the locknut and the enclosure wall on one side. On panels and boxes where the opening needs to be covered from inside and out, electricians commonly set a washer on each face of the sheet metal so the connector is centered and the gap is closed both sides. Order quantity accordingly, the part is sold as the individual washer.
5) What is the Mulberry 40005-2 reducing washer made of?
Galvanized steel throughout, with the zinc coating providing the corrosion resistance. That makes it suited to panel work, junction boxes, and conduit runs in commercial and industrial wiring where the fitting has to hold up over the life of the install.
How fast can I get the Mulberry 40005 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 Mulberry 40005 come with a warranty?
Absolutely. The Mulberry 40005 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 Mulberry 40005?
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 Mulberry 40005 from ZenSupply?
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