Bridgeport Fittings Zinc Plate...
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Bridgeport Zinc Plated Steel Conduit Locknut

Bridgeport Fittings Zinc Plated Steel Conduit Locknut with NEMA FB-1 Rating

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Model: 101-S

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

$0.20
$0.14
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Bridgeport Fittings Zinc Plated Steel Conduit Locknut with NEMA FB-1 Rating

Professional conduit fastening solution for secure electrical connections

Bridgeport Fittings delivers reliable conduit connection performance with this zinc plated steel conduit locknut featuring NEMA FB-1 rating. This professional-grade locknut provides secure fastening from both inside or outside the box or enclosure, ensuring versatile installation options for electrical applications. The zinc plated steel construction offers enhanced corrosion resistance for long-term durability in demanding environments.

Professional Features & Benefits

  • Zinc Plated Steel Construction: Provides superior corrosion resistance and long-term durability in harsh environmental conditions
  • NEMA FB-1 Rating: Meets professional electrical standards for reliable performance and safety compliance
  • Dual Installation Capability: Allows secure fastening from both inside or outside the box or enclosure for maximum installation flexibility
  • UL Listed Design: File E9391 certification ensures compliance with electrical safety standards and code requirements
  • Secure Connection Performance: Steel construction provides robust fastening strength between conduit and enclosure connections
  • Professional Grade Material: Steel body construction delivers reliable mechanical strength for demanding electrical applications

Technical Specifications

  • Department: Electrical
  • Division: Electrical H1
  • Inside Or Outside The Box: Operators can securely fasten the conduit from both inside or outside the box or enclosure
  • Nema Rating: FB-1
  • Product Color: yellow
  • Product Material: Steel
  • Secure Connection: The steel conduit locknut fastens the connection from the conduit to the enclosure
  • Sub Division: Electrical-E H2
  • Ul File: E9391
  • Zinc Plated Steel Body: The steel body is zinc plated for long-term use in corrosive environments

Professional Applications

  • Commercial Electrical Installations
  • Industrial Conduit Systems
  • Residential Electrical Projects
  • Maintenance and Repair Operations
  • Electrical Panel Connections
  • Conduit-to-Enclosure Fastening
  • Professional Electrical Contracting

Why Choose Bridgeport Fittings Quality?

Bridgeport Fittings provides professional-grade electrical components with UL Listed certification and NEMA FB-1 rating compliance. The zinc plated steel construction ensures reliable performance and corrosion resistance for long-term durability in demanding electrical applications.

Manufacturer Resources

Product Specs

Department:
Electrical
Division:
Electrical H1
Nema Rating:
FB-1
Product Color:
yellow
Product Material:
Steel
Sub Division:
Electrical-E H2
Certifications:
E9391
Product Type:
Locknut
Product Subgroup:
Conduit Fittings
Product Group:
Conduit & Raceway

Bridgeport Fittings 101-S – Frequently Asked Questions

1) What trade sizes do Bridgeport Fittings steel conduit locknuts come in?
The Bridgeport zinc plated steel locknuts run from 3/8 inch up through 6 inch trade size: 3/8 (part 100), 1/2 (101-S), 3/4 (102-S), 1 (103-S), 1-1/4 (104-S), 1-1/2 (105-S), 2 (106-S), 2-1/2 (107-S), 3 (108-S), 3-1/2 (109-S), 4 (110-S), 5 (111-S) and 6 inch (112-S). Match the locknut to the trade size of the conduit or the threaded hub you are landing, not to the knockout diameter.
2) Is this locknut UL Listed and does it meet NEMA FB-1?
Both. The Bridgeport steel locknut carries NEMA FB-1 and is UL Listed under file E9391. That is the pairing a facility or institutional inspector is usually looking for on conduit fittings, and the UL file number can be cited directly on a submittal.
3) Can I tighten a conduit locknut from outside the box, or does it have to go on inside?
Either way. Bridgeport's steel locknut is made to fasten the conduit to the enclosure from inside or outside the box, so you can land a connector in a panel that is already mounted and still pull the joint up tight from whichever side you can reach.
4) What does a conduit locknut actually do in a panel connection?
It clamps the threaded end of the conduit or connector against the wall of the box or enclosure. Bridgeport's steel locknut makes the mechanical joint from the conduit to the enclosure, pulling the fitting tight against the knockout so the raceway cannot back out. Steel rather than die cast means the teeth bite the enclosure wall when you set it.
5) Is the Cantex 5133330 PVC single toggle switch wallplate an alternative to a Bridgeport steel conduit locknut?
No. The Cantex 5133330 is a PVC single toggle switch wallplate, a cover that mounts over a toggle switch at the device box. The Bridgeport locknut is a threaded zinc plated steel ring that fastens the conduit to the enclosure and can be tightened from inside or outside the box, in trade sizes from 3/8 inch through 6 inch. They serve different points in the installation, so the Cantex plate will not replace the locknut on a conduit-to-box connection.
6) Will a zinc plated steel locknut hold up in a damp or corrosive area?
The body is steel with a zinc plating specifically for long-term service in corrosive environments, so wash-down areas, mechanical rooms and damp industrial spaces are within what it is built for. For direct chemical exposure or constant submersion, spec a fitting rated for that condition instead.
7) Should I order steel or die cast locknuts for a commercial job?
Steel is the one to use where the joint takes mechanical stress or the fitting may be re-torqued, and where a corrosion-resistant finish is wanted; the Bridgeport locknut is a zinc plated steel body carrying NEMA FB-1. Die cast zinc locknuts are lighter duty and more likely to gall or crack when pulled up hard on larger trade sizes.
How fast can I get the Bridgeport Fittings 101-S 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 Bridgeport Fittings 101-S come with a warranty?
Absolutely. The Bridgeport Fittings 101-S 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 Bridgeport Fittings 101-S?
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 Bridgeport Fittings 101-S from ZenSupply?
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