Bridgeport Fittings ALI Series...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$2.51
Bridgeport ALI Aluminum Solderless Lugs

Bridgeport Fittings ALI Series Aluminum Solderless Lugs with Tin Electro-Plate Finish

(No reviews yet) Write a Review

Model: ALI-50

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

$2.51
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

Bridgeport Fittings ALI Series Aluminum Solderless Lugs with Tin Electro-Plate Finish

Professional Electrical Connectivity Solutions

Bridgeport Fittings ALI Series Aluminum Solderless Lugs deliver reliable electrical connections for professional applications. These tin-plated aluminum lugs provide versatile connectivity solutions suitable for both copper and aluminum conductors, offering professional-grade performance with NEMA FB-1 rating and UL listing for demanding electrical installations.

Professional Features & Benefits

  • Dual Conductor Compatibility: Suitable for use with both copper and aluminum conductors, providing installation flexibility across diverse electrical systems.
  • Tin Electro-Plate Finish: Enhanced corrosion resistance and improved conductivity for long-term reliability in various environmental conditions.
  • NEMA FB-1 Rating: Meets professional electrical standards for reliable performance in commercial and industrial applications.
  • UL Listed Design: File E155561 certification ensures compliance with safety standards and code requirements.
  • Aluminum Construction: Lightweight yet durable material provides excellent electrical conductivity while reducing installation weight.
  • Lay-In Design: Simple installation method for efficient grounding in high-heat applications and various electrical configurations.

Technical Specifications

  • Copper Or Aluminum: These flexible lugs are suitable for use with either copper or aluminum conductors in a range of si
  • Country Of Origin: United States
  • Department: Electrical
  • Division: Electrical H1
  • Lay In Lugs: Tin-plated aluminum lugs are a simple way to ground conductors in high-heat applications including
  • Nema Rating: FB-1
  • Product Family: Connectivity
  • Product Finish: Tin electro-plate
  • Product Material: Aluminum
  • Professional Performance: Designed to meet the high standards of Bridgeport, an industry-leader in fittings and electrical so
  • Sub Division: Electrical-E H2
  • Ul File: E155561

Professional Applications

  • Commercial Electrical Systems
  • Industrial Facilities
  • High-Heat Grounding Applications
  • Multi-Conductor Installations
  • Professional Electrical Panels
  • Equipment Grounding Systems

Why Choose Bridgeport Fittings Quality?

Bridgeport Fittings delivers industry-leading electrical connectivity solutions with UL listed performance and NEMA FB-1 rating. The tin electro-plate finish and aluminum construction provide reliable, long-lasting performance for professional electrical installations across commercial and industrial applications.

Manufacturer Resources

Product Specs

Country Of Origin:
United States
Department:
Electrical
Division:
Electrical H1
Nema Rating:
FB-1
Product Finish:
Tin electro-plate
Product Material:
Aluminum
Sub Division:
Electrical-E H2
Certifications:
E155561
Product Type:
Mechanical Lug
Product Subgroup:
Lugs & Terminals
Product Group:
Wire Connectors & Terminals

Bridgeport Fittings ALI-50 – Frequently Asked Questions

1) Can Bridgeport ALI aluminum lugs be used on copper wire, or only aluminum?
Both. The ALI Series lugs are rated for use with either copper or aluminum conductors, so one lug covers a mixed panel. The body is aluminum with a tin electro-plate finish, which is what makes the copper connection acceptable and adds corrosion resistance at the contact surface.
2) What stud or bolt sizes will these solderless lugs bolt to?
The ALI Series comes with #10, 1/4 inch, and 5/16 inch stud holes, and each of those is available against all three wire ranges. Measure the stud or the bolt hole on your ground bar or equipment pad first, since the lug tongue has to seat flat on the pad for a solid connection.
3) Are these Bridgeport lugs UL listed for an inspected commercial job?
Yes. The ALI Series lugs are UL listed under file E155561 and carry a NEMA FB-1 rating, which is the fittings standard an electrical inspector on a commercial or industrial job will be looking for.
4) Do I need a crimper for these, or do they just bolt on?
No crimping and no soldering. These are solderless lay-in lugs: the conductor lays into the barrel and a set screw clamps it, then the tongue bolts to the stud. That means a screwdriver or hex key and a wrench, which is why they get used for field grounding where dragging a hydraulic crimper is not practical.
5) Will aluminum lugs hold up for grounding in a hot equipment room or on a transformer?
That is the intended use. Bridgeport describes the tin-plated aluminum lay-in lug as a way to ground conductors in high-heat applications, and lists industrial facilities, equipment grounding systems, and electrical panels among the applications. The tin plate is there for corrosion resistance at the contact face.
6) Are Bridgeport ALI lugs made in the USA for a Buy American spec?
Country of origin on the ALI Series is the United States, which is the line item most government, education, and healthcare procurement packages ask for when domestic sourcing is written into the spec.
7) If I need the largest conductor range, which ALI part number do I order?
ALI-252 is the top of the range, taking 250 MCM down to 6 AWG on a 5/16 inch stud. That same 250 MCM to 6 barrel is also offered with #10 and 1/4 inch studs if your equipment pad uses a smaller bolt.
8) Is the Cantex 5133330 PVC single toggle switch wallplate an alternative to a Bridgeport ALI aluminum solderless lug?
No. The Cantex 5133330 is a PVC single toggle switch wallplate, a cover that mounts over a toggle switch at a device box. The Bridgeport ALI is a tin electro-plated aluminum solderless lay-in lug that terminates copper or aluminum conductors onto a stud, offered in #10, 1/4 inch and 5/16 inch stud sizes with wire ranges spanning 4 to 14, 1/0 to 14, and 250 MCM to 6. They serve unrelated functions, so a wallplate will not stand in for a conductor termination.
9) I need a grounding termination for a high-heat panel - does a PVC wallplate work for that?
No. For grounding conductors in high-heat applications, the Bridgeport ALI Series lay-in lug is the applicable part: tin electro-plated aluminum, rated NEMA FB-1, UL file E155561, and suitable for either copper or aluminum conductors. The Cantex 5133330 is a PVC single toggle switch wallplate and carries no conductor termination capability, so it does not address a grounding connection.
10) Can I land two conductors in one ALI lug?
Each ALI lug is a single-barrel solderless lug, so it is one conductor per lug within the marked wire range. For multiple conductors, land each on its own lug or use a ground bar and bolt several lugs to it, matching the #10, 1/4 inch, or 5/16 inch stud size to the bar's holes.
How fast can I get the Bridgeport Fittings ALI-50 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 ALI-50 come with a warranty?
Absolutely. The Bridgeport Fittings ALI-50 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 ALI-50?
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 ALI-50 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.
!