Arlington Industries 8400ST SN...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$116.91
Arlington Industries 8400ST SNAP-TITE® 3/8" Combination FMC/AC Connector, Pack of 100

Arlington Industries 8400ST SNAP-TITE® 3/8" Combination FMC/AC Connector, Pack of 100

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Model: 8400ST

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

$116.91
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Arlington Industries 8400ST SNAP-TITE® 3/8" Combination FMC/AC Connector

Arlington Industries engineered this SNAP-TITE® 3/8" Combination Connector to give electricians a single, dependable fitting for joining both flexible metal conduit (FMC) and armored cable (AC/BX) to boxes, panels, and enclosures. Rather than stocking separate connectors for FMC and BX runs, contractors can rely on this 3/8" combination-style connector to handle either cable type through the same knockout. The SNAP-TITE® mechanism snaps the connector securely into place without set screws, cutting down on installation steps and speeding up rough-in work on residential and commercial jobs alike. Built by Arlington Industries for professional electrical installations, this connector helps keep panels, junction boxes, and enclosures organized and code-ready.

Key Features

  • Trade Size: 3/8" connector sized for standard combination FMC/AC wiring applications.
  • Combination FMC/AC Design: Accepts both flexible metal conduit (FMC/Greenfield) and armored cable (AC/BX) in a single connector body, eliminating the need for separate fittings.
  • SNAP-TITE® Quick-Connect: Tool-free, screw-less snap installation reduces labor time and simplifies rough-in compared to traditional set-screw connectors.
  • Secure Cable Retention: Positive snap engagement holds FMC or AC firmly within the box, panel, or enclosure knockout for a dependable connection.
  • Simplified Job-Site Inventory: One combination connector style covers two common cable types, reducing the number of SKUs electricians need to carry on the truck.
  • Compact Connector Profile: Designed to fit standard box and enclosure knockouts for straightforward, space-conscious installation.

Technical Specifications

  • Refer to manufacturer documentation for complete specifications.

Typical Applications

  • Connecting Flexible Metal Conduit (FMC) to Boxes and Enclosures
  • Connecting Armored Cable (AC/BX) to Panels and Junction Boxes
  • Residential Electrical Wiring Installations
  • Commercial Electrical Wiring Installations
  • Renovation and Retrofit Electrical Work
  • New Construction Rough-In Wiring

Why Arlington Industries?

Arlington Industries built the SNAP-TITE® connector line to solve a common jobsite headache: carrying separate connectors for flexible metal conduit and armored cable. With this connector, a single 3/8" combination fitting handles both cable types, snapping securely into place without set screws for a faster, more consistent installation. That combination of flexibility and tool-free assembly is what electricians look for when choosing dependable, code-focused wiring connections for panels, boxes, and enclosures. Arlington Industries' SNAP-TITE® design keeps installation simple while helping ensure a secure, lasting connection on every run.

Manufacturer Resources

Product Specs

list_batch:
ARL-20260918
Product Type:
AC/MC/Flex Connector
Configuration:
Combination FMC/AC
Connection Type:
Snap-In
Department:
Electrical
Product Group:
Conduit & Raceway
Product Subgroup:
Flexible Conduit & Fittings
Product Size:
3/8"
Pack size (unit):
100
Listing:
UL, CSA
Product Width:
0.876 in
Product Height:
0.88 in
Product Color:
Silver
Country Of Origin:
United States

Arlington Industries 8400ST – Frequently Asked Questions

1) Will the Arlington 8400ST connector work with both flexible metal conduit and armored cable, or do I need separate fittings?
One fitting covers both. The 8400ST is a combination FMC/AC connector, so it accepts flexible metal conduit (Greenfield) and armored cable (AC/BX) in the same connector body. That means you stock one 3/8 inch fitting on the truck instead of a separate FMC connector and a separate BX connector.
2) Does the 8400ST need a set screw or a locknut to hold it in the box?
No set screw. The SNAP-TITE mechanism is a snap-in connection: the connector snaps into the knockout and holds itself, so there is nothing to tighten with a screwdriver. That cuts a step out of every termination during rough-in.
3) What size knockout does a 3/8 inch SNAP-TITE combination connector go into?
The 8400ST is a 3/8 inch trade size fitting and is built for standard box and enclosure knockouts. In the trade, 3/8 inch FMC/AC connectors land in the standard 1/2 inch knockout found on switch boxes, junction boxes and panels, which is why the same fitting works across boxes, panels and enclosures on the same job.
4) How many connectors come in a box of Arlington 8400ST?
They ship 100 to the pack, which is the count a contractor or MRO buyer wants for panel work or a full rough-in rather than a handful of loose fittings.
5) Is the 8400ST the right part number for 3/8 inch FMC and BX, and what is the manufacturer number?
Arlington Industries part number 8400ST is the 3/8 inch SNAP-TITE combination FMC/AC connector. Order by 8400ST and you get the snap-in combination fitting; that same number is what an electrical distributor cross-references for the 3/8 inch combo connector.
6) Can I use a snap-in connector like this on a retrofit where I am adding whips to an existing panel?
Yes, that is one of its normal uses. The connector is listed for renovation and retrofit work as well as new construction rough-in, and because it snaps in without a set screw you can terminate in a tight, already-crowded panel or junction box without reaching behind the fitting with a driver.
How fast can I get the Arlington Industries 8400ST 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 Arlington Industries 8400ST come with a warranty?
Absolutely. The Arlington Industries 8400ST 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 Arlington Industries 8400ST?
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 Arlington Industries 8400ST from ZenSupply?
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