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Gray malleable iron 1-gang electrical box with tapered threads

Hubbell Incorporated

Hubbell Incorporated FS-3M 1-Gang Device Box 32.0 cu in

SKU CH-0496-1FNTE

A single-gang malleable iron device box with 32.0 cu in capacity, 1 in hub, internal grounding screw and tapered threads

  • TypeElectrical Boxes
  • 1-gang box with 32.0 cu in capacity for ample wiring space
  • Malleable iron construction provides durable protection in harsh environments
  • Gray finish resists corrosion for long-lasting outdoor use
  • Tapered threads ensure secure conduit connections
  • Internal grounding screw simplifies safe installation

Single-Gang FS Box for Conduit Runs

The Hubbell Killark FS-3M is a one-gang malleable iron device box rated at 32.0 cu in capacity. It accepts a single 1 in conduit entry and includes an internal grounding screw for secure bonding. The gray finish suits industrial and commercial installations.

Suits Rigid Conduit Systems Not Cable Tray

This box suits electricians pulling rigid or IMC conduit into a single device location where tapered threads are required. It is not for installers needing multiple gangs, larger cubic-inch capacity, or non-metallic cable clamps. Builders using EMT without threaded hubs should look at other styles.

Threaded Hub Mounting With Fixed Depth

Installation means threading the 1 in conduit directly into the tapered hub and securing the box via 1.0 in on-centre mounting holes. The 2.0 in depth and 4.62 in by 2.87 in footprint are fixed, so verify enclosure space before rough-in. Malleable iron resists impact but requires proper thread engagement to maintain ground continuity.

Highlights

  • 1-gang box with 32.0 cu in capacity for ample wiring space
  • Malleable iron construction provides durable protection in harsh environments
  • Gray finish resists corrosion for long-lasting outdoor use
  • Tapered threads ensure secure conduit connections
  • Internal grounding screw simplifies safe installation

Specifications

BrandHUBBELL KILLARK
TypeElectrical Boxes

Questions about this item

Does this 1-gang box need a specific cover or mounting hardware to work?

It has 1.0 in on-centre mounting holes and tapered 1 in hub threads, so a matching FS-series cover and conduit fittings will secure it.

Can I run existing 1-inch rigid conduit into the 1 in hub on this gray malleable-iron box?

Yes, the 1 in tapered threads accept standard 1-inch conduit, and the 32.0 cu in capacity leaves room for the wires you pull through.

How do I confirm the internal grounding screw is properly connected after installation?

After wiring, verify continuity between the grounding screw and the metal conduit system with a tester; the malleable-iron body provides the ground path.

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