3/4" CONDUIT LOCKNUT

Product Description (ARL-402)

• Type: Threaded conduit locknut
• Trade Size: 3/4 inch
• Material: Steel
• Finish: Zinc plated (corrosion-resistant)
• Function: Locks conduit fittings into knockout openings in boxes/panels
• Use With: Rigid conduit and IMC conduit systems
• Listing: UL/CSA compliant

Common Uses

• Securing rigid or IMC conduit to electrical enclosures
• Holding fittings tight in junction boxes, panels, and cabinets
• Maintaining a stable mechanical and grounding connection in conduit runs
• Residential, commercial, and industrial wiring systems

Key Idea

The ARL-402 is a simple but essential locking hardware piece—it doesn’t connect wires or provide insulation. Instead, it ensures conduit fittings stay tight, aligned, and electrically continuous in the enclosure.

Context in Arlington lineup

• Part of Arlington’s 400-series rigid/IMC hardware family
• Typically used alongside bushings, nipples, and grounding fittings in the same system