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Polished 316 stainless steel IMC locknut, 4 inch trade size, 5 1/4 inch overall length, 4.41 inch inside diameter

CALBRITE

CALBRITE 4 in IMC Locknut 316 Stainless Steel Polished

SKU CH-PZNY-P56EY

Threaded locknut secures 4 in RMC or IMC conduit in 316 stainless steel with a polished finish

  • Product typeCable Management & Conduit
  • 316 stainless steel resists corrosion in harsh environments
  • Polished finish provides smooth surface for easier installation
  • UL514B listed and File #E308159 certified for code compliance
  • Fits 4 in trade size RMC and IMC conduit systems
  • Weighs 0.25 lb for lightweight handling

Four-Inch IMC Locknut

The CALBRITE 4 in IMC Locknut is a 316 stainless steel fitting for threaded rigid metal and intermediate metal conduit. It provides a secure mechanical connection in electrical raceway systems. The polished finish resists corrosion in harsh environments. Electrical contractors and maintenance teams use it to join conduit runs in industrial and commercial installations.

Trade Size 4 Inches

The locknut fits conduit with a 4 in trade size and has an inside diameter of 4.41 in. Overall length is 5 1/4 in, giving enough thread engagement for a tight joint. It is listed to UL 514B under file E308159. The fitting is not suitable for non-metallic conduit or unthreaded pipe.

Polished 316 Stainless Steel

The 316 alloy withstands chemical exposure and moisture better than standard steel. Polished surfaces shed contaminants and simplify cleaning in wash-down areas. Weight is 0.25 lb, so handling and threading require minimal effort. No moving parts or powered components mean silent operation and no electrical draw.

How it compares

Measured against everything we stock in Electrical Enclosures & Cabinets, at today’s prices. Recalculated every night.

Price $57.99
Pricier than about 61% of the 1,411 comparable items (median $39.99).

Specifications

Product
Brand nameCALBRITE
Product typeCable Management & Conduit

Questions about this item

Will the 4.41 in inside diameter match my existing 4 in threaded RMC or IMC conduit?

Yes, the locknut is designed for 4 in trade size threaded RMC and IMC conduit with a 4.41 in inside diameter.

How can I confirm the locknut meets code after installation?

The locknut carries UL514B certification under file E308159, confirming compliance for threaded metallic conduit.

Does the package include the conduit or any additional fittings?

The locknut is sold as a single 316 stainless steel polished piece; conduit and other fittings must be purchased separately.

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