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Polished 316 stainless steel conduit locknut, 2-1/2 inch trade size

CALBRITE

CALBRITE S62500LN00 2-1/2in 3-9/16inL 316 SS conduit locknut

SKU CH-56G3-266FV

316 stainless steel locknut secures 2-1/2 inch threaded RMC and IMC conduit, 3-9/16 inch overall length, UL514B listed

  • Product typeConduit & Raceways
  • 316 stainless steel resists corrosion in harsh environments
  • Polished finish simplifies installation and inspection
  • UL 514B listed for code-compliant conduit assemblies
  • Fits 2-1/2 in trade size RMC and IMC conduit
  • Inside diameter 2.76 in matches threaded conduit dimensions

2-1/2 in stainless steel locknut

The CALBRITE S62500LN00 is a 316 stainless steel conduit locknut designed for trade size 2-1/2 in threaded RMC and IMC. It provides a secure fastening point for metallic conduit runs in electrical installations. The polished finish resists corrosion in demanding environments. This component is UL listed under file E308159 to the UL514B standard.

Polished 316 SS construction

The locknut measures 3-9/16 in overall length with a 2.76 in inside diameter and weighs 0.16 lb. Its 316 stainless steel body withstands exposure to moisture and chemicals better than standard zinc-plated alternatives. The threaded design engages directly with compatible RMC or IMC conduit fittings. No additional hardware is required for standard mounting.

Replaces worn or undersized locknuts

Use this fitting when existing locknuts show corrosion damage or when upgrading to a larger 2-1/2 in conduit trade size. The jump is worth it for installations requiring the superior corrosion resistance of 316 stainless steel over plated steel. It is not suited for non-threaded conduit systems or smaller trade sizes.

How it compares

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

Price $41.99
Pricier than about 60% of the 1,290 comparable items (median $28.99).

Specifications

Product
Brand nameCALBRITE
Product typeConduit & Raceways

Questions about this item

What conduit standard does the 316 SS locknut meet?

The locknut is listed to UL514B and carries standards file E308159 for use with threaded metallic conduit.

What trade size and inside diameter must the conduit have to fit this locknut?

It fits 2-1/2 in trade size RMC or IMC with an inside diameter of 2.76 in.

How is the locknut installed on threaded RMC or IMC?

Thread the locknut onto the conduit until snug, then tighten with a wrench to secure the fitting; the step often missed is fully seating the threads before final torque.

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