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Small hexagonal steel locknut with zinc plating, 3/8 inch thread

L.H. DOTTIE

L.H. DOTTIE LN38 Conduit Locknut 3/8 in Steel Zinc Plated

SKU CH-F3VM-N93XM

A 3/8 in steel locknut with zinc plating secures threaded conduit fittings

  • Product typeCable Management & Conduit
  • 3/8 inch threaded locknut secures conduit fittings firmly
  • Steel construction with zinc plating resists corrosion in damp environments
  • DOTTIE brand conduit accessory fits standard 3/8 inch trade-size conduit
  • Simple threaded design enables quick installation without special tools
  • Suitable for electrical cable management in automotive and industrial applications

3/8-inch Conduit Locknut

The L.H. DOTTIE LN38 is a 3/8 in steel locknut with a zinc-plated finish. It secures threaded conduit fittings in electrical installations. Electricians and maintenance technicians use it to prevent fittings from loosening under vibration. The component suits indoor and protected outdoor runs where corrosion resistance matters.

Replaces worn or missing locknuts

Swap this in when an original nut strips, corrodes or is lost during a retrofit. The jump is worth it if the existing hardware no longer holds the fitting tight or shows zinc degradation. It is not for buyers who need a larger trade size or a non-threaded coupling method.

Simple threaded installation

Spin the nut onto the fitting threads by hand then tighten with a wrench until snug. Over-tightening can damage the conduit threads or crack the fitting body. Ensure the conduit is cut square and deburred before assembly to avoid cross-threading.

How it compares

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

Price $25.99
Typical for this category: the median of 1,290 items is $28.99.

Specifications

Product
Brand nameDOTTIE
Product typeCable Management & Conduit

Questions about this item

What size knockout does the 3/8 in locknut fit?

The 3/8 in locknut is designed for a standard 3/8 in trade-size knockout in a box or enclosure.

How do I install the locknut without stripping the threads?

Thread the locknut onto the conduit fitting by hand until snug, then tighten with a wrench; over-torquing with a pipe wrench can damage the zinc plating and strip the threads.

Will the zinc plating hold up in damp locations, or must I replace it with stainless?

Zinc plating resists corrosion in typical indoor and sheltered outdoor locations; in constantly wet or chemically harsh areas, a stainless-steel locknut is the longer-lasting choice.

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