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Hexagonal steel coupling nut with zinc plated finish

MIDWEST FASTENER CORP

MIDWEST FASTENER CORP 3493 Coupling Nut 3/8"-16 Steel Zinc Plated

SKU CH-FA4H-44X83

A 3/8"-16 steel coupling nut with zinc plating joins two threaded rods end to end

  • Product typeNuts
  • Connects two threaded rods end to end
  • 3/8"-16 thread fits standard rods
  • Steel construction provides structural strength
  • Zinc plating resists corrosion in damp conditions
  • 1-3/4 in length spans the joint gap

Coupling Nut for Threaded Rods

This MIDWEST FASTENER coupling nut joins two threaded rods end to end using internal threads that meet in the middle. It suits maintenance, fabrication and repair tasks where extending rod length is required. The steel body provides structural strength for mechanical assemblies.

Thread Standard and Corrosion Protection

The nut uses a 3/8"-16 thread pattern compatible with matching rods and fasteners. Zinc plating adds a sacrificial layer that resists surface corrosion in typical indoor and covered outdoor environments. It is not rated for continuous immersion or highly acidic conditions.

Overall Length Determines Fit

The 1-3/4 in overall length sets the maximum engagement depth for each rod end. Builders needing a shorter or longer spacer must select a different coupling nut, as this dimension cannot be altered after purchase.

How it compares

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Price $17.99
Typical for this category: the median of 2,607 items is $18.99.

Specifications

Product
Brand nameMIDWEST FASTENER
Product typeNuts

Questions about this item

Should I choose the 3/8"-16 size or a different thread?

The 3/8"-16 coupling nut matches rods with that exact thread pitch; verify your rod specification before ordering.

What does the 1-3/4 in length mean once installed?

That length gives the engagement depth when two threaded rods meet in the centre of the nut.

How does the zinc-plated steel finish hold up?

Zinc plating on steel resists corrosion in typical indoor and sheltered outdoor environments.

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