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Small zinc-plated steel coupling nuts in a bulk pack

L.H. DOTTIE

L.H. DOTTIE RRC21 Coupling Nut 3/8-1/4 Steel Zinc 1in 50pk

SKU CH-BA32-ADGE1

Steel zinc-plated coupling nuts join 3/8 and 1/4 threads, one inch long, in a 50-piece pack

  • Product typeNuts
  • Reduces mixed-thread connections with 3/8 to 1/4 coupling
  • 50-piece pack covers large jobs in one box
  • Zinc-plated steel resists corrosion on site
  • One-inch length fits standard hardware assemblies
  • New DOTTIE hardware arrives ready for installation

What this coupling nut connects

The DOTTIE RRC21 is a steel, zinc-plated coupling nut with 3/8 inch to 1/4 inch threads and a 1 inch length. It joins threaded rod or studs of different diameters in mechanical and automotive assemblies. Supplied in a 50-piece pack for volume use.

Check your thread and length requirements

Verify that the mating parts use 3/8 inch and 1/4 inch thread pitches compatible with this nut. Confirm the 1 inch overall length provides sufficient engagement for your joint. The zinc plating offers corrosion resistance for general environments.

Fits between mixed-diameter fasteners

This nut bridges 3/8 inch and 1/4 inch threaded components, reducing the need for separate adapters. The 50-count pack keeps inventory stocked for repetitive assembly tasks. No additional hardware is included.

How it compares

Measured against everything we stock in General Hardware & Accessories, at today’s prices. Recalculated every night.

Price $53.99
Pricier than about 75% of the 2,607 comparable items (median $18.99).

Specifications

Product
Brand nameDOTTIE
Product typeNuts

Questions about this item

What comes in the package and is anything else required for installation?

The package contains fifty coupling nuts with 3/8 to 1/4 inch threads, steel construction, zinc plating and one inch length. No additional parts are included; matching threaded rod or bolts must be sourced separately.

How do I decide between the available versions or capacities of this coupling nut?

This listing offers a single specification: 3/8 to 1/4 inch thread reduction, one inch length, steel zinc plated, sold in a fifty pack. No alternative sizes, materials or pack quantities are shown.

What does the 3/8 to 1/4 inch thread reduction mean when the nut is used in a real assembly?

It joins a 3/8 inch threaded rod or stud to a 1/4 inch counterpart, allowing two different thread sizes to connect in a straight line. The one inch length provides the engagement depth for both sides.

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