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Internet # 204337391

Model # 822281

Store SKU # 1000016180

3/8 in.-16 TPI Zinc Rod Coupling Nuts (2-Pack)

$2.47
  • Use with a threaded rod to hang items vertically or horizontally
  • Zinc-plated design for corrosion protection
  • 2-pieces per bag adds value to your project needs
  • View More Details

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Product Details

About This Product

The Zinc Rod Coupling Nuts from Everbilt are designed to join two pieces of threaded rod together from opposing ends for hanging various items either vertically or horizontally. They are internally threaded in extended lengths and are generally hand-tightened. Finished in a zinc-plated finish for corrosion protection. Available in a variety of lengths and diameters to suit your project needs.

Product Information

Internet # 204337391

Model # 822281

Store SKU # 1000016180

Additional Resources

Shop All Everbilt
From the Manufacturer

Specifications

Outside Diameter: 3/8 in

Dimensions

Outside Diameter

3/8 in

Details

Fastener Callout Size

3/8 in.-16

Fastener Material

Carbon Steel

Fastener Plating

Clear Zinc

Fastener Type

Coupling Nut

Finish Family

Metallic

Fits Bolt Size

3/8 inch

Grade

A307

Measurement System

Inches

Package Quantity

2

Returnable

90-Day

Thread Pitch (mm)

1.59 mm

Thread Style

Coarse Thread

Threads Per Inch (TPI)

16 TPI

Warranty / Certifications

Manufacturer Warranty

None

Questions & Answers

What is the length of the 5/8 connector nut
ByAug 6, 2026
0 Answer | 
Answer This Question

what is the length of the 3/8-16 coupling nut
ByJun 27, 2026
1 Answer | 
Answer This Question

1.11-1.13"

By|Jul 27, 2026

    (1)

    Outside diameter?
    ByMay 30, 2026
    1 Answer | 
    Answer This Question

    Hi Home Depot Customer, For the Everbilt 1/4 in.-20 TPI Zinc Rod Coupling Nuts, the outside dimensions are as follows: * **Outside width (across the corners):** 0.577 inch * **Width across the flats:** 1/2 inch The 1/4 inch specification refers to the inside diameter, which is the size of the bolt it fits.

    By|Jun 6, 2026


    Will they fit 8–32 screws?
    ByMay 7, 2026
    2 Answers | 
    Answer This Question

    No, these 3/8 in.-16 TPI rod coupling nuts will not fit 8–32 screws. The thread size, diameter and TPI are completely different, so they are not compatible.

    By|May 11, 2026

      Hi Home Depot Customer, No, the 3/8 in.-16 TPI Zinc Rod Coupling Nuts are designed for a 3/8 inch diameter threaded rod with 16 threads per inch. An 8-32 screw has a #8 diameter and 32 threads per inch, which is a different size and thread count, so it will not fit.

      By|May 8, 2026


      How long is the coupler?
      ByApr 27, 2026
      2 Answers | 
      Answer This Question

      Hi Home Depot Customer, The 3/4 in.-10 tpi Zinc Rod Coupling Nut has an overall length of 2.25 inches.

      By|Jun 6, 2026

      2-1/4"

      By|Jun 20, 2026

        (1)

        What is the outside dimensions on the 1/2 in.-13 tpi size nut?
        ByApr 14, 2026
        1 Answer | 
        Answer This Question

        width across Corner:0.839"-0.966"; width across flat: 0.736"-0.750"

        By|Apr 17, 2026


          what are the outside dimensions?
          ByNov 11, 2025
          1 Answer | 
          Answer This Question

          Dear Valued Home Depot Customer,We have reached out to the manufacturer and their answer is, Hi Home Depot Customer, For the Everbilt 1/4 in.-20 TPI Zinc Rod Coupling Nuts, the outside dimensions are as follows: * **Outside width (across the corners):** 0.577 inch * **Width across the flats:** 1/2 inch The ""1/4 inch"" specification refers to the inside diameter, which is the size of the bolt it fits.

          By|Dec 11, 2025


            What is the overall length of the 1/4 -20 coupling?
            ByMay 7, 2025
            1 Answer | 
            Answer This Question

            Dear Valued Home Depot Customer,We have reached out to the manufacturer and their answer is, The overall length of the 1/4 in.-20 TPI Zinc Rod Coupling Nuts is not explicitly provided in the product details. However, based on similar products and the provided information, it is likely between 0.75 inches and 1.75 inches. For a definitive answer, it's best to check with the manufacturer or a Home Depot associate.

            By|Mar 22, 2026

              (2)

              Viewing 1-8 of 40

              Customer Reviews

              4.7 out of 5

              • 4.7 out of 231 reviews
              • 90% recommend this product
              Filter by:
              Showing 1-10 of 231 reviews
              I used this as Mini Jack Spreader Tool
              These are great to keep around the shop. I was welding two pieces of angle iron and as I welded the dimensions changed. So I tried a porta power, but it did not apply enough pressure. I decided that I could use a coupling nut and a bolt (preferably grade 8) and it worked great. https://www.youtube.com/watch?v=UHu89m4rWVQ
              by
                • Recommended
                1 found this review helpful
                Fully threaded 1.75 inchs long and 9/16 wrench for coupling. I used these to lock down my porch railing 4x4 supports using 3/8 threaded rod. The 3/8 threaded rods are load rated 5400 Lbs and the 4x4s were center-drilled up 12 inches, and a 1 inch side access hole allowed me to install a washer and a 3/8 nut. The 5400 lb load rating would easily strip out the nut, so I welded the nut to the rod inside the hole. Then I installed a 3-greased washer "compression bearing" on the rod end under the deck and installed these 1.75 inch threaded couplers as my securing nuts. The 1.75 inches of thread will withstand well over double the 5400 lbs that the rod is rated for. Beautiful installation with the deck rails mounted OVER the Trex Deck.
                by
                • Verified Purchase
                I needed to make a threaded spacer so I ended up cutting it in two seems, well made would recomme...
                I needed to make a threaded spacer so I ended up cutting it in two seems, well made would recommend this if someone need to join to threaded rods together.
                by
                • Verified Purchase
                • Recommended
                1 found this review helpful
                Worked well for the application. Good price.
                Worked well for the application. Good price.
                by
                • Verified Purchase
                • Recommended
                Quality craftsmanship. Worked great in a wide variety of applications. These rod coupling nuts al...
                Quality craftsmanship. Worked great in a wide variety of applications. These rod coupling nuts also come in handy when mounting accessories as they have more room to get a wrench on.
                by
                  • Recommended
                  1 found this review helpful
                  This customer chose to rate the product and not provide text.
                  by
                  This customer chose to rate the product and not provide text.
                  by
                  • Verified Purchase
                  worked great just what I needed
                  by
                  Perfect fir, used it in conjunction with a 3/8” rod to fix a post cap on a head board.
                  by
                  • Verified Purchase
                  The coupling nuts worked as expected. They are for an outdoors application. Use them before, 6 years ago, and they are still performing as expected.
                  by
                  Showing 1-10 of 231 reviews

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                  Product Snapshot

                  Ideal for joining threaded rods, the Everbilt 3/8 in.-16 TPI Zinc Rod Coupling Nuts offer easy installation and corrosion protection.
                  Ideal for joining threaded rods, the #10-24 zinc-plated coupling nuts offer corrosion protection and secure connections.
                  Ideal for joining threaded rods, this zinc-plated steel coupling nut ensures secure and stable connections for various hanging applications.
                  Ideal for joining threaded rods, the Everbilt Zinc Rod Coupling Nut offers easy installation and corrosion resistance.

                  Thread Size Compatibility

                  3/8 in.-16 TPI
                  #10-24 tpi
                  1/2 in.-13 tpi
                  5/8 in.-11 tpi

                  Length

                  Material Type

                  Steel
                  Steel
                  Steel
                  Steel

                  Corrosion Resistance

                  Coating/Finish

                  Zinc-plated
                  Zinc-plated
                  Zinc-plated
                  Zinc-plated