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Internet # 203626508

Model # MC4HD

Store SKU # 598764

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4 in. Galvanized Steel Worm Gear Clamp

$3.67
  • Made from durable galvanized steel for long-lasting use
  • Attaches ducts to aluminum products such as elbows and piping
  • Great for use with semi-rigid or rigid aluminum ducts
  • View More Details

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Product Details

About This Product

This 4 in. galvanized steel work gear clamp can be used to attach ducts to other aluminum products such as elbows and pipe. It is ideal for use with semi-rigid or rigid aluminum ducts. Product weight is 0.1 lb.

Highlights

  • Made of heavy duty galvanized steel
  • Easily adjustable using a hex or flat head screwdriver
  • Can be adjusted from 3.75 in to 4.5 in
  • Can be used in all venting applications
  • How to Clean a Dryer Duct
  • Return Policy

Product Information

Internet # 203626508

Model # MC4HD

Store SKU # 598764

Additional Resources

Shop All Everbilt

Specifications

Dimensions: H .25 in, W 4 in, L 0.25 in

Dimensions

Maximum compatible pipe size (in.)

4

Product Height (in.)

.25 in

Product Length (in.)

0.25 in

Product Width (in.)

4 in

Details

Construction

One piece

Material

Galvanized Steel

Minimum compatible pipe size (in.)

3

Pack Size

20

Product Weight (lb.)

.09 lb

Returnable

90-Day

Warranty / Certifications

Manufacturer Warranty

Warranty against MfG Defects

Questions & Answers

Are these water-resistant? Can I use these on the end of my irrigation hosing?
ByMar 24, 2025
1 Answer | 
Answer This Question

It will rust eventually if that is what you are referring to. It might be better to use an adjustable clamp. https://www.homedepot.com/p/Everbilt-3-in-to-4-in-Adjustable-Plastic-Cable-Tie-Clamps-2-Pack-2C234HD/203626464

By|Apr 1, 2026

    (1)

    Why is this clamp so much more expensive than any place else? I sincerely want to know if I should consider a clamp that costs 10x the clamps I could find elsewhere. There must be something special about it. What is it?
    ByNov 28, 2024
    1 Answer | 
    Answer This Question

    Thanks for your question. Our clamps are quite competitively priced based on the market. However, we cannot speak to the pricing of competitors' products.

    By|Nov 29, 2024


      Will this also fit 3inch pipe looks like I can just tighten clamp to fit
      ByOct 25, 2024
      1 Answer | 
      Answer This Question

      Thanks for your question about our product. Yes. This is clamp can be tightened down to fit 3".

      By|Mar 27, 2026

        (1)

        W Hat is the largest such a Trap you sell
        ByDec 13, 2022
        1 Answer | 
        Answer This Question

        We offer a 6" clamp that extends to beyond 7" in diameter

        By|Feb 22, 2023

          (1)

          I have a 1 3/4 in.diameter fence tube, can this 4 in. Galvanized Steel Worm Gear Clamp fit snugly around this 1 3/4 in diameter fence tubing.
          ByAug 27, 2022
          1 Answer | 
          Answer This Question

          No this clamp will only reduce to a minimum of just over 3" and will not hold the 1 3/4" tube

          By|Apr 7, 2026

            (2)

            Can this be used on something hot, such as an exhaust pipe?
            ByJul 29, 2022
            2 Answers | 
            Answer This Question

            These are galvanized steel but we would suggest using stainless steel for your outdoor automotive purpose

            By|Feb 22, 2023

              (1)

              I would not use this on something very hot. It may hold for a short while but not made for ehaust pipes

              By|Feb 22, 2023

                (1)

                What size is it for? Fix the specifications! Size says "minimum 3 inches". Description: "Can be adjusted from 3-9/18 in. to 4-1/2 in". Is 9/18 = 1/2? Vent is not that thick.
                ByDec 2, 2021
                1 Answer | 
                Answer This Question

                The dimension specifies the diameter the round clamp can be adjusted to. Etched onto the clamp is 70mm - 114mm which converts to 2 3/4" - 4.5" (approx) this clamps can be adjusted to. Therefore, it should fit around a 3" or 4" duct.

                By|Mar 2, 2024

                  (5)

                  Can this galvanized clamp really be used with an aluminum duct? Will the galvanized finish corrode the aluminum if used for a bathroom exhaust fan duct?
                  ByOct 5, 2021
                  3 Answers | 
                  Answer This Question

                  I don't think so. After a year there is no sign of corrosion of any kind. Maybe a problem in a Turkish Bath but I doubt it!

                  By|Sep 30, 2024

                    (3)

                    It should be okay to use it. If you are worried try put a large, wide rubber band underneath. Good luck.

                    By|Sep 30, 2024

                      (4)

                      I've used this on both bathroom and dryer aluminum duct with no issues.No signs of any rust/corrosion.

                      By|Aug 30, 2026

                        (4)

                        Viewing 1-8 of 15

                        Customer Reviews

                        4.6 out of 5

                        • 4.6 out of 1,046 reviews
                        • 89% recommend this product
                        Filter by:
                        Showing 1-10 of 1,046 reviews
                        A basic worm clamp, simple, common, and easy to take for granted, until you suddenly need one and don’t have it. I needed a 4 inch worm clamp for an unexpected plumbing job and counted on Home Depot to have exactly what I needed in stock. Easy in, easy out, and the leak is fixed.
                        by
                        Screw mechanism broke before it was tight on the dryer outlet.
                        Really cheap clamp. Screw mechanism before I could get it tight on the dryer outlet. Pretty disappointing.
                        by
                          It's simple design and can be very easy to use and tighten the screw. It provides a strong, secure hold without slipping and resists rust well. No complaints.
                          by
                          Used these to hold some of the dryer ducts and the AC ducts to the wall vents. So far they seem to be working well. No rust no problems.
                          by
                          • Verified Purchase
                          Wrong description
                          Description and picture states item is .25" or 1/4" and it is .50" or 1/2". You need to change description.
                          by
                            all bent
                            I received this all bent ok i need a replacement ok why so many words
                            by
                              • Recommended
                              Band width is 0.5in, not 0.25in as described
                              Unfortunately, the dimensions are not as described. I designed a part around the dimensions given on the site assuming the'd be correct prior to going out and buying the clamp. I had to redesign and fabricate the part again which wasted time and money.
                              by
                                • Recommended
                                3 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
                                This customer chose to rate the product and not provide text.
                                by
                                • Verified Purchase
                                Showing 1-10 of 1,046 reviews

                                Compare Key Features

                                current item

                                Product Snapshot

                                Ideal for all venting applications, this galvanized steel worm gear clamp ensures secure duct attachment. Easy adjustability from 3.75 in. to 4.5 in.
                                Ideal for flexible ducts, these adjustable and reusable plastic clamps fit 3 in. and 4 in. ducts, ensuring secure connections.
                                Ideal for securing ducts, pipes, or hoses with easy adjustments and durable chrome-plated construction.
                                Ideal for securing ducts, pipes, or hoses with easy adjustments and durable chrome-plated construction.

                                Size/Capacity

                                4 in. Dia, adjusts from 3.75 in. to 4.5 in.
                                3 in. to 4 in.
                                3 in. to 4 in.
                                6 in. to 7 in.

                                Pressure Rating

                                Temperature Rating

                                Corrosion Resistance

                                Leak Prevention