3/8"-16 x 1-3/4" Hex Coupling Nut - Hot-Dip Galvanized Steel

Marsoni

M251S

$29.85

Get it in 3 business days with 1 day shipping. Friday, May 29

3/8"-16 x 1-3/4" Hex Coupling Nut - Hot-Dip Galvanized SteelProduct Details : 3 8" 16 x 1 3 4" Hex Coupling Nut Hot Dip Galvanized Steel Product Type: Hex Coupling Nut Thread Size: 3 8" 16 Bolt Diameter Size: 3 8" Thread Count (Pitch TPI): 16 Length: 1 3 4" Tool to use: 9 16" Thread Type: Coarse Imperial Material(s): Hot Dip Galvanized Steel Standards and Certifications: Unified Standard Class 2B For any information about products, please contact us. *Photos for reference purposes only.

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I use this on many builds to dampen the metal echo in cars, vans, and trucks. Just one sheet in the center of a body panel is a huge difference maker. You can also cover the entire surface and get added insulation value. The noise is greatly depleted and it's easy to install with a roller tool. Looks Great when done. Good Product I will use again!

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Reviewed in the United States on December 29, 2025

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chris cook

New York, US

★★★★★ 5

Great, affordable upgrade

Style: 36 Sqft 80 mil

Easy to use and install. Great upgrade

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Reviewed in the United States on May 8, 2026

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Sbushlnzl

Lake Worth, US

★★★★★ 5

Nice sound deadening, self adhesive mats

Style: 18 Sqft 80 mil

These mats should work fine for my application. I’m applying it to the back sides of the hollow core doors on the closet where my HVAC is installed to reduce the “hum” from passing through. If I were sound deadening my automobile, I would probably use a heavier gage material. Overall, good product at a reasonable price.

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Reviewed in the United States on March 21, 2026

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vivian johnson

Belleville, US

★★★★★ 5

Very good product

Style: 36 Sqft 80 mil

Easy to install, very sticky. Will buy again.

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Reviewed in the United States on May 20, 2026