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    1 Product

    Coupling Nuts
    3D CAD models available

    Image of Product. Front orientation. Coupling Nuts. Coupling Nuts.
    Also known as extension nuts, these are commonly used to connect lengths of threaded rod and join threaded parts.
    Low-Strength Steel
    Rated Grade 2 or lower, these are about half as strong as medium-strength steel coupling nuts. Use them with threaded rods that have a comparable strength rating to avoid stripping threads during installation.
    Steel—Best for dry environments since moisture will cause these nuts to rust.
    Each
    Thread
    Size
    Lg.
    Wd.
    Threading
    Min. Thread
    Lg.
    1-9
    10-Up
    Steel
    1 3/8"-6
    8"2 1/4"Partially Threaded3 7/8"000000000000000000000
    Extra-Long Steel Coupling Nut 1-3/8"-6
    EachDelivers Tuesday
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