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    Multiple styles of ASTM A563 Grade A Hex Coupling Nuts for general industrial, commercial and residential applications.

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    ASTM A563 Grade A Economy (Short) Coupling Nut, National Coarse

    ASTM A563 Grade A Hex Economy Coupling Nut, National Coarse Thread, Zinc Blue Plated Finish for affordable general industrial, commercial and residential applications.

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    ASTM A563 Grade A Economy (Short) Coupling Nut, National Fine

    ASTM A563 Grade A Hex Economy Coupling Nut, National Fine Thread, Zinc Blue Plated Finish for affordable general industrial, commercial and residential applications.

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    ASTM A563 Grade A Hex Regular Coupling Nut, National Coarse

    ASTM A563 Grade A Hex Regular Coupling Nut, National Coarse Thread, Plain, Zinc Blue Plated Finish and Hot Dipped Galvanized Finish for general industrial, commercial and residential applications.

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    ASTM A563 Grade A Hex Reducer Coupling Nut, National Coarse

    ASTM A563 Grade A Hex Reducer Coupling Nut, National Coarse Thread, Zinc Blue Plated Finish for connecting two diameters of bolt or rod in general industrial, commercial and residential applications.

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