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    9 Products

    Coupling Nuts

    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.
    Extreme-Strength Steel
    Made from Grade 2H steel, these are about 20% stronger than high-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.
    Fastener Strength
    Grade/Class
    Threading
    1-9
    10-49
    50-Up
    Steel
    1/4"-20
    		7/8"1/2"ASTM Grade 2H
    		Fully Threaded000000000000000000000000000
    3/8"-16
    		1 3/4"11/16"ASTM Grade 2H
    		Fully Threaded000000000000000000000000
    1/2"-13
    		1 3/4"7/8"ASTM Grade 2H
    		Fully Threaded000000000000000000000000
    5/8"-11
    		2 1/8"1 1/16"ASTM Grade 2H
    		Fully Threaded000000000000000000000000
    3/4"-10
    		2 1/4"1 1/4"ASTM Grade 2H
    		Fully Threaded000000000000000000000000
    7/8"-9
    		2 1/2"1 1/2"ASTM Grade 2H
    		Fully Threaded000000000000000000000000
    1"-8
    		2 3/4"1 5/8"ASTM Grade 2H
    		Fully Threaded000000000000000000000000
    1 1/4"-7
    		3"2"ASTM Grade 2H
    		Fully Threaded000000000000000000000000
    1 1/2"-6
    		3 1/2"2 1/2"ASTM Grade 2H
    		Fully Threaded000000000000000000000000
     
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