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    7 Products

    Coupling Nuts

    Also known as extension nuts, these are commonly used to connect lengths of threaded rod and join threaded parts.
    Low-Strength Steel
    Image of Product. Front orientation. Coupling Nuts. Coupling Nuts.
    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.
    Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
    Hot-Dipped Galvanized Steel—Combines the strength of steel with the rust resistance of stainless steel. These nuts are an economical alternative to 18-8 stainless steel in wet and outdoor environments, but they won't hold up to salt water and chemicals. Use with other hot-dipped galvanized fasteners to ensure the threads mate tightly.
    Each
    Thread
    Size
    Lg.
    Wd.
    Threading
    Min. Thread
    Lg.
    Certificate Type
    1-9
    10-49
    50-Up
    Zinc-Plated Steel
    1 1/8"-7
    		3"1 1/2"Fully Threaded—Material Certificate
    		90264A119000000000000000000
    1 1/8"-7
    		7 1/2"1 3/4"Partially Threaded3 5/8"—90264A701000000000000000
     
    Hot-Dipped Galvanized Steel
    1 1/8"-7
    		3"1 1/2"Fully Threaded——93350A147000000000000000
     
    Medium-Strength Steel
    Image of Product. Front orientation. Coupling Nuts. Coupling Nuts.
    These Grade 5 or Class 8 nuts are about twice as strong as low-strength steel coupling nuts. Use them with threaded rods that have a comparable strength rating to avoid stripping threads during installation.
    Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.
    Each
    Thread
    Size
    Lg.
    Wd.
    Fastener Strength
    Grade/Class
    Threading
    1-9
    10-49
    50-Up
    Zinc-Plated Steel
    1 1/8"-7
    		3"1 1/2"SAE Grade 5
    		Fully Threaded90977A235000000000000000000
     
    Corrosion-Resistant Stainless Steel
    Image of Product. Front orientation. Coupling Nuts. Coupling Nuts.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these nuts resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Highly Corrosion-Resistant 316 Stainless Steel—The most corrosion-resistant stainless steel coupling nuts we offer, these hold up in just about any environment. They won't degrade from exposure to weather, salt water, and most chemicals.
    Each
    Thread
    Size
    Lg.
    Wd.
    Threading
    1-9
    10-49
    50-Up
    18-8 Stainless Steel
    1 1/8"-7
    		3"1 1/2"Fully Threaded90268A511000000000000000000
     
    Highly Corrosion-Resistant 316 Stainless Steel
    1 1/8"-7
    		3"1 1/2"Fully Threaded90104A04500000000000000000
     

    Left-Hand to Right-Hand Female Hex Thread Adapters

    Image of Product. Front orientation. Contains Annotated. Thread Adapters. Left-Hand to Right-Hand Female Hex Thread Adapters.
    Image of Attribute. Front orientation. Contains Annotated. Thread Adapters. Left-Hand to Right-Hand Female Hex Thread Adapters.
    Often called sleeve nuts, these thread adapters fasten parts with right-hand threads to parts with left-hand threads.
    Zinc-Plated Steel—Zinc-plated steel adapters are strong and corrosion resistant.
    Thread
    Lg.
    Thread
    Fit
    Hex
    Each
    Thread Size
    (A)
    Thread Size
    (B)
    (A)
    (B)
    (A)
    (B)
    Size
    Length
    Hardness
    1-9
    10-Up
    Zinc-Plated Steel
    1 1/8"-7
    		1 1/8"-7
    		3 1/2"3 1/2"Unified Standard Class 2B
    		Unified Standard Class 2B
    		1 3/4"7 1/2"Rockwell B6594280A101000000000000
     
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