McMaster-Carr logo
    Filter by
    System of Measurement
    Width
    Attribute Image
    Thread Spacing
    Industrial Info Snippet
    Nut Type
    Industrial Info Compare
    Thread Direction
    DFARS Specialty Metals
    Industrial Info Compare
    Thread Type
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Sold As
    Fastener Strength Rating
    Drive Style
    Industrial Info Snippet
    Coupling Nut Profile
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    23 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.
    Corrosion-Resistant Stainless Steel
    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.
    Each
    Thread
    Size
    Lg.
    Wd.
    Threading
    1-9
    10-49
    50-Up
    18-8 Stainless Steel
    3-48
    		5/16"1/4"Fully Threaded90268A204000000000000000
     
    Brass
    Brass—With a warm, polished look, these nuts are often chosen for their appearance. Similar to 18-8 stainless steel, brass is corrosion resistant enough to stand up to wet environments. It is also softer than other metals, so it's easier to thread together.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Each
    Thread
    Size
    Lg.
    Wd.
    Threading
    1-9
    10-49
    50-Up
    Brass
    3-48
    		5/16"1/4"Fully Threaded90465A312000000000000000
     

    Threaded Rods

    Image of Product. Front orientation. Threaded Rods. Threaded Rods.
    Anchor, connect, or hang components in a wide variety of applications, from mounting I-beams to suspending light fixtures.
    Low-Strength Steel
    With a tensile strength of 50,000 psi or 60,000 psi, these rods are often used to suspend light fixtures, cable trays, and conduit from ceilings. They're about half the strength of medium-strength steel rods. To avoid stripped threads during installation, make sure your nuts are also low-strength steel.
    Zinc-Plated Steel—The most common choice for areas with occasional exposure to moisture.
    Steel—Best for dry environments since moisture will cause these rods to rust.
    Lg.
    Tensile Strength,
    psi
    Hardness
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
     
    3-48
    2"50,000Rockwell B611095475A402000000
    1 ft.50,000Rockwell B61190034A4800000
    3 ft.50,000Rockwell B61190034A49000000
     
    Steel
     
    3-48
    1"50,000Rockwell B611091565A40100000
    1 ft.50,000Rockwell B61198790A4010000
    3 ft.50,000Rockwell B61198837A0040000
    6 ft.50,000Rockwell B61198910A56000000
     
    Stainless Steel
    More corrosion resistant than steel rods and comparable in strength to low-strength steel.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these rods resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these rods won't degrade when exposed to harsh weather, salt water, and most chemicals.
    Lg.
    Tensile Strength,
    psi
    Hardness
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
     
    3-48
    1"70,000Rockwell B70595412A303000000
    2"70,000Rockwell B701095412A30400000
    1 ft.70,000Rockwell B70195412A1390000
    2 ft.70,000Rockwell B70198804A0040000
    3 ft.70,000Rockwell B70198847A0040000
    6 ft.70,000Rockwell B70198920A00400000
     
    Highly Corrosion-Resistant 316 Stainless Steel
     
    3-48
    2"70,000Rockwell B701090575A13200000
    1 ft.70,000Rockwell B70193250A2110000
    3 ft.70,000Rockwell B70193250A21200000
    6 ft.70,000Rockwell B70193250A21300000
     
    Aluminum
    6061 Aluminum—One-third the weight of steel, these rods are commonly used in automation and other applications with weight limits. They're an alternative to stainless steel for rust resistance but are not as strong.
    Lg.,
    ft.
    Tensile Strength,
    psi
    Hardness
    Pkg.
    Qty.
    Pkg.
    6061 Aluminum
     
    3-48
    340,000Rockwell B40194435A503000000
    640,000Rockwell B40194435A50400000
     
    Brass
    Brass—Conductive and nonmagnetic, brass rods are commonly used to secure electrical equipment, such as circuit board assemblies and mounting brackets, inside enclosures.
    Lg.,
    ft.
    Tensile Strength,
    psi
    Hardness
    Pkg.
    Qty.
    Pkg.
    Brass
     
    3-48
    350,000Rockwell B55198853A401000000
    650,000Rockwell B55198853A40200000
     
    back to top