McMaster-Carr logo
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    27 Products

    Threaded Rods
    3D CAD models available

    Anchor, connect, or hang components in a wide variety of applications, from mounting I-beams to suspending light fixtures.
    High-Strength Steel
    Image of Product. Front orientation. Threaded Rods. Threaded Rods.
    With a tensile strength of 150,000 psi, these rods are strong enough to stabilize steel frameworks and structural supports, such as I-beams. They are about 25% stronger than medium-strength steel rods. To avoid stripped threads during installation, make sure your nuts are also high-strength steel.
    Steel—Best for dry environments since moisture will cause these rods to rust.
    Lg.,
    m
    Tensile Strength,
    psi
    Fastener Strength
    Grade/Class
    Hardness
    Specs.
    Met
    Each
    Steel
     
    M27 × 3 mm
    1150,000ISO Class 10.9
    Rockwell C32DIN 97600000000000000
    2150,000ISO Class 10.9
    Rockwell C32DIN 9760000000000000
     
    Medium-Strength Steel
    Image of Product. Front orientation. Threaded Rods. Threaded Rods.
    With tensile strengths from 110,000 psi to 125,000 psi, these rods are strong enough for most industrial applications, such as anchoring machinery and connecting pipe flanges. They are about twice as strong as low-strength steel rods. To avoid stripped threads during installation, make sure your nuts are also medium-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
    Fastener Strength
    Grade/Class
    Hardness
    Specs. Met
    Each
    Zinc-Plated Steel
     
    M27 × 3 mm
    1 m110,000ISO Class 8.8
    Rockwell C20DIN 9750000000000000000
     
    Steel
     
    M27 × 2 mm
    300 mm125,000ASTM Grade B7
    Rockwell C35ASTM A193, DIN 97500000000000000
    1 m125,000ASTM Grade B7
    Rockwell C35ASTM A193, DIN 975000000000000000
     
    M27 × 3 mm
    300 mm125,000ASTM Grade B7
    Rockwell C35ASTM A193, DIN 97600000000000000
    1 m125,000ASTM Grade B7
    Rockwell C35ASTM A193, DIN 976000000000000000
    1 m110,000ISO Class 8.8
    Rockwell C20DIN 975000000000000000
    2 m125,000ASTM Grade B7
    Rockwell C35ASTM A193, DIN 976000000000000000
     
    Low-Strength Steel
    Image of Product. Front orientation. Threaded Rods. Threaded Rods.
    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
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
     
    M27 × 3 mm
    300 mm50,000Rockwell B49DIN 97610000000000000000
    1 m50,000Rockwell B49DIN 976100000000000000
     
    Steel
     
    M27 × 2 mm
    300 mm50,000Rockwell B49DIN 976100000000000000
    1 m50,000Rockwell B49DIN 976100000000000000
     
    M27 × 3 mm
    300 mm50,000Rockwell B49DIN 976100000000000000
    1 m50,000Rockwell B49DIN 976100000000000000
     
    Extreme-Strength Steel
    Image of Product. Front orientation. Threaded Rods. Threaded Rods.
    Our strongest threaded rods have a tensile strength of 170,000 psi to hold up in your most demanding high-stress applications. They're about 20% stronger than high-strength steel rods. To avoid stripped threads during installation, make sure your nuts are also extreme-strength steel.
    Steel—Best for dry environments since moisture will cause these rods to rust.
    Lg.,
    m
    Tensile Strength,
    psi
    Fastener Strength
    Grade/Class
    Hardness
    Specs.
    Met
    Each
    Steel
     
    M27 × 3 mm
    1170,000ISO Class 12.9
    Rockwell C39DIN 976000000000000000
    2170,000ISO Class 12.9
    Rockwell C39DIN 97600000000000000
     
    Stainless Steel
    Image of Product. Front orientation. Threaded Rods. Threaded Rods.
    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.
    Lg.
    Tensile Strength,
    psi
    Hardness
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
     
    M27 × 3 mm
    300 mm70,000Not RatedDIN 9761000000000000000
    1 m70,000Not RatedDIN 9761000000000000000
    2 m70,000Not RatedDIN 9761000000000000000
     

    Threaded on Both Ends Setup Studs
    3D CAD models available

    Known as setup studs, these studs withstand sideways forces better than fully threaded studs because they have a strong unthreaded middle. The unthreaded middle also makes more contact with unthreaded holes, creating better alignment than a fully threaded stud.
    Black-Oxide Steel
    Image of Product. Front orientation. Contains Annotated. Setup Studs.
    Black-oxide steel studs resist rusting in dry environments.
    DIN 6379—Studs that meet DIN standards meet dimensional and material requirements.
    Thread,
    mm
    Lg.
    (A)
    Lg.
    (B)
    Lg.,
    mm
    Tensile Strength,
    psi
    Specs.
    Met
    Each
    M27 × 3 mm
    5639125100,000DIN 6379000000000000000
    12239200100,000DIN 637900000000000000
    20039315100,000DIN 637900000000000000
     

    Coupling Nuts
    3D CAD models available

    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.
    Black-Oxide Steel—A dark, matte coating creates a finished look. Nuts offer minimal corrosion resistance, so they're best for dry environments.
    Each
    Thread
    Size
    Lg.,
    mm
    Wd.,
    mm
    Threading
    Specs.
    Met
    1-9
    10-Up
    Zinc-Plated Steel
    M27 × 3 mm8141Fully ThreadedDIN 6334000000000000000000000
     
    Black-Oxide Steel
    M27 × 3 mm8141Fully ThreadedDIN 63340000000000000000000
     
    High-Strength Steel
    Image of Product. Front orientation. Coupling Nuts. Coupling Nuts.
    Rated Grade 8 or Class 10, these are about 25% stronger than 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.
    Each
    Thread
    Size
    Lg.,
    mm
    Wd.,
    mm
    Fastener Strength
    Grade/Class
    Threading
    Specs.
    Met
    1-9
    10-Up
    Zinc-Plated Steel
    M27 × 3 mm8141ISO Class 10
    Fully ThreadedDIN 6334000000000000000000000
     
    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.
    Each
    Thread
    Size
    Lg.,
    mm
    Wd.,
    mm
    Threading
    1-9
    10-Up
    18-8 Stainless Steel
    M27 × 3 mm8141Fully Threaded000000000000000000000
     
    back to top