McMaster-Carr logo
    Filter by
    System of Measurement
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    DFARS Specialty Metals
    Industrial Info Compare
    Thread Type
    Industrial Info Compare
    Thread Spacing
    Industrial Info Compare
    Overall Length
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    102 Products

    Nylon Snap-In Nuts

    These nylon nuts are chemical resistant, nonconductive, and lightweight. Inserting a screw pushes the prongs against the panel to secure the nut.
    Square
    Image of Product. Bottom orientation. Snap-In Nuts. Nylon Snap-In Nuts, Square.
    For Screw
    Size
    For Panel Thk.
    Square Hole
    Size
    Lg.
    Wd.
    Ht.
    Flange
    Thk.
    Max. Temp.,
    ° F
    Color
    Pkg.
    Qty.
    Pkg.
    Nylon
    No. 4
    0.031" to 0.125"0.275" to 0.285"3/8"3/8"7/32"1/16"165Off-White50000000000000000
    No. 6, No. 8
    0.031" to 0.125"0.245" to 0.255"3/8"3/8"9/32"1/32"165Off-White2500000000000000
    No. 6
    0.032" to 0.156"0.2" to 0.27"7/16"5/16"5/16"1/32"165Off-White5000000000000000
    No. 6
    0.062" to 0.275"0.265" to 0.27"1/2"3/8"7/16"1/32"165Off-White2500000000000000
    No. 8
    0.031" to 0.156"0.265" to 0.281"3/8"3/8"11/32"1/32"165Off-White5000000000000000
    No. 8
    0.078" to 0.175"0.285" to 0.295"3/8"3/8"11/32"1/32"165Off-White2500000000000000
    No. 8, No. 10
    0.218" to 0.23"0.35" to 0.355"15/32"15/32"13/32"1/16"165Off-White2500000000000000
    No. 10
    0.031" to 0.156"0.38" to 0.39"5/8"5/8"5/16"3/32"165Off-White2500000000000000
    No. 10
    0.032" to 0.234"0.32" to 0.335"15/32"15/32"13/32"1/16"165Off-White2500000000000000
    No. 10
    0.064" to 0.187"0.37" to 0.39"19/32"19/32"9/32"3/32"165Off-White2500000000000000
    No. 12
    0.031" to 0.1"0.37" to 0.375"5/8"5/8"9/32"3/32"165Off-White5000000000000000
     
    Round
    Image of Product. Bottom orientation. Snap-In Nuts. Nylon Snap-In Nuts, Round.
    For Screw
    Size
    For Panel Thk.
    Square Hole
    Size
    OD
    Wd.
    Ht.
    Flange
    Thk.
    Max. Temp.,
    ° F
    Color
    Pkg.
    Qty.
    Pkg.
    Nylon
    No. 6
    0.032" to 0.15"0.28" to 0.285"1/2"11/32"23/32"165Off-White25000000000000000
    No. 6
    0.062" to 0.165"0.27" to 0.28"3/8"5/16"3/32"165Off-White2500000000000000
    No. 8
    0.031" to 0.156"0.275" to 0.29"1/2"5/16"3/8"165Off-White2500000000000000
    No. 8
    0.062" to 0.17"0.275" to 0.28"1/2"5/16"5/16"165Off-White2500000000000000
    No. 10
    0.031" to 0.16"0.305" to 0.31"1/2"9/32"1/32"165Off-White5000000000000000
    No. 12
    0.032" to 0.125"0.35" to 0.355"17/32"9/32"1/8"165Off-White2500000000000000
    1/4"
    0.031" to 0.125"0.37" to 0.375"5/8"5/8"9/32"1 1/16"165Off-White1000000000000000
    1/4"
    0.031" to 0.156"0.33" to 0.343"9/16"11/32"1/16"165Off-White2500000000000000
    5/16"
    0.032" to 0.135"0.415" to 0.43"3/4"5/16"1/16"165Off-White1000000000000000
     

    Steel Snap-In Nuts

    Snap these nuts—also known as cage nuts—into square holes in thin material. They’re often used to mount servers and other equipment in electronics racks. Threads float inside the cage, so you can fasten a bolt at a slight angle to align off-center parts. Mounting legs expand to lock these nuts in place.
    Install these nuts by hand, with pliers, or with a snap-in nut installation and removal tool.
    Rectangular with Floating Nut
    Image of Product. Front orientation. Snap-In Nuts. Steel Snap-In Nuts.
    Image of Attribute. Front orientation. Contains Annotated. Steel Snap-In Nuts.
    Phosphate-Coated Steel—Phosphate-coated steel nuts are mildly corrosion resistant in dry environments.
    Zinc-Plated Steel—Zinc-plated steel nuts resist corrosion in wet environments.
    Thread Size
    For Panel Thk.
    Square Hole
    Size
    Wd.
    Head
    Ht.
    Color
    Pkg.
    Qty.
    Pkg.
    Phosphate-Coated Steel
    10-24
    0.025" to 0.063"0.375" to 0.38"0.52"0.25"Black25000000000000000
    10-24
    0.064" to 0.105"0.375" to 0.38"0.52"0.25"Black2500000000000000
    10-32
    0.025" to 0.063"0.375" to 0.38"0.52"0.25"Black150000000000000
    10-32
    0.093" to 0.126"0.375" to 0.38"0.52"0.25"Black100000000000000
    1/4"-20
    0.025" to 0.063"0.375" to 0.38"0.52"0.25"Black250000000000000
    1/4"-20
    0.064" to 0.105"0.375" to 0.38"0.52"0.25"Black2500000000000000
    1/4"-20
    0.093" to 0.126"0.375" to 0.38"0.52"0.25"Black250000000000000
    1/4"-20
    0.125" to 0.156"0.375" to 0.38"0.52"0.25"Black1000000000000000
    5/16"-18
    0.023" to 0.063"0.503" to 0.508"0.65"0.33"Black1000000000000000
    5/16"-18
    0.057" to 0.092"0.503" to 0.508"0.66"0.3"Black1000000000000000
    5/16"-18
    0.093" to 0.126"0.503" to 0.508"0.66"0.3"Black100000000000000
    3/8"-16
    0.093" to 0.126"0.588" to 0.593"0.87"0.41"Black50000000000000
    M8 × 1.25 mm1.4 mm to 2.3 mm0.503" to 0.508"0.66"0.3"Black100000000000000
     
    Zinc-Plated Steel
    6-32
    0.025" to 0.063"0.375" to 0.38"0.52"0.25"2500000000000000
    8-32
    0.025" to 0.063"0.375" to 0.38"0.52"0.25"2500000000000000
    8-32
    0.064" to 0.105"0.375" to 0.38"0.52"0.25"2500000000000000
    8-32
    0.093" to 0.126"0.375" to 0.38"0.52"0.25"100000000000000
    10-24
    0.025" to 0.063"0.375" to 0.38"0.52"0.25"2500000000000000
    10-24
    0.064" to 0.105"0.375" to 0.38"0.52"0.25"2500000000000000
    10-24
    0.093" to 0.126"0.375" to 0.38"0.54"0.25"2500000000000000
    10-32
    0.025" to 0.063"0.375" to 0.38"0.52"0.25"2500000000000000
    10-32
    0.064" to 0.105"0.375" to 0.38"0.52"0.25"2500000000000000
    10-32
    0.093" to 0.126"0.375" to 0.38"0.52"0.25"2500000000000000
    10-32
    0.125" to 0.156"0.375" to 0.38"0.54"0.25"2500000000000000
    12-24
    0.064" to 0.105"0.375" to 0.38"0.52"0.25"2500000000000000
    1/4"-20
    0.025" to 0.063"0.375" to 0.38"0.52"0.25"2500000000000000
    1/4"-20
    0.064" to 0.105"0.375" to 0.38"0.52"0.25"2500000000000000
    1/4"-20
    0.093" to 0.126"0.375" to 0.38"0.52"0.25"2500000000000000
    1/4"-20
    0.125" to 0.156"0.375" to 0.38"0.53"0.25"2500000000000000
    5/16"-18
    0.028" to 0.056"0.503" to 0.508"0.66"0.3"100000000000000
    5/16"-18
    0.057" to 0.092"0.503" to 0.508"0.66"0.3"100000000000000
    5/16"-18
    0.093" to 0.126"0.503" to 0.508"0.66"0.3"100000000000000
    5/16"-18
    0.127" to 0.162"0.503" to 0.508"0.66"0.3"1000000000000000
    3/8"-16
    0.028" to 0.056"0.503" to 0.508"0.66"0.3"1000000000000000
    3/8"-16
    0.057" to 0.092"0.503" to 0.508"0.66"0.3"1000000000000000
    3/8"-16
    0.093" to 0.126"0.503" to 0.508"0.66"0.3"100000000000000
    3/8"-16
    0.127" to 0.162"0.503" to 0.508"0.7"0.3"1500000000000000
    3/8"-16
    0.162" to 0.21"0.573" to 0.578"0.87"0.41"10000000000000
    3/8"-16
    0.24" to 0.26"0.588" to 0.593"0.87"0.41"10000000000000
    1/2"-13
    0.093" to 0.126"0.588" to 0.593"0.87"0.41"500000000000000
    M5 × 0.8 mm0.7 mm to 1.6 mm0.375" to 0.38"0.54"0.25"2500000000000000
    M5 × 0.8 mm1.7 mm to 2.6 mm0.375" to 0.38"0.54"0.25"2500000000000000
    M5 × 0.8 mm2.4 mm to 3.2 mm0.375" to 0.38"0.54"0.25"2500000000000000
    M5 × 0.8 mm3.2 mm to 3.9 mm0.375" to 0.38"0.54"0.25"2500000000000000
    M6 × 1 mm0.7 mm to 1.6 mm0.375" to 0.38"0.52"0.25"2500000000000000
    M6 × 1 mm1.7 mm to 2.6 mm0.375" to 0.38"0.52"0.25"2500000000000000
    M6 × 1 mm2.4 mm to 3.2 mm0.375" to 0.38"0.54"0.25"2500000000000000
    M6 × 1 mm3.2 mm to 3.9 mm0.375" to 0.38"0.54"0.25"2500000000000000
    M8 × 1.25 mm0.7 mm to 1.4 mm0.503" to 0.508"0.66"0.3"10000000000000
    M8 × 1.25 mm1.5 mm to 2.3 mm0.503" to 0.508"0.7"0.3"1000000000000000
    M8 × 1.25 mm2.4 mm to 3.2 mm0.503" to 0.508"0.7"0.3"1000000000000000
    M8 × 1.25 mm3.2 mm to 4.1 mm0.503" to 0.508"0.66"0.3"10000000000000
    M10 × 1.5 mm1.5 mm to 2.3 mm0.503" to 0.508"0.7"0.3"1000000000000000
    M10 × 1.5 mm2.4 mm to 3.2 mm0.503" to 0.508"0.7"0.3"1000000000000000
    M10 × 1.5 mm3.2 mm to 4.1 mm0.503" to 0.508"0.66"0.3"10000000000000
    M10 × 1.5 mm4.1 mm to 5 mm0.503" to 0.508"0.66"0.3"10000000000000
     

    Stainless Steel Snap-In Nuts

    For excellent corrosion resistance in most environments, these nuts are made of 18-8 stainless steel. Snap them into square holes in thin material, and the mounting legs expand to lock them in place. Also known as cage nuts, the threads float inside the cage, so you can fasten a bolt at a slight angle to align off-center parts. These nuts are often used to mount servers and other equipment in electronics racks. They may be mildly magnetic.
    Install these nuts by hand, with pliers, or with a snap-in nut installation and removal tool.
    Rectangular with Floating Nut
    Image of Product. Front orientation. Snap-In Nuts. Stainless Steel Snap-In Nuts.
    Image of Attribute. Front orientation. Contains Annotated. Stainless Steel Snap-In Nuts.
    Thread
    Size
    For Panel Thk.
    Square Hole
    Size
    Wd.
    Head
    Ht.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    10-24
    0.025" to 0.063"0.375" to 0.38"0.52"0.25"500000000000000
    10-24
    0.064" to 0.105"0.375" to 0.38"0.52"0.25"500000000000000
    10-24
    0.093" to 0.126"0.343" to 0.38"0.52"0.25"500000000000000
    10-24
    0.125" to 0.156"0.375" to 0.38"0.52"0.25"500000000000000
    10-32
    0.025" to 0.063"0.375" to 0.38"0.52"0.25"50000000000000
    10-32
    0.064" to 0.105"0.375" to 0.38"0.49"0.25"50000000000000
    10-32
    0.093" to 0.126"0.343" to 0.38"0.52"0.25"50000000000000
    10-32
    0.125" to 0.156"0.375" to 0.38"0.52"0.25"500000000000000
    1/4"-20
    0.025" to 0.063"0.375" to 0.38"0.52"0.25"50000000000000
    1/4"-20
    0.064" to 0.105"0.375" to 0.38"0.52"0.25"50000000000000
    1/4"-20
    0.093" to 0.126"0.375" to 0.38"0.52"0.25"50000000000000
    1/4"-20
    0.125" to 0.156"0.343" to 0.38"0.52"0.25"50000000000000
    5/16"-18
    0.093" to 0.126"0.503" to 0.508"0.66"0.29"10000000000000
    M5 × 0.8 mm0.7 mm to 1.6 mm0.343" to 0.38"0.52"0.25"50000000000000
    M5 × 0.8 mm1.7 mm to 2.6 mm0.343" to 0.38"0.52"0.25"50000000000000
    M5 × 0.8 mm2.4 mm to 3.2 mm0.343" to 0.38"0.52"0.25"50000000000000
    M5 × 0.8 mm3.2 mm to 3.9 mm0.375" to 0.38"0.52"0.25"50000000000000
    M6 × 1 mm0.7 mm to 1.6 mm0.343" to 0.38"0.52"0.25"50000000000000
    M6 × 1 mm1.7 mm to 2.6 mm0.375" to 0.38"0.52"0.25"50000000000000
    M6 × 1 mm2.4 mm to 3.2 mm0.343" to 0.38"0.52"0.25"50000000000000
    M6 × 1 mm3.2 mm to 3.9 mm0.375" to 0.38"0.52"0.25"50000000000000
     

    Snap-In Nut Installation and Removal Tools

    Image of Product. Front orientation. Snap-In Nut Tools. Style A.

    Style A

    Image of Product. Front orientation. Snap-In Nut Tools. Style B.

    Style B

    Image of Product. Front orientation. Snap-In Nut Tools. Style C.

    Style C

    Your fingers will thank you later—these tools compress the legs of snap-in nuts so they’re easy to install and remove. This is especially helpful if you’re installing a bunch back-to-back.
    Style A—Style A tools work like a shoehorn. Angle one of the nut’s legs into the hole, then hook one of the tool’s prongs under the other leg to pull the nut into place.
    Style B—Style B tools compress both nut legs simultaneously, so you can pop nuts in or out with a pinch. Simply squeeze the handle like a nail clipper. To grip nuts of different sizes, adjust the screw to open and close the end.
    Style C—Style C tools are the most ergonomic. Just like a screwdriver, they have a cushion grip and a long handle for leverage. Dip one of the nut’s legs into the hole, then use the tool’s curved lip to tuck in the other leg, pulling the nut into place.
    Style
    For Square
    Hole Size
    Overall
    Lg.
    Material
    Handle
    Material
    Grip
    Style
    Each
    AAny2 5/16"Steel0000000000000
    B0.313" to 0.375"3"Aluminum
    000000000000
    CAny7 3/4"SteelPlasticCushion000000000000

    Easy-Install Snap-In Nuts

    Pinch the flexible nylon casing of these nuts to add threads to thin metal. Unlike typical rigid snap-in nuts, these squeeze into a square hole from the front or back of your material. Once installed, they stay put. They meet EN 61373, so they’re certified for use in environments with heavy vibration—think a bumpy railcar. NEBS GR-63-CORE tested, they’ve also passed earthquake simulations. In your facility, this means you can trust them to hold tight to sensitive equipment, like the servers suspended on your electrical racks.
    Also known as cage nuts, they come in two parts—the cage and the nut—that you combine before installation. Threads float inside the cage, so you can fasten a bolt at a slight angle to align with off-center parts.
    Rectangular with Floating Nut
    Image of Product. Bottom orientation. Snap-In Nuts. Easy-Install Snap-In Nuts.
    Image of Attribute. Front orientation. Contains Annotated. Easy-Install Snap-In Nuts.
    Thread
    Size
    For Panel
    Thk., mm
    Square Hole
    Size
    Wd.
    Head
    Ht.
    Case
    Material
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
    M6 × 1 mm1 to 40.362" to 0.375"0.5"0.41"PlasticEN 61373, NEBS GR-63-CORE10000000000000000
     

    Grounding Snap-In Nuts

    Pave a safe path for electricity—these snap-in nuts dig into the mounting surface and cut through coatings to touch the metal below for a proper ground. They’re often used to mount servers and other equipment into electronics racks. All meet EIA-310 (Electronic Industries Alliance) specifications for use in standard 19" electronics racks. Simply snap these nuts, also known as cage nuts, into square holes.
    These snap-in nuts have a flexible nylon casing, so you can install them with a pinch. Unlike rigid snap-in nuts, you can squeeze them into a hole from either side. As you fasten a bolt, the nut in the casing is pulled up, pushing its teeth into the mounting surface.
    Rectangular with Floating Nut
    Image of Product. Bottom orientation. Snap-In Nuts. Grounding Snap-In Nuts.
    Image of Attribute. Front orientation. Contains Annotated. Grounding Snap-In Nuts.
    Thread
    Size
    For Panel
    Thk., mm
    Square Hole
    Size
    Wd.
    Head
    Ht.
    Case
    Material
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
    M6 × 1 mm1 to 40.362" to 0.375"0.5"0.45"PlasticEIA-31010000000000000000
     
    back to top