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

    General Purpose Washers

    Your go-to metal washer for every screw size. Washers take the pressure off nuts and screws to protect mounting surfaces.
    Stainless SteelAbout Stainless Steel
    Image of Product. Front orientation. Washers. General Purpose Washers.
    High-Temperature High-Strength A286 Stainless Steel—These washers resist high temperatures up to 1300° F. In addition, they are stronger than 316 stainless steel and withstand chemicals, such as bleach and chlorine. However, they won't hold up to salt water as well as 316 stainless steel.
    For Screw
    Size
    ID
    OD
    Thk.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    High-Temperature High-Strength A286 Stainless Steel
    No. 4
    0.125"0.312"0.025" to 0.040"ASME B18.21.11000000000000000
    No. 6
    0.156"0.375"0.036" to 0.065"ASME B18.21.1100000000000000
    No. 8
    0.188"0.438"0.036" to 0.065"ASME B18.21.1100000000000000
    No. 10
    0.219"0.500"0.036" to 0.065"ASME B18.21.1100000000000000
    1/4"
    0.312"0.734"0.051" to 0.080"ASME B18.21.1100000000000000
    5/16"
    0.375"0.875"0.064" to 0.104"ASME B18.21.1100000000000000
    3/8"
    0.438"1.000"0.064" to 0.104"ASME B18.21.1100000000000000
    1/2"
    0.562"1.375"0.086" to 0.132"ASME B18.21.1100000000000000
     

    USS Washers

    These washers meet USS sizing specifications and typically have larger diameters than SAE washers. As a result, they accommodate larger screws and nuts and distribute pressure across a wider surface area. They are also thicker, so they withstand heavier loads and span wider gaps when used as spacers.
    Stainless SteelAbout Stainless Steel
    Image of Product. Front orientation. Washers. USS Washers.
    High-Temperature High-Strength A286 Stainless Steel—These washers resist high temperatures up to 1300° F. In addition, they are stronger than 316 stainless steel and withstand chemicals, such as bleach and chlorine. However, they won't hold up to salt water as well as 316 stainless steel.
    For Screw
    Size
    ID
    OD
    Thk.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    High-Temperature High-Strength A286 Stainless Steel
    1/4"
    0.312"0.734"0.051" to 0.080"ASME B18.21.11000000000000000
    5/16"
    0.375"0.875"0.064" to 0.104"ASME B18.21.1100000000000000
    3/8"
    0.438"1.000"0.064" to 0.104"ASME B18.21.1100000000000000
    1/2"
    0.562"1.375"0.086" to 0.132"ASME B18.21.1100000000000000
     
    back to top