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

    Oversized Washers

    These washers have exaggerated diameters to cover large holes and to compensate for uneven mounting surfaces. They are also thicker than general purpose washers, so they bridge wide gaps when used as spacers.
    Steel
    Image of Product. Front orientation. Washers. Oversized Washers.
    Zinc-Yellow-Chromate-Plated Steel—With the same corrosion resistance as zinc-plated steel, these withstand occasional exposure to moisture.
    Steel—Best for dry environments since moisture will cause these washers to rust.
    Corrosion-Resistant Galvanized Steel—These washers combine the strength of steel with the rust resistance of stainless steel. They're an economical alternative to 18-8 stainless steel in wet and outdoor environments, but they won't hold up to salt water and chemicals.
    Material Certificate—Washers include a report with a traceable lot number.
    For Fastener Strength Grade/Class—If you require screws or nuts with a specific fastener strength rating, make sure your washer matches the grade or class.
    For Screw
    Size
    ID
    OD
    Thk.
    For Fastener Strength
    Grade/Class
    Certificate Type
    Pkg.
    Qty.
    Pkg.
    Zinc-Yellow-Chromate-Plated Steel
    1/4"
    0.281"0.625"0.090" to 0.108"SAE Grade 8
    10098025A029000000
    5/16"
    0.344"0.688"0.090" to 0.108"SAE Grade 8
    5098025A03000000
    3/8"
    0.406"0.812"0.110" to 0.126"SAE Grade 8
    5098025A03100000
    7/16"
    0.469"0.922"0.110" to 0.126"SAE Grade 8
    2598025A1320000
    1/2"
    0.531"1.062"0.190" to 0.208"SAE Grade 8
    2598025A13300000
    9/16"
    0.594"1.172"0.168" to 0.191"SAE Grade 8
    1098025A03400000
    5/8"
    0.656"1.312"0.206" to 0.229"SAE Grade 8
    Material Certificate1098025A03500000
    3/4"
    0.812"1.469"0.206" to 0.229"SAE Grade 8
    1098025A03600000
    7/8"
    0.938"1.750"0.235" to 0.264"SAE Grade 8
    598025A0370000
    1"
    1.062"2.000"0.235" to 0.264"SAE Grade 8
    598025A0380000
    1 1/8"
    1.188"2.250"0.235" to 0.264"SAE Grade 8
    598025A13900000
    1 1/4"
    1.375"2.500"0.235" to 0.264"SAE Grade 8
    598025A04000000
    1 3/8"
    1.438"2.750"0.235" to 0.264"SAE Grade 8
    198025A0430000
    1 1/2"
    1.562"3.000"0.235" to 0.264"SAE Grade 8
    198025A0450000
     
    Steel
    No. 10
    0.203"0.500"0.089" to 0.099"2591201A01100000
    1/4"
    0.281"0.625"0.120" to 0.130"2591201A02900000
    5/16"
    0.344"0.750"0.120" to 0.130"2591201A03000000
    3/8"
    0.406"0.875"0.120" to 0.130"1091201A0310000
    7/16"
    0.469"1.000"0.151" to 0.161"1091201A03200000
    1/2"
    0.531"1.000"0.183" to 0.193"1091201A03300000
    5/8"
    0.656"1.250"0.245" to 0.255"591201A03500000
    3/4"
    0.781"1.500"0.245" to 0.255"591201A03600000
    7/8"
    0.906"1.750"0.245" to 0.255"191201A0370000
    1"
    1.031"2.000"0.308" to 0.318"191201A0380000
    1 1/8"
    1.156"2.250"0.308" to 0.318"191201A0390000
    1 1/4"
    1.281"2.250"0.308" to 0.318"191201A0400000
     
    Corrosion-Resistant Galvanized Steel
    1/2"
    0.562"3.000"0.235" to 0.265"198970A10000000
    5/8"
    0.688"3.000"0.235" to 0.265"198970A12500000
    3/4"
    0.812"3.000"0.235" to 0.265"198970A1500000
    7/8"
    0.938"3.000"0.235" to 0.265"198970A17500000
    1"
    1.062"3.250"0.235" to 0.265"198970A20000000
    1 1/4"
    1.375"4.000"0.485" to 0.515"198970A22500000
     
    back to top