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    34 Products

    Structural Washers

    Distribute pressure under structural screws and nuts in columns, joists, and I-beams. These thick washers are tested and certified to meet industry standards for handling high-stress loads.
    Steel
    Image of Product. Front orientation. Washers. Structural Washers.
    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.
    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
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Steel
    1/2"
    0.531"1.062"0.097" to 0.177"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 110098038A265000000
    5/8"
    0.688"1.312"0.122" to 0.177"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 15098038A26800000
    3/4"
    0.812"1.469"0.122" to 0.177"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 15098038A27400000
    7/8"
    0.938"1.750"0.136" to 0.177"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 12598038A27900000
    1"
    1.062"2.000"0.136" to 0.177"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 12598038A28200000
    1 1/8"
    1.188"2.250"0.136" to 0.177"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 11098038A28500000
    1 1/4"
    1.375"2.500"0.136" to 0.177"ASTM Grade A325, ASTM Grade A490ASME B18.21.1, ASTM F436 Type 11098038A28900000
    1 3/8"
    1.531"2.750"0.136" to 0.177"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 11098038A11100000
    1 1/2"
    1.625"3.000"0.136" to 0.177"ASTM Grade A325, ASTM Grade A490ASME B18.21.1, ASTM F436 Type 11098038A29300000
    1 5/8"
    1.770"3.250"0.178" to 0.280"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 1598038A11200000
    1 3/4"
    1.875"3.375"0.178" to 0.280"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 1598038A31100000
    1 7/8"
    2.000"3.500"0.178" to 0.280"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 1598038A11300000
    2"
    2.125"3.750"0.178" to 0.280"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 1598038A31200000
    2 1/4"
    2.407"4.000"0.240" to 0.340"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 1198038A1140000
    2 1/2"
    2.657"4.500"0.240" to 0.340"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 1198038A3130000
    2 3/4"
    2.907"5.000"0.240" to 0.340"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 1198038A1150000
    3"
    3.157"5.500"0.240" to 0.340"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 1198038A31400000
     
    Corrosion-Resistant Galvanized Steel
    1/2"
    0.531"1.062"0.097" to 0.177"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 15098119A03300000
    5/8"
    0.688"1.312"0.122" to 0.177"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 12598119A03500000
    3/4"
    0.812"1.469"0.122" to 0.177"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 12598119A03600000
    7/8"
    0.938"1.750"0.136" to 0.177"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 11098119A0370000
    1"
    1.062"2.000"0.136" to 0.177"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 11098119A03800000
    1 1/8"
    1.188"2.250"0.136" to 0.177"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 11098119A04100000
    1 1/4"
    1.375"2.500"0.136" to 0.177"ASTM Grade A325, ASTM Grade A490ASME B18.21.1, ASTM F436 Type 11098119A04400000
    1 3/8"
    1.531"2.750"0.136" to 0.177"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 11098119A12100000
    1 1/2"
    1.625"3.000"0.136" to 0.177"ASTM Grade A325, ASTM Grade A490ASME B18.21.1, ASTM F436 Type 1598119A11100000
    1 5/8"
    1.770"3.250"0.178" to 0.280"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 1598119A12200000
    1 3/4"
    1.875"3.375"0.178" to 0.280"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 1598119A11200000
    1 7/8"
    2.000"3.500"0.178" to 0.280"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 1198119A1230000
    2"
    2.125"3.750"0.178" to 0.280"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 1198119A1130000
    2 1/4"
    2.407"4.000"0.240" to 0.340"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 1198119A1240000
    2 1/2"
    2.657"4.500"0.240" to 0.340"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 1198119A11400000
    2 3/4"
    2.907"5.000"0.240" to 0.340"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 1198119A12500000
    3"
    3.157"5.500"0.240" to 0.340"ASTM Grade A325, ASTM Grade A490ASTM F436 Type 1198119A11500000
     
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