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

    Mil. Spec. Washers

    These washers are manufactured and tested to strict U.S. military standards for material and construction. They take the pressure off screws and nuts to protect mounting surfaces.
    Steel
    Image of Product. Front orientation. Washers. Mil. Spec. Washers.
    Low-Friction Cadmium-Plated Steel—The plating reduces friction between the washer, fastener, and mounting surface to prevent sticking when fastening and loosening. It also creates a barrier against rust that's comparable to zinc yellow-chromate plating.
    For Screw
    Size
    ID
    OD
    Thk.
    Mil.
    Spec.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Low-Friction Cadmium-Plated Steel
    No. 1
    0.078"0.188"0.016" to 0.025"MS27183-110000000000000000
    No. 2
    0.094"0.250"0.016" to 0.025"MS27183-2ASME B18.21.11000000000000000
    No. 3
    0.125"0.250"0.017" to 0.028"MS27183-31000000000000000
    No. 4
    0.125"0.312"0.025" to 0.040"MS27183-4ASME B18.21.11000000000000000
    No. 4
    0.125"0.375"0.025" to 0.040"MS27183-441000000000000000
    No. 5
    0.141"0.281"0.025" to 0.040"MS27183-451000000000000000
    No. 6
    0.156"0.250"0.013" to 0.020"MS27183-431000000000000000
    No. 6
    0.156"0.312"0.027" to 0.048"MS27183-51000000000000000
    No. 6
    0.156"0.375"0.036" to 0.065"MS27183-6ASME B18.21.11000000000000000
    No. 8
    0.188"0.375"0.036" to 0.065"MS27183-71000000000000000
    No. 8
    0.188"0.438"0.036" to 0.065"MS27183-41ASME B18.21.110000000000000000
    No. 8
    0.188"0.500"0.051" to 0.080"MS27183-461000000000000000
    No. 10
    0.219"0.365"0.025" to 0.040"MS27183-471000000000000000
    No. 10
    0.219"0.438"0.036" to 0.065"MS27183-81000000000000000
    No. 10
    0.219"0.500"0.036" to 0.065"MS27183-42ASME B18.21.110000000000000000
    No. 12
    0.250"0.562"0.025" to 0.040"MS27183-491000000000000000
    No. 12
    0.250"0.562"0.051" to 0.080"MS27183-9ASME B18.21.110000000000000000
    No. 12
    0.250"0.625"0.025" to 0.040"MS27183-5010000000000000000
    No. 12
    0.250"0.938"0.051" to 0.080"MS27183-48250000000000000
    No. 12
    0.250"1.000"0.051" to 0.080"MS27183-51250000000000000
    1/4"
    0.281"0.625"0.051" to 0.080"MS27183-10ASME B18.21.110000000000000000
    1/4"
    0.281"0.734"0.051" to 0.080"MS27183-5210000000000000000
    1/4"
    0.312"0.500"0.027" to 0.048"MS27183-545000000000000000
    1/4"
    0.312"0.875"0.051" to 0.075"MS27183-532500000000000000
    1/4"
    0.313"0.734"0.051" to 0.080"MS27183-11ASME B18.21.15000000000000000
    5/16"
    0.344"0.688"0.051" to 0.080"MS27183-12ASME B18.21.110000000000000000
    5/16"
    0.375"0.625"0.027" to 0.048"MS27183-56500000000000000
    5/16"
    0.375"0.734"0.064" to 0.094"MS27183-555000000000000000
    5/16"
    0.375"0.875"0.064" to 0.104"MS27183-13ASME B18.21.1500000000000000
    3/8"
    0.406"0.812"0.051" to 0.080"MS27183-14ASME B18.21.1500000000000000
    3/8"
    0.406"0.875"0.051" to 0.070"MS27183-575000000000000000
    3/8"
    0.412"0.625"0.025" to 0.040"MS27183-58500000000000000
    3/8"
    0.438"0.875"0.051" to 0.080"MS27183-605000000000000000
    3/8"
    0.438"1.365"0.064" to 0.104"MS27183-591000000000000000
    3/8"
    0.438"1.625"0.051" to 0.104"MS27183-611000000000000000
    7/16"
    0.438"1.000"0.064" to 0.104"MS27183-155000000000000000
    7/16"
    0.469"0.734"0.051" to 0.080"MS27183-625000000000000000
    7/16"
    0.469"0.922"0.051" to 0.080"MS27183-16ASME B18.21.15000000000000000
    7/16"
    0.500"1.250"0.064" to 0.104"MS27183-17ASME B18.21.15000000000000000
    1/2"
    0.531"1.062"0.074" to 0.121"MS27183-18ASME B18.21.12500000000000000
    1/2"
    0.562"1.375"0.086" to 0.132"MS27183-19ASME B18.21.1100000000000000
    9/16"
    0.594"1.156"0.074" to 0.121"MS27183-20ASME B18.21.12500000000000000
    5/8"
    0.656"1.312"0.074" to 0.121"MS27183-21ASME B18.21.12500000000000000
    5/8"
    0.656"2.125"0.080" to 0.115"MS27183-63500000000000000
    5/8"
    0.688"1.750"0.108" to 0.160"MS27183-22ASME B18.21.11000000000000000
    3/4"
    0.812"1.469"0.108" to 0.160"MS27183-23ASME B18.21.11000000000000000
    3/4"
    0.812"2.000"0.122" to 0.177"MS27183-24ASME B18.21.1500000000000000
    7/8"
    0.938"1.750"0.108" to 0.160"MS27183-25ASME B18.21.11000000000000000
    7/8"
    0.938"2.250"0.136" to 0.192"MS27183-26ASME B18.21.1500000000000000
    1"
    1.062"2.000"0.108" to 0.160"MS27183-27ASME B18.21.11000000000000000
    1"
    1.062"2.500"0.136" to 0.192"MS27183-28ASME B18.21.110000000000000
    1 1/8"
    1.250"2.750"0.136" to 0.192"MS27183-29ASME B18.21.110000000000000
    1 1/4"
    1.375"3.000"0.136" to 0.192"MS27183-30ASME B18.21.110000000000000
    1 3/8"
    1.500"3.250"0.153" to 0.213"MS27183-31ASME B18.21.110000000000000
    1 1/2"
    1.625"3.500"0.153" to 0.213"MS27183-32ASME B18.21.110000000000000
    1 5/8"
    1.750"3.750"0.153" to 0.213"MS27183-33ASME B18.21.1100000000000000
    1 3/4"
    1.875"4.000"0.153" to 0.213"MS27183-34ASME B18.21.1100000000000000
    1 7/8"
    2.000"4.250"0.153" to 0.213"MS27183-35ASME B18.21.1100000000000000
    2"
    2.125"4.500"0.153" to 0.213"MS27183-36ASME B18.21.1100000000000000
     
    back to top