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    67 Products

    Mil. Spec. Split Lock Washers

    Image of Product. Front orientation. Lock Washers. Split-Lock Washer, Mil. Spec..
    These washers are manufactured and tested to strict U.S. military standards for material and construction. As you tighten, the uneven ends bite into the nut or screw so it won't loosen due to mild vibration. While they don't hold as tightly as other lock washers, they are a great fit for electrical panels, light fixtures, and other light duty assemblies. Split lock washers are not reusable, and they only work with fasteners that have right-hand threads.
    Passivated 18-8 Stainless Steel—The choice for wet and outdoor environments, these washers won't rust when exposed to moisture. However, they can't hold up to the harsh chemicals that 316 stainless steel can.
    Black-Oxide 18-8 Stainless Steel—Typically chosen for their appearance, these washers have a dark, matte coating to create a finished look. They won't rust in wet and outdoor environments, but can't hold up to harsh chemicals as well as 316 stainless steel.
    Super-Corrosion-Resistant Passivated 316 Stainless Steel—Superior to 18-8 stainless steel, these washers won't degrade when exposed to harsh weather, salt water, and most chemicals.
    Super-Corrosion-Resistant Black-Oxide 316 Stainless Steel—Combines a finished appearance with the rust resistance of 316 stainless steel. Even if the coating wears off, these washers will hold up in just about any environment, including salt water and most chemicals.
    Zinc-Yellow-Chromate-Plated Steel—With the same corrosion resistance as zinc-plated steel, these withstand occasional exposure to moisture.
    Corrosion-Resistant Cadmium-Plated Steel—The finish creates a better barrier against rust than zinc plating for use in wet and outdoor environments.
    For Screw
    Size
    ID
    OD
    Thk.
    Mil. Spec.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Passivated 18-8 Stainless Steel
    5/16"
    0.314"0.583"0.078"MS35338-140ASME B18.21.12500000000000000
    3/8"
    0.377"0.680"0.094"MS35338-141ASME B18.21.12500000000000000
    7/16"
    0.440"0.776"0.109"MS35338-142ASME B18.21.1100000000000000
    1/2"
    0.502"0.869"0.125"MS35338-143ASME B18.21.1100000000000000
    9/16"
    0.564"0.965"0.141"MS35338-144ASME B18.21.1100000000000000
    5/8"
    0.628"1.073"0.156"MS35338-145ASME B18.21.11000000000000000
    3/4"
    0.753"1.265"0.188"MS35338-146ASME B18.21.1500000000000000
    1"
    1.003"1.656"0.250"MS35338-148ASME B18.21.120000000000000
    1 1/8"
    1.129"1.847"0.281"MS35338-149ASME B18.21.110000000000000
    1 1/4"
    1.254"2.036"0.312"MS35338-150ASME B18.21.110000000000000
     
    Black-Oxide 18-8 Stainless Steel
    5/16"
    0.314"0.583"0.078"MS35338-140ASME B18.21.1500000000000000
    3/8"
    0.377"0.680"0.094"MS35338-141ASME B18.21.1100000000000000
    7/16"
    0.440"0.776"0.109"MS35338-142ASME B18.21.1100000000000000
    1/2"
    0.502"0.869"0.125"MS35338-143ASME B18.21.1100000000000000
    9/16"
    0.564"0.965"0.141"MS35338-144ASME B18.21.120000000000000
    5/8"
    0.628"1.073"0.156"MS35338-145ASME B18.21.120000000000000
     
    Super-Corrosion-Resistant Passivated 316 Stainless Steel
    No. 2
    0.088"0.172"0.020"MS35338-134ASME B18.21.11000000000000000
    No. 4
    0.114"0.209"0.025"MS35338-135ASME B18.21.11000000000000000
    No. 6
    0.141"0.250"0.031"MS35338-136ASME B18.21.11000000000000000
    No. 8
    0.167"0.293"0.040"MS35338-137ASME B18.21.11000000000000000
    No. 10
    0.193"0.334"0.047"MS35338-138ASME B18.21.11000000000000000
    1/4"
    0.252"0.487"0.062"MS35338-139ASME B18.21.1500000000000000
    5/16"
    0.314"0.583"0.078"MS35338-140ASME B18.21.1100000000000000
    3/8"
    0.377"0.680"0.094"MS35338-141ASME B18.21.1100000000000000
    1/2"
    0.502"0.869"0.125"MS35338-143ASME B18.21.150000000000000
    5/8"
    0.628"1.073"0.156"MS35338-145ASME B18.21.130000000000000
    3/4"
    0.753"1.265"0.188"MS35338-146ASME B18.21.120000000000000
     
    Super-Corrosion-Resistant Black-Oxide 316 Stainless Steel
    No. 2
    0.088"0.172"0.020"MS35338-134ASME B18.21.11000000000000000
    No. 4
    0.114"0.209"0.025"MS35338-135ASME B18.21.11000000000000000
    No. 6
    0.141"0.250"0.031"MS35338-136ASME B18.21.11000000000000000
    No. 8
    0.167"0.293"0.040"MS35338-137ASME B18.21.11000000000000000
    No. 10
    0.193"0.334"0.047"MS35338-138ASME B18.21.11000000000000000
    1/4"
    0.252"0.487"0.062"MS35338-139ASME B18.21.1500000000000000
    3/8"
    0.377"0.680"0.094"MS35338-141ASME B18.21.11000000000000000
    1/2"
    0.502"0.869"0.125"MS35338-143ASME B18.21.1500000000000000
    3/4"
    0.753"1.265"0.188"MS35338-146ASME B18.21.120000000000000
     
    Zinc-Yellow-Chromate-Plated Steel
    No. 2
    0.088"0.172"0.020"MS35338-39ASME B18.21.11000000000000000
    No. 4
    0.114"0.209"0.025"MS35338-40ASME B18.21.11000000000000000
    No. 6
    0.141"0.250"0.031"MS35338-41ASME B18.21.11000000000000000
    No. 8
    0.167"0.293"0.040"MS35338-42ASME B18.21.11000000000000000
    No. 10
    0.193"0.334"0.047"MS35338-43ASME B18.21.11000000000000000
    1/4"
    0.252"0.487"0.062"MS35338-44ASME B18.21.1500000000000000
    5/16"
    0.314"0.583"0.078"MS35338-45ASME B18.21.1500000000000000
    3/8"
    0.377"0.680"0.094"MS35338-46ASME B18.21.1250000000000000
    7/16"
    0.440"0.776"0.109"MS35338-47ASME B18.21.1250000000000000
    1/2"
    0.502"0.869"0.125"MS35338-48ASME B18.21.1100000000000000
    9/16"
    0.564"0.965"0.141"MS35338-49ASME B18.21.1100000000000000
    5/8"
    0.628"1.073"0.156"MS35338-50ASME B18.21.1100000000000000
    3/4"
    0.753"1.265"0.188"MS35338-51ASME B18.21.150000000000000
    7/8"
    0.878"1.459"0.219"MS35338-52ASME B18.21.150000000000000
    1"
    1.003"1.656"0.250"MS35338-53ASME B18.21.130000000000000
    1 1/8"
    1.129"1.847"0.281"MS35338-54ASME B18.21.130000000000000
    1 1/4"
    1.254"2.036"0.312"MS35338-55ASME B18.21.120000000000000
    1 3/8"
    1.379"2.219"0.344"MS35338-56ASME B18.21.120000000000000
    1 1/2"
    1.504"2.419"0.375"MS35338-57ASME B18.21.110000000000000
     
    Corrosion-Resistant Cadmium-Plated Steel
    No. 2
    0.088"0.172"0.020"MS35338-39ASME B18.21.1500000000000000
    No. 4
    0.114"0.209"0.025"MS35338-40ASME B18.21.1500000000000000
    No. 6
    0.141"0.250"0.031"MS35338-41ASME B18.21.1500000000000000
    No. 8
    0.167"0.293"0.040"MS35338-42ASME B18.21.1500000000000000
    No. 10
    0.193"0.334"0.047"MS35338-43ASME B18.21.1500000000000000
    1/4"
    0.252"0.487"0.062"MS35338-44ASME B18.21.1500000000000000
    5/16"
    0.314"0.583"0.078"MS35338-45ASME B18.21.1500000000000000
    3/8"
    0.377"0.680"0.094"MS35338-46ASME B18.21.1250000000000000
    7/16"
    0.440"0.776"0.109"MS35338-47ASME B18.21.1250000000000000
    1/2"
    0.502"0.869"0.125"MS35338-48ASME B18.21.1100000000000000
    9/16"
    0.564"0.965"0.141"MS35338-49ASME B18.21.150000000000000
    5/8"
    0.628"1.073"0.156"MS35338-50ASME B18.21.120000000000000
     
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