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    30 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.
    Stainless SteelAbout Stainless Steel
    Image of Product. Front orientation. Washers. Mil. Spec. Washers.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these washers resist rust. However, they won'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 resist rust in wet and outdoor environments, but won't hold up to harsh chemicals as well as 316 stainless steel.
    For Screw
    Size
    ID
    OD
    Thk.
    Mil. Spec.
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    No. 1
    		0.078"0.188"0.016" to 0.025"MS15795-801NASM1579550098019A395000000
    No. 1
    		0.099"0.140"0.010" to 0.013"MS51496P79—2598019A21300000
    No. 1
    		0.099"0.161"0.022" to 0.028"MS51496P63—2598019A23600000
     
    Black-Oxide 18-8 Stainless Steel
    No. 1
    		0.078"0.188"0.016" to 0.025"MS15795-801BNASM1579510090618A11100000
     
    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
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    ID
    OD
    Thk.
    Mil.
    Spec.
    Pkg.
    Qty.
    Pkg.
    Low-Friction Cadmium-Plated Steel
    No. 1
    		0.078"0.188"0.016" to 0.025"MS27183-110098032A41300000
     
    Copper
    Image of Product. Front orientation. Washers. Mil. Spec. Washers.
    These have the best conductivity of all our metal washers. They're often used to secure electrical connections inside breaker panels and to fasten components on printed circuit boards. They're also the softest of all our metal washers, so they won't damage screws and nuts. However, copper washers aren't as corrosion resistant as brass washers, and will develop a green patina over time.
    For Screw
    Size
    ID
    OD
    Thk.
    Mil. Spec.
    Pkg.
    Qty.
    Pkg.
    Copper
    No. 1
    		0.078"0.188"0.016" to 0.025"MS15795-50110097565A111000000
     
    Nickel
    Image of Product. Front orientation. Washers. Mil. Spec. Washers.
    Super-Corrosion-Resistant 400 Nickel—Commonly found in the oil and gas industries, these washers have similar strength to 316 stainless steel, but are more corrosion resistant to stand up to salt water and harsh acids. They're often used as a high-strength alternative to titanium. Also known as Monel.
    For Screw
    Size
    ID
    OD
    Thk.
    Mil. Spec.
    Pkg.
    Qty.
    Pkg.
    Super-Corrosion-Resistant 400 Nickel
    No. 1
    		0.078"0.188"0.016" to 0.025"MS15795-4012597168A111000000
     

    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.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these washers resist rust. However, they won'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 resist rust in wet and outdoor environments, but won't hold up to harsh chemicals as well as 316 stainless steel.
    Super-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these washers won't degrade when exposed to harsh weather, salt water, and most chemicals.
    For Screw
    Size
    ID
    OD
    Thk.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    No. 1
    		0.080"0.156"0.010" to 0.020"5092141A21100000
     
    Black-Oxide 18-8 Stainless Steel
    No. 1
    		0.080"0.156"0.010" to 0.020"5096765A21900000
     
    Super-Corrosion-Resistant 316 Stainless Steel
    No. 1
    		0.080"0.156"0.010" to 0.020"5090107A12600000
     
    Steel
    Image of Product. Front orientation. Washers. General Purpose Washers.
    Black-Oxide Steel—Typically chosen for their appearance, these washers have a dark, matte coating that creates a finished look. They offer minimal corrosion resistance, so they're best for dry environments.
    For Screw
    Size
    ID
    OD
    Thk.
    Pkg.
    Qty.
    Pkg.
    Black-Oxide Steel
    No. 1
    		0.078"0.156"0.005" to 0.024"2598029A022000000
     
    Brass
    Image of Product. Front orientation. Washers. General Purpose Washers.
    Softer than most metals, brass washers won't damage other fastening components.
    Brass—With a warm, polished look, these washers are often chosen for their appearance. Similar to 18-8 stainless steel, brass is corrosion resistant enough to stand up to wet environments.
    For Screw
    Size
    ID
    OD
    Thk.
    Pkg.
    Qty.
    Pkg.
    Brass
    No. 1
    		0.078"0.156"0.005" to 0.024"2595395A10200000
     

    Mil. Spec. Plastic Washers

    Image of Product. Front orientation. Washers. Mil. Spec. Plastic Washers.
    These washers are manufactured and tested to strict U.S. military standards for material and construction. They are lightweight, nonconductive, and naturally rust resistant. Commonly used in electronics and automation applications, they take the pressure off screws and nuts to protect mounting surfaces.
    Nylon—The most popular plastic washers, these are strong, durable, and economical. Nylon will swell and weaken when exposed to moisture, so these washers are best for dry environments.
    Temp.
    Range
    For Screw
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    ID
    OD
    Thk.
    Min.
    Max.,
    ° F
    Mil.
    Spec.
    Color
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    Qty.
    Pkg.
    Nylon
    No. 1
    		0.079"0.162"0.016" to 0.024"Not Rated180MS51859-12White5092150A212000000
     

    Plastic Washers

    Image of Product. Front orientation. Washers. Plastic Washers.
    All of these washers are lightweight, nonconductive, and naturally rust resistant. They are commonly used in electronics and automation applications to take the pressure off screws and nuts and protect mounting surfaces.
    Nylon—The most popular plastic washers, these are strong, durable, and economical. Nylon will swell and weaken when exposed to moisture, so these washers are best for dry environments.
    Moisture-Resistant Delrin® Acetal—The best plastic for damp and wet environments, these washers won't swell or lose their strength if exposed to moisture.
    Temp.
    Range, ° F
    For Screw
    Size
    ID
    OD
    Thk.
    Min.
    Max.
    Choose a Color
    Pkg.
    Qty.
    Pkg.
    Nylon
    No. 1
    		0.084"0.219"0.020" to 0.030"-40180
    Black
    ,
    Off-White
    		5090295A31400000
     
    Moisture-Resistant Delrin® Acetal
    No. 1
    		0.094"0.250"0.012" to 0.018"-40180White5095647A20300000
     

    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.
    Stainless SteelAbout Stainless Steel
    Image of Product. Front orientation. Washers. Oversized Washers.
    Black-Oxide 18-8 Stainless Steel—Typically chosen for their appearance, these washers have a dark, matte coating to create a finished look. They resist rust in wet and outdoor environments, but won't hold up to harsh chemicals as well as 316 stainless steel.
    Super-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these washers won't degrade when exposed to harsh weather, salt water, and most chemicals.
    For Screw
    Size
    ID
    OD
    Thk.
    Pkg.
    Qty.
    Pkg.
    Black-Oxide 18-8 Stainless Steel
    No. 1
    		0.080"0.188"0.040" to 0.060"5090377A133000000
     
    Super-Corrosion-Resistant 316 Stainless Steel
    No. 1
    		0.080"0.188"0.040" to 0.060"5091525A31100000
     
    Brass
    Image of Product. Front orientation. Washers. Oversized Washers.
    Softer than most metals, brass washers won't damage other fastening components.
    Brass—With a warm, polished look, these washers are often chosen for their appearance. Similar to 18-8 stainless steel, brass is corrosion resistant enough to stand up to wet environments.
    For Screw
    Size
    ID
    OD
    Thk.
    Pkg.
    Qty.
    Pkg.
    Brass
    No. 1
    		0.080"0.156"0.010" to 0.020"5092916A30000000
     

    ASME Washers

    Also known as Type B washers, these meet ASME sizing standards. They take the pressure off screws and nuts to protect your mounting surface.
    Stainless SteelAbout Stainless Steel
    Image of Product. Front orientation. Washers. ASME Washers.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these washers resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
    Super-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these washers won't degrade when exposed to harsh weather, salt water, and most chemicals.
    For Screw
    Size
    ASME
    Designation
    ID
    OD
    Thk.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    No. 1
    		Narrow0.084"0.156"0.022" to 0.028"ASME B18.21.11092217A10000000
    No. 1
    		Regular0.084"0.219"0.022" to 0.028"ASME B18.21.1592217A1010000
    No. 1
    		Wide0.084"0.281"0.028" to 0.036"ASME B18.21.1192217A1060000
     
    Super-Corrosion-Resistant 316 Stainless Steel
    No. 1
    		Narrow0.084"0.156"0.022" to 0.028"ASME B18.21.11092844A1140000
    No. 1
    		Regular0.084"0.219"0.022" to 0.028"ASME B18.21.1592844A1150000
    No. 1
    		Wide0.084"0.281"0.028" to 0.036"ASME B18.21.1192844A1160000
     
    Steel
    Image of Product. Front orientation. Washers. ASME Washers.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    For Screw
    Size
    ASME
    Designation
    ID
    OD
    Thk.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
    No. 1
    		Narrow0.084"0.156"0.022" to 0.028"ASME B18.21.12594744A157000000
    No. 1
    		Regular0.084"0.219"0.022" to 0.028"ASME B18.21.12594744A20100000
    No. 1
    		Wide0.084"0.281"0.028" to 0.036"ASME B18.21.12594744A22600000
     

    Split Lock Washers

    Image of Product. Front orientation. Lock Washers. Split-Lock Washer.
    Stop nuts and screws from loosening due to mild vibration. As you tighten, the uneven ends bite into the nut or screw so it won't back out. While they're not as vibration resistant 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.
    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.
    Pkg. of 100
    Pkg. of 1000
    For Screw
    Size
    ID
    OD
    Thk.
    Pkg.
    Pkg.
    18-8 Stainless Steel
    No. 1
    		0.075"0.150"0.015"92146A5150000092146A002000000
     

    Fiberglass Washers

    Image of Product. Front orientation. Washers. Fiberglass Washers.
    A lightweight alternative to stainless steel, these fiberglass washers have the best strength-to-weight ratio of all our nonmetal washers. Commonly used to distribute pressure under nuts and screws in building frames, they are a great fit when you need something more robust than plastic, but still have to stay within a certain weight limit.
    Temp.
    Range
    For Screw
    Size
    ID
    OD
    Thk.
    Min.
    Max.,
    ° F
    Mil. Spec.
    Color
    Pkg.
    Qty.
    Pkg.
    No. 1
    		0.094"0.250"0.012" to 0.018"Not Rated280MIL-I-24768/27Light Green1093493A34300000
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