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    58 Products

    Electrical-Insulating Unthreaded Spacers

    Image of Product. Front orientation. Spacers. Electrical-Insulating Unthreaded Spacers.
    Stop electrical current in its tracks—these nonconductive spacers prevent it from passing through your components. They’re often used to insulate circuit boards and enclosures.
    Ultra-High-Temperature Grade L5 Ceramic—Our most heat-resistant spacers, even at blistering temperatures up to 1700° F. However, they may crack or dent if subjected to hard bumps and vibrations.
    Lg.
    For Screw
    Size
    ID
    Dielectric Strength,
    V/mil
    Temp. Range,
    ° F
    Pkg.
    Qty.
    Pkg.
    Ultra-High-Temperature Grade L5 Ceramic
     
    1/4" OD
    3/16"No. 3
    		0.115"27550 to 1,700100000000000000
    1/4"No. 3
    		0.115"27550 to 1,70010000000000000
    3/8"No. 3
    		0.115"27550 to 1,70010000000000000
     

    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.
    High-Temperature 321 Stainless Steel—The best stainless steel for high-temperature applications. These washers won't deform or lose strength when exposed to high heat up to 1500° F. They resist corrosion from mild cleaners, such as ammonia and acetone, but they can't withstand salt water or 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. 3
    		0.102"0.180"0.015" to 0.018"—NAS620C3L500000000000000000
    No. 3
    		0.102"0.180"0.030" to 0.034"—NAS620C350000000000000000
    No. 3
    		0.105"0.250"0.014" to 0.018"AN960-C3LNAS1149-CN316R50000000000000000
    No. 3
    		0.105"0.250"0.028" to 0.036"AN960-C3NAS1149-CN332R50000000000000000
    No. 3
    		0.109"0.219"0.022" to 0.028"MS51496P64—100000000000000
     
    High-Temperature 321 Stainless Steel
    No. 3
    		0.119"0.250"0.014" to 0.018"MS9549-04—10000000000000000
    No. 3
    		0.119"0.250"0.026" to 0.036"MS9321-04—5000000000000000
     
    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. 3
    		0.102"0.180"0.015" to 0.017"—NAS620-3L250000000000000
    No. 3
    		0.102"0.180"0.031" to 0.033"—NAS620-3250000000000000
    No. 3
    		0.125"0.250"0.017" to 0.028"MS27183-3—1000000000000000
     
    AluminumAbout Aluminum
    Image of Product. Front orientation. Washers. Mil. Spec. Washers.
    One-third the weight of steel, these washers are commonly used in robotics, automation, and other applications that have weight limits. They're an alternative to stainless steel for rust resistance.
    High-Strength 2024 Aluminum—The strongest aluminum washers we offer, these are comparable in strength to steel.
    High-Strength Zinc-Yellow-Chromate-Plated 2024 Aluminum—A winning combination of strength and corrosion resistance. These washers are as strong as steel and withstand rust better than unplated 2024 aluminum.
    For Screw
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    ID
    OD
    Thk.
    Mil.
    Spec.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    High-Strength 2024 Aluminum
    No. 3
    		0.105"0.250"0.013" to 0.019"AN960-D3LNAS1149-DN316H100000000000000000
    No. 3
    		0.105"0.250"0.028" to 0.036"AN960-D3NAS1149-DN332H10000000000000000
     
    High-Strength Zinc-Yellow-Chromate-Plated 2024 Aluminum
    No. 3
    		0.105"0.250"0.013" to 0.019"AN960-JD3LNAS1149-DN316J10000000000000000
    No. 3
    		0.105"0.250"0.028" to 0.036"AN960-JD3NAS1149-DN332J10000000000000000
     
    Brass
    Image of Product. Front orientation. Washers. Mil. Spec. 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
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    ID
    OD
    Thk.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Brass
    No. 3
    		0.105"0.250"0.013" to 0.019"NAS1149-BN316H50000000000000000
     

    Self-Retaining Washers

    Image of Product. Front orientation. Contains Annotated. Washers. Self-Retaining Washers.
    Save time by assembling screws and washers in advance. The tabs on these washers grip the screw shank, so they won't slip off, even when fastening upside down or at odd angles. They take the pressure off screws and nuts to protect mounting surfaces.
    Flexible Polyethylene—Softer and more flexible than other washers, these are a good choice when your mounting surface is slightly uneven. They also withstand vibration and movement without cracking.
    Temp.
    Range, ° F
    For Screw
    Size
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    OD
    Thk.
    Min.
    Max.
    Choose a Color
    Pkg.
    Qty.
    Pkg.
    Flexible Polyethylene
    No. 3, M2.5
    		0.106"0.256"0.037" to 0.049"35145
    Blue
    ,
    Gray
    ,
    Red
    		100000000000000000
     

    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.
    Acid-Resistant PVC—A great choice for chemical-processing lines, these washers won't degrade when exposed to harsh acids, alkalis, and alcohols. They are also good electrical insulators.
    Chemical-Resistant High-Temperature PTFE—The most chemical-resistant plastic washers we offer, these stand up to the widest range of harsh acids, bases, solvents, and corrosive cleaners, even at temperatures up to 500° F. Their slippery surface reduces friction between the washer, fastener, and mounting surface to prevent sticking when tightening and loosening. They are also good electrical insulators.
    Extreme-Temperature Polyimide—Our most temperature-resilient plastic washers. These won't deform or lose strength at temperatures as low as -450° F and as high as 750° F to handle everything from liquid nitrogen to heating elements. They are also good electrical insulators.
    Temp.
    Range, ° F
    For Screw
    Size
    ID
    OD
    Thk.
    Min.
    Max.
    Specs. Met
    Choose a Color
    Pkg.
    Qty.
    Pkg.
    Nylon
    No. 3
    		0.109"0.219"0.022" to 0.028"-40300ASME B18.22.1Off-White50000000000000000
    No. 3
    		0.109"0.312"0.026" to 0.038"-40180—
    Black
    ,
    Off-White
    		500000000000000
     
    Moisture-Resistant Delrin® Acetal
    No. 3
    		0.105"0.250"0.024" to 0.036"-40180—White5000000000000000
     
    Acid-Resistant PVC
    No. 3
    		0.109"0.250"0.025" to 0.035"Not Rated140—Gray10000000000000000
     
    Chemical-Resistant High-Temperature PTFE
    No. 3
    		0.116"0.250"0.027" to 0.035"Not Rated500—White100000000000000
     
    Extreme-Temperature Polyimide
    No. 3
    		0.101"0.250"0.005" to 0.006"-420450—Orange100000000000000
     

    General Purpose Washers

    Image of Product. Front orientation. Washers. 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
    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.
    Highly-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.
    High-Strength 17-7 PH Stainless Steel—Some of the strongest stainless steel washers we offer, these are comparable to high-strength Grade 8 steel. They won’t rust in wet and outdoor environments, but they can’t handle the harsh chemicals that 316 stainless steel can.
    For Screw
    Size
    ID
    OD
    Thk.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    No. 3
    		0.109"0.250"0.01" to 0.04"10000000000000000
     
    Black-Oxide 18-8 Stainless Steel
    No. 3
    		0.109"0.250"0.010" to 0.040"5000000000000000
     
    Highly-Corrosion-Resistant 316 Stainless Steel
    No. 3
    		0.109"0.250"0.01" to 0.04"1000000000000000
     
    High-Strength 17-7 PH Stainless Steel
    No. 3
    		0.109"0.281"0.018" to 0.032"1000000000000000
     
    Brass
    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.
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Brass
    No. 3
    		0.101"0.250"0.013" to 0.027"ASTM B3610000000000000000
     

    Wave Spring Lock Washers

    Image of Product. Front orientation. Lock Washers. Wave Washer, Spring Lock Washer.
    The wavy shape flexes like a spring to keep nuts and screws secure on slightly uneven surfaces. These washers add a small amount of tension to stop fasteners from backing out due to mild vibration. While they don't hold as well as other lock washers, they do grip slightly better than curved washers. They work best in electrical panels, light fixtures, and other light duty assemblies. Since these washers hold their shape when untightened, you can reuse them a handful of times without losing strength.
    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.
    3 Wave—More points of contact than single-wave washers for a better grip.
    For Screw
    Size
    No. of
    Waves
    ID
    OD
    Thk.
    Overall
    Ht.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    No. 3
    		30.102"0.195"0.005"0.017"1000000000000000
     

    SAE Washers

    Image of Product. Front orientation. Washers. SAE Washers.
    Originally designed for the automotive industry, these washers conform to SAE sizing standards. They generally have smaller diameters than USS washers to fit in cramped spots and are thinner to create more precise gaps. Washers distribute pressure under screws and nuts to protect your mounting surface.
    Stainless SteelAbout Stainless Steel
    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.
    Highly-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. 3
    		0.109"0.250"0.025" to 0.040"100000000000000000
     
    Black-Oxide 18-8 Stainless Steel
    No. 3
    		0.109"0.250"0.025" to 0.040"10000000000000000
     
    Highly-Corrosion-Resistant 316 Stainless Steel
    No. 3
    		0.109"0.250"0.025" to 0.040"10000000000000000
     
    Steel
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    Steel—Best for dry environments since moisture will cause these washers to rust.
    Pkg. of 100
    Pkg. of 1400
    For Screw
    Size
    ID
    OD
    Thk.
    Pkg.
    Pkg.
    Zinc-Plated Steel
    No. 3
    		0.109"0.250"0.005" to 0.030"00000000000000000000000000000
     
    Steel
    No. 3
    		0.109"0.250"0.005" to 0.030"0000000000000———0
     
    AluminumAbout Aluminum
    One-third the weight of steel, these washers are commonly used in robotics, automation, and other applications that have weight limits. They're an alternative to stainless steel for rust resistance, but aren't as strong.
    For Screw
    Size
    ID
    OD
    Thk.
    Pkg.
    Qty.
    Pkg.
    Aluminum
    No. 3
    		0.109"0.250"0.025" to 0.040"10000000000000000
     
    Brass
    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. 3
    		0.109"0.250"0.025" to 0.040"10000000000000000
     
    Copper
    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.
    Pkg.
    Qty.
    Pkg.
    Copper
    No. 3
    		0.109"0.250"0.025" to 0.040"100000000000000000
     

    Extra-High-Temperature Mica Washers

    Image of Product. Front orientation. Washers. Extra-High-Temperature Mica Washers.
    These washers won't melt, stick, or become brittle, even when exposed to temperatures as high as 1050° F. They make excellent insulators and are often used to secure electrical connections in transformers. Mica can chip and flake due to wear, however, so these washers are not recommended for high-vibration applications.
    Temp.
    Range
    For Screw
    Size
    ID
    OD
    Thk.
    Min.
    Max.,
    ° F
    Color
    Pkg.
    Qty.
    Pkg.
    No. 3
    		0.109"0.312"0.004" to 0.006"Not Rated1,050Beige500000000000000

    Clipped Washers

    Image of Product. Front orientation. Contains Annotated. Washers. Clipped Washers.
    Clipped on one side, these washers fit in tight spots where your typical round washers can't. Position them against a flat edge, and they won't rotate out of place as you tighten. Washers take the pressure off screws and nuts to protect mounting surfaces.
    Stainless SteelAbout Stainless Steel
    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.
    For Screw
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    ID
    OD
    Clipped
    Wd.
    Thk.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    No. 3
    		0.109"0.218"0.190"0.022" to 0.028"10000000000000000
     

    Tooth Lock Washers

    Grip tighter than split lock washers to prevent nuts and screws from loosening in applications with constant movement, such as conveyors. Tooth lock washers typically can't be reused because the teeth often get bent when tightened.
    External Tooth
    Image of Product. Front orientation. Lock Washers. Tooth Washer, External Tooth.
    Teeth on the outside edge bite into both the fastener and the mating surface for a stronger hold than internal-tooth lock washers. However, they may mar your material and snag on objects. Pair these washers with nuts and screws that are large enough to make contact with the teeth, such as pan, button, and binding head screws.
    Wear-Resistant 400 Series Stainless Steel—These grip hard material better than other types of stainless steel. They are not as corrosion resistant as 18-8 and 316 stainless steel, so they are best for environments that experience occasional moisture.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    Highly-Corrosion-Resistant Phosphor Bronze—Stronger and more wear resistant than silicon bronze, but with the same excellent corrosion resistance. These washers won't rust or deteriorate when submerged in salt water, so they're a good fit for marine environments.
    For Screw
    Size
    ID
    OD
    Thk.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Wear-Resistant 400 Series Stainless Steel
    No. 3
    		0.102"0.235"0.010" to 0.016"ASME B18.21.110000000000000000
     
    Zinc-Plated Steel
    No. 3
    		0.102"0.235"0.010" to 0.016"ASME B18.21.11000000000000000
     
    Highly-Corrosion-Resistant Phosphor Bronze
    No. 3
    		0.102"0.235"0.010" to 0.016"ASME B18.21.11000000000000000
     
    Internal Tooth
    Image of Product. Front orientation. Lock Washers. Tooth Washer, Internal Tooth.
    Internal teeth dig into the nut or screw to prevent it from backing out. Unlike external-tooth lock washers, these have a smooth outside edge, so they are less likely to mar your material or snag on objects. However, they don’t grip quite as well. Pair them with fasteners that have small diameters, such as fillister and cheese head screws.
    Wear-Resistant 400 Series Stainless Steel—These grip hard material better than other types of stainless steel. They are not as corrosion resistant as 18-8 and 316 stainless steel, so they are best for environments that experience occasional moisture.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    Highly-Corrosion-Resistant Phosphor Bronze—Stronger and more wear resistant than silicon bronze, but with the same excellent corrosion resistance. These washers won't rust or deteriorate when submerged in salt water, so they're a good fit for marine environments.
    For Screw
    Size
    ID
    OD
    Thk.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Wear-Resistant 400 Series Stainless Steel
    No. 3
    		0.102"0.232"0.010" to 0.016"ASME B18.21.110000000000000000
     
    Zinc-Plated Steel
    No. 3
    		0.102"0.232"0.010" to 0.016"ASME B18.21.11000000000000000
     
    Highly-Corrosion-Resistant Phosphor Bronze
    No. 3
    		0.109"0.232"0.010" to 0.016"ASME B18.21.11000000000000000
     

    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. 3
    		0.105"0.250"0.024" to 0.038"Not Rated280MIL-I-24768/27Light Green1000000000000000

    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.
    Highly-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.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    Highly-Corrosion-Resistant Silicon Bronze—The choice for marine environments, these washers won't rust or deteriorate when submerged in salt water. They resist corrosion as well as 316 stainless steel, but are not quite as strong.
    Pkg. of 100
    Pkg. of 1000
    For Screw
    Size
    ID
    OD
    Thk.
    Specs. Met
    Pkg.
    Pkg.
    18-8 Stainless Steel
    No. 3
    		0.107"0.195"0.025"ASME B18.21.100000000000000000000000000000
     
    Highly-Corrosion-Resistant 316 Stainless Steel
    No. 3
    		0.107"0.195"0.025"ASME B18.21.10000000000000———0
     
    Zinc-Plated Steel
    No. 3
    		0.107"0.195"0.025"ASME B18.21.1000000000000000000000000000
     
    Highly-Corrosion-Resistant Silicon Bronze
    No. 3
    		0.107"0.195"0.025"ASME B18.21.10000000000000———0
     

    Oversized Washers

    Image of Product. Front orientation. Washers. 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
    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.
    Highly-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. 3
    		0.109"0.312"0.050" to 0.080"100000000000000000
     
    Black-Oxide 18-8 Stainless Steel
    No. 3
    		0.109"0.312"0.050" to 0.080"5000000000000000
     
    Highly-Corrosion-Resistant 316 Stainless Steel
    No. 3
    		0.109"0.312"0.050" to 0.080"5000000000000000
     
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