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    123 Products

    Performance

    Performance

    Undersized Washers

    These washers distribute pressure evenly under fasteners with narrow heads, such as cheese and socket head screws. They have smaller diameters than general purpose washers of the same screw size.
    Stainless SteelAbout Stainless Steel
    Image of Product. Front orientation. Washers. Undersized 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,
    mm
    OD,
    mm
    Thk., mm
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    M1.6
    		1.73.50.3 to 0.4DIN 43310098689A22100000
    M2
    		2.24.50.2 to 0.4DIN 433, ISO 709210098689A1100000
    M2.5
    		2.75.00.4 to 0.6DIN 433, ISO 709210098689A1110000
    M3
    		3.26.00.4 to 0.6DIN 433, ISO 709210098689A1120000
    M3.5
    		3.77.00.5 to 0.6DIN 43310098689A2220000
    M4
    		4.38.00.4 to 0.6DIN 433, ISO 709210098689A1130000
    M5
    		5.39.00.9 to 1.1DIN 433, ISO 709210098689A1140000
    M6
    		6.411.01.4 to 1.8DIN 433, ISO 709210098689A1150000
    M8
    		8.415.01.4 to 1.8DIN 433, ISO 709210098689A1160000
    M10
    		10.518.01.4 to 1.8DIN 433, ISO 709210098689A11700000
    M12
    		13.020.01.8 to 2.2DIN 433, ISO 709210098689A11800000
    M14
    		15.024.02.3 to 2.7DIN 433, ISO 70922598689A11900000
    M16
    		17.028.02.3 to 2.7DIN 433, ISO 70922598689A12000000
    M18
    		19.030.02.3 to 2.7DIN 433198689A2230000
    M20
    		21.034.02.7 to 3.3DIN 433, ISO 70921098689A1210000
    M24
    		25.039.03.7 to 4.3DIN 433198689A2110000
     
    Black-Oxide 18-8 Stainless Steel
    M3
    		3.26.00.5 to 0.6DIN 43310098269A1210000
    M4
    		4.38.00.5 to 0.6DIN 43310098269A12300000
    M5
    		5.39.00.9 to 1.1DIN 43310098269A12400000
    M6
    		6.411.01.4 to 1.8DIN 43310098269A12500000
    M8
    		8.415.01.4 to 1.8DIN 4335098269A12600000
     
    Super-Corrosion-Resistant 316 Stainless Steel
    M2
    		2.24.50.3 to 0.4DIN 4332598690A1080000
    M2.5
    		2.75.00.5 to 0.6DIN 43310098690A1090000
    M3
    		3.26.00.4 to 0.6DIN 433, ISO 709210098690A1100000
    M4
    		4.38.00.4 to 0.6DIN 433, ISO 709210098690A1110000
    M5
    		5.39.00.9 to 1.1DIN 433, ISO 709210098690A1120000
    M6
    		6.411.01.4 to 1.8DIN 433, ISO 709210098690A1130000
    M8
    		8.415.01.4 to 1.8DIN 433, ISO 70925098690A1140000
    M10
    		10.518.01.4 to 1.8DIN 433, ISO 70925098690A1150000
    M12
    		13.020.01.8 to 2.2DIN 433, ISO 70922598690A1160000
    M14
    		15.024.02.3 to 2.7DIN 4331098690A22000000
    M16
    		17.028.02.3 to 2.7DIN 433, ISO 70921098690A1170000
    M20
    		21.034.02.7 to 3.3DIN 433, ISO 70921098690A11800000
    M24
    		25.039.03.7 to 4.3DIN 433198690A1210000
     
    Steel
    Image of Product. Front orientation. Washers. Undersized Washers.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    Zinc-Yellow-Chromate-Plated Steel—With the same corrosion resistance as zinc-plated steel, these withstand occasional exposure to moisture.
    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.
    Blue-Dyed Steel—These metric-sized washers have a distinctive blue color, so you can easily tell them apart from inch washers. The coating provides only minimal corrosion resistance, so these washers are best for dry environments.
    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.
    Black Super-Corrosion-Resistant-Coated Steel—Combines a finished appearance with the rust resistance of 316 stainless steel. The coating has been tested to extreme standards, including 1,000 hours of salt spray resistance, to hold up in wet and outdoor environments. Also known as black luster.
    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,
    mm
    OD,
    mm
    Thk., mm
    For Fastener Strength
    Grade/Class
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
    M2
    		2.24.50.2 to 0.4—DIN 433, ISO 709210098688A11000000
    M2.5
    		2.75.00.4 to 0.6—DIN 433, ISO 709210098688A1110000
    M3
    		3.26.00.4 to 0.6—DIN 433, ISO 709210098688A1120000
    M3
    		3.26.00.5 to 0.6ISO Class 8.8
    		DIN 43310098688A1740000
    M3
    		3.26.00.5 to 0.6ISO Class 10.9
    		DIN 43310098688A1490000
    M3.5
    		3.77.00.4 to 0.6—DIN 433, ISO 709210098688A1130000
    M4
    		4.38.00.4 to 0.6—DIN 433, ISO 709210098688A1140000
    M4
    		4.38.00.5 to 0.6ISO Class 8.8
    		DIN 43310098688A1750000
    M4
    		4.38.00.5 to 0.6ISO Class 10.9
    		DIN 43310098688A15100000
    M5
    		5.39.00.9 to 1.1—DIN 433, ISO 709210098688A1150000
    M5
    		5.39.00.9 to 1.1ISO Class 8.8
    		DIN 43310098688A1760000
    M5
    		5.39.00.9 to 1.1ISO Class 10.9
    		DIN 43310098688A15200000
    M6
    		6.411.01.4 to 1.8—DIN 433, ISO 709210098688A1160000
    M6
    		6.411.01.4 to 1.8ISO Class 8.8
    		DIN 43310098688A17100000
    M6
    		6.411.01.4 to 1.8ISO Class 10.9
    		DIN 4335098688A15300000
    M8
    		8.415.01.4 to 1.8—DIN 433, ISO 709210098688A1170000
    M8
    		8.415.01.4 to 1.8ISO Class 8.8
    		DIN 4335098688A17200000
    M8
    		8.415.01.4 to 1.8ISO Class 10.9
    		DIN 4332598688A1540000
    M10
    		10.518.01.4 to 1.8—DIN 433, ISO 709210098688A11800000
    M10
    		10.518.01.4 to 1.8ISO Class 8.8
    		DIN 4335098688A17300000
    M10
    		10.518.01.4 to 1.8ISO Class 10.9
    		DIN 4332598688A1550000
    M12
    		13.020.01.8 to 2.2—DIN 433, ISO 709210098688A11900000
    M12
    		13.020.01.8 to 2.2ISO Class 8.8
    		DIN 4332598688A17700000
    M12
    		13.020.01.8 to 2.2ISO Class 10.9
    		DIN 4332598688A15600000
    M14
    		15.024.02.3 to 2.7—DIN 433, ISO 70925098688A12000000
    M14
    		15.024.02.3 to 2.7ISO Class 8.8
    		DIN 4331098688A1780000
    M14
    		15.024.02.3 to 2.7ISO Class 10.9
    		DIN 4331098688A15700000
    M16
    		17.028.02.3 to 2.7—DIN 433, ISO 70922598688A1210000
    M16
    		17.028.02.3 to 2.7ISO Class 8.8
    		DIN 4331098688A17900000
    M16
    		17.028.02.3 to 2.7ISO Class 10.9
    		DIN 4331098688A1580000
    M18
    		19.030.02.3 to 2.7—DIN 433, ISO 70922598688A12200000
    M20
    		21.034.02.7 to 3.3—DIN 433, ISO 70921098688A1230000
    M20
    		21.034.02.7 to 3.3ISO Class 8.8
    		DIN 433598688A18100000
    M20
    		21.034.02.7 to 3.3ISO Class 10.9
    		DIN 433598688A1590000
    M24
    		25.039.03.7 to 4.3—DIN 433, ISO 7092598688A1240000
    M24
    		25.039.03.7 to 4.3ISO Class 8.8
    		DIN 433198688A1830000
    M24
    		25.039.03.7 to 4.3ISO Class 10.9
    		DIN 433198688A1620000
     
    Zinc-Yellow-Chromate-Plated Steel
    M4
    		4.38.00.5 to 0.6ISO Class 10.9
    		DIN 43310090483A17600000
    M5
    		5.39.00.9 to 1.1ISO Class 10.9
    		DIN 43310090483A17700000
    M6
    		6.411.01.4 to 1.8ISO Class 10.9
    		DIN 4335090483A17800000
    M8
    		8.415.01.4 to 1.8ISO Class 10.9
    		DIN 4332590483A1790000
    M10
    		10.518.01.4 to 1.8ISO Class 10.9
    		DIN 4332590483A1910000
    M12
    		13.020.01.8 to 2.2ISO Class 10.9
    		DIN 4332590483A19200000
    M14
    		15.024.02.3 to 2.7ISO Class 10.9
    		DIN 4331090483A19300000
    M16
    		17.028.02.3 to 2.7ISO Class 10.9
    		DIN 4331090483A19400000
    M20
    		21.034.02.7 to 3.3ISO Class 10.9
    		DIN 433590483A19500000
     
    Black-Oxide Steel
    M3
    		3.26.00.5 to 0.6—DIN 4331098687A3020000
    M5
    		5.39.00.9 to 1.1—DIN 4335098687A30300000
    M8
    		8.415.01.4 to 1.8—DIN 4335098687A30500000
    M10
    		10.518.01.4 to 1.8—DIN 4335098687A3110000
    M12
    		13.020.01.8 to 2.2—DIN 4332598687A3120000
    M20
    		21.034.02.7 to 3.3—DIN 4331098687A3260000
     
    Blue-Dyed Steel
    M3
    		3.06.00.4 to 0.6—DIN 4332098687A2220000
    M4
    		4.08.00.4 to 0.6—DIN 4332098687A2230000
    M5
    		5.09.00.9 to 1.1—DIN 4332098687A2240000
    M8
    		8.015.01.4 to 1.8—DIN 4332098687A2250000
     
    Steel
    M5
    		5.39.00.9 to 1.1—DIN 43310098687A1350000
    M6
    		6.411.01.4 to 1.8—DIN 43310098687A1360000
    M8
    		8.415.01.4 to 1.8—DIN 43310098687A1370000
    M10
    		10.518.01.4 to 1.8—DIN 43310098687A1380000
    M12
    		13.020.02.3 to 2.7—DIN 43310098687A13900000
    M20
    		21.034.02.7 to 3.3—DIN 4331098687A12700000
    M24
    		25.039.03.7 to 4.3—DIN 433598687A12900000
     
    Corrosion-Resistant Galvanized Steel
    M6
    		6.411.01.4 to 1.8—DIN 4331098687A4010000
    M8
    		8.415.01.4 to 1.8—DIN 4331098687A4020000
    M10
    		10.518.01.4 to 1.8—DIN 4331098687A4030000
     
    Black Super-Corrosion-Resistant-Coated Steel
    M6
    		6.411.01.4 to 1.8—DIN 433, ISO 70921093413A33500000
    M8
    		8.415.01.4 to 1.8—DIN 433, ISO 70921093413A33600000
    M10
    		10.518.01.4 to 1.8—DIN 433, ISO 70921093413A33700000
    M12
    		13.020.01.8 to 2.2—DIN 433, ISO 70921093413A33800000
     
    Brass
    Image of Product. Front orientation. Washers. Undersized 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,
    mm
    OD,
    mm
    Thk., mm
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Brass
    M1.6
    		1.73.50.2 to 0.4DIN 433, ISO 709210098691A11000000
    M2
    		2.24.50.2 to 0.4DIN 433, ISO 709210098691A1110000
    M2.5
    		2.75.00.4 to 0.6DIN 433, ISO 709210098691A1120000
    M3
    		3.26.00.4 to 0.6DIN 433, ISO 709210098691A1130000
    M4
    		4.38.00.4 to 0.6DIN 433, ISO 709210098691A1140000
    M5
    		5.39.00.9 to 1.1DIN 433, ISO 709210098691A1150000
    M6
    		6.411.01.4 to 1.8DIN 433, ISO 70925098691A1160000
    M8
    		8.415.01.4 to 1.8DIN 433, ISO 70922598691A1170000
    M10
    		10.518.01.4 to 1.8DIN 433, ISO 70922598691A11800000
    M12
    		13.020.01.8 to 2.2DIN 433, ISO 70921098691A1190000
    M14
    		15.024.02.3 to 2.8DIN 433, ISO 70921098691A12000000
    M16
    		16.028.02.3 to 2.7DIN 433, ISO 70921098691A12100000
    M20
    		21.034.02.7 to 3.3DIN 433, ISO 7092198691A1220000
     
    Copper
    Image of Product. Front orientation. Washers. Undersized 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,
    mm
    OD,
    mm
    Thk., mm
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Copper
    M6
    		6.411.01.4 to 1.8DIN 4332598044A324000000
    M8
    		8.415.01.4 to 1.8DIN 4331098044A32800000
     

    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.
    Clear Impact-Resistant Polycarbonate—Withstand bumps and vibration without cracking or denting. These washers are also clear to be less noticeable in your assembly.
    Temp.
    Range, ° F
    For Screw
    Size
    ID,
    mm
    OD,
    mm
    Thk., mm
    Min.
    Max.
    Specs.
    Met
    Color
    Pkg.
    Qty.
    Pkg.
    Nylon
    M8
    		8.415.01.5 to 1.7-40220DIN 433Off-White2595610A111000000
    M10
    		10.518.01.4 to 1.8-40220DIN 433Off-White2595610A11800000
    M12
    		13.020.01.8 to 2.2-40220DIN 433Off-White1095610A1210000
     
    Clear Impact-Resistant Polycarbonate
    M3
    		3.26.00.5 to 0.6-40220DIN 433Clear2590940A1030000
     
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