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    53 Products

    Undersized Washers

    Image of Product. Front orientation. Washers. 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
    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
    ID,
    mm
    OD,
    mm
    Thk., mm
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    M2
    		2.24.50.2 to 0.4DIN 433, ISO 709210000000000000000
    M2.5
    		2.75.00.4 to 0.6DIN 433, ISO 70921000000000000000
    M3
    		3.26.00.4 to 0.6DIN 433, ISO 70921000000000000000
    M4
    		4.38.00.4 to 0.6DIN 433, ISO 70921000000000000000
    M5
    		5.39.00.9 to 1.1DIN 433, ISO 70921000000000000000
    M6
    		6.411.01.4 to 1.8DIN 433, ISO 70921000000000000000
    M8
    		8.415.01.4 to 1.8DIN 433, ISO 70921000000000000000
    M10
    		10.518.01.4 to 1.8DIN 433, ISO 709210000000000000000
    M12
    		13.020.01.8 to 2.2DIN 433, ISO 709210000000000000000
    M14
    		15.024.02.3 to 2.7DIN 433, ISO 70922500000000000000
    M16
    		17.028.02.3 to 2.7DIN 433, ISO 70922500000000000000
    M20
    		21.034.02.7 to 3.3DIN 433, ISO 7092100000000000000
     
    Super-Corrosion-Resistant 316 Stainless Steel
    M3
    		3.26.00.4 to 0.6DIN 433, ISO 70921000000000000000
    M4
    		4.38.00.4 to 0.6DIN 433, ISO 70921000000000000000
    M5
    		5.39.00.9 to 1.1DIN 433, ISO 70921000000000000000
    M6
    		6.411.01.4 to 1.8DIN 433, ISO 70921000000000000000
    M8
    		8.415.01.4 to 1.8DIN 433, ISO 7092500000000000000
    M10
    		10.518.01.4 to 1.8DIN 433, ISO 7092500000000000000
    M12
    		13.020.01.8 to 2.2DIN 433, ISO 7092250000000000000
    M16
    		17.028.02.3 to 2.7DIN 433, ISO 7092100000000000000
    M20
    		21.034.02.7 to 3.3DIN 433, ISO 70921000000000000000
     
    Steel
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    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 Screw
    Size
    ID,
    mm
    OD,
    mm
    Thk., mm
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
    M2
    		2.24.50.2 to 0.4DIN 433, ISO 709210000000000000000
    M2.5
    		2.75.00.4 to 0.6DIN 433, ISO 70921000000000000000
    M3
    		3.26.00.4 to 0.6DIN 433, ISO 70921000000000000000
    M3.5
    		3.77.00.4 to 0.6DIN 433, ISO 70921000000000000000
    M4
    		4.38.00.4 to 0.6DIN 433, ISO 70921000000000000000
    M5
    		5.39.00.9 to 1.1DIN 433, ISO 70921000000000000000
    M6
    		6.411.01.4 to 1.8DIN 433, ISO 70921000000000000000
    M8
    		8.415.01.4 to 1.8DIN 433, ISO 70921000000000000000
    M10
    		10.518.01.4 to 1.8DIN 433, ISO 709210000000000000000
    M12
    		13.020.01.8 to 2.2DIN 433, ISO 709210000000000000000
    M14
    		15.024.02.3 to 2.7DIN 433, ISO 70925000000000000000
    M16
    		17.028.02.3 to 2.7DIN 433, ISO 7092250000000000000
    M18
    		19.030.02.3 to 2.7DIN 433, ISO 70922500000000000000
    M20
    		21.034.02.7 to 3.3DIN 433, ISO 7092100000000000000
    M24
    		25.039.03.7 to 4.3DIN 433, ISO 709250000000000000
     
    Black Super-Corrosion-Resistant-Coated Steel
    M6
    		6.411.01.4 to 1.8DIN 433, ISO 70921000000000000000
    M8
    		8.415.01.4 to 1.8DIN 433, ISO 70921000000000000000
    M10
    		10.518.01.4 to 1.8DIN 433, ISO 70921000000000000000
    M12
    		13.020.01.8 to 2.2DIN 433, ISO 70921000000000000000
     
    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,
    mm
    OD,
    mm
    Thk., mm
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Brass
    M1.6
    		1.73.50.2 to 0.4DIN 433, ISO 709210000000000000000
    M2
    		2.24.50.2 to 0.4DIN 433, ISO 70921000000000000000
    M2.5
    		2.75.00.4 to 0.6DIN 433, ISO 70921000000000000000
    M3
    		3.26.00.4 to 0.6DIN 433, ISO 70921000000000000000
    M4
    		4.38.00.4 to 0.6DIN 433, ISO 70921000000000000000
    M5
    		5.39.00.9 to 1.1DIN 433, ISO 70921000000000000000
    M6
    		6.411.01.4 to 1.8DIN 433, ISO 7092500000000000000
    M8
    		8.415.01.4 to 1.8DIN 433, ISO 7092250000000000000
    M10
    		10.518.01.4 to 1.8DIN 433, ISO 70922500000000000000
    M12
    		13.020.01.8 to 2.2DIN 433, ISO 7092100000000000000
    M14
    		15.024.02.3 to 2.8DIN 433, ISO 70921000000000000000
    M16
    		16.028.02.3 to 2.7DIN 433, ISO 70921000000000000000
    M20
    		21.034.02.7 to 3.3DIN 433, ISO 709210000000000000
     
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