McMaster-Carr logo
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    23 Products

    Performance

    Washer Designation

    Washer Designation

    General Purpose Washers

    Your go-to metal washer for every screw size. Washers take the pressure off nuts and screws to protect mounting surfaces.
    Titanium
    Image of Product. Front orientation. Washers. General Purpose Washers.
    Image of Specification. Front orientation. Washers. General Purpose Washers.
    The best of both worlds, these washers are lightweight like aluminum and more corrosion resistant than 316 stainless steel.
    Ultra-Corrosion-Resistant Grade 2 Titanium—Because Grade 2 titanium is 99% pure, it's even more corrosion resistant than other common titanium grades, such as Grades 5 and 9. These washers are ideal for use in chemical-processing facilities since they stand up to strong acids and other harsh chemicals.
    High-Strength Ultra-Corrosion-Resistant Grade 5 Titanium—More than two times stronger than Grade 2 titanium due to the addition of aluminum and vanadium. These washers also stand up to salt water, acids, and chemicals but won’t resist harsh chemicals like Grade 2 can.
    Material Certificate—Washers include a report with a traceable lot number.
    For Screw
    Size
    ID
    OD
    Thk.
    Certificate Type
    Pkg.
    Qty.
    Pkg.
    Ultra-Corrosion-Resistant Grade 2 Titanium
    No. 2
    		0.090"0.180"0.022" to 0.028"—194051A204000000
    No. 4
    		0.125"0.375"0.030" to 0.045"—194051A2060000
    No. 6
    		0.144"0.500"0.036" to 0.045"—594051A2080000
    No. 8
    		0.188"0.625"0.036" to 0.045"—594051A2090000
    No. 10
    		0.203"0.750"0.036" to 0.045"—594051A2100000
    1/4"
    		0.265"0.750"0.036" to 0.045"—194051A2200000
    5/16"
    		0.344"1.000"0.046" to 0.055"—194051A2290000
    3/8"
    		0.406"1.000"0.056" to 0.071"—194051A2300000
    1/2"
    		0.531"1.062"0.074" to 0.121"—194051A2310000
    3/4"
    		0.812"1.500"0.108" to 0.160"—194051A23200000
     
    High-Strength Ultra-Corrosion-Resistant Grade 5 Titanium
    No. 10
    		0.203"0.750"0.036" to 0.045"Material Certificate
    		591449A1240000
    1/4"
    		0.265"0.750"0.036" to 0.045"Material Certificate
    		591449A1250000
    5/16"
    		0.344"1.000"0.046" to 0.055"Material Certificate
    		191449A1260000
    3/8"
    		0.406"1.000"0.056" to 0.071"Material Certificate
    		191449A1270000
    1/2"
    		0.531"1.062"0.074" to 0.121"Material Certificate
    		191449A1280000
    M6
    		6.4 mm12.0 mm1.4 mm to 1.8 mmMaterial Certificate
    		591449A5230000
    M8
    		8.4 mm16.0 mm1.4 mm to 1.8 mmMaterial Certificate
    		591449A5240000
    M10
    		10.5 mm20.0 mm1.8 mm to 2.2 mmMaterial Certificate
    		191449A5250000
     

    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.
    Titanium
    The best of both worlds, these washers are lightweight like aluminum and more corrosion resistant than 316 stainless steel.
    Ultra-Corrosion-Resistant Grade 2 Titanium—Because Grade 2 titanium is 99% pure, it's even more corrosion resistant than other common titanium grades, such as Grades 5 and 9. These washers are ideal for use in chemical-processing facilities since they stand up to strong acids and other harsh chemicals.
    For Screw
    Size
    ID
    OD
    Thk.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Ultra-Corrosion-Resistant Grade 2 Titanium
    No. 8
    		0.188"0.438"0.036" to 0.065"ASME B18.21.1190470A11000000
    No. 10
    		0.219"0.500"0.036" to 0.065"ASME B18.21.1190470A1200000
    5/16"
    		0.344"0.688"0.051" to 0.080"ASME B18.21.1190470A1300000
    3/8"
    		0.406"0.812"0.051" to 0.080"ASME B18.21.1190470A1400000
     

    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.
    Titanium
    Image of Product. Front orientation. Washers. ASME Washers.
    The best of both worlds, these washers are lightweight like aluminum and more corrosion resistant than 316 stainless steel.
    Ultra-Corrosion-Resistant Grade 2 Titanium—Because Grade 2 titanium is 99% pure, it's even more corrosion resistant than other common titanium grades, such as Grades 5 and 9. These washers are ideal for use in chemical-processing facilities since they stand up to strong acids and other harsh chemicals.
    For Screw
    Size
    ASME
    Designation
    ID
    OD
    Thk.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Ultra-Corrosion-Resistant Grade 2 Titanium
    1/4"
    		Wide0.281"1.000"0.051" to 0.080"ASME B18.21.1190474A18700000
     
    back to top