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)
    3 Products

    Sealing Washers

    Prevent leaks while distributing weight evenly under nuts and screws. These washers compress as you tighten to keep air and fluid in, and dust and contaminants out. Use them anywhere you need a tight seal, such as protecting electronics from moisture or keeping lubricants contained in machinery.
    Metal
    Image of Product. Front orientation. Sealing Washers. Metal.
    Also known as crush washers, these are made of soft metal that deforms under pressure to fill gaps around the nut or screw. Often found in oil drain valves, they withstand stress and wear better than plastic and rubber washers, but aren't as leak-resistant. Metal sealing washers are not reusable.
    Copper—Softer than aluminum washers, these deform easily to create a tight seal with less effort. They resist rusting in corrosive environments, but will develop a green patina over time.
    Cellulose-Filled Copper—The easiest washers to crush. These washers are embedded with cellulose, which makes them more flexible than other metal washers for a tighter seal. They resist rusting in corrosive environments, but will develop a green patina over time.
    For Screw
    Size
    ID,
    mm
    OD,
    mm
    Thk., mm
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Copper
    M38
    		38.30043.9001.8 to 2.2DIN 76031000000000000000
     
    Cellulose-Filled Copper
    M38
    		38.30043.9002.3 to 2.7DIN 7603500000000000000
     

    Bearing Spring Lock Washers for Slotted Bearing Nuts

    Image of System. Front orientation. Contains Annotated. For Stepped Nuts. Bearing Spring Lock Washers for Slotted Bearing Nuts.
    Image of Attribute. Front orientation. Contains MultipleImages. For Stepped Nuts.

    For Stepped Nuts

    Designed for use with bearing nuts, these lock washers have a conical shape that presses like a spring against bearings, bushings, gears, and pulleys to hold them in place on your threaded shaft or spindle. They also have an inner tab that sits in the shaft or spindle’s keyway to prevent the nut from loosening.
    Steel—Steel washers are strong and flexible.
    DIN 462—DIN 462 and DIN 5406 washers meet international standards for lock washer dimensions. Pair DIN 462 washers with DIN 1804 bearing nuts, and DIN 5406 washers with DIN 981 bearing nuts.
    Tab,
    mm
    For Screw
    Size
    ID,
    mm
    OD,
    mm
    Thk.,
    mm
    Wd.
    Dp.
    Overall
    Ht., mm
    Hardness
    Specs.
    Met
    For Bearing
    Nut Specs. Met
    Each
    For Stepped Nuts
     
    Steel
    M38
    		38.00058.0001.2008.0002.5005.000Not RatedDIN 462DIN 180400000000000000
     
    back to top