McMaster-Carr logo
    Filter by
    Military Specification
    System of Measurement
    Screw Size
    Industrial Info Snippet
    Attribute Image
    Tooth Location
    Washer Type
    Specifications Met
    Certification
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Industrial Info Snippet
    DFARS Specialty Metals
    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)
    Help me decide (beta)
    1 Product

    Mil. Spec. Tooth Lock Washers

    These washers are manufactured and tested to strict U.S. military standards for material and construction. They resist vibration better 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.
    Internal Tooth
    Image of Product. Front orientation. Lock Washers. Mil. Spec., 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 410 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.
    For Screw
    Size
    ID
    OD
    Thk.
    Mil. Spec.
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Wear-Resistant 410 Stainless Steel
    No. 4
    		0.115"0.270"0.015" to 0.019"MS35333-70, NASM35333ASME B18.21.12596551A550000000
    Mil. Spec. Internal-Tooth Lock Washer for Number 4 Screw Size, 410 Stainless Steel, MS35333-70
    $10.80 per pack of 25 /
    $0.43 per piece
    Pack of 25In stock
     
    back to top