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)
    7 Products

    Insulating Sleeve Washers

    Cover screw threads to stop electrical current in its tracks and prevent short circuits. These washers create a barrier between the screw threads and the mating surface when mounted in through holes. This barrier also extends the life of your assembly by preventing galvanic corrosion, which is when two different metals rust more quickly due to contact with each other.
    Flat Edge
    Image of Product. Front orientation. Insulating Washers. Insulating Sleeve Washers, Flat Edge.
    The flat edge distributes weight evenly to take pressure off screw heads.
    Ultra-Chemical-Resistant PTFE—These washers insulate better than nylon and withstand higher temperatures, so they're a great choice for high-voltage equipment, such as capacitators, transformers, and semiconductors. They resist harsh acids, bases, solvents, and corrosive cleaners.
    Sleeve
    Temp.
    Range
    For Screw
    Size
    Ht.
    OD
    ID
    OD
    Thk.
    Overall
    Ht.
    Min.
    Max.,
    ° F
    Color
    Pkg.
    Qty.
    Pkg.
    Ultra-Chemical-Resistant PTFE
    No. 2
    		0.062"0.125"0.091"0.312"0.063"0.125"Not Rated500White500000000000000
    No. 4
    		0.030"0.136"0.115"0.200"0.030"0.060"Not Rated500White50000000000000
    No. 6
    		0.039"0.187"0.140"0.312"0.023"0.062"Not Rated500White500000000000000
    No. 8
    		0.045"0.265"0.169"0.375"0.049"0.094"Not Rated500White500000000000000
    No. 10
    		0.032"0.252"0.193"0.375"0.032"0.064"Not Rated500White500000000000000
    1/4"
    		0.045"0.355"0.260"0.545"0.049"0.094"Not Rated500White500000000000000
    3/8"
    		0.060"0.500"0.385"0.750"0.060"0.120"Not Rated500White50000000000000
     
    back to top