McMaster-Carr logo
    Filter by
    Material
    System of Measurement
    Color
    Washer Type
    Sleeve Height
    Attribute Image
    Maximum Temperature
    Edge Type
    Overall Height
    Attribute Image
    Minimum Temperature
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    DFARS Specialty Metals
    Hardness
    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.
    Hard Fiber—The least likely to scratch or mar delicate mounting surfaces, such as printed circuit boards. These washers provide a moderate amount of electrical insulation, but they don't block current as well as plastic or ceramic washers.
    Sleeve
    Temp.
    Range
    For Screw
    Size
    Ht.
    OD
    ID
    OD
    Thk.
    Overall
    Ht.
    Min.
    Max.,
    ° F
    Color
    Pkg.
    Qty.
    Pkg.
    Hard Fiber
    No. 2
    		0.025"0.154"0.090"0.250"0.030"0.055"Not Rated230Black50000000000000000
    No. 4
    		0.025"0.186"0.116"0.250"0.030"0.055"Not Rated230Black5000000000000000
    No. 6
    		0.030"0.186"0.142"0.313"0.040"0.070"Not Rated230Black500000000000000
    No. 8
    		0.030"0.246"0.168"0.375"0.040"0.070"Not Rated230Black5000000000000000
    No. 10
    		0.030"0.312"0.194"0.375"0.040"0.070"Not Rated230Black5000000000000000
    1/4"
    		0.030"0.312"0.254"0.500"0.040"0.070"Not Rated230Black5000000000000000
    3/8"
    		0.040"0.437"0.380"0.625"0.060"0.100"Not Rated230Black5000000000000000
     
    back to top