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    278 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.
    Nylon—Our most versatile insulating washers, these block unwanted current in everything from switches and circuit breakers to control panels and electric motors.
    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.
    Very-High-Temperature Ceramic—Our most heat-resistant washers and the best electrical insulators. These won't melt or become brittle at blistering temperatures up to 1,700° F, making them perfect for ovens, kilns, and furnaces. Ceramic may crack or dent if subjected to hard bumps, however, so these washers are not recommended for high-vibration applications.
    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, ° F
    For Screw
    Size
    Ht.
    OD
    ID
    OD
    Thk.
    Overall
    Ht.
    Min.
    Max.
    Color
    Pkg.
    Qty.
    Pkg.
    Nylon
    No. 2
    0.040"0.156"0.093"0.250"0.040"0.080"-40180Black10090061A003000000
    No. 2
    0.040"0.156"0.093"0.250"0.040"0.080"-40180Off-White10090062A00300000
    No. 2
    0.125"0.120"0.090"0.181"0.047"0.172"-40180Off-White10091145A11000000
    No. 2
    0.250"0.120"0.090"0.181"0.047"0.297"-40180Off-White10091145A11400000
    No. 2
    0.375"0.120"0.090"0.181"0.047"0.422"-40180Off-White10091145A11800000
    No. 4
    0.040"0.187"0.122"0.281"0.040"0.080"-40180Black10090061A00500000
    No. 4
    0.040"0.187"0.122"0.281"0.040"0.080"-40180Off-White10090062A00500000
    No. 4
    0.047"0.145"0.115"0.235"0.047"0.094"-40180Off-White10091145A21200000
    No. 4
    0.052"0.136"0.120"0.253"0.047"0.099"-40180Off-White10091145A22700000
    No. 4
    0.062"0.143"0.115"0.250"0.031"0.093"-40180Off-White10091145A22300000
    No. 4
    0.063"0.145"0.115"0.235"0.047"0.110"-40180Off-White10091145A21100000
    No. 4
    0.125"0.139"0.118"0.250"0.046"0.171"-40180Off-White10091145A22600000
    No. 4
    0.125"0.140"0.115"0.242"0.046"0.171"-40180Off-White10091145A22500000
    No. 4
    0.125"0.145"0.115"0.235"0.047"0.172"-40180Off-White10091145A12900000
    No. 4
    0.250"0.145"0.115"0.235"0.047"0.297"-40180Off-White10091145A13300000
    No. 4
    0.312"0.185"0.125"0.312"0.058"0.370"-40180Off-White10091145A22800000
    No. 4
    0.375"0.145"0.115"0.235"0.047"0.422"-40180Off-White10091145A13400000
    No. 4
    0.500"0.145"0.115"0.235"0.047"0.547"-40180Off-White10091145A13800000
    No. 6
    0.031"0.187"0.140"0.250"0.062"0.093"-40180Off-White10091145A22900000
    No. 6
    0.040"0.218"0.146"0.328"0.040"0.080"-40180Black10090061A00700000
    No. 6
    0.040"0.218"0.146"0.328"0.040"0.080"-40180Off-White10090062A00700000
    No. 6
    0.047"0.170"0.140"0.290"0.047"0.094"-40180Off-White10091145A21500000
    No. 6
    0.063"0.170"0.140"0.290"0.047"0.110"-40180Off-White10091145A21400000
    No. 6
    0.125"0.170"0.140"0.290"0.047"0.172"-40180Off-White10091145A14100000
    No. 6
    0.188"0.170"0.140"0.290"0.047"0.235"-40180Off-White10091145A21300000
    No. 6
    0.250"0.170"0.140"0.290"0.047"0.297"-40180Off-White10091145A14300000
    No. 6
    0.375"0.170"0.140"0.290"0.047"0.422"-40180Off-White10091145A14400000
    No. 6
    0.500"0.170"0.140"0.290"0.047"0.547"-40180Off-White10091145A14500000
    No. 8
    0.046"0.250"0.171"0.375"0.040"0.086"-40180Off-White10091145A23200000
    No. 8
    0.047"0.209"0.171"0.345"0.062"0.109"-40180Off-White10091145A23300000
    No. 8
    0.050"0.250"0.174"0.375"0.050"0.100"-40180Black10090061A00900000
    No. 8
    0.050"0.250"0.174"0.375"0.050"0.100"-40180Off-White10090062A00900000
    No. 8
    0.125"0.205"0.173"0.344"0.063"0.188"-40180Off-White10091145A21700000
    No. 8
    0.141"0.205"0.173"0.344"0.063"0.204"-40180Off-White10091145A21600000
    No. 8
    0.250"0.205"0.173"0.344"0.063"0.313"-40180Off-White10091145A14800000
    No. 8
    0.250"0.250"0.171"0.375"0.040"0.290"-40180Off-White10091145A23100000
    No. 8
    0.375"0.205"0.173"0.344"0.063"0.438"-40180Off-White10091145A14900000
    No. 8
    0.500"0.205"0.173"0.344"0.063"0.563"-40180Off-White10091145A15100000
    No. 8
    0.625"0.205"0.173"0.344"0.063"0.688"-40180Off-White10091145A15300000
    No. 8
    0.750"0.205"0.173"0.344"0.063"0.813"-40180Off-White10091145A15400000
    No. 10
    0.046"0.281"0.201"0.437"0.046"0.092"-40180Off-White10091145A24100000
    No. 10
    0.050"0.281"0.201"0.437"0.050"0.100"-40180Black10090061A01100000
    No. 10
    0.050"0.281"0.201"0.437"0.050"0.100"-40180Off-White10090062A01100000
    No. 10
    0.062"0.308"0.196"0.500"0.063"0.125"-40180Off-White5091145A23600000
    No. 10
    0.125"0.312"0.199"0.433"0.063"0.188"-40180Off-White10091145A23800000
    No. 10
    0.140"0.245"0.187"0.375"0.031"0.171"-40180Off-White10091145A23400000
    No. 10
    0.141"0.260"0.200"0.399"0.063"0.204"-40180Off-White10091145A21900000
    No. 10
    0.187"0.240"0.197"0.408"0.062"0.249"-40180Off-White10091145A23700000
    No. 10
    0.188"0.260"0.200"0.399"0.063"0.251"-40180Off-White10091145A21800000
    No. 10
    0.250"0.260"0.200"0.399"0.063"0.313"-40180Off-White10091145A15600000
    No. 10
    0.312"0.312"0.200"0.500"0.062"0.374"-40180Off-White10091145A23900000
    No. 10
    0.315"0.310"0.202"0.433"0.079"0.394"-40180Off-White10091145A24200000
    No. 10
    0.375"0.260"0.200"0.399"0.063"0.438"-40180Off-White10091145A15700000
    No. 10
    0.375"0.312"0.191"0.513"0.062"0.437"-40180Off-White5091145A23500000
    No. 10
    0.500"0.260"0.200"0.399"0.063"0.563"-40180Off-White10091145A15800000
    No. 10
    0.625"0.260"0.200"0.399"0.063"0.688"-40180Off-White10091145A16000000
    No. 10
    0.750"0.260"0.200"0.399"0.063"0.813"-40180Off-White10091145A16100000
    No. 12
    0.187"0.240"0.220"0.408"0.062"0.249"-40180Off-White10091145A24300000
    No. 12
    0.236"0.315"0.240"0.480"0.079"0.315"-40180Off-White10091145A24400000
    1/4"
    0.031"0.312"0.252"0.500"0.031"0.062"-40180Off-White10091145A24800000
    1/4"
    0.060"0.375"0.260"0.562"0.060"0.120"-40180Black10090061A01500000
    1/4"
    0.060"0.375"0.260"0.562"0.060"0.120"-40180Off-White10090062A01500000
    1/4"
    0.062"0.310"0.250"0.425"0.062"0.124"-40180Off-White10091145A24700000
    1/4"
    0.078"0.312"0.255"0.464"0.016"0.094"-40180Off-White10091145A25400000
    1/4"
    0.093"0.343"0.257"0.505"0.062"0.155"-40180Off-White10091145A25600000
    1/4"
    0.094"0.312"0.260"0.505"0.063"0.157"-40180Off-White10091145A25900000
    1/4"
    0.125"0.310"0.260"0.450"0.065"0.190"-40180Off-White10091145A26100000
    1/4"
    0.125"0.312"0.255"0.467"0.046"0.171"-40180Off-White10091145A25100000
    1/4"
    0.125"0.312"0.260"0.513"0.063"0.188"-40180Off-White10091145A16200000
    1/4"
    0.125"0.327"0.260"0.630"0.063"0.188"-40180Off-White5091145A25700000
    1/4"
    0.125"0.359"0.266"0.697"0.062"0.187"-40180Off-White10091145A26300000
    1/4"
    0.125"0.370"0.250"0.600"0.125"0.250"-40180Off-White10091145A24500000
    1/4"
    0.140"0.312"0.260"0.515"0.062"0.202"-40180Off-White10091145A25800000
    1/4"
    0.170"0.375"0.257"0.500"0.125"0.295"-40180Off-White10091145A25500000
    1/4"
    0.187"0.322"0.255"0.625"0.062"0.249"-40180Off-White10091145A25300000
    1/4"
    0.187"0.375"0.254"0.630"0.062"0.249"-40180Off-White10091145A24900000
    1/4"
    0.188"0.312"0.260"0.513"0.063"0.251"-40180Off-White10091145A22200000
    1/4"
    0.250"0.312"0.260"0.513"0.031"0.281"-40180Off-White10091145A22100000
    1/4"
    0.250"0.312"0.260"0.513"0.063"0.313"-40180Off-White10091145A16500000
    1/4"
    0.375"0.312"0.260"0.513"0.063"0.438"-40180Off-White10091145A16600000
    1/4"
    0.375"0.312"0.261"0.513"0.063"0.438"-40180Off-White10091145A26200000
    1/4"
    0.437"0.375"0.250"0.500"0.062"0.499"-40180Off-White10091145A24600000
    1/4"
    0.437"0.375"0.255"0.563"0.062"0.499"-40180Off-White10091145A25200000
    1/4"
    0.500"0.312"0.260"0.513"0.063"0.563"-40180Off-White10091145A16700000
    1/4"
    0.625"0.312"0.260"0.513"0.063"0.688"-40180Off-White10091145A16800000
    1/4"
    0.750"0.312"0.260"0.513"0.063"0.813"-40180Off-White10091145A16900000
    5/16"
    0.046"0.375"0.323"0.750"0.046"0.092"-40180Off-White10091145A26600000
    5/16"
    0.125"0.360"0.320"0.620"0.063"0.188"-40180Off-White10091145A17800000
    5/16"
    0.139"0.405"0.320"0.625"0.066"0.205"-40180Off-White10091145A26400000
    5/16"
    0.250"0.360"0.320"0.625"0.063"0.313"-40180Off-White10091145A18000000
    5/16"
    0.375"0.360"0.320"0.620"0.063"0.438"-40180Off-White10091145A18500000
    5/16"
    0.395"0.430"0.322"0.740"0.065"0.460"-40180Off-White5091145A26500000
    5/16"
    0.500"0.360"0.320"0.620"0.063"0.563"-40180Off-White10091145A19000000
    5/16"
    0.625"0.360"0.320"0.620"0.063"0.688"-40180Off-White10091145A19500000
    3/8"
    0.060"0.500"0.385"0.750"0.060"0.120"-40180Black10090061A01700000
    3/8"
    0.060"0.500"0.385"0.750"0.060"0.120"-40180Off-White10090062A01700000
    3/8"
    0.062"0.500"0.375"0.750"0.125"0.187"-40180Off-White10091145A26900000
    3/8"
    0.155"0.545"0.391"0.745"0.100"0.255"-40180Off-White2591145A28100000
    3/8"
    0.187"0.443"0.375"0.743"0.062"0.249"-40180Off-White5091145A27100000
    3/8"
    0.188"0.437"0.376"0.743"0.063"0.251"-40180Off-White10091145A27200000
    3/8"
    0.188"0.498"0.378"0.750"0.063"0.251"-40180Off-White10091145A27300000
    3/8"
    0.250"0.505"0.378"0.755"0.078"0.328"-40180Off-White10091145A27400000
    3/8"
    0.250"0.546"0.406"0.980"0.125"0.375"-40180Off-White5091145A28300000
    3/8"
    0.250"0.556"0.380"0.980"0.125"0.375"-40180Off-White5091145A27500000
    3/8"
    0.312"0.500"0.380"0.625"0.062"0.374"-40180Off-White10091145A27600000
    3/8"
    0.313"0.500"0.395"0.625"0.063"0.376"-40180Off-White10091145A28200000
    3/8"
    0.375"0.470"0.385"0.570"0.063"0.438"-40180Off-White10091145A27800000
    3/8"
    0.440"0.495"0.390"0.745"0.063"0.503"-40180Off-White5091145A27900000
    3/8"
    0.563"0.500"0.382"1.000"0.063"0.626"-40180Off-White5091145A27700000
    3/8"
    0.750"0.500"0.375"1.000"0.125"0.875"-40180Off-White1091145A2670000
    3/8"
    1.000"0.500"0.375"0.875"0.063"1.063"-40180Off-White5091145A26800000
    7/16"
    0.375"0.630"0.440"0.875"0.125"0.500"-40180Off-White5091145A28400000
    1/2"
    0.094"0.740"0.515"1.125"0.063"0.157"-40180Off-White5091145A29500000
    1/2"
    0.187"0.625"0.510"0.750"0.062"0.249"-40180Off-White10091145A29300000
    1/2"
    0.250"0.617"0.509"0.750"0.062"0.312"-40180Off-White10091145A28900000
    1/2"
    0.250"0.718"0.515"1.125"0.187"0.437"-40180Off-White2591145A29600000
    1/2"
    0.281"0.752"0.515"1.105"0.125"0.406"-40180Off-White2591145A29400000
    1/2"
    0.312"0.625"0.505"0.750"0.062"0.374"-40180Off-White5091145A28800000
    1/2"
    0.313"0.563"0.500"0.745"0.031"0.344"-40180Off-White5091145A28600000
    1/2"
    0.330"0.625"0.515"1.000"0.040"0.370"-40180Off-White2591145A29700000
    1/2"
    0.375"0.633"0.510"0.875"0.125"0.500"-40180Off-White5091145A29200000
    1/2"
    0.406"0.600"0.538"1.252"0.063"0.469"-40180Off-White2591145A29900000
    1/2"
    0.437"0.625"0.500"0.750"0.062"0.499"-40180Off-White5091145A28500000
    1/2"
    0.437"0.700"0.510"1.125"0.093"0.530"-40180Off-White5091145A29100000
    1/2"
    0.500"0.620"0.520"0.825"0.062"0.562"-40180Off-White5091145A29800000
    1/2"
    0.619"0.740"0.504"0.995"0.125"0.744"-40180Off-White2591145A28700000
    9/16"
    0.203"0.750"0.617"0.880"0.047"0.250"-40180Off-White5091145A30100000
    5/8"
    0.120"0.745"0.645"1.000"0.130"0.250"-40180Off-White2591145A30400000
    5/8"
    0.500"0.750"0.635"0.875"0.063"0.563"-40180Off-White5091145A30300000
    5/8"
    0.500"0.875"0.627"1.245"0.125"0.625"-40180Off-White2591145A30200000
    3/4"
    0.313"0.880"0.758"1.130"0.062"0.375"-40180Off-White5091145A30500000
    7/8"
    0.344"0.995"0.885"1.250"0.156"0.500"-40180Off-White2591145A30600000
    1"
    0.625"1.375"1.015"1.750"0.125"0.750"-40180Off-White1091145A30700000
    M2
    3.000 mm3.000 mm2.100 mm4.200 mm1.000 mm4.000 mm-40180Off-White10091145A32100000
    M3
    2.000 mm4.000 mm3.100 mm6.200 mm1.000 mm3.000 mm-40180Off-White10091145A31900000
    M3
    4.000 mm4.000 mm3.100 mm6.200 mm1.000 mm5.000 mm-40180Off-White10091145A31800000
    M3
    8.000 mm4.000 mm3.100 mm6.200 mm1.000 mm9.000 mm-40180Off-White10091145A31700000
    M4
    3.000 mm6.000 mm4.100 mm8.400 mm1.500 mm4.500 mm-40180Off-White10091145A31600000
    M4
    5.000 mm6.000 mm4.100 mm8.400 mm1.500 mm6.500 mm-40180Off-White10091145A31500000
    M5
    3.000 mm7.000 mm5.100 mm10.200 mm2.000 mm5.000 mm-40180Off-White10091145A31400000
    M5
    5.000 mm7.000 mm5.100 mm10.200 mm2.000 mm7.000 mm-40180Off-White10091145A31300000
    M6
    4.000 mm8.000 mm6.100 mm12.200 mm2.000 mm6.000 mm-40180Off-White10091145A31200000
    M6
    10.000 mm8.000 mm6.100 mm12.200 mm2.000 mm12.000 mm-40180Off-White10091145A31100000
    M8
    4.000 mm10.000 mm8.100 mm14.200 mm2.500 mm6.500 mm-40180Off-White10091145A30900000
    M8
    8.000 mm10.000 mm8.100 mm14.200 mm2.500 mm10.500 mm-40180Off-White10091145A30800000
     
    Ultra-Chemical-Resistant PTFE
    No. 2
    0.062"0.125"0.091"0.312"0.063"0.125"Not Rated500White593835A3100000
    No. 4
    0.030"0.136"0.115"0.200"0.030"0.060"Not Rated500White593835A3200000
    No. 6
    0.039"0.187"0.140"0.312"0.023"0.062"Not Rated500White593835A33000000
    No. 8
    0.045"0.265"0.169"0.375"0.049"0.094"Not Rated500White593835A34000000
    No. 10
    0.032"0.252"0.193"0.375"0.032"0.064"Not Rated500White593835A35000000
    1/4"
    0.045"0.355"0.260"0.545"0.049"0.094"Not Rated500White593835A36000000
    3/8"
    0.060"0.500"0.385"0.750"0.060"0.120"Not Rated500White593835A37000000
     
    Very-High-Temperature Ceramic
    No. 6
    0.062"0.281"0.150"0.500"0.125"0.187"Not Rated1,700Off-White592107A41000000
    No. 6
    0.250"0.281"0.150"0.500"0.187"0.437"Not Rated1,700Off-White592107A45000000
    No. 8
    0.062"0.406"0.175"0.625"0.125"0.187"Not Rated1,700Off-White592107A41600000
    No. 8
    0.250"0.406"0.175"0.625"0.218"0.468"Not Rated1,700Off-White592107A45600000
    No. 10
    0.062"0.468"0.200"0.750"0.156"0.218"Not Rated1,700Off-White592107A41800000
    No. 10
    0.250"0.468"0.200"0.750"0.218"0.468"Not Rated1,700Off-White592107A45800000
    1/4"
    0.062"0.593"0.265"0.875"0.188"0.250"Not Rated1,700Off-White592107A42100000
    1/4"
    0.250"0.593"0.265"0.875"0.250"0.500"Not Rated1,700Off-White592107A46100000
    M2
    2.500 mm3.000 mm2.100 mm4.200 mm1.500 mm4.000 mmNot Rated1,700Off-White192107A1110000
    M3
    1.500 mm4.000 mm3.100 mm6.200 mm1.500 mm3.000 mmNot Rated1,700Off-White192107A1120000
    M3
    3.500 mm4.000 mm3.100 mm6.200 mm1.500 mm5.000 mmNot Rated1,700Off-White192107A1130000
    M3
    7.500 mm4.000 mm3.100 mm6.200 mm1.500 mm9.000 mmNot Rated1,700Off-White192107A1140000
    M4
    3.000 mm6.000 mm4.100 mm8.400 mm1.500 mm4.500 mmNot Rated1,700Off-White192107A1150000
    M4
    5.000 mm6.000 mm4.100 mm8.400 mm1.500 mm6.500 mmNot Rated1,700Off-White192107A1160000
    M5
    3.000 mm7.000 mm5.100 mm10.200 mm2.000 mm5.000 mmNot Rated1,700Off-White192107A1170000
    M5
    5.000 mm7.000 mm5.100 mm10.200 mm2.000 mm7.000 mmNot Rated1,700Off-White192107A1180000
    M6
    4.000 mm8.000 mm6.100 mm12.200 mm2.000 mm6.000 mmNot Rated1,700Off-White192107A1190000
    M6
    10.000 mm8.000 mm6.100 mm12.200 mm2.000 mm12.000 mmNot Rated1,700Off-White192107A1200000
    M8
    4.000 mm10.000 mm8.100 mm14.200 mm2.500 mm6.500 mmNot Rated1,700Off-White192107A1210000
    M8
    8.000 mm10.000 mm8.100 mm14.200 mm2.500 mm10.500 mmNot Rated1,700Off-White192107A1220000
     
    Hard Fiber
    No. 2
    0.025"0.154"0.090"0.250"0.030"0.055"Not Rated230Black5093920A11000000
    No. 4
    0.025"0.186"0.116"0.250"0.030"0.055"Not Rated230Black5093920A12000000
    No. 6
    0.030"0.186"0.142"0.313"0.040"0.070"Not Rated230Black5093920A1300000
    No. 8
    0.030"0.246"0.168"0.375"0.040"0.070"Not Rated230Black5093920A14000000
    No. 10
    0.030"0.312"0.194"0.375"0.040"0.070"Not Rated230Black5093920A15000000
    1/4"
    0.030"0.312"0.254"0.500"0.040"0.070"Not Rated230Black5093920A16000000
    3/8"
    0.040"0.437"0.380"0.625"0.060"0.100"Not Rated230Black5093920A17000000
     
    Rolled Edge for Sealing
    Image of Product. Front orientation. Insulating Washers. Insulating Sleeve Washers, Rolled Edge.
    The rolled edge compresses into the screw threads as you tighten, sealing out dirt, oil, and other contaminants.
    Nylon—Our most versatile insulating washers, these block unwanted current in everything from switches and circuit breakers to control panels and electric motors.
    Sleeve
    Temp.
    Range, ° F
    For Screw
    Size
    Ht.
    OD
    ID
    OD
    Overall
    Ht.
    Min.
    Max.
    Color
    Pkg.
    Qty.
    Pkg.
    Nylon
    No. 2
    0.015"0.112"0.088"0.175"0.065"-40180Off-White2590097A04000000
    No. 2
    0.750"0.112"0.088"0.175"0.800"-40180Off-White2590097A11400000
    No. 2
    1.000"0.112"0.088"0.175"1.050"-40180Off-White2590097A11500000
    No. 4
    0.015"0.140"0.116"0.195"0.080"-40180Off-White2590097A0800000
    No. 4
    0.125"0.140"0.116"0.195"0.190"-40180Off-White2590097A11600000
    No. 6
    0.020"0.172"0.142"0.225"0.095"-40180Off-White2590097A1300000
    No. 6
    0.125"0.172"0.142"0.225"0.200"-40180Off-White2590097A12200000
    No. 6
    1.000"0.172"0.142"0.225"1.075"-40180Off-White2590097A12600000
    No. 8
    0.035"0.198"0.168"0.270"0.115"-40180Off-White2590097A1500000
    No. 8
    0.125"0.198"0.168"0.270"0.205"-40180Off-White2590097A12700000
    No. 10
    0.035"0.228"0.194"0.300"0.115"-40180Off-White2590097A1700000
    No. 10
    0.125"0.228"0.194"0.300"0.205"-40180Off-White2590097A13300000
    No. 10
    0.250"0.228"0.194"0.300"0.330"-40180Off-White2590097A18000000
    No. 12
    0.025"0.254"0.220"0.330"0.125"-40180Off-White2590097A1900000
    No. 12
    0.125"0.254"0.220"0.330"0.225"-40180Off-White2590097A13700000
    No. 12
    0.250"0.254"0.220"0.330"0.350"-40180Off-White2590097A13800000
    No. 12
    1.000"0.254"0.220"0.330"1.100"-40180Off-White2590097A14200000
    1/4"
    0.025"0.292"0.252"0.365"0.125"-40180Off-White2590097A2100000
    1/4"
    0.125"0.292"0.252"0.365"0.225"-40180Off-White2590097A14300000
    1/4"
    0.250"0.292"0.252"0.365"0.350"-40180Off-White2590097A22000000
    1/4"
    0.500"0.292"0.252"0.365"0.600"-40180Off-White2590097A52000000
    1/4"
    1.000"0.292"0.252"0.365"1.100"-40180Off-White2590097A14500000
    5/16"
    0.125"0.356"0.316"0.460"0.230"-40180Off-White2590097A14600000
    5/16"
    0.250"0.356"0.316"0.460"0.355"-40180Off-White2590097A54000000
    5/16"
    0.500"0.356"0.316"0.460"0.605"-40180Off-White2590097A14700000
    3/8"
    0.035"0.419"0.379"0.535"0.160"-40180Off-White2590097A23000000
    3/8"
    0.125"0.419"0.379"0.535"0.250"-40180Off-White2590097A15100000
    3/8"
    0.250"0.419"0.379"0.535"0.375"-40180Off-White2590097A24000000
    3/8"
    0.500"0.419"0.379"0.535"0.625"-40180Off-White2590097A15200000
    3/8"
    1.000"0.419"0.379"0.535"1.125"-40180Off-White2590097A15400000
    7/16"
    0.125"0.486"0.441"0.600"0.260"-40180Off-White2590097A15500000
    7/16"
    0.250"0.486"0.441"0.600"0.385"-40180Off-White2590097A15600000
    7/16"
    1.000"0.486"0.441"0.600"1.135"-40180Off-White2590097A15900000
    1/2"
    0.040"0.548"0.504"0.645"0.195"-40180Off-White2590097A25000000
    1/2"
    0.125"0.548"0.504"0.645"0.280"-40180Off-White2590097A16100000
    1/2"
    0.250"0.548"0.504"0.645"0.405"-40180Off-White2590097A16200000
    1/2"
    0.500"0.548"0.504"0.645"0.655"-40180Off-White2590097A26000000
    1/2"
    0.750"0.548"0.504"0.645"0.905"-40180Off-White2590097A16300000
    1/2"
    1.000"0.548"0.504"0.645"1.155"-40180Off-White2590097A16400000
    5/8"
    0.125"0.679"0.629"0.800"0.285"-40180Off-White2590097A16500000
    5/8"
    0.250"0.679"0.630"0.800"0.410"-40180Off-White2590097A55000000
    5/8"
    0.500"0.679"0.629"0.800"0.660"-40180Off-White2590097A16600000
    5/8"
    0.750"0.679"0.629"0.800"0.910"-40180Off-White2590097A16700000
    5/8"
    1.000"0.679"0.629"0.800"1.160"-40180Off-White2590097A16800000
    3/4"
    0.125"0.810"0.754"0.935"0.295"-40180Off-White2590097A16900000
    3/4"
    0.250"0.810"0.754"0.935"0.420"-40180Off-White2590097A17100000
    3/4"
    0.500"0.810"0.754"0.935"0.670"-40180Off-White2590097A17200000
    3/4"
    0.750"0.810"0.754"0.935"0.920"-40180Off-White2590097A57000000
    3/4"
    1.000"0.810"0.754"0.935"1.170"-40180Off-White2590097A17300000
    7/8"
    0.125"0.954"0.879"1.030"0.305"-40180Off-White2590097A17400000
    7/8"
    0.250"0.954"0.879"1.030"0.430"-40180Off-White2590097A17500000
    7/8"
    1.000"0.954"0.879"1.030"1.180"-40180Off-White2590097A17800000
    1"
    0.750"1.075"1.005"1.280"0.935"-40180Off-White2590097A18300000
    1"
    1.000"1.075"1.005"1.280"1.185"-40180Off-White2590097A18400000
    M2.5
    3.175 mm3.100 mm2.600 mm4.400 mm4.800 mm-40180Off-White2590097A18500000
    M3
    3.175 mm3.700 mm3.100 mm5.000 mm4.800 mm-40180Off-White2590097A19100000
    M3
    6.300 mm3.700 mm3.100 mm5.000 mm8.000 mm-40180Off-White2590097A19200000
    M3
    12.700 mm3.700 mm3.100 mm5.000 mm14.300 mm-40180Off-White2590097A19300000
    M4
    3.175 mm4.800 mm4.100 mm6.200 mm5.300 mm-40180Off-White2590097A19600000
    M4
    6.300 mm4.800 mm4.100 mm6.200 mm8.400 mm-40180Off-White2590097A19700000
    M5
    3.175 mm5.800 mm5.100 mm7.900 mm5.500 mm-40180Off-White2590097A20200000
    M5
    12.700 mm5.800 mm5.100 mm7.900 mm15.000 mm-40180Off-White2590097A20400000
    M6
    3.175 mm6.900 mm6.100 mm9.000 mm5.800 mm-40180Off-White2590097A20700000
    M6
    25.400 mm6.900 mm6.100 mm9.000 mm28.000 mm-40180Off-White2590097A21200000
    M8
    3.175 mm9.000 mm8.100 mm12.000 mm5.800 mm-40180Off-White2590097A21300000
    M8
    6.300 mm9.000 mm8.100 mm12.000 mm9.000 mm-40180Off-White2590097A21400000
    M8
    12.700 mm9.000 mm8.100 mm12.000 mm15.400 mm-40180Off-White2590097A21500000
    M8
    19.050 mm9.000 mm8.100 mm12.000 mm21.700 mm-40180Off-White2590097A21600000
    M10
    3.175 mm11.000 mm10.100 mm12.900 mm6.100 mm-40180Off-White2590097A21800000
    M10
    6.300 mm11.000 mm10.100 mm12.900 mm9.500 mm-40180Off-White2590097A21900000
    M10
    12.700 mm11.000 mm10.100 mm12.900 mm15.800 mm-40180Off-White2590097A22100000
    M10
    25.400 mm11.000 mm10.100 mm12.900 mm28.500 mm-40180Off-White2590097A22300000
    M12
    3.175 mm13.100 mm12.100 mm15.600 mm6.700 mm-40180Off-White2590097A22400000
    M12
    12.700 mm13.100 mm12.100 mm15.600 mm16.300 mm-40180Off-White2590097A22600000
    M12
    25.400 mm13.100 mm12.100 mm15.600 mm29.000 mm-40180Off-White2590097A22800000
    M16
    3.175 mm17.300 mm16.100 mm20.300 mm7.000 mm-40180Off-White2590097A23500000
    M16
    19.050 mm17.300 mm16.100 mm20.300 mm23.100 mm-40180Off-White2590097A23800000
     

    Countersunk Insulating Sleeve Washers

    Image of Product. Bottom orientation. Insulating Washers. Countersunk Insulating Sleeve Washers.
    Flat- and oval-head screws sit flush within these insulating washers, so they won't stick out and snag on objects. Washers cover the screw head and a portion of the threads to block electrical current and prevent short circuits. They also extend the life of your assembly by preventing galvanic corrosion, which is when two different metals rust more quickly due to contact with each other.
    Nylon—Our most versatile insulating washers, these block unwanted current in everything from switches and circuit breakers to control panels and electric motors.
    Sleeve
    Temp.
    Range, ° F
    For Screw
    Size
    Ht.
    OD
    ID
    OD
    Overall
    Ht.
    Countersink
    Angle
    Min.
    Max.
    Color
    Pkg.
    Qty.
    Pkg.
    Nylon
    No. 10
    0.067"0.272"0.200"0.488"0.177"90°
    -40180White1092354A17000000
    1/4"
    0.067"0.315"0.240"0.504"0.197"90°
    -40180White1092354A1800000
    5/16"
    0.063"0.390"0.320"0.732"0.236"90°
    -40180White1092354A1900000
    3/8"
    0.059"0.469"0.397"0.898"0.276"90°
    -40180White1092354A2100000
    M4
    2.000 mm5.900 mm4.100 mm10.400 mm4.300 mm90°
    -40180White1092354A1100000
    M5
    1.700 mm6.900 mm5.100 mm12.400 mm4.500 mm90°
    -40180White1092354A1200000
    M6
    1.700 mm8.000 mm6.000 mm12.800 mm5.000 mm90°
    -40180White1092354A1300000
    M8
    1.600 mm9.900 mm8.100 mm18.600 mm6.000 mm90°
    -40180White1092354A1400000
    M10
    1.500 mm11.900 mm10.100 mm22.800 mm7.000 mm90°
    -40180White1092354A1500000
    M12
    1.900 mm13.000 mm12.100 mm27.500 mm8.500 mm90°
    -40180White1092354A1600000
     

    Insulating Sleeve Washer Assortments

    Image of Product. Front orientation. Insulating Washers. Insulating Sleeve Washer Assortments.
    Keep a collection of common sizes on hand to insulate a variety of screws. These washers create a barrier between the screw threads and the mating surface to cut off electrical current and prevent short circuits. They also extend the life of your assembly by preventing galvanic corrosion, which is when two different metals rust more quickly due to contact with each other.
    Nylon—Our most versatile insulating washers, these block unwanted current in everything from switches and circuit breakers to control panels and electric motors.
    No. of
    Pieces
    Sizes Included
    Temp.,
    ° F
    Color
    Container
    Type
    Each
    Nylon
    245For No. 2 to 5/16" Screw Sizes-40 to 185Off-WhitePlastic Box90062A600000000
     

    Reinforcing Sleeve Washers

    These sleeve washers are a great solution when your nut or screw is harder than the material you're mounting it in. They reinforce the top of the hole to prevent soft material from collapsing as you tighten.
    Stainless SteelAbout Stainless Steel
    Image of Product. Front orientation. Contains Annotated. Washers. Reinforcing Sleeve Washers.
    High-Strength 17-4 PH Stainless Steel—Similar strength to 17-7 stainless steel washers and comparable to high-strength Grade 8 steel. These washers won’t rust in wet and outdoor environments, but they can’t handle the harsh chemicals that 316 stainless steel can.
    Sleeve
    For Screw
    Size
    ID
    OD
    OD
    Ht.
    Thk.
    Overall
    Ht.
    Each
    High-Strength 17-4 PH Stainless Steel
    M10
    0.410"0.790"0.505"0.146"0.098"0.244"93762A700000000
     
    Steel
    Image of Product. Front orientation. Contains Annotated. Washers. Reinforcing Sleeve Washers.
    Black-Oxide Steel—Typically chosen for their appearance, these washers have a dark, matte coating that creates a finished look. They offer minimal corrosion resistance, so they're best for dry environments.
    Sleeve
    For Screw
    Size
    ID
    OD
    OD
    Ht.
    Thk.
    Overall
    Ht.
    Each
    Black-Oxide Steel
    No. 8
    0.177"0.500"0.237"0.223"0.090"0.313"93762A11000000
    No. 10
    0.201"0.500"0.261"0.223"0.090"0.313"93762A1200000
    1/4"
    0.260"0.562"0.317"0.225"0.090"0.315"93762A1000000
    5/16"
    0.322"0.625"0.379"0.215"0.100"0.315"93762A2000000
    3/8"
    0.385"0.750"0.442"0.200"0.115"0.315"93762A3000000
    3/8"
    0.386"0.875"0.446"0.208"0.120"0.328"93762A1300000
    7/16"
    0.447"0.812"0.570"0.290"0.120"0.410"93762A4000000
    7/16"
    0.447"0.875"0.528"0.340"0.120"0.460"93762A5000000
    1/2"
    0.510"0.875"0.566"0.215"0.120"0.335"93762A6000000
    1/2"
    0.515"1.000"0.575"0.193"0.120"0.313"93762A1400000
     
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