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    228 Products

    Heavy-Vibration-Resistant Spring Lock Washers
    3D CAD models available

    Image of Product. Front orientation. Lock Washers. Spring Lock Washer, Conical Washer.
    With a grip that's second only to wedge lock, these washers stop nuts and screws from wiggling loose under constant, vigorous vibration. They are ideal for engines, turbines, generators, and other heavy duty equipment. Similar to a spring, they flatten under pressure to add tension between mating surfaces. As long as the washers aren't deformed or otherwise damaged, you can reuse them indefinitely without losing locking strength. Also known as conical washers and Belleville washers.
    Stack multiple washers in the same direction to double or triple how much weight they can bear. Stack washers in opposite directions for better deflection, which means they compress further and withstand more shock and movement without loosening.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    Steel—Best for dry environments since moisture will cause these washers to rust.
    Top Serration—Adds friction for extra gripping power.
    For Screw
    Size
    ID
    OD
    Thk.
    Overall
    Ht.
    Serration
    Location
    Pkg.
    Qty.
    Pkg.
    Zinc-Plated Steel
    No. 6
    0.142"0.362"0.025" to 0.031"0.047"Top5000000000000000
    No. 8
    0.161"0.402"0.036" to 0.042"0.059"Top100000000000000
    No. 10
    0.201"0.481"0.047" to 0.053"0.073"Top100000000000000
    1/4"
    0.254"0.559"0.049" to 0.055"0.087"Top500000000000000
    5/16"
    0.323"0.717"0.052" to 0.058"0.095"Top250000000000000
    3/8"
    0.402"0.877"0.059" to 0.065"0.108"Top250000000000000
    7/16"
    0.489"1.074"0.075" to 0.082"0.120"Top100000000000000
    5/8"
    0.646"1.273"0.095" to 0.101"0.156"Top50000000000000
     
    Steel
    No. 6
    0.142"0.362"0.025" to 0.031"0.047"Top10000000000000000
    No. 8
    0.161"0.402"0.036" to 0.042"0.059"Top10000000000000000
    No. 10
    0.201"0.481"0.047" to 0.053"0.073"Top500000000000000
    1/4"
    0.254"0.559"0.049" to 0.055"0.087"Top500000000000000
    5/16"
    0.323"0.717"0.052" to 0.058"0.095"Top5000000000000000
    3/8"
    0.402"0.877"0.059" to 0.065"0.108"Top2500000000000000
    7/16"
    0.489"1.074"0.075" to 0.081"0.120"Top100000000000000
    1/2"
    0.512"1.074"0.075" to 0.081"0.120"Top100000000000000
    5/8"
    0.646"1.273"0.095" to 0.101"0.156"Top50000000000000
     

    Heavy-Vibration-Resistant Spring Lock Washers for Socket Head Screws
    3D CAD models available

    Image of Product. Front orientation. Lock Washers. Spring Lock Washer, Conical Washer, For Socket Head Screws.
    Stop socket head screws from wiggling loose on equipment with constant, vigorous vibration, such as engines, turbines, and generators. These washers have a small diameter to fit under screws with narrow heads. Similar to a spring, they flatten under pressure to add tension between mating surfaces. As long as the washers aren't deformed or otherwise damaged, you can reuse them indefinitely without losing locking strength. Also known as conical washers and Belleville washers.
    Stack multiple washers in the same direction to double or triple how much weight they can bear. Stack washers in opposite directions for better deflection, which means they compress further and withstand more shock and movement without loosening.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these washers won't rust when exposed to moisture. However, they can't hold up to the harsh chemicals that 316 stainless steel can.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    Steel—Best for dry environments since moisture will cause these washers to rust.
    Top-and-Bottom Serration—Adds friction for extra gripping power.
    For Screw
    Size
    ID
    OD
    Thk.
    Overall
    Ht.
    Serration
    Location
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    No. 5, M30.126"0.217"0.020"0.037"Top and Bottom50000000000000000
    No. 6, M3.50.146"0.236"0.028"0.045"Top and Bottom5000000000000000
    No. 8, M40.169"0.276"0.028"0.047"Top and Bottom5000000000000000
    No. 10, M50.209"0.354"0.028"0.047"Top and Bottom2500000000000000
    1/4", M60.264"0.374"0.028"0.047"Top and Bottom100000000000000
    5/16", M80.331"0.512"0.039"0.063"Top and Bottom100000000000000
    3/8", M100.413"0.630"0.039"0.063"Top and Bottom50000000000000
    7/16", M110.457"0.626"0.051"0.073"Top and Bottom50000000000000
    1/2", M120.539"0.748"0.051"0.073"Top and Bottom500000000000000
    9/16", M140.591"0.866"0.059"0.091"Top and Bottom10000000000000
    5/8", M160.669"0.945"0.059"0.091"Top and Bottom10000000000000
    3/4", M190.787"1.181"0.071"0.102"Top and Bottom10000000000000
    7/8", M220.906"1.299"0.071"0.118"Top and Bottom10000000000000
    1", M251.063"1.496"0.098"0.142"Top and Bottom100000000000000
    1 1/8", M301.244"1.772"0.098"0.161"Top and Bottom100000000000000
    1 3/8", M361.496"2.126"0.118"0.185"Top and Bottom100000000000000
    M1.6
    0.067"0.126"0.020"0.030"Top and Bottom5000000000000000
    M2
    0.087"0.157"0.014"0.024"Top and Bottom5000000000000000
    M2.5
    0.106"0.189"0.018"0.035"Top and Bottom5000000000000000
    M3
    0.126"0.217"0.018"0.035"Top and Bottom5000000000000000
    M4
    0.169"0.278"0.020"0.039"Top and Bottom5000000000000000
    M6
    0.252"0.394"0.024"0.047"Top and Bottom100000000000000
    M7
    0.291"0.472"0.028"0.051"Top and Bottom500000000000000
    M8
    0.331"0.512"0.028"0.055"Top and Bottom1000000000000000
    M10
    0.413"0.630"0.035"0.063"Top and Bottom500000000000000
    M18
    0.748"1.063"0.059"0.091"Top and Bottom10000000000000
    M20
    0.827"1.181"0.059"0.098"Top and Bottom10000000000000
     
    Zinc-Plated Steel
    No. 4
    0.126"0.217"0.020"0.037"Top and Bottom10000000000000000
    No. 5, M30.126"0.217"0.018"0.035"Top and Bottom1000000000000000
    No. 6, M3.50.146"0.236"0.020"0.035"Top and Bottom10000000000000000
    No. 8, M40.169"0.276"0.020"0.039"Top and Bottom10000000000000000
    No. 10, M50.209"0.354"0.024"0.043"Top and Bottom10000000000000000
    No. 12
    0.252"0.394"0.028"0.047"Top and Bottom5000000000000000
    1/4", M60.264"0.374"0.024"0.047"Top and Bottom5000000000000000
    5/16", M80.331"0.512"0.028"0.055"Top and Bottom5000000000000000
    3/8", M100.413"0.630"0.035"0.063"Top and Bottom250000000000000
    7/16", M110.457"0.626"0.035"0.063"Top and Bottom250000000000000
    1/2", M120.539"0.748"0.039"0.071"Top and Bottom250000000000000
    9/16", M140.591"0.866"0.043"0.079"Top and Bottom2500000000000000
    5/8", M160.669"0.945"0.047"0.083"Top and Bottom2500000000000000
    3/4", M190.787"1.181"0.055"0.098"Top and Bottom1000000000000000
    7/8", M220.906"1.299"0.055"0.106"Top and Bottom500000000000000
    1", M251.063"1.496"0.071"0.122"Top and Bottom500000000000000
    1 1/16", M271.126"1.535"0.071"0.122"Top and Bottom500000000000000
    1 1/8", M301.244"1.772"0.071"0.142"Top and Bottom500000000000000
    1 3/8", M361.496"2.126"0.098"0.165"Top and Bottom10000000000000
    M1.6
    0.067"0.126"0.014"0.024"Top and Bottom1000000000000000
    M2
    0.087"0.157"0.014"0.024"Top and Bottom1000000000000000
    M2.5
    0.106"0.189"0.018"0.035"Top and Bottom1000000000000000
    M18
    0.748"1.063"0.055"0.091"Top and Bottom1000000000000000
    M20
    0.827"1.181"0.055"0.098"Top and Bottom500000000000000
    M24
    1.008"1.417"0.063"0.114"Top and Bottom500000000000000
     
    Steel
    No. 5, M30.126"0.217"0.018"0.035"Top and Bottom1000000000000000
    No. 6, M3.50.146"0.236"0.018"0.035"Top and Bottom1000000000000000
    No. 8, M40.169"0.276"0.020"0.039"Top and Bottom1000000000000000
    No. 10, M50.209"0.354"0.024"0.043"Top and Bottom1000000000000000
    1/4", M60.264"0.374"0.028"0.047"Top and Bottom10000000000000000
    5/16", M80.331"0.512"0.031"0.055"Top and Bottom10000000000000000
    3/8", M100.413"0.630"0.039"0.063"Top and Bottom10000000000000000
    7/16", M110.457"0.626"0.039"0.063"Top and Bottom10000000000000000
    1/2", M120.539"0.748"0.043"0.071"Top and Bottom5000000000000000
    9/16", M140.591"0.866"0.047"0.079"Top and Bottom5000000000000000
    5/8", M160.669"0.945"0.051"0.083"Top and Bottom5000000000000000
    3/4", M190.787"1.181"0.059"0.098"Top and Bottom2500000000000000
    7/8", M220.906"1.299"0.059"0.106"Top and Bottom2000000000000000
    1", M251.063"1.496"0.079"0.122"Top and Bottom1000000000000000
    1 1/8", M301.244"1.772"0.079"0.142"Top and Bottom500000000000000
    1 3/8", M361.496"2.126"0.098"0.165"Top and Bottom500000000000000
    M1.6
    0.067"0.126"0.014"0.024"Top and Bottom1000000000000000
    M2
    0.087"0.157"0.014"0.024"Top and Bottom1000000000000000
    M2.5
    0.106"0.189"0.018"0.035"Top and Bottom1000000000000000
    M6
    0.252"0.394"0.024"0.047"Top and Bottom10000000000000000
    M12
    0.512"0.709"0.039"0.067"Top and Bottom5000000000000000
    M18
    0.748"1.063"0.059"0.091"Top and Bottom100000000000000
    M20
    0.827"1.181"0.059"0.098"Top and Bottom1000000000000000
    M24
    1.008"1.417"0.063"0.114"Top and Bottom500000000000000
    M27
    1.126"1.535"0.071"0.122"Top and Bottom500000000000000
     

    Extreme-Vibration-Resistant Wedge Lock Washers
    3D CAD models available

    When it's critical to keep bolted assemblies secure, choose these two-piece lock washers with the tightest grip of all. They stop nuts and screws from loosening in heavy machinery that experiences jarring starts and stops, such as compressors and compactors. Serrations on the outside bite into the fastener and mating surfaces, while wedges on the inside lock the two pieces together. When the nut or screw starts to loosen, the wedges drive more tightly together to maintain tension. You can reuse these washers up to fifteen times, as long as the serrations and wedges are not worn down. They are comparable to NORD-LOCK® or Sherex TEC® washers.
    Wedge Lock
    Image of Product. Bottom orientation. Lock Washers. Wedge-Lock Washer.
    Super-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these washers won't degrade when exposed to harsh weather, salt water, and most chemicals.
    Super-Corrosion-Resistant Black-Oxide 316 Stainless Steel—Combines a finished appearance with the rust resistance of 316 stainless steel. Even if the coating wears off, these washers will hold up in just about any environment, including salt water and most chemicals.
    Super-Corrosion-Resistant Zinc Flake-Coated Steel—With 40 times the corrosion resistance of zinc-plated steel, these withstand rust as well as 316 stainless steel. They have been tested to extreme standards, including 1,000 hours of salt spray. They are similar to Magni-coated washers.
    Black Super-Corrosion-Resistant Zinc Flake-Coated Steel—Typically chosen for their appearance, these washers have a dark, matte coating to create a finished look. With 40 times the corrosion resistance of zinc-plated steel, these withstand rust as well as 316 stainless steel. They have been tested to extreme standards, including 1,000 hours of salt spray. Similar to Magni-coated washers.
    For Screw
    Size
    ID
    OD
    Thk.
    Pkg.
    Qty.
    Pkg.
    Super-Corrosion-Resistant 316 Stainless Steel
    No. 5, M30.130"0.280"0.080" to 0.100"5000000000000000
    No. 6, M3.50.150"0.300"0.080" to 0.100"10000000000000
    No. 6, M3.50.150"0.350"0.080" to 0.100"10000000000000
    No. 8, M40.170"0.300"0.080" to 0.100"500000000000000
    No. 8, M40.170"0.350"0.080" to 0.100"500000000000000
    No. 10, M50.210"0.350"0.080" to 0.100"500000000000000
    No. 10, M50.210"0.430"0.080" to 0.100"500000000000000
    1/4"
    0.280"0.450"0.080" to 0.100"500000000000000
    1/4"
    0.280"0.530"0.080" to 0.100"500000000000000
    5/16", M80.340"0.530"0.070" to 0.090"500000000000000
    5/16", M80.340"0.650"0.070" to 0.090"500000000000000
    3/8"
    0.410"0.650"0.070" to 0.090"500000000000000
    3/8"
    0.410"0.830"0.070" to 0.090"10000000000000
    7/16", M110.450"0.730"0.080" to 0.100"10000000000000
    1/2"
    0.530"0.770"0.070" to 0.090"10000000000000
    1/2"
    0.530"1.000"0.120" to 0.140"10000000000000
    9/16", M140.600"0.910"0.110" to 0.130"10000000000000
    9/16", M140.600"1.210"0.120" to 0.140"10000000000000
    5/8", M160.670"1.000"0.110" to 0.130"10000000000000
    5/8", M160.670"1.210"0.120" to 0.140"10000000000000
    3/4"
    0.790"1.210"0.120" to 0.140"10000000000000
    3/4"
    0.790"1.540"0.120" to 0.140"100000000000000
    7/8", M220.920"1.360"0.120" to 0.140"100000000000000
    7/8", M220.920"1.650"0.120" to 0.140"100000000000000
    1"
    1.100"1.540"0.120" to 0.140"100000000000000
    1"
    1.100"1.910"0.120" to 0.140"100000000000000
    1 1/8", M301.240"1.850"0.260" to 0.280"100000000000000
    1 1/8", M301.240"2.300"0.260" to 0.280"100000000000000
    1 1/4", M331.350"1.910"0.260" to 0.280"100000000000000
    1 3/8", M361.470"2.170"0.260" to 0.280"100000000000000
    1 1/2", M391.590"2.300"0.260" to 0.280"100000000000000
    3", M763.110"4.330"0.340" to 0.360"1000000000000000
    M6
    0.260"0.430"0.080" to 0.100"10000000000000
    M6
    0.260"0.530"0.070" to 0.090"10000000000000
    M10
    0.420"0.650"0.070" to 0.090"10000000000000
    M10
    0.420"0.830"0.070" to 0.090"10000000000000
    M12
    0.510"0.770"0.070" to 0.090"10000000000000
    M12
    0.510"1.000"0.110" to 0.130"10000000000000
    M18
    0.770"1.140"0.120" to 0.140"10000000000000
    M18
    0.770"1.360"0.120" to 0.140"100000000000000
    M20
    0.840"1.210"0.110" to 0.130"10000000000000
    M20
    0.840"1.540"0.120" to 0.140"100000000000000
    M24
    1.000"1.540"0.120" to 0.140"100000000000000
    M24
    1.000"1.910"0.120" to 0.140"100000000000000
    M27
    1.120"1.650"0.260" to 0.280"100000000000000
    M42
    1.700"2.480"0.460" to 0.480"100000000000000
     
    Super-Corrosion-Resistant Black-Oxide 316 Stainless Steel
    No. 5, M30.130"0.280"0.080" to 0.100"50000000000000
    No. 8, M40.170"0.300"0.080" to 0.100"50000000000000
    No. 10, M50.210"0.350"0.080" to 0.100"50000000000000
    M6
    0.260"0.430"0.080" to 0.100"50000000000000
    M8
    0.340"0.650"0.070" to 0.090"10000000000000
    M10
    0.420"0.650"0.070" to 0.090"500000000000000
    M12
    0.510"0.770"0.070" to 0.090"10000000000000
    M16
    0.670"1.210"0.110" to 0.130"100000000000000
     
    Super-Corrosion-Resistant Zinc Flake-Coated Steel
    No. 5, M30.130"0.280"0.060" to 0.080"2000000000000000
    No. 6, M3.50.150"0.300"0.060" to 0.080"2000000000000000
    No. 6, M3.50.150"0.350"0.060" to 0.080"2000000000000000
    No. 8, M40.170"0.300"0.060" to 0.080"2000000000000000
    No. 8, M40.170"0.350"0.060" to 0.080"2000000000000000
    No. 10, M50.210"0.350"0.060" to 0.080"2000000000000000
    No. 10, M50.210"0.430"0.060" to 0.080"2000000000000000
    1/4"
    0.280"0.450"0.090" to 0.110"2000000000000000
    1/4"
    0.280"0.530"0.090" to 0.110"2000000000000000
    5/16", M80.340"0.530"0.090" to 0.110"2000000000000000
    5/16", M80.340"0.650"0.090" to 0.110"2000000000000000
    3/8"
    0.410"0.650"0.090" to 0.110"2000000000000000
    3/8"
    0.410"0.830"0.090" to 0.110"1000000000000000
    7/16", M110.450"0.730"0.090" to 0.110"1000000000000000
    1/2"
    0.530"0.770"0.090" to 0.110"1000000000000000
    1/2"
    0.530"1.000"0.120" to 0.140"800000000000000
    9/16", M140.600"0.910"0.120" to 0.140"1000000000000000
    9/16", M140.600"1.210"0.120" to 0.140"400000000000000
    5/8", M160.670"1.000"0.120" to 0.140"800000000000000
    5/8", M160.670"1.210"0.120" to 0.140"400000000000000
    3/4"
    0.790"1.210"0.120" to 0.140"400000000000000
    3/4"
    0.790"1.540"0.120" to 0.140"20000000000000
    7/8", M220.920"1.360"0.120" to 0.140"20000000000000
    7/8", M220.920"1.650"0.170" to 0.190"200000000000000
    1"
    1.100"1.540"0.120" to 0.140"20000000000000
    1"
    1.100"1.910"0.170" to 0.190"10000000000000
    1 1/8", M301.240"1.850"0.220" to 0.240"10000000000000
    1 1/8", M301.240"2.300"0.250" to 0.270"100000000000000
    1 1/4", M331.350"1.910"0.220" to 0.240"10000000000000
    1 3/8", M361.470"2.170"0.250" to 0.270"100000000000000
    1 1/2", M391.590"2.300"0.250" to 0.270"100000000000000
    1 3/4", M451.820"2.760"0.270" to 0.290"100000000000000
    1 7/8", M451.950"2.950"0.270" to 0.290"100000000000000
    2", M522.110"3.150"0.270" to 0.290"100000000000000
    2 1/4", M562.330"3.350"0.270" to 0.290"100000000000000
    2 1/2", M642.640"3.740"0.270" to 0.290"100000000000000
    M6
    0.260"0.430"0.060" to 0.080"2000000000000000
    M6
    0.260"0.530"0.090" to 0.110"2000000000000000
    M10
    0.420"0.650"0.090" to 0.110"2000000000000000
    M10
    0.420"0.830"0.090" to 0.110"1000000000000000
    M12
    0.510"0.770"0.090" to 0.110"1000000000000000
    M12
    0.510"1.000"0.120" to 0.140"800000000000000
    M18
    0.770"1.140"0.120" to 0.140"400000000000000
    M18
    0.770"1.360"0.120" to 0.140"20000000000000
    M20
    0.840"1.210"0.120" to 0.140"400000000000000
    M20
    0.840"1.540"0.120" to 0.140"20000000000000
    M24
    1.000"1.540"0.120" to 0.140"20000000000000
    M24
    1.000"1.910"0.170" to 0.190"200000000000000
    M27
    1.120"1.650"0.220" to 0.240"10000000000000
    M27
    1.120"1.910"0.220" to 0.240"10000000000000
    M42
    1.700"2.480"0.250" to 0.270"100000000000000
     
    Black Super-Corrosion-Resistant Zinc Flake-Coated Steel
    1/4"
    0.280"0.450"0.090" to 0.110"1000000000000000
    1/4"
    0.280"0.530"0.090" to 0.110"1000000000000000
    5/16", M80.340"0.530"0.090" to 0.110"1000000000000000
    3/8"
    0.410"0.650"0.090" to 0.110"1000000000000000
    3/8"
    0.410"0.830"0.090" to 0.110"500000000000000
    1/2"
    0.530"0.770"0.090" to 0.110"50000000000000
    1/2"
    0.530"1.000"0.120" to 0.140"400000000000000
    5/8", M160.670"1.000"0.120" to 0.140"400000000000000
    3/4"
    0.790"1.210"0.120" to 0.140"400000000000000
    3/4"
    0.790"1.540"0.120" to 0.140"20000000000000
    1"
    1.100"1.540"0.120" to 0.140"20000000000000
    M6
    0.260"0.430"0.060" to 0.080"1000000000000000
    M6
    0.260"0.530"0.090" to 0.110"1000000000000000
    M8
    0.340"0.650"0.090" to 0.110"1000000000000000
    M10
    0.420"0.650"0.090" to 0.110"1000000000000000
    M10
    0.420"0.830"0.090" to 0.110"500000000000000
    M12
    0.510"0.770"0.090" to 0.110"50000000000000
    M12
    0.510"1.000"0.120" to 0.140"400000000000000
    M16
    0.670"1.210"0.120" to 0.140"400000000000000
     
    Spring/Wedge Lock
    Image of Product. Bottom orientation. Lock Washers. Wedge-Lock Washer.
    More flexible than standard wedge lock washers to withstand stronger shocks and vibration. They have a cone shape that expands and compresses to maintain tension in the joint, similar to a heavy duty spring.
    Super-Corrosion-Resistant Zinc Flake-Coated Steel—With 40 times the corrosion resistance of zinc-plated steel, these withstand rust as well as 316 stainless steel. They have been tested to extreme standards, including 1,000 hours of salt spray. They are similar to Magni-coated washers.
    For Screw
    Size
    ID
    OD
    Thk.
    Pkg.
    Qty.
    Pkg.
    Super-Corrosion-Resistant Zinc Flake-Coated Steel
    5/16", M80.340"0.530"0.080" to 0.090"100000000000000
    5/16", M80.340"0.650"0.080" to 0.090"10000000000000
    3/8"
    0.410"0.650"0.090" to 0.100"10000000000000
    1/2"
    0.530"0.770"0.130" to 0.140"10000000000000
    5/8", M160.670"1.000"0.170" to 0.180"10000000000000
    3/4"
    0.790"1.210"0.210" to 0.220"10000000000000
    M6
    0.260"0.430"0.070" to 0.080"10000000000000
    M10
    0.420"0.650"0.100" to 0.110"10000000000000
    M12
    0.510"0.770"0.13"10000000000000
    M20
    0.840"1.210"0.220" to 0.230"10000000000000
     
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