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Wedge Lock Washers
These two-piece washers provide more locking power than split, tooth, and spring lock washers. Wedges on the inside lock the two pieces together, and serrations on the exterior grip surfaces to resist loosening from high vibration and shifting. Washers are reusable.
316 stainless steel washers have excellent resistance to chemicals and salt water. They may be mildly magnetic.
Zinc-flake-coated steel washers are corrosion resistant in wet environments.
316 stainless steel and zinc-flake-coated steel washers are comparable to NORD-LOCK® Series washers.
Black zinc-flake-coated steel washers are comparable to Sherex TEC Series washers.
Spring lock washers are comparable to NORD-LOCK® X-Series washers. They withstand vibration better than standard wedge lock washers by combining the locking power of a wedge lock with the clamping force of a spring lock.
For technical drawings and 3-D models, click on a part number.
For Screw Size | ID | OD | Thick. | Washer Type | Hardness | Heat Treatment | Pkg. Qty. | Pkg. | |
316 Stainless Steel | |||||||||
---|---|---|---|---|---|---|---|---|---|
1/4" | 0.280" | 0.450" | 0.080"-0.100" | Wedge Lock | Rockwell C51 | Case Hardened | 5 | 000000000 | 000000 |
1/4" | 0.280" | 0.530" | 0.080"-0.100" | Wedge Lock | Rockwell C51 | Case Hardened | 5 | 000000000 | 00000 |
3/8" | 0.410" | 0.650" | 0.070"-0.090" | Wedge Lock | Rockwell C51 | Case Hardened | 5 | 000000000 | 00000 |
3/8" | 0.410" | 0.830" | 0.070"-0.090" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
1/2" | 0.530" | 0.770" | 0.070"-0.090" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
1/2" | 0.530" | 1.000" | 0.120"-0.140" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
3/4" | 0.790" | 1.210" | 0.120"-0.140" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
3/4" | 0.790" | 1.540" | 0.120"-0.140" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
1" | 1.100" | 1.540" | 0.120"-0.140" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
1" | 1.100" | 1.910" | 0.120"-0.140" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
Zinc-Flake-Coated Steel | |||||||||
1/4" | 0.280" | 0.450" | 0.090"-0.110" | Wedge Lock | Rockwell C46 | __ | 20 | 000000000 | 00000 |
1/4" | 0.280" | 0.530" | 0.090"-0.110" | Wedge Lock | Rockwell C46 | __ | 20 | 000000000 | 00000 |
3/8" | 0.410" | 0.650" | 0.090"-0.100" | Spring Lock, Wedge Lock | Rockwell C46 | __ | 1 | 000000000 | 0000 |
3/8" | 0.410" | 0.650" | 0.090"-0.110" | Wedge Lock | Rockwell C46 | __ | 20 | 000000000 | 00000 |
3/8" | 0.410" | 0.830" | 0.090"-0.110" | Wedge Lock | Rockwell C46 | __ | 10 | 000000000 | 00000 |
1/2" | 0.530" | 0.770" | 0.090"-0.110" | Wedge Lock | Rockwell C46 | __ | 10 | 000000000 | 00000 |
1/2" | 0.530" | 0.770" | 0.130"-0.140" | Spring Lock, Wedge Lock | Rockwell C46 | __ | 1 | 000000000 | 0000 |
1/2" | 0.530" | 1.000" | 0.120"-0.140" | Wedge Lock | Rockwell C46 | __ | 8 | 000000000 | 00000 |
3/4" | 0.790" | 1.210" | 0.120"-0.140" | Wedge Lock | Rockwell C46 | __ | 4 | 000000000 | 00000 |
3/4" | 0.790" | 1.210" | 0.210"-0.220" | Spring Lock, Wedge Lock | Rockwell C46 | __ | 1 | 000000000 | 0000 |
3/4" | 0.790" | 1.540" | 0.120"-0.140" | Wedge Lock | Rockwell C46 | __ | 2 | 000000000 | 0000 |
1" | 1.100" | 1.540" | 0.120"-0.140" | Wedge Lock | Rockwell C46 | __ | 2 | 000000000 | 0000 |
1" | 1.100" | 1.910" | 0.170"-0.190" | Wedge Lock | Rockwell C46 | __ | 1 | 000000000 | 0000 |
Black Zinc-Flake-Coated Steel | |||||||||
1/4" | 0.280" | 0.450" | 0.090"-0.110" | Wedge Lock | Rockwell C48 | __ | 10 | 000000000 | 00000 |
1/4" | 0.280" | 0.530" | 0.090"-0.110" | Wedge Lock | Rockwell C48 | __ | 10 | 000000000 | 00000 |
3/8" | 0.410" | 0.650" | 0.090"-0.110" | Wedge Lock | Rockwell C48 | __ | 10 | 000000000 | 00000 |
3/8" | 0.410" | 0.830" | 0.090"-0.110" | Wedge Lock | Rockwell C48 | __ | 5 | 000000000 | 00000 |
1/2" | 0.530" | 0.770" | 0.090"-0.110" | Wedge Lock | Rockwell C48 | __ | 5 | 000000000 | 0000 |
1/2" | 0.530" | 1.000" | 0.120"-0.140" | Wedge Lock | Rockwell C48 | __ | 4 | 000000000 | 00000 |
3/4" | 0.790" | 1.210" | 0.120"-0.140" | Wedge Lock | Rockwell C48 | __ | 4 | 000000000 | 00000 |
3/4" | 0.790" | 1.540" | 0.120"-0.140" | Wedge Lock | Rockwell C48 | __ | 2 | 000000000 | 0000 |
1" | 1.100" | 1.540" | 0.120"-0.140" | Wedge Lock | Rockwell C48 | __ | 2 | 000000000 | 0000 |
For Screw Size | ID | OD | Thick. | Washer Type | Hardness | Heat Treatment | Pkg. Qty. | Pkg. | |
316 Stainless Steel | |||||||||
---|---|---|---|---|---|---|---|---|---|
M6 | 0.260" | 0.430" | 0.080"-0.100" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
M6 | 0.260" | 0.530" | 0.070"-0.090" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
M10 | 0.420" | 0.650" | 0.070"-0.090" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
M10 | 0.420" | 0.830" | 0.070"-0.090" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
M12 | 0.510" | 0.770" | 0.070"-0.090" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
M12 | 0.510" | 1.000" | 0.110"-0.130" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
M18 | 0.770" | 1.140" | 0.120"-0.140" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
M18 | 0.770" | 1.360" | 0.120"-0.140" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
M20 | 0.840" | 1.210" | 0.110"-0.130" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
M20 | 0.840" | 1.540" | 0.120"-0.140" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
M24 | 1.000" | 1.540" | 0.120"-0.140" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
M24 | 1.000" | 1.910" | 0.120"-0.140" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
M27 | 1.120" | 1.650" | 0.260"-0.280" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
M42 | 1.700" | 2.480" | 0.460"-0.480" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
Black-Oxide 316 Stainless Steel | |||||||||
M6 | 0.260" | 0.430" | 0.080"-0.100" | Wedge Lock | Rockwell C46 | Case Hardened | 5 | 000000000 | 0000 |
M8 | 0.340" | 0.650" | 0.070"-0.090" | Wedge Lock | Rockwell C46 | Case Hardened | 1 | 000000000 | 0000 |
M10 | 0.420" | 0.650" | 0.070"-0.090" | Wedge Lock | Rockwell C46 | Case Hardened | 5 | 000000000 | 00000 |
M12 | 0.510" | 0.770" | 0.070"-0.090" | Wedge Lock | Rockwell C46 | Case Hardened | 1 | 000000000 | 0000 |
M16 | 0.670" | 1.210" | 0.110"-0.130" | Wedge Lock | Rockwell C46 | Case Hardened | 1 | 000000000 | 00000 |
Zinc-Flake-Coated Steel | |||||||||
M6 | 0.260" | 0.430" | 0.060"-0.080" | Wedge Lock | Rockwell C46 | __ | 20 | 000000000 | 00000 |
M6 | 0.260" | 0.430" | 0.070"-0.080" | Spring Lock, Wedge Lock | Rockwell C46 | __ | 1 | 000000000 | 0000 |
M6 | 0.260" | 0.530" | 0.090"-0.110" | Wedge Lock | Rockwell C46 | __ | 20 | 000000000 | 00000 |
M10 | 0.420" | 0.650" | 0.090"-0.110" | Wedge Lock | Rockwell C46 | __ | 20 | 000000000 | 00000 |
M10 | 0.420" | 0.650" | 0.100"-0.110" | Spring Lock, Wedge Lock | Rockwell C46 | __ | 1 | 000000000 | 0000 |
M10 | 0.420" | 0.830" | 0.090"-0.110" | Wedge Lock | Rockwell C46 | __ | 10 | 000000000 | 00000 |
M12 | 0.510" | 0.770" | 0.090"-0.110" | Wedge Lock | Rockwell C46 | __ | 10 | 000000000 | 00000 |
M12 | 0.510" | 0.770" | 0.130"-0.130" | Spring Lock, Wedge Lock | Rockwell C46 | __ | 1 | 000000000 | 0000 |
M12 | 0.510" | 1.000" | 0.120"-0.140" | Wedge Lock | Rockwell C46 | __ | 8 | 000000000 | 00000 |
M18 | 0.770" | 1.140" | 0.120"-0.140" | Wedge Lock | Rockwell C46 | __ | 4 | 000000000 | 00000 |
M18 | 0.770" | 1.360" | 0.120"-0.140" | Wedge Lock | Rockwell C46 | __ | 2 | 000000000 | 0000 |
M20 | 0.840" | 1.210" | 0.120"-0.140" | Wedge Lock | Rockwell C46 | __ | 4 | 000000000 | 00000 |
M20 | 0.840" | 1.210" | 0.220"-0.230" | Spring Lock, Wedge Lock | Rockwell C46 | __ | 1 | 000000000 | 0000 |
M20 | 0.840" | 1.540" | 0.120"-0.140" | Wedge Lock | Rockwell C46 | __ | 2 | 000000000 | 0000 |
M24 | 1.000" | 1.540" | 0.120"-0.140" | Wedge Lock | Rockwell C46 | __ | 2 | 000000000 | 0000 |
M24 | 1.000" | 1.910" | 0.170"-0.190" | Wedge Lock | Rockwell C46 | __ | 2 | 000000000 | 00000 |
M27 | 1.120" | 1.650" | 0.220"-0.240" | Wedge Lock | Rockwell C46 | __ | 1 | 000000000 | 0000 |
M27 | 1.120" | 1.910" | 0.220"-0.240" | Wedge Lock | Rockwell C46 | __ | 1 | 000000000 | 0000 |
M42 | 1.700" | 2.480" | 0.250"-0.270" | Wedge Lock | Rockwell C46 | __ | 1 | 000000000 | 00000 |
Black Zinc-Flake-Coated Steel | |||||||||
M6 | 0.260" | 0.430" | 0.060"-0.080" | Wedge Lock | Rockwell C48 | __ | 10 | 000000000 | 00000 |
M6 | 0.260" | 0.530" | 0.090"-0.110" | Wedge Lock | Rockwell C48 | __ | 10 | 000000000 | 00000 |
M8 | 0.340" | 0.650" | 0.090"-0.110" | Wedge Lock | Rockwell C48 | __ | 10 | 000000000 | 00000 |
M10 | 0.420" | 0.650" | 0.090"-0.110" | Wedge Lock | Rockwell C48 | __ | 10 | 000000000 | 00000 |
M10 | 0.420" | 0.830" | 0.090"-0.110" | Wedge Lock | Rockwell C48 | __ | 5 | 000000000 | 00000 |
M12 | 0.510" | 0.770" | 0.090"-0.110" | Wedge Lock | Rockwell C48 | __ | 5 | 000000000 | 0000 |
M12 | 0.510" | 1.000" | 0.120"-0.140" | Wedge Lock | Rockwell C48 | __ | 4 | 000000000 | 00000 |
M16 | 0.670" | 1.210" | 0.120"-0.140" | Wedge Lock | Rockwell C48 | __ | 4 | 000000000 | 00000 |
For Screw Size | ID | OD | Thick. | Washer Type | Hardness | Heat Treatment | Pkg. Qty. | Pkg. | |
316 Stainless Steel | |||||||||
---|---|---|---|---|---|---|---|---|---|
No. 5, M3 | 0.130" | 0.280" | 0.080"-0.100" | Wedge Lock | Rockwell C51 | Case Hardened | 5 | 000000000 | 000000 |
No. 6, M3.5 | 0.150" | 0.300" | 0.080"-0.100" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
No. 6, M3.5 | 0.150" | 0.350" | 0.080"-0.100" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
No. 8, M4 | 0.170" | 0.300" | 0.080"-0.100" | Wedge Lock | Rockwell C51 | Case Hardened | 5 | 000000000 | 00000 |
No. 8, M4 | 0.170" | 0.350" | 0.080"-0.100" | Wedge Lock | Rockwell C51 | Case Hardened | 5 | 000000000 | 00000 |
No. 10, M5 | 0.210" | 0.350" | 0.080"-0.100" | Wedge Lock | Rockwell C51 | Case Hardened | 5 | 000000000 | 00000 |
No. 10, M5 | 0.210" | 0.430" | 0.080"-0.100" | Wedge Lock | Rockwell C51 | Case Hardened | 5 | 000000000 | 00000 |
5/16", M8 | 0.340" | 0.530" | 0.070"-0.090" | Wedge Lock | Rockwell C51 | Case Hardened | 5 | 000000000 | 00000 |
5/16", M8 | 0.340" | 0.650" | 0.070"-0.090" | Wedge Lock | Rockwell C51 | Case Hardened | 5 | 000000000 | 00000 |
7/16", M11 | 0.450" | 0.730" | 0.080"-0.100" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
9/16", M14 | 0.600" | 0.910" | 0.110"-0.130" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
9/16", M14 | 0.600" | 1.210" | 0.120"-0.140" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
5/8", M16 | 0.670" | 1.000" | 0.110"-0.130" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
5/8", M16 | 0.670" | 1.210" | 0.120"-0.140" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
7/8", M22 | 0.920" | 1.360" | 0.120"-0.140" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
7/8", M22 | 0.920" | 1.650" | 0.120"-0.140" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
1 1/8", M30 | 1.240" | 1.850" | 0.260"-0.280" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
1 1/8", M30 | 1.240" | 2.300" | 0.260"-0.280" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
1 1/4", M33 | 1.350" | 1.910" | 0.260"-0.280" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
1 3/8", M36 | 1.470" | 2.170" | 0.260"-0.280" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
1 1/2", M39 | 1.590" | 2.300" | 0.260"-0.280" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
3", M76 | 3.110" | 4.330" | 0.340"-0.360" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 000000 |
Zinc-Flake-Coated Steel | |||||||||
No. 5, M3 | 0.130" | 0.280" | 0.060"-0.080" | Wedge Lock | Rockwell C46 | __ | 20 | 000000000 | 00000 |
No. 6, M3.5 | 0.150" | 0.300" | 0.060"-0.080" | Wedge Lock | Rockwell C46 | __ | 20 | 000000000 | 00000 |
No. 6, M3.5 | 0.150" | 0.350" | 0.060"-0.080" | Wedge Lock | Rockwell C46 | __ | 20 | 000000000 | 00000 |
No. 8, M4 | 0.170" | 0.300" | 0.060"-0.080" | Wedge Lock | Rockwell C46 | __ | 20 | 000000000 | 00000 |
No. 8, M4 | 0.170" | 0.350" | 0.060"-0.080" | Wedge Lock | Rockwell C46 | __ | 20 | 000000000 | 00000 |
No. 10, M5 | 0.210" | 0.350" | 0.060"-0.080" | Wedge Lock | Rockwell C46 | __ | 20 | 000000000 | 00000 |
No. 10, M5 | 0.210" | 0.430" | 0.060"-0.080" | Wedge Lock | Rockwell C46 | __ | 20 | 000000000 | 00000 |
5/16", M8 | 0.340" | 0.530" | 0.080"-0.090" | Spring Lock, Wedge Lock | Rockwell C46 | __ | 1 | 000000000 | 0000 |
5/16", M8 | 0.340" | 0.530" | 0.090"-0.110" | Wedge Lock | Rockwell C46 | __ | 20 | 000000000 | 00000 |
5/16", M8 | 0.340" | 0.650" | 0.080"-0.090" | Spring Lock, Wedge Lock | Rockwell C46 | __ | 1 | 000000000 | 0000 |
5/16", M8 | 0.340" | 0.650" | 0.090"-0.110" | Wedge Lock | Rockwell C46 | __ | 20 | 000000000 | 00000 |
7/16", M11 | 0.450" | 0.730" | 0.090"-0.110" | Wedge Lock | Rockwell C46 | __ | 10 | 000000000 | 00000 |
9/16", M14 | 0.600" | 0.910" | 0.120"-0.140" | Wedge Lock | Rockwell C46 | __ | 10 | 000000000 | 00000 |
9/16", M14 | 0.600" | 1.210" | 0.120"-0.140" | Wedge Lock | Rockwell C46 | __ | 4 | 000000000 | 00000 |
5/8", M16 | 0.670" | 1.000" | 0.120"-0.140" | Wedge Lock | Rockwell C46 | __ | 8 | 000000000 | 00000 |
5/8", M16 | 0.670" | 1.000" | 0.170"-0.180" | Spring Lock, Wedge Lock | Rockwell C46 | __ | 1 | 000000000 | 0000 |
5/8", M16 | 0.670" | 1.210" | 0.120"-0.140" | Wedge Lock | Rockwell C46 | __ | 4 | 000000000 | 00000 |
7/8", M22 | 0.920" | 1.360" | 0.120"-0.140" | Wedge Lock | Rockwell C46 | __ | 2 | 000000000 | 0000 |
7/8", M22 | 0.920" | 1.650" | 0.170"-0.190" | Wedge Lock | Rockwell C46 | __ | 2 | 000000000 | 00000 |
1 1/8", M30 | 1.240" | 1.850" | 0.220"-0.240" | Wedge Lock | Rockwell C46 | __ | 1 | 000000000 | 0000 |
1 1/8", M30 | 1.240" | 2.300" | 0.250"-0.270" | Wedge Lock | Rockwell C46 | __ | 1 | 000000000 | 00000 |
1 1/4", M33 | 1.350" | 1.910" | 0.220"-0.240" | Wedge Lock | Rockwell C46 | __ | 1 | 000000000 | 0000 |
1 3/8", M36 | 1.470" | 2.170" | 0.250"-0.270" | Wedge Lock | Rockwell C46 | __ | 1 | 000000000 | 00000 |
1 1/2", M39 | 1.590" | 2.300" | 0.250"-0.270" | Wedge Lock | Rockwell C46 | __ | 1 | 000000000 | 00000 |
1 3/4", M45 | 1.820" | 2.760" | 0.270"-0.290" | Wedge Lock | Rockwell C46 | __ | 1 | 000000000 | 00000 |
1 7/8", M45 | 1.950" | 2.950" | 0.270"-0.290" | Wedge Lock | Rockwell C46 | __ | 1 | 000000000 | 00000 |
2", M52 | 2.110" | 3.150" | 0.270"-0.290" | Wedge Lock | Rockwell C46 | __ | 1 | 000000000 | 00000 |
2 1/4", M56 | 2.330" | 3.350" | 0.270"-0.290" | Wedge Lock | Rockwell C46 | __ | 1 | 000000000 | 00000 |
2 1/2", M64 | 2.640" | 3.740" | 0.270"-0.290" | Wedge Lock | Rockwell C46 | __ | 1 | 000000000 | 00000 |
Black-Oxide 316 Stainless Steel | |||||||||
No. 5, M3 | 0.130" | 0.280" | 0.080"-0.100" | Wedge Lock | Rockwell C46 | Case Hardened | 5 | 000000000 | 0000 |
No. 8, M4 | 0.170" | 0.300" | 0.080"-0.100" | Wedge Lock | Rockwell C46 | Case Hardened | 5 | 000000000 | 0000 |
No. 10, M5 | 0.210" | 0.350" | 0.080"-0.100" | Wedge Lock | Rockwell C46 | Case Hardened | 5 | 000000000 | 0000 |
Black Zinc-Flake-Coated Steel | |||||||||
5/16", M8 | 0.340" | 0.530" | 0.090"-0.110" | Wedge Lock | Rockwell C48 | __ | 10 | 000000000 | 00000 |
5/8", M16 | 0.670" | 1.000" | 0.120"-0.140" | Wedge Lock | Rockwell C48 | __ | 4 | 000000000 | 00000 |