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About Washers
More
Wedge Lock Washers
Also known as NORD-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.
For technical drawings and 3-D models, click on a part number.
Inch
| For Screw Size | ID | OD | Thick. | Hardness | Pkg. Qty. | Pkg. | |
316 Stainless Steel | |||||||
|---|---|---|---|---|---|---|---|
| 1/4" | 0.280" | 0.450" | 0.080"-0.100" | Rockwell C51 | 5 | 000000000 | 00000 |
| 1/4" | 0.280" | 0.530" | 0.080"-0.100" | Rockwell C51 | 5 | 000000000 | 0000 |
| 3/8" | 0.410" | 0.650" | 0.070"-0.090" | Rockwell C51 | 5 | 000000000 | 00000 |
| 3/8" | 0.410" | 0.830" | 0.070"-0.090" | Rockwell C51 | 1 | 000000000 | 0000 |
| 1/2" | 0.530" | 0.770" | 0.070"-0.090" | Rockwell C51 | 1 | 000000000 | 0000 |
| 1/2" | 0.530" | 1.000" | 0.120"-0.140" | Rockwell C51 | 1 | 000000000 | 0000 |
| 3/4" | 0.790" | 1.210" | 0.120"-0.140" | Rockwell C51 | 1 | 000000000 | 0000 |
| 3/4" | 0.790" | 1.540" | 0.120"-0.140" | Rockwell C51 | 1 | 000000000 | 00000 |
| 1" | 1.100" | 1.540" | 0.120"-0.140" | Rockwell C51 | 1 | 000000000 | 00000 |
| 1" | 1.100" | 1.910" | 0.120"-0.140" | Rockwell C51 | 1 | 000000000 | 00000 |
Zinc-Flake-Coated Steel | |||||||
| 1/4" | 0.280" | 0.450" | 0.090"-0.110" | Rockwell C46 | 20 | 000000000 | 00000 |
| 1/4" | 0.280" | 0.530" | 0.090"-0.110" | Rockwell C46 | 20 | 000000000 | 00000 |
| 3/8" | 0.410" | 0.650" | 0.090"-0.110" | Rockwell C46 | 20 | 000000000 | 00000 |
| 3/8" | 0.410" | 0.830" | 0.090"-0.110" | Rockwell C46 | 10 | 000000000 | 00000 |
| 1/2" | 0.530" | 0.770" | 0.090"-0.110" | Rockwell C46 | 10 | 000000000 | 00000 |
| 1/2" | 0.530" | 1.000" | 0.120"-0.140" | Rockwell C46 | 8 | 000000000 | 00000 |
| 3/4" | 0.790" | 1.210" | 0.120"-0.140" | Rockwell C46 | 4 | 000000000 | 0000 |
| 3/4" | 0.790" | 1.540" | 0.120"-0.140" | Rockwell C46 | 2 | 000000000 | 0000 |
| 1" | 1.100" | 1.540" | 0.120"-0.140" | Rockwell C46 | 2 | 000000000 | 0000 |
| 1" | 1.100" | 1.910" | 0.170"-0.190" | Rockwell C46 | 1 | 000000000 | 0000 |
Metric
| For Screw Size | ID | OD | Thick. | Hardness | Pkg. Qty. | Pkg. | |
316 Stainless Steel | |||||||
|---|---|---|---|---|---|---|---|
| M6 | 0.260" | 0.430" | 0.080"-0.100" | Rockwell C51 | 1 | 000000000 | 00000 |
| M6 | 0.260" | 0.530" | 0.070"-0.090" | Rockwell C51 | 1 | 000000000 | 0000 |
| M10 | 0.420" | 0.650" | 0.070"-0.090" | Rockwell C51 | 1 | 000000000 | 0000 |
| M10 | 0.420" | 0.830" | 0.070"-0.090" | Rockwell C51 | 1 | 000000000 | 0000 |
| M12 | 0.510" | 0.770" | 0.070"-0.090" | Rockwell C51 | 1 | 000000000 | 0000 |
| M12 | 0.510" | 1.000" | 0.110"-0.130" | Rockwell C51 | 1 | 000000000 | 0000 |
| M18 | 0.770" | 1.140" | 0.120"-0.140" | Rockwell C51 | 1 | 000000000 | 0000 |
| M18 | 0.770" | 1.360" | 0.120"-0.140" | Rockwell C51 | 1 | 000000000 | 00000 |
| M20 | 0.840" | 1.210" | 0.110"-0.130" | Rockwell C51 | 1 | 000000000 | 0000 |
| M20 | 0.840" | 1.540" | 0.120"-0.140" | Rockwell C51 | 1 | 000000000 | 00000 |
| M24 | 1.000" | 1.540" | 0.120"-0.140" | Rockwell C51 | 1 | 000000000 | 00000 |
| M24 | 1.000" | 1.910" | 0.120"-0.140" | Rockwell C51 | 1 | 000000000 | 00000 |
| M27 | 1.120" | 1.650" | 0.260"-0.280" | Rockwell C51 | 1 | 000000000 | 00000 |
| M27 | 1.120" | 1.910" | 0.260"-0.280" | Rockwell C51 | 1 | 000000000 | 00000 |
| M42 | 1.700" | 2.480" | 0.460"-0.480" | Rockwell C51 | 1 | 000000000 | 00000 |
| M72 | 2.960" | 4.130" | 0.340"-0.360" | Rockwell C51 | 1 | 000000000 | 000000 |
Zinc-Flake-Coated Steel | |||||||
| M6 | 0.260" | 0.430" | 0.060"-0.080" | Rockwell C46 | 20 | 000000000 | 00000 |
| M6 | 0.260" | 0.530" | 0.090"-0.110" | Rockwell C46 | 20 | 000000000 | 00000 |
| M10 | 0.420" | 0.650" | 0.090"-0.110" | Rockwell C46 | 20 | 000000000 | 00000 |
| M10 | 0.420" | 0.830" | 0.090"-0.110" | Rockwell C46 | 10 | 000000000 | 00000 |
| M12 | 0.510" | 0.770" | 0.090"-0.110" | Rockwell C46 | 10 | 000000000 | 00000 |
| M12 | 0.510" | 1.000" | 0.120"-0.140" | Rockwell C46 | 8 | 000000000 | 00000 |
| M18 | 0.770" | 1.140" | 0.120"-0.140" | Rockwell C46 | 4 | 000000000 | 0000 |
| M18 | 0.770" | 1.360" | 0.120"-0.140" | Rockwell C46 | 2 | 000000000 | 0000 |
| M20 | 0.840" | 1.210" | 0.120"-0.140" | Rockwell C46 | 4 | 000000000 | 0000 |
| M20 | 0.840" | 1.540" | 0.120"-0.140" | Rockwell C46 | 2 | 000000000 | 0000 |
| M24 | 1.000" | 1.540" | 0.120"-0.140" | Rockwell C46 | 2 | 000000000 | 0000 |
| M24 | 1.000" | 1.910" | 0.170"-0.190" | Rockwell C46 | 2 | 000000000 | 00000 |
| M27 | 1.120" | 1.650" | 0.220"-0.240" | Rockwell C46 | 1 | 000000000 | 0000 |
| M27 | 1.120" | 1.910" | 0.220"-0.240" | Rockwell C46 | 1 | 000000000 | 0000 |
| M42 | 1.700" | 2.480" | 0.250"-0.270" | Rockwell C46 | 1 | 000000000 | 00000 |
| M72 | 2.960" | 4.130" | 0.360"-0.380" | Rockwell C46 | 1 | 000000000 | 000000 |
| M85 | 3.470" | 4.720" | 0.360"-0.380" | Rockwell C46 | 1 | 000000000 | 000000 |
| M100 | 4.070" | 5.710" | 0.360"-0.380" | Rockwell C46 | 1 | 000000000 | 000000 |
| M110 | 4.460" | 6.100" | 0.360"-0.380" | Rockwell C46 | 1 | 000000000 | 000000 |
Inch and Metric
| For Screw Size | ID | OD | Thick. | Hardness | Pkg. Qty. | Pkg. | |
316 Stainless Steel | |||||||
|---|---|---|---|---|---|---|---|
| No. 5, M3 | 0.130" | 0.280" | 0.080"-0.100" | Rockwell C51 | 5 | 000000000 | 00000 |
| No. 6, M3.5 | 0.150" | 0.300" | 0.080"-0.100" | Rockwell C51 | 1 | 000000000 | 0000 |
| No. 6, M3.5 | 0.150" | 0.350" | 0.080"-0.100" | Rockwell C51 | 1 | 000000000 | 0000 |
| No. 8, M4 | 0.170" | 0.300" | 0.080"-0.100" | Rockwell C51 | 5 | 000000000 | 0000 |
| No. 8, M4 | 0.170" | 0.350" | 0.080"-0.100" | Rockwell C51 | 5 | 000000000 | 0000 |
| No. 10, M5 | 0.210" | 0.350" | 0.080"-0.100" | Rockwell C51 | 5 | 000000000 | 0000 |
| No. 10, M5 | 0.210" | 0.430" | 0.080"-0.100" | Rockwell C51 | 5 | 000000000 | 0000 |
| 5/16", M8 | 0.340" | 0.530" | 0.070"-0.090" | Rockwell C51 | 5 | 000000000 | 0000 |
| 5/16", M8 | 0.340" | 0.650" | 0.070"-0.090" | Rockwell C51 | 5 | 000000000 | 00000 |
| 7/16", M11 | 0.450" | 0.730" | 0.080"-0.100" | Rockwell C51 | 1 | 000000000 | 0000 |
| 9/16", M14 | 0.600" | 0.910" | 0.110"-0.130" | Rockwell C51 | 1 | 000000000 | 0000 |
| 9/16", M14 | 0.600" | 1.210" | 0.120"-0.140" | Rockwell C51 | 1 | 000000000 | 0000 |
| 5/8", M16 | 0.670" | 1.000" | 0.110"-0.130" | Rockwell C51 | 1 | 000000000 | 0000 |
| 5/8", M16 | 0.670" | 1.210" | 0.120"-0.140" | Rockwell C51 | 1 | 000000000 | 0000 |
| 7/8", M22 | 0.920" | 1.360" | 0.120"-0.140" | Rockwell C51 | 1 | 000000000 | 00000 |
| 7/8", M22 | 0.920" | 1.650" | 0.120"-0.140" | Rockwell C51 | 1 | 000000000 | 00000 |
| 1 1/8", M30 | 1.240" | 1.850" | 0.260"-0.280" | Rockwell C51 | 1 | 000000000 | 00000 |
| 1 1/8", M30 | 1.240" | 2.300" | 0.260"-0.280" | Rockwell C51 | 1 | 000000000 | 00000 |
| 1 1/4", M33 | 1.350" | 1.910" | 0.260"-0.280" | Rockwell C51 | 1 | 000000000 | 00000 |
| 1 3/8", M36 | 1.470" | 2.170" | 0.260"-0.280" | Rockwell C51 | 1 | 000000000 | 00000 |
| 1 1/2", M39 | 1.590" | 2.300" | 0.260"-0.280" | Rockwell C51 | 1 | 000000000 | 00000 |
| 1 3/4", M45 | 1.820" | 2.760" | 0.260"-0.280" | Rockwell C51 | 1 | 000000000 | 000000 |
| 1 7/8", M45 | 1.950" | 2.950" | 0.260"-0.280" | Rockwell C51 | 1 | 000000000 | 000000 |
| 2", M52 | 2.110" | 3.150" | 0.340"-0.360" | Rockwell C51 | 1 | 000000000 | 000000 |
| 2 1/4", M56 | 2.330" | 3.350" | 0.340"-0.360" | Rockwell C51 | 1 | 000000000 | 000000 |
| 2 3/8", M60 | 2.480" | 3.540" | 0.340"-0.360" | Rockwell C51 | 1 | 000000000 | 000000 |
| 2 1/2", M64 | 2.640" | 3.740" | 0.340"-0.360" | Rockwell C51 | 1 | 000000000 | 000000 |
| 2 5/8", M68 | 2.800" | 3.940" | 0.340"-0.360" | Rockwell C51 | 1 | 000000000 | 000000 |
| 3", M76 | 3.110" | 4.330" | 0.340"-0.360" | Rockwell C51 | 1 | 000000000 | 000000 |
| 3 1/8", M80 | 3.270" | 4.530" | 0.340"-0.360" | Rockwell C51 | 1 | 000000000 | 000000 |
Zinc-Flake-Coated Steel | |||||||
| No. 5, M3 | 0.130" | 0.280" | 0.060"-0.080" | Rockwell C46 | 20 | 000000000 | 00000 |
| No. 6, M3.5 | 0.150" | 0.300" | 0.060"-0.080" | Rockwell C46 | 20 | 000000000 | 00000 |
| No. 6, M3.5 | 0.150" | 0.350" | 0.060"-0.080" | Rockwell C46 | 20 | 000000000 | 00000 |
| No. 8, M4 | 0.170" | 0.300" | 0.060"-0.080" | Rockwell C46 | 20 | 000000000 | 00000 |
| No. 8, M4 | 0.170" | 0.350" | 0.060"-0.080" | Rockwell C46 | 20 | 000000000 | 00000 |
| No. 10, M5 | 0.210" | 0.350" | 0.060"-0.080" | Rockwell C46 | 20 | 000000000 | 00000 |
| No. 10, M5 | 0.210" | 0.430" | 0.060"-0.080" | Rockwell C46 | 20 | 000000000 | 00000 |
| 5/16", M8 | 0.340" | 0.530" | 0.090"-0.110" | Rockwell C46 | 20 | 000000000 | 00000 |
| 5/16", M8 | 0.340" | 0.650" | 0.090"-0.110" | Rockwell C46 | 20 | 000000000 | 00000 |
| 7/16", M11 | 0.450" | 0.730" | 0.090"-0.110" | Rockwell C46 | 10 | 000000000 | 00000 |
| 9/16", M14 | 0.600" | 0.910" | 0.120"-0.140" | Rockwell C46 | 10 | 000000000 | 00000 |
| 9/16", M14 | 0.600" | 1.210" | 0.120"-0.140" | Rockwell C46 | 4 | 000000000 | 0000 |
| 5/8", M16 | 0.670" | 1.000" | 0.120"-0.140" | Rockwell C46 | 8 | 000000000 | 00000 |
| 5/8", M16 | 0.670" | 1.210" | 0.120"-0.140" | Rockwell C46 | 4 | 000000000 | 0000 |
| 7/8", M22 | 0.920" | 1.360" | 0.120"-0.140" | Rockwell C46 | 2 | 000000000 | 0000 |
| 7/8", M22 | 0.920" | 1.650" | 0.170"-0.190" | Rockwell C46 | 2 | 000000000 | 00000 |
| 1 1/8", M30 | 1.240" | 1.850" | 0.220"-0.240" | Rockwell C46 | 1 | 000000000 | 0000 |
| 1 1/8", M30 | 1.240" | 2.300" | 0.250"-0.270" | Rockwell C46 | 1 | 000000000 | 0000 |
| 1 1/4", M33 | 1.350" | 1.910" | 0.220"-0.240" | Rockwell C46 | 1 | 000000000 | 0000 |
| 1 1/4", M33 | 1.350" | 2.300" | 0.250"-0.270" | Rockwell C46 | 1 | 000000000 | 0000 |
| 1 3/8", M36 | 1.470" | 2.170" | 0.250"-0.270" | Rockwell C46 | 1 | 000000000 | 0000 |
| 1 3/8", M36 | 1.470" | 2.480" | 0.250"-0.270" | Rockwell C46 | 1 | 000000000 | 00000 |
| 1 1/2", M39 | 1.590" | 2.300" | 0.250"-0.270" | Rockwell C46 | 1 | 000000000 | 0000 |
| 1 3/4", M45 | 1.820" | 2.760" | 0.270"-0.290" | Rockwell C46 | 1 | 000000000 | 00000 |
| 1 7/8", M45 | 1.950" | 2.950" | 0.270"-0.290" | Rockwell C46 | 1 | 000000000 | 00000 |
| 2", M52 | 2.110" | 3.150" | 0.270"-0.290" | Rockwell C46 | 1 | 000000000 | 00000 |
| 2 1/4", M56 | 2.330" | 3.350" | 0.270"-0.290" | Rockwell C46 | 1 | 000000000 | 00000 |
| 2 3/8", M60 | 2.480" | 3.540" | 0.270"-0.290" | Rockwell C46 | 1 | 000000000 | 00000 |
| 2 1/2", M64 | 2.640" | 3.740" | 0.270"-0.290" | Rockwell C46 | 1 | 000000000 | 00000 |
| 2 5/8", M68 | 2.800" | 3.940" | 0.360"-0.380" | Rockwell C46 | 1 | 000000000 | 000000 |
| 3", M76 | 3.110" | 4.330" | 0.360"-0.380" | Rockwell C46 | 1 | 000000000 | 000000 |
| 3 1/8", M80 | 3.270" | 4.530" | 0.360"-0.380" | Rockwell C46 | 1 | 000000000 | 000000 |
| 3 1/2", M90 | 3.640" | 5.120" | 0.360"-0.380" | Rockwell C46 | 1 | 000000000 | 000000 |
| 3 3/4", M95 | 3.830" | 5.310" | 0.360"-0.380" | Rockwell C46 | 1 | 000000000 | 000000 |
| 4", M105 | 4.270" | 5.910" | 0.360"-0.380" | Rockwell C46 | 1 | 000000000 | 000000 |
| 4 1/2", M115 | 4.660" | 6.500" | 0.360"-0.380" | Rockwell C46 | 1 | 000000000 | 000000 |
| 4 3/4", M120 | 4.860" | 6.690" | 0.360"-0.380" | Rockwell C46 | 1 | 000000000 | 000000 |
| 4 7/8", M125 | 5.060" | 6.810" | 0.360"-0.380" | Rockwell C46 | 1 | 000000000 | 000000 |
| 5 1/8", M130 | 5.250" | 7.010" | 0.360"-0.380" | Rockwell C46 | 1 | 000000000 | 000000 |