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DFARS (Defense Acquisition Regulations Supplement) DFARS (DefenseAcquisition Regulations Supplement)  |
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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 | Heat Treatment | Pkg. Qty. | Pkg. | |
316 Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/4" | 0.280" | 0.450" | 0.080"-0.100" | Rockwell C51 | Case Hardened | 5 | 000000000 | 00000 |
| 1/4" | 0.280" | 0.530" | 0.080"-0.100" | Rockwell C51 | Case Hardened | 5 | 000000000 | 00000 |
| 3/8" | 0.410" | 0.650" | 0.070"-0.090" | Rockwell C51 | Case Hardened | 5 | 000000000 | 00000 |
| 3/8" | 0.410" | 0.830" | 0.070"-0.090" | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
| 1/2" | 0.530" | 0.770" | 0.070"-0.090" | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
| 1/2" | 0.530" | 1.000" | 0.120"-0.140" | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
| 3/4" | 0.790" | 1.210" | 0.120"-0.140" | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
| 3/4" | 0.790" | 1.540" | 0.120"-0.140" | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
| 1" | 1.100" | 1.540" | 0.120"-0.140" | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
| 1" | 1.100" | 1.910" | 0.120"-0.140" | Rockwell C51 | Case Hardened | 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 |
Black Steel | ||||||||
| 1/4" | 0.280" | 0.450" | 0.090"-0.110" | Rockwell C48 | __ | 10 | 000000000 | 00000 |
| 1/4" | 0.280" | 0.530" | 0.090"-0.110" | Rockwell C48 | __ | 10 | 000000000 | 00000 |
| 3/8" | 0.410" | 0.650" | 0.090"-0.110" | Rockwell C48 | __ | 10 | 000000000 | 00000 |
| 3/8" | 0.410" | 0.830" | 0.090"-0.110" | Rockwell C48 | __ | 5 | 000000000 | 00000 |
| 1/2" | 0.530" | 0.770" | 0.090"-0.110" | Rockwell C48 | __ | 5 | 000000000 | 0000 |
| 1/2" | 0.530" | 1.000" | 0.120"-0.140" | Rockwell C48 | __ | 4 | 000000000 | 00000 |
| 3/4" | 0.790" | 1.210" | 0.120"-0.140" | Rockwell C48 | __ | 4 | 000000000 | 0000 |
| 3/4" | 0.790" | 1.540" | 0.120"-0.140" | Rockwell C48 | __ | 2 | 000000000 | 0000 |
| 1" | 1.100" | 1.540" | 0.120"-0.140" | Rockwell C48 | __ | 2 | 000000000 | 0000 |
Metric
| For Screw Size | ID | OD | Thick. | Hardness | Heat Treatment | Pkg. Qty. | Pkg. | |
316 Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| M6 | 0.260" | 0.430" | 0.080"-0.100" | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
| M6 | 0.260" | 0.530" | 0.070"-0.090" | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
| M10 | 0.420" | 0.650" | 0.070"-0.090" | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
| M10 | 0.420" | 0.830" | 0.070"-0.090" | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
| M12 | 0.510" | 0.770" | 0.070"-0.090" | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
| M12 | 0.510" | 1.000" | 0.110"-0.130" | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
| M18 | 0.770" | 1.140" | 0.120"-0.140" | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
| M18 | 0.770" | 1.360" | 0.120"-0.140" | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
| M20 | 0.840" | 1.210" | 0.110"-0.130" | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
| M20 | 0.840" | 1.540" | 0.120"-0.140" | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
| M24 | 1.000" | 1.540" | 0.120"-0.140" | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
| M24 | 1.000" | 1.910" | 0.120"-0.140" | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
| M27 | 1.120" | 1.650" | 0.260"-0.280" | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
| M27 | 1.120" | 1.910" | 0.260"-0.280" | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
| M42 | 1.700" | 2.480" | 0.460"-0.480" | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
| M72 | 2.960" | 4.130" | 0.340"-0.360" | Rockwell C51 | Case Hardened | 1 | 000000000 | 000000 |
Black-Oxide 316 Stainless Steel | ||||||||
| M8 | 0.340" | 0.650" | 0.070"-0.090" | Rockwell C40 | Case Hardened | 1 | 000000000 | 0000 |
| M16 | 0.670" | 1.210" | 0.110"-0.130" | Rockwell C40 | Case Hardened | 1 | 000000000 | 0000 |
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 |
Black Steel | ||||||||
| M6 | 0.260" | 0.430" | 0.060"-0.080" | Rockwell C48 | __ | 10 | 000000000 | 00000 |
| M6 | 0.260" | 0.530" | 0.090"-0.110" | Rockwell C48 | __ | 10 | 000000000 | 00000 |
| M8 | 0.340" | 0.650" | 0.090"-0.110" | Rockwell C48 | __ | 10 | 000000000 | 00000 |
| M10 | 0.420" | 0.650" | 0.090"-0.110" | Rockwell C48 | __ | 10 | 000000000 | 00000 |
| M10 | 0.420" | 0.830" | 0.090"-0.110" | Rockwell C48 | __ | 5 | 000000000 | 00000 |
| M12 | 0.510" | 0.770" | 0.090"-0.110" | Rockwell C48 | __ | 5 | 000000000 | 0000 |
| M12 | 0.510" | 1.000" | 0.120"-0.140" | Rockwell C48 | __ | 4 | 000000000 | 00000 |
| M16 | 0.670" | 1.210" | 0.120"-0.140" | Rockwell C48 | __ | 4 | 000000000 | 0000 |
Inch and Metric
| For Screw Size | ID | OD | Thick. | Hardness | Heat Treatment | Pkg. Qty. | Pkg. | |
316 Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| No. 5, M3 | 0.130" | 0.280" | 0.080"-0.100" | Rockwell C51 | Case Hardened | 5 | 000000000 | 00000 |
| No. 6, M3.5 | 0.150" | 0.300" | 0.080"-0.100" | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
| No. 6, M3.5 | 0.150" | 0.350" | 0.080"-0.100" | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
| No. 8, M4 | 0.170" | 0.300" | 0.080"-0.100" | Rockwell C51 | Case Hardened | 5 | 000000000 | 0000 |
| No. 8, M4 | 0.170" | 0.350" | 0.080"-0.100" | Rockwell C51 | Case Hardened | 5 | 000000000 | 0000 |
| No. 10, M5 | 0.210" | 0.350" | 0.080"-0.100" | Rockwell C51 | Case Hardened | 5 | 000000000 | 0000 |
| No. 10, M5 | 0.210" | 0.430" | 0.080"-0.100" | Rockwell C51 | Case Hardened | 5 | 000000000 | 0000 |
| 5/16", M8 | 0.340" | 0.530" | 0.070"-0.090" | Rockwell C51 | Case Hardened | 5 | 000000000 | 00000 |
| 5/16", M8 | 0.340" | 0.650" | 0.070"-0.090" | Rockwell C51 | Case Hardened | 5 | 000000000 | 00000 |
| 7/16", M11 | 0.450" | 0.730" | 0.080"-0.100" | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
| 9/16", M14 | 0.600" | 0.910" | 0.110"-0.130" | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
| 9/16", M14 | 0.600" | 1.210" | 0.120"-0.140" | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
| 5/8", M16 | 0.670" | 1.000" | 0.110"-0.130" | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
| 5/8", M16 | 0.670" | 1.210" | 0.120"-0.140" | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000 |
| 7/8", M22 | 0.920" | 1.360" | 0.120"-0.140" | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
| 7/8", M22 | 0.920" | 1.650" | 0.120"-0.140" | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
| 1 1/8", M30 | 1.240" | 1.850" | 0.260"-0.280" | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
| 1 1/8", M30 | 1.240" | 2.300" | 0.260"-0.280" | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
| 1 1/4", M33 | 1.350" | 1.910" | 0.260"-0.280" | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
| 1 3/8", M36 | 1.470" | 2.170" | 0.260"-0.280" | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
| 1 1/2", M39 | 1.590" | 2.300" | 0.260"-0.280" | Rockwell C51 | Case Hardened | 1 | 000000000 | 00000 |
| 1 3/4", M45 | 1.820" | 2.760" | 0.260"-0.280" | Rockwell C51 | Case Hardened | 1 | 000000000 | 000000 |
| 1 7/8", M45 | 1.950" | 2.950" | 0.260"-0.280" | Rockwell C51 | Case Hardened | 1 | 000000000 | 000000 |
| 2", M52 | 2.110" | 3.150" | 0.340"-0.360" | Rockwell C51 | Case Hardened | 1 | 000000000 | 000000 |
| 2 1/4", M56 | 2.330" | 3.350" | 0.340"-0.360" | Rockwell C51 | Case Hardened | 1 | 000000000 | 000000 |
| 2 3/8", M60 | 2.480" | 3.540" | 0.340"-0.360" | Rockwell C51 | Case Hardened | 1 | 000000000 | 000000 |
| 2 1/2", M64 | 2.640" | 3.740" | 0.340"-0.360" | Rockwell C51 | Case Hardened | 1 | 000000000 | 000000 |
| 2 5/8", M68 | 2.800" | 3.940" | 0.340"-0.360" | Rockwell C51 | Case Hardened | 1 | 000000000 | 000000 |
| 3", M76 | 3.110" | 4.330" | 0.340"-0.360" | Rockwell C51 | Case Hardened | 1 | 000000000 | 000000 |
| 3 1/8", M80 | 3.270" | 4.530" | 0.340"-0.360" | Rockwell C51 | Case Hardened | 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 |
Black Steel | ||||||||
| 5/16", M8 | 0.340" | 0.530" | 0.090"-0.110" | Rockwell C48 | __ | 10 | 000000000 | 00000 |
| 5/8", M16 | 0.670" | 1.000" | 0.120"-0.140" | Rockwell C48 | __ | 4 | 000000000 | 00000 |