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Metric External-Tooth Lock Washers
Teeth on the outside edge of these washers bite into the screw head and joint for a tight grip. Use with fasteners that have heads large enough to make contact with the teeth, such as pan, button, and binding head screws.
Zinc-plated steel washers are corrosion resistant in wet environments.
18-8 stainless steel washers have good chemical resistance and may be mildly magnetic.
316 stainless steel washers have excellent resistance to chemicals and salt water. They may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.
For Screw Size | ID, mm | OD, mm | Thick., mm | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | ||||||||
---|---|---|---|---|---|---|---|---|
M2 | 2.3 | 4.5 | 0.2-0.4 | Rockwell C35 | DIN 6797 | 100 | 000000000 | 00000 |
M2.5 | 2.8 | 5.5 | 0.3-0.5 | Rockwell C35 | DIN 6797 | 100 | 000000000 | 0000 |
M3 | 3.2 | 6.0 | 0.3-0.5 | Rockwell C35 | DIN 6797 | 100 | 000000000 | 0000 |
M3.5 | 3.9 | 7.0 | 0.9-1.2 | Rockwell C35 | DIN 6797 | 100 | 000000000 | 0000 |
M4 | 4.3 | 8.0 | 0.4-0.6 | Rockwell C35 | DIN 6797 | 100 | 000000000 | 0000 |
M5 | 5.3 | 10.0 | 0.5-0.7 | Rockwell C35 | DIN 6797 | 100 | 000000000 | 0000 |
M6 | 6.4 | 11.0 | 0.6-0.8 | Rockwell C35 | DIN 6797 | 100 | 000000000 | 0000 |
M7 | 7.4 | 12.5 | 0.7-0.9 | Rockwell C35 | DIN 6797 | 25 | 000000000 | 0000 |
M8 | 8.4 | 15.0 | 0.7-0.9 | Rockwell C35 | DIN 6797 | 100 | 000000000 | 0000 |
M10 | 10.5 | 18.0 | 0.8-1.0 | Rockwell C35 | DIN 6797 | 50 | 000000000 | 0000 |
M12 | 13.0 | 20.5 | 0.9-1.2 | Rockwell C35 | DIN 6797 | 25 | 000000000 | 0000 |
M14 | 15.0 | 24.0 | 0.9-1.2 | Rockwell C35 | DIN 6797 | 25 | 000000000 | 0000 |
M16 | 17.3 | 26.0 | 1.0-1.4 | Rockwell C35 | DIN 6797 | 25 | 000000000 | 0000 |
M18 | 19.0 | 30.0 | 1.2-1.6 | Rockwell C35 | DIN 6797 | 5 | 000000000 | 0000 |
M20 | 21.0 | 33.0 | 1.2-1.6 | Rockwell C35 | DIN 6797 | 5 | 000000000 | 0000 |
M22 | 23.0 | 36.0 | 1.3-1.7 | Rockwell C35 | DIN 6797 | 5 | 000000000 | 0000 |
M24 | 25.0 | 38.0 | 1.3-1.7 | Rockwell C35 | DIN 6797 | 5 | 000000000 | 0000 |
M30 | 31.0 | 48.0 | 1.4-1.8 | Rockwell C35 | DIN 6797 | 5 | 000000000 | 0000 |
18-8 Stainless Steel | ||||||||
M2 | 2.3 | 4.5 | 0.2-0.4 | __ | DIN 6797 | 100 | 000000000 | 0000 |
M2.5 | 2.8 | 5.5 | 0.3-0.5 | __ | DIN 6797 | 100 | 000000000 | 0000 |
M3 | 3.2 | 6.0 | 0.3-0.5 | __ | DIN 6797 | 100 | 000000000 | 0000 |
M3.5 | 3.9 | 7.0 | 0.4-0.6 | __ | DIN 6797 | 100 | 000000000 | 0000 |
M4 | 4.3 | 8.0 | 0.4-0.6 | __ | DIN 6797 | 100 | 000000000 | 0000 |
M5 | 5.3 | 10.0 | 0.5-0.7 | __ | DIN 6797 | 100 | 000000000 | 0000 |
M6 | 6.4 | 11.0 | 0.6-0.8 | __ | DIN 6797 | 100 | 000000000 | 0000 |
M7 | 7.4 | 12.5 | 0.7-0.9 | __ | DIN 6797 | 100 | 000000000 | 0000 |
M8 | 8.4 | 15.0 | 0.7-0.9 | __ | DIN 6797 | 100 | 000000000 | 0000 |
M10 | 10.5 | 18.0 | 0.8-1.0 | __ | DIN 6797 | 100 | 000000000 | 0000 |
M12 | 13.0 | 20.5 | 0.9-1.2 | __ | DIN 6797 | 50 | 000000000 | 0000 |
M14 | 15.0 | 24.0 | 0.9-1.2 | __ | DIN 6797 | 50 | 000000000 | 00000 |
M16 | 17.3 | 26.0 | 1.0-1.4 | __ | DIN 6797 | 50 | 000000000 | 00000 |
M18 | 19.0 | 30.0 | 1.2-1.6 | __ | DIN 6797 | 10 | 000000000 | 0000 |
M20 | 21.0 | 33.0 | 1.2-1.6 | __ | DIN 6797 | 10 | 000000000 | 0000 |
M22 | 23.0 | 36.0 | 1.3-1.7 | __ | DIN 6797 | 10 | 000000000 | 0000 |
M24 | 25.0 | 38.0 | 1.3-1.7 | __ | DIN 6797 | 10 | 000000000 | 0000 |
M30 | 31.0 | 48.0 | 1.4-1.8 | __ | DIN 6797 | 10 | 000000000 | 00000 |
316 Stainless Steel | ||||||||
M3 | 3.2 | 6.0 | 0.3-0.5 | __ | DIN 6797 | 5 | 000000000 | 0000 |
M4 | 4.3 | 8.0 | 0.4-0.6 | __ | DIN 6797 | 5 | 000000000 | 0000 |
M5 | 5.3 | 10.0 | 0.5-0.7 | __ | DIN 6797 | 5 | 000000000 | 0000 |
M6 | 6.4 | 11.0 | 0.6-0.8 | __ | DIN 6797 | 5 | 000000000 | 0000 |
M8 | 8.4 | 15.0 | 0.7-0.9 | __ | DIN 6797 | 5 | 000000000 | 00000 |
M10 | 10.5 | 18.0 | 0.8-1.0 | __ | DIN 6797 | 1 | 000000000 | 0000 |
M12 | 13.0 | 20.5 | 0.9-1.2 | __ | DIN 6797 | 1 | 000000000 | 00000 |
M14 | 15.0 | 24.0 | 0.9-1.2 | __ | DIN 6797 | 1 | 000000000 | 00000 |
M16 | 17.3 | 26.0 | 1.0-1.4 | __ | DIN 6797 | 1 | 000000000 | 00000 |
M20 | 21.0 | 33.0 | 1.2-1.6 | __ | DIN 6797 | 1 | 000000000 | 00000 |