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Metric Internal-Tooth Lock Washers
Internal teeth dig into the screw head while the smooth outside edge won't snag objects. These washers provide greater vibration resistance than split lock washers. Use with fasteners that have small heads, such as fillister and cheese head screws.
Black-oxide steel washers are mildly corrosion resistant in dry environments.
Zinc-plated steel washers resist corrosion in wet environments.
18-8 stainless steel washers have good chemical resistance and 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. | |
Black-Oxide Steel | ||||||||
---|---|---|---|---|---|---|---|---|
M2 | 2.2 | 4.5 | 0.2-0.4 | Rockwell C35 | DIN 6797 | 100 | 000000000 | 00000 |
M2.5 | 2.7 | 5.5 | 0.2-0.5 | Rockwell C35 | DIN 6797 | 100 | 000000000 | 0000 |
M2.6 | 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 | 3.7 | 7.0 | 0.4-0.6 | 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 |
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 | 50 | 000000000 | 0000 |
M14 | 15.0 | 24.0 | 0.9-1.2 | Rockwell C35 | DIN 6797 | 25 | 000000000 | 0000 |
M16 | 17.0 | 26.0 | 1.0-1.4 | Rockwell C35 | DIN 6797 | 25 | 000000000 | 0000 |
M18 | 19.0 | 30.0 | 1.2-1.5 | Rockwell C35 | DIN 6797 | 10 | 000000000 | 0000 |
M20 | 21.0 | 33.0 | 1.2-1.5 | Rockwell C35 | DIN 6797 | 10 | 000000000 | 00000 |
Zinc-Plated Steel | ||||||||
M2 | 2.2 | 4.5 | 0.2-0.4 | Rockwell C42 | DIN 6797 | 100 | 000000000 | 0000 |
M2.5 | 2.7 | 5.5 | 0.2-0.5 | Rockwell C42 | DIN 6797 | 100 | 000000000 | 0000 |
M3 | 3.2 | 6.0 | 0.3-0.5 | Rockwell C42 | DIN 6797 | 100 | 000000000 | 0000 |
M3.5 | 3.7 | 7.0 | 0.4-0.6 | Rockwell C42 | DIN 6797 | 100 | 000000000 | 0000 |
M4 | 4.3 | 8.0 | 0.4-0.6 | Rockwell C42 | DIN 6797 | 100 | 000000000 | 0000 |
M5 | 5.3 | 10.0 | 0.5-0.7 | Rockwell C42 | DIN 6797 | 100 | 000000000 | 0000 |
M6 | 6.4 | 11.0 | 0.6-0.8 | Rockwell C42 | DIN 6797 | 100 | 000000000 | 0000 |
M7 | 7.4 | 12.5 | 0.7-0.9 | Rockwell C42 | DIN 6797 | 100 | 000000000 | 0000 |
M8 | 8.4 | 15.0 | 0.7-0.9 | Rockwell C42 | DIN 6797 | 100 | 000000000 | 0000 |
M10 | 10.5 | 18.0 | 0.8-1.0 | Rockwell C42 | DIN 6797 | 50 | 000000000 | 0000 |
M12 | 13.0 | 20.5 | 0.9-1.2 | Rockwell C42 | DIN 6797 | 50 | 000000000 | 00000 |
M14 | 15.0 | 24.0 | 0.9-1.2 | Rockwell C42 | DIN 6797 | 25 | 000000000 | 0000 |
M16 | 17.0 | 26.0 | 1.0-1.4 | Rockwell C42 | DIN 6797 | 25 | 000000000 | 0000 |
M18 | 19.0 | 30.0 | 1.2-1.5 | Rockwell C42 | DIN 6797 | 10 | 000000000 | 0000 |
M20 | 21.0 | 33.0 | 1.2-1.5 | Rockwell C42 | DIN 6797 | 10 | 000000000 | 00000 |
M24 | 25.0 | 38.0 | 1.3-1.6 | Rockwell C42 | DIN 6797 | 10 | 000000000 | 00000 |
18-8 Stainless Steel | ||||||||
M2 | 2.2 | 4.5 | 0.2-0.4 | Not Rated | DIN 6797 | 100 | 000000000 | 0000 |
M2.3 | 2.5 | 5.0 | 0.2-0.4 | Not Rated | DIN 6797 | 100 | 000000000 | 0000 |
M2.5 | 2.7 | 5.5 | 0.2-0.5 | Not Rated | DIN 6797 | 100 | 000000000 | 0000 |
M3 | 3.2 | 6.0 | 0.3-0.5 | Not Rated | DIN 6797 | 100 | 000000000 | 0000 |
M3.5 | 3.7 | 7.0 | 0.4-0.6 | Not Rated | DIN 6797 | 100 | 000000000 | 0000 |
M4 | 4.3 | 8.0 | 0.4-0.6 | Not Rated | DIN 6797 | 100 | 000000000 | 0000 |
M5 | 5.3 | 10.0 | 0.5-0.7 | Not Rated | DIN 6797 | 100 | 000000000 | 0000 |
M6 | 6.4 | 11.0 | 0.6-0.8 | Not Rated | DIN 6797 | 100 | 000000000 | 0000 |
M7 | 7.4 | 12.5 | 0.7-0.9 | Not Rated | DIN 6797 | 50 | 000000000 | 00000 |
M8 | 8.4 | 15.0 | 0.7-0.9 | Not Rated | DIN 6797 | 100 | 000000000 | 0000 |
M10 | 10.5 | 18.0 | 0.8-1.0 | Not Rated | DIN 6797 | 50 | 000000000 | 0000 |
M12 | 13.0 | 20.5 | 0.9-1.2 | Not Rated | DIN 6797 | 50 | 000000000 | 0000 |
M14 | 15.0 | 24.0 | 0.9-1.2 | Not Rated | DIN 6797 | 25 | 000000000 | 0000 |
M16 | 17.0 | 26.0 | 1.0-1.4 | Not Rated | DIN 6797 | 25 | 000000000 | 0000 |
M18 | 19.0 | 30.0 | 1.2-1.5 | Not Rated | DIN 6797 | 10 | 000000000 | 0000 |
M20 | 21.0 | 33.0 | 1.2-1.5 | Not Rated | DIN 6797 | 10 | 000000000 | 0000 |
M22 | 23.0 | 36.0 | 1.3-1.6 | Not Rated | DIN 6797 | 10 | 000000000 | 0000 |
M24 | 25.0 | 38.0 | 1.3-1.6 | Not Rated | DIN 6797 | 10 | 000000000 | 00000 |