System of Measurement System of Measurement |
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For Screw Size For Screw Size |
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Material Material |
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Finish Finish |
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Washer Type Washer Type |
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| Split Lock | |
Thickness Thickness | Show |
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Thickness Thickness | Hide |
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Hardness Hardness |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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About Washers
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Metric Split Lock Washers








As you tighten a bolt, these metric washers flatten to add tension to the threaded joint and prevent loosening from small amounts of vibration. They meet a DIN or ASME standard for split lock washer dimensions.
Curved and wave split lock washers can be used with fasteners that have right- or left-hand threads to prevent clockwise and counterclockwise rotation. These washers are reusable—they retain their shape when untightened and will not damage fasteners. Wave washers touch fasteners at more points, so they grip tighter than curved washers. Their shape also compensates for uneven surfaces and tolerance variations.
Stainless steel washers resist corrosion better than steel and are nearly as strong. 18-8 stainless steel washers withstand humid, damp, and washdown environments but will corrode when exposed to salt water and other chlorine solutions. Stronger and more durable than stainless steel, zinc-plated and yellow zinc-plated steel washers withstand wet environments. However, they will corrode in salt water and chlorine solutions. The zinc plating temporarily protects against rust, but once it wears off, the steel will rust.
Steel washers are stronger and resist wear better than zinc-plated steel and stainless steel washers. Use them in dry environments. Black-oxide steel washers have a black residue that forms from being heat treated; the color will wear away over time.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID, mm | OD, mm | Thick., mm | Overall Ht., mm | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Curved | |||||||||
| M10 | 10.2 | 18.1 | 1.7 | 2.9 | Not Rated | DIN 128A | 50 | 000000000 | 000000 |
Wave | |||||||||
| M10 | 10.7 | 18.1 | 1.7 | 3.1 | Not Rated | DIN 128B | 25 | 000000000 | 00000 |
Zinc-Plated Steel | |||||||||
Curved | |||||||||
| M10 | 10.2 | 18.1 | 1.7 | 2.9 | Rockwell C44 | DIN 128A | 100 | 000000000 | 00000 |
Wave | |||||||||
| M10 | 10.2 | 18.1 | 1.7 | 2.9 | Rockwell C44 | DIN 128B | 50 | 000000000 | 00000 |
Yellow Zinc-Plated Steel | |||||||||
Curved | |||||||||
| M10 | 10.2 | 18.1 | 1.7 | 2.9 | Rockwell C44 | DIN 128A | 100 | 000000000 | 00000 |
Black-Oxide Steel | |||||||||
Curved | |||||||||
| M10 | 10.2 | 18.1 | 1.7 | 2.9 | Rockwell C44 | DIN 128A | 25 | 000000000 | 00000 |



























