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Metric General Purpose Washers
Use these metric washers to evenly distribute the load under bolt or screw heads and nuts when fastening. They can also act as spacers.
Steel washers are stronger and more wear resistant than stainless steel washers. Blue-dyed steel washers have a unique color so you can tell they're metric at a glance.
Washers that meet ISO 7089, 7090, 7091, and 7092 (formerly DIN 125, 126, and 433), meet international standards for fastener dimensions. The ISO 7091 washers have a slightly rougher surface than a typical flat washer.
For technical drawings and 3-D models, click on a part number.
For Screw Size | ID, mm | OD, mm | Thickness, mm | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
Blue-Dyed Steel | ||||||||
---|---|---|---|---|---|---|---|---|
M3 | 3.0 | 6.0 | 0.4-0.6 | Not Rated | DIN 433 | 20 | 000000000 | 00000 |
M3 | 3.0 | 7.0 | 0.4-0.6 | Not Rated | DIN 125 | 20 | 000000000 | 0000 |
M4 | 4.0 | 8.0 | 0.4-0.6 | Not Rated | DIN 433 | 20 | 000000000 | 0000 |
M4 | 4.3 | 9.0 | 0.7-0.9 | Rockwell B76 | DIN 125; ISO 7089 | 100 | 000000000 | 0000 |
M5 | 5.0 | 9.0 | 0.9-1.1 | Not Rated | DIN 433 | 20 | 000000000 | 0000 |
M5 | 5.3 | 10.0 | 0.9-1.1 | Rockwell B76 | DIN 125; ISO 7089 | 100 | 000000000 | 0000 |
M6 | 6.4 | 12.0 | 1.4-1.8 | Rockwell B76 | DIN 125; ISO 7089 | 100 | 000000000 | 0000 |
M8 | 8.0 | 15.0 | 1.4-1.8 | Not Rated | DIN 433 | 20 | 000000000 | 0000 |
M8 | 8.4 | 16.0 | 1.4-1.8 | Rockwell B76 | DIN 125; ISO 7089 | 100 | 000000000 | 0000 |
M12 | 13.0 | 24.0 | 2.3-2.7 | Rockwell B76 | DIN 125; ISO 7089 | 50 | 000000000 | 0000 |
Metric Oversized Washers
Compared to our general purpose washers, these have exaggerated diameters and/or thicknesses. Use them to cover oversized holes, hold heavy fastening loads, or as spacers and levelers.
Blue-dyed steel washers have a unique color so you can tell they're metric at a glance.
Washers that meet DIN and ISO specifications meet international standards for washer dimensions. ISO 8738 is formerly DIN 1440. ISO 7093 is formerly DIN 9021.
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. | |
Blue-Dyed Steel | ||||||||
---|---|---|---|---|---|---|---|---|
M6 | 6.4 | 17.0 | 2.8-3.3 | Not Rated | DIN 7349 | 20 | 000000000 | 000000 |
M6 | 7.0 | 12.0 | 2.7-4.0 | Rockwell C38 | __ | 25 | 000000000 | 00000 |
M8 | 9.0 | 17.0 | 2.5-3.5 | Rockwell C38 | __ | 50 | 000000000 | 00000 |
M10 | 11.0 | 20.0 | 3.0-4.5 | Rockwell C38 | __ | 25 | 000000000 | 00000 |
M12 | 14.2 | 26.0 | 3.4-3.7 | Rockwell C38 | __ | 10 | 000000000 | 0000 |
M16 | 18.0 | 32.0 | 3.1-4.6 | Rockwell C38 | __ | 5 | 000000000 | 0000 |
M20 | 22.0 | 38.0 | 2.9-3.3 | Rockwell C38 | __ | 5 | 000000000 | 0000 |
M24 | 26.0 | 48.0 | 3.4-4.6 | Rockwell C38 | __ | 5 | 000000000 | 00000 |
M30 | 33.0 | 58.0 | 3.4-4.6 | Rockwell C38 | __ | 1 | 000000000 | 0000 |
M36 | 39.3 | 70.0 | 3.9-4.3 | Rockwell C38 | __ | 1 | 000000000 | 00000 |
Metric Split Lock Washers
As a screw is tightened, these metric washers flatten to add tension to the joint, counteracting fatigue around the joint from small amounts of vibration. This makes them a common choice to prevent fasteners from loosening. However, they resist the least amount of vibration compared to other locking washers. They meet a DIN or ASME standard for split lock washer dimensions.
Standard split lock washers have a left-hand helix that have right-hand threads to prevent clockwise rotation. They have uneven split ends that bite into fasteners for a tight grip but won’t work with hardened surfaces. They hold better than curved or wave washers. These washers are not reusable after tightening.
Steel washers are stronger and resist wear better than zinc-plated steel and stainless steel washers. Use them in dry environments. Blue-dyed steel washers are easy to spot.
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. | |
Blue-Dyed Steel | ||||||||
---|---|---|---|---|---|---|---|---|
Standard | ||||||||
M3 | 3.4 | 6.2 | 0.7-0.9 | Not Rated | DIN 127B | 100 | 000000000 | 00000 |
M4 | 4.5 | 7.6 | 0.8-1.0 | Not Rated | DIN 127B | 100 | 000000000 | 0000 |
M5 | 5.4 | 9.2 | 1.1-1.3 | Not Rated | DIN 127B | 100 | 000000000 | 0000 |
M6 | 6.2 | 12.1 | 2.0 | Rockwell C38 | ASME B18.21.2M | 100 | 000000000 | 00000 |
M6 | 6.5 | 11.8 | 1.5-1.7 | Rockwell C44 | DIN 127B | 50 | 000000000 | 0000 |
M8 | 8.2 | 15.2 | 2.5 | Rockwell C38 | ASME B18.21.2M | 100 | 000000000 | 0000 |
M8 | 8.5 | 14.8 | 1.9-2.1 | Rockwell C44 | DIN 127B | 50 | 000000000 | 0000 |
M10 | 10.2 | 18.0 | 2.9 | Rockwell C38 | ASME B18.21.2M | 50 | 000000000 | 0000 |
M10 | 10.7 | 18.1 | 2.0-2.4 | Rockwell C44 | DIN 127B | 25 | 000000000 | 0000 |
M12 | 12.3 | 21.7 | 3.8 | Rockwell C38 | ASME B18.21.2M | 100 | 000000000 | 00000 |
M12 | 12.7 | 21.1 | 2.3-2.7 | Rockwell C44 | DIN 127B | 25 | 000000000 | 0000 |
M16 | 16.4 | 27.9 | 4.8 | Rockwell C38 | ASME B18.21.2M | 25 | 000000000 | 00000 |
M16 | 17.0 | 27.4 | 3.3-3.7 | Rockwell C44 | DIN 127B | 25 | 000000000 | 00000 |
M20 | 20.5 | 33.8 | 5.7 | Rockwell C38 | ASME B18.21.2M | 10 | 000000000 | 0000 |
M20 | 21.2 | 33.6 | 3.8-4.2 | Rockwell C44 | DIN 127B | 10 | 000000000 | 0000 |
M24 | 24.5 | 40.7 | 7.2 | Rockwell C38 | ASME B18.21.2M | 10 | 000000000 | 00000 |