Washer Type Washer Type |
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Flat | Split Lock |
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Spring Lock |
System of Measurement System of Measurement |
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For Screw Size For Screw Size | Show |
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For Screw Size For Screw Size | Hide |
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Thickness Thickness |
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Hardness Hardness |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Split Lock Washer Type Split Lock Washer Type |
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![]() | Standard |
Spring Lock Washer Shape Spring Lock Washer Shape |
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![]() | Conical |
Finish Finish |
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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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For Bearing Nut Face Style For Bearing Nut Face Style |
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For Bearing Nut Specifications Met For Bearing NutSpecifications Met |
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About Washers
More
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.
Standard split lock washers match with fasteners 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.
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.
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 | ||||||||
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Standard | ||||||||
M48 | 50.5 | 75.0 | 6.8-7.2 | Rockwell C44 | DIN 127B | 1 | 000000000 | 000000 |
Metric Split Lock Washers for Socket Head Screws

Also known as high-collar lock washers, these have smaller outside diameters than standard split lock washers to fit neatly under socket head cap screws. As a screw is tightened, they flatten to add tension to the joint and prevent loosening from small amounts of vibration.
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. | |
Steel with Black-Oxide Finish | ||||||||
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M48 | 50.5 | 67.0 | 7.7-8.3 | Rockwell C44 | DIN 7980 | 1 | 000000000 | 000000 |
Spring Lock Washers for Slotted Bearing Nuts


Designed for use with bearing nuts, these lock washers have a conical shape that presses like a spring against bearings, bushings, gears, and pulleys to hold them in place on your threaded shaft or spindle. They also have an inner tab that sits in the shaft or spindle’s keyway to prevent the nut from loosening. Made of steel, they’re strong and flexible.
DIN 462 and DIN 5406 washers meet international standards for lock washer dimensions. Pair DIN 462 washers with DIN 1804 bearing nuts, and DIN 5406 washers with DIN 981 bearing nuts.
For technical drawings and 3-D models, click on a part number.
Tab | |||||||||||
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For Screw Size | ID, mm | OD, mm | Thick., mm | Wd., mm | Dp., mm | Overall Ht., mm | Hardness | Specifications Met | For Bearing Nut Specifications Met | Each | |
Steel | |||||||||||
For Stepped Nuts | |||||||||||
M48 | 48.0 | 75.0 | 1.20 | 8.0 | 2.5 | 5.0 | Not Rated | DIN 462 | DIN 1804 | 000000000 | 00000 |
Metal Sealing Washers

Also known as crush washers, these compress when tightened to form a tighter, more durable seal than rubber washers. They are commonly used to seal fluids such as oil and fuel. Washers are not reusable.
Copper washers are corrosion resistant in wet environments, nonmagnetic, and electrically conductive.
For technical drawings and 3-D models, click on a part number.
For Screw Size | ID, mm | OD, mm | Thick., mm | Specifications Met | Pkg. Qty. | Pkg. | |
Copper | |||||||
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M48 | 48.3 | 54.9 | 1.8-2.2 | DIN 7603 | 1 | 000000000 | 000000 |