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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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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Specifications Met Specifications Met |
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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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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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About Washers
More
Split Lock Washers

As a screw is tightened, these washers flatten to add tension to the joint and prevent loosening from small amounts of vibration.
Black-oxide steel washers are mildly corrosion resistant in dry environments.
316 stainless steel washers have excellent resistance to chemicals and salt water. They may be mildly magnetic.
18-8 stainless steel washers have good chemical resistance and may be mildly magnetic.
Zinc- and zinc yellow-chromate plated steel washers are corrosion resistant in wet environments.
Washers that meet ASME B18.21.1 adhere to strict dimensional standards.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
Black-Oxide Carbon Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1 3/8" | 1.408" | 2.219" | 0.344" | Rockwell C38 | ASME B18.21.1 | 1 | 00000000 | 000000 |
316 Stainless Steel | ||||||||
| 1 3/8" | 1.379" | 2.219" | 0.344" | Rockwell C35 | ASME B18.21.1 | 1 | 000000000 | 0000 |
18-8 Stainless Steel | ||||||||
| 1 3/8" | 1.408" | 2.219" | 0.344" | Rockwell C35 | ASME B18.21.1 | 1 | 000000000 | 0000 |
Zinc-Plated Steel | ||||||||
| 1 3/8" | 1.408" | 2.219" | 0.344" | Rockwell C38 | ASME B18.21.1 | 5 | 000000000 | 00000 |
Mil. Spec. Split Lock Washers

Choose these washers for their adherence to strict military standards for material and construction. As a screw is tightened, they flatten to add tension to the joint and prevent loosening from small amounts of vibration.
Cadmium- and zinc yellow-chromate plated steel washers are corrosion resistant in wet environments.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
Zinc Yellow-Chromate Plated Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
MS35338 | ||||||||
| 1 3/8" | 1.397" | 2.219" | 0.344" | Rockwell C38 | ASME B18.21.1; MS35338-56 | 2 | 000000000 | 00000 |



























