System of Measurement System of Measurement |
|---|
|
Material Material |
|---|
|
|
Finish Finish |
|---|
|
Washer Type Washer Type |
|---|
 |  |
| Sleeve | Split Lock |
Thickness Thickness | Show |
|---|
|
Thickness Thickness | Hide |
|---|
Specifications Met Specifications Met |
|---|
Hardness Hardness |
|---|
|
RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
|---|
|
Overall Height Overall Height |
|---|
|
REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
|---|
|
DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
|---|
Fastener Strength Grade/Class Fastener StrengthGrade/Class |
|---|
Maximum Temperature Maximum Temperature |
|---|
|
Minimum Temperature Minimum Temperature |
|---|
|
Color Color |
|---|
 | Off-White |
About Washers
More
Electrical-Insulating Sleeve Washers
Also known as shoulder or insulator washers, these nonmetal washers block electrical current and prevent galvanic corrosion from mating different types of metal.
Nylon 6/6 washers have good abrasion resistance. Exposure to moisture may cause them to expand.
For technical drawings and 3-D models, click on a part number.
Temperature Range, °F | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Screw Size | ID | OD | Sleeve OD | Thick. | Overall Ht. | Min. | Max. | Hardness | Color | Pkg. Qty. | Pkg. | |
Nylon 6/6 Plastic | ||||||||||||
| 3/8" | 0.378" | 0.755" | 0.505" | 0.078" | 0.328" | -40° | 180° | Rockwell R108 | Off-White | 100 | 000000000 | 000000 |
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.
Hot-dipped galvanized steel washers are 10 times as corrosion resistant as zinc- and zinc yellow-chromate plated washers.
Zinc-flake-coated steel washers are 40 times as corrosion resistant as zinc-plated washers and comparable to Magni-coated washers.
Aluminum washers are lightweight and corrosion resistant in wet environments.
Bronze washers are corrosion resistant in wet environments, nonmagnetic, and electrically conductive.
Washers that meet ASME B18.21.1 adhere to strict dimensional standards. Steel washers also meet standards for material properties.
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 18-8 Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| 5/16" | 0.322" | 0.583" | 0.078" | Rockwell C35 | ASME B18.21.1 | 100 | 000000000 | 00000 |
Black-Oxide Carbon Steel | ||||||||
| 5/16" | 0.322" | 0.583" | 0.078" | Rockwell C38 | ASME B18.21.1 | 50 | 00000000 | 0000 |
316 Stainless Steel | ||||||||
| 5/16" | 0.322" | 0.583" | 0.078" | Rockwell C35 | ASME B18.21.1 | 100 | 000000000 | 0000 |
18-8 Stainless Steel | ||||||||
| 5/16" | 0.322" | 0.583" | 0.078" | Rockwell C35 | ASME B18.21.1 | 100 | 000000000 | 0000 |
Zinc-Plated Steel | ||||||||
| 5/16" | 0.322" | 0.583" | 0.078" | Rockwell C38 | ASME B18.21.1 | 100 | 000000000 | 0000 |
| 5/16" | 0.322" | 0.583" | 0.078" | Rockwell C38 | ASME B18.21.1 | 1,000 | 000000000 | 00000 |
Zinc Yellow-Chromate Plated Grade 8 Steel | ||||||||
| 5/16" | 0.322" | 0.583" | 0.078" | Rockwell C38 | ASME B18.21.1 | 100 | 000000000 | 0000 |
Hot-Dipped Galvanized Steel | ||||||||
| 5/16" | 0.322" | 0.583" | 0.078" | Rockwell C38 | ASME B18.21.1 | 100 | 000000000 | 0000 |
Zinc Flake Coated | ||||||||
| 5/16" | 0.322" | 0.583" | 0.078" | Rockwell C38 | ASME B18.21.1 | 25 | 00000000 | 0000 |
Steel | ||||||||
| 5/16" | 0.322" | 0.583" | 0.078" | Rockwell C38 | ASME B18.21.1 | 100 | 000000000 | 0000 |
| 5/16" | 0.322" | 0.583" | 0.078" | Rockwell C38 | ASME B18.21.1 | 1,000 | 000000000 | 00000 |
Aluminum | ||||||||
| 5/16" | 0.322" | 0.583" | 0.078" | Rockwell B87 | ASME B18.21.1 | 50 | 000000000 | 0000 |
Bronze | ||||||||
| 5/16" | 0.322" | 0.583" | 0.078" | Rockwell B90 | ASME B18.21.1 | 50 | 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.
18-8 stainless steel washers have excellent corrosion resistance in most environments. They may be mildly magnetic.
Passivated stainless steel washers have added protection against oxidation and corrosion. Black-oxide stainless steel washers have a matte-black finish.
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. | |
Passivated 18-8 Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
MS35338 | ||||||||
| 5/16" | 0.322" | 0.583" | 0.078" | Rockwell C35 | ASME B18.21.1; MS35338-140 | 25 | 000000000 | 00000 |
Black Oxide 18-8 Stainless Steel | ||||||||
MS35338 | ||||||||
| 5/16" | 0.314" | 0.583" | 0.078" | Rockwell C35 | ASME B18.21.1; MS35338-140 | 50 | 000000000 | 0000 |
Cadmium-Plated Steel | ||||||||
MS35338 | ||||||||
| 5/16" | 0.314" | 0.583" | 0.078" | Rockwell C38 | ASME B18.21.1; MS35338-45 | 50 | 000000000 | 0000 |
Zinc Yellow-Chromate Plated Steel | ||||||||
MS35338 | ||||||||
| 5/16" | 0.314" | 0.583" | 0.078" | Rockwell C38 | ASME B18.21.1; MS35338-45 | 50 | 000000000 | 0000 |
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.
Black-oxide steel washers are mildly corrosion resistant in dry environments. Zinc-plated steel washers are corrosion resistant in wet environments.
18-8 stainless steel washers have good chemical resistance and may be mildly magnetic. Black-oxide 18-8 stainless steel washers have a matte black finish.
316 stainless steel washers have excellent resistance to chemicals and salt water. They may be mildly magnetic.
Washers that meet ASME B18.21.1 adhere to strict dimensional standards. Steel washers also meet standards for material properties.
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 Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/4" | 0.260" | 0.363" | 0.078" | Rockwell C38 | ASME B18.21.1 | 50 | 000000000 | 00000 |
Zinc-Plated Steel | ||||||||
| 1/4" | 0.260" | 0.363" | 0.078" | Rockwell C38 | ASME B18.21.1 | 50 | 000000000 | 0000 |
18-8 Stainless Steel | ||||||||
| No. 12 | 0.227" | 0.331" | 0.078" | Rockwell C35 | __ | 100 | 000000000 | 0000 |
| 1/4" | 0.260" | 0.363" | 0.078" | Rockwell C35 | ASME B18.21.1 | 100 | 000000000 | 0000 |
Black-Oxide 18-8 Stainless Steel | ||||||||
| 1/4" | 0.260" | 0.363" | 0.078" | Rockwell C35 | ASME B18.21.1 | 50 | 000000000 | 00000 |
316 Stainless Steel | ||||||||
| 1/4" | 0.260" | 0.363" | 0.078" | Rockwell C35 | ASME B18.21.1 | 100 | 000000000 | 0000 |
Steel | ||||||||
| 1/4" | 0.260" | 0.363" | 0.078" | Rockwell C38 | ASME B18.21.1 | 100 | 000000000 | 0000 |