About Washers
More
General Purpose Washers
Use these washers to evenly distribute the load under bolt or screw heads and nuts when fastening. They can also act as spacers.
316 stainless steel washers have excellent resistance to chemicals and salt water. They may be mildly magnetic.
18-8 stainless steel and 17-7 PH stainless steel washers have good chemical resistance and may be mildly magnetic. Black-oxide 18-8 stainless steel washers have a matte-black finish.
Zinc yellow-chromate and chrome-plated steel washers are corrosion resistant in wet environments.
SAE washers generally have a smaller ID and OD than USS washers.
For technical drawings and 3-D models, click on a part number.
| For Screw Size  | ID | OD | Thick. | Hardness | Washer Designation | Pkg. Qty. | Pkg. | |
316 Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| 2" | 2.125" | 4.000" | 0.180" to 0.194" | Not Rated | __ | 1 | 000000000 | 00000 |
18-8 Stainless Steel | ||||||||
| 2" | 2.125" | 4.000" | 0.180" to 0.194" | Not Rated | __ | 1 | 000000000 | 0000 |
Black-Oxide 18-8 Stainless Steel | ||||||||
| 2" | 2.125" | 4.000" | 0.150" to 0.220" | Not Rated | __ | 1 | 000000000 | 00000 |
Zinc Yellow-Chromate Plated Grade 8 Steel | ||||||||
| 2" | 2.125" | 3.750" | 0.178" to 0.196" | Rockwell C38 | SAE | 1 | 000000000 | 0000 |
Oversized Washers
Compared to our general purpose washers, these have exaggerated diameters and/or thicknesses for covering oversized holes or for use as spacers and levelers.
316 stainless steel washers have excellent resistance to chemicals and salt water. They may be mildly magnetic.
18-8 stainless steel and 17-4 PH stainless steel washers have good chemical resistance and may be mildly magnetic. Black-oxide steel washers have mild corrosion resistance in dry environments.
Hot-dipped galvanized steel washers are 10 times as corrosion resistant as zinc- and zinc yellow-chromate plated washers.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Hardness | Pkg. Qty. | Pkg. | |
316 Stainless Steel | |||||||
|---|---|---|---|---|---|---|---|
| 2" | 2.125" | 4.250" | 0.150"-0.220" | Not Rated | 1 | 000000000 | 000000 |
18-8 Stainless Steel | |||||||
| 2" | 2.125" | 3.750" | 0.235"-0.265" | Rockwell B83 | 1 | 000000000 | 00000 |
| 2" | 2.250" | 4.000" | 0.302"-0.335" | Not Rated | 1 | 000000000 | 00000 |
Black-Oxide Steel | |||||||
| 2" | 2.125" | 3.750" | 0.235"-0.265" | Not Rated | 1 | 000000000 | 00000 |
| 2" | 2.125" | 3.750" | 0.240"-0.260" | Not Rated | 1 | 000000000 | 00000 |
Hot-Dipped Galvanized Steel | |||||||
| 2" | 2.250" | 4.000" | 0.302"-0.332" | Rockwell B40 | 1 | 000000000 | 00000 |
Mil. Spec. Washers
Choose these washers for their adherence to strict military standards for material and construction.
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. | |
Cadmium-Plated Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
MS27183 | ||||||||
| 2" | 2.125" | 4.500" | 0.153"-0.213" | Not Rated | MS27183-36; ASME B18.21.1 | 1 | 000000000 | 000000 |
SAE Washers
SAE washers generally have a smaller ID and OD than USS washers.
316 stainless steel washers have excellent resistance to chemicals and salt water. They may be mildly magnetic.
Black Corrosion-resistant coated and zinc-flake-coated steel washers resist chemicals and withstand 1,000 hours of salt spray.
For technical drawings and 3-D models, click on a part number.
USS Washers
USS washers generally have a larger ID and OD than SAE washers.
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. Black-oxide washers have a matte-black finish.
Zinc-plated steel washers are corrosion resistant in wet environments.
Hot-dipped galvanized steel washers are 10 times as corrosion resistant as zinc-plated washers.
Black corrosion-resistant-coated steel washers resist chemicals and withstand 1,000 hours of salt spray.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
316 Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| 2" | 2.125" | 4.500" | 0.153"-0.213" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 000000 |
18-8 Stainless Steel | ||||||||
| 2" | 2.125" | 4.500" | 0.153"-0.213" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 00000 |
Black-Oxide 18-8 Stainless Steel | ||||||||
| 2" | 2.125" | 4.500" | 0.153"-0.213" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 00000 |
Zinc-Plated Steel | ||||||||
| 2" | 2.125" | 4.500" | 0.153"-0.213" | Not Rated | ASME B18.21.1 | 5 | 000000000 | 00000 |
Zinc Yellow-Chromate Plated Grade 8 Steel | ||||||||
| 2" | 2.125" | 4.500" | 0.153"-0.213" | Rockwell C38 | ASME B18.21.1 | 1 | 000000000 | 00000 |
Hot-Dipped Galvanized Steel | ||||||||
| 2" | 2.125" | 4.500" | 0.153"-0.213" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 00000 |
Black Corrosion-Resistant-Coated Steel | ||||||||
| 2" | 2.125" | 4.500" | 0.153"-0.213" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 00000 |
Steel | ||||||||
| 2" | 2.125" | 4.500" | 0.153"-0.213" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 0000 |
Washers for Structural Applications
Designed for use with structural screws, studs, and nuts, these washers are often used for construction and exterior building applications.
Hot-dipped galvanized washers are corrosion resistant in wet environments.
For technical drawings and 3-D models, click on a part number.
Square Washers
Square washers fit into slots and channels and have flat sides to keep them from rotating. They are wider and thicker than most round washers, making them good for distributing heavy loads.
Black-oxide steel washers are mildly corrosion resistant in dry environments.
Zinc-plated steel washers are corrosion resistant in wet environments.
Galvanized steel washers are 10 times as corrosion resistant as zinc-plated steel washers.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | Wd. | Thick. | Hardness | Each | |
| 2" | 2.062" | 4.000" | 0.235"-0.265" | Rockwell 15N80 | 000000000 | 000000 |
| For Screw Size | ID | Wd. | Thick. | Hardness | Pkg. Qty. | Pkg. | |
| 2" | 2.062" | 4.000" | 0.220"-0.280" | Rockwell B40 | 1 | 000000000 | 000000 |
| For Screw Size | ID | Wd. | Thick. | Hardness | Each | |
| 2" | 2.062" | 4.000" | 0.220"-0.280" | Rockwell B40 | 000000000 | 000000 |
Split Lock Washers
As a screw is tightened, these 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.
These washers are compatible with fasteners that have right-hand threads to prevent clockwise rotation. The uneven split ends bite into fasteners for a tight grip, but they won’t work with hardened surfaces. These washers hold better than curved or wave washers. They are not reusable after tightening.
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. 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 | ||||||||
|---|---|---|---|---|---|---|---|---|
| 2" | 2.039" | 2.936" | 0.422" | Rockwell C38 | ASME B18.21.1 | 1 | 00000000 | 000000 |
316 Stainless Steel | ||||||||
| 2" | 2.039" | 2.936" | 0.422" | Rockwell C35 | ASME B18.21.1 | 1 | 000000000 | 00000 |
18-8 Stainless Steel | ||||||||
| 2" | 2.039" | 2.936" | 0.422" | Rockwell C35 | ASME B18.21.1 | 1 | 000000000 | 00000 |
Zinc-Plated Steel | ||||||||
| 2" | 2.039" | 2.936" | 0.422" | Rockwell C38 | ASME B18.21.1 | 1 | 000000000 | 0000 |
Steel | ||||||||
| 2" | 2.039" | 2.936" | 0.422" | Rockwell C38 | ASME B18.21.1 | 1 | 000000000 | 0000 |
Oversized Split Lock Washers
Compared to standard split lock washers, these are thicker and have larger outside diameters. As the screw is tightened, these washers flatten to add tension to the joint. They counteract fatigue around the joint caused by small amounts of vibration, making them a popular choice for preventing fasteners from loosening. However, they resist the least amount of vibration compared to other locking washers.
These washers match with fasteners that have right-hand threads to prevent clockwise rotation. The uneven split ends bite into fasteners for a tight grip but won’t work with hardened surfaces. They hold better than curved or wave washers. They’re not reusable after tightening.
All washers adhere to strict ASME dimensional standards. Steel washers also meet the standard for material properties.
Steel washers are known for their strength. Zinc yellow-chromate plated steel washers resist corrosion 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 Grade 8 Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| 2" | 2.039" | 3.144" | 0.496" | Rockwell C38 | ASME B18.21.1 | 1 | 000000000 | 000000 |
Wedge Lock Washers
These two-piece washers provide more locking power than split, tooth, and spring lock washers. Wedges on the inside lock the two pieces together, and serrations on the exterior grip surfaces to resist loosening from high vibration and shifting. Washers are reusable.
Zinc-flake-coated steel washers are corrosion resistant in wet environments.
316 stainless steel and zinc-flake-coated steel washers are comparable to NORD-LOCK® Series washers.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Washer Type | Hardness | Pkg. Qty. | Pkg. | |
Zinc-Flake-Coated Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| 2", M52 | 2.110" | 3.150" | 0.270"-0.290" | Wedge Lock | Rockwell C46 | 1 | 000000000 | 000000 |
Leveling Washers
Also known as spherical washers, these consist of a male and female washer that, when nested, swivel slightly to compensate for tolerance variations and uneven surfaces. They're good for die and fixturing applications.
18-8 stainless steel washers have good chemical resistance and may be mildly magnetic.
Black-oxide steel washers are mildly corrosion resistant in dry environments.
For technical drawings and 3-D models, click on a part number.
Washers | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Male | Female | Replacement Male Washers | Replacement Female Washers | ||||||||||||
| For Screw Size | ID (A) | OD (B) | Radius | ID (C) | OD (D) | Radius | Thick. (E) | Max. Angle of Correction | Hardness | Each | Each | Each | |||
18-8 Stainless Steel | |||||||||||||||
| 2" | 2.062" | 3.875" | 3.500" | 2.125" | 3.875" | 3.500" | 0.735"-0.765" | 3° | Rockwell B80 | 000000000 | 0000000 | 000000000 | 000000 | 000000000 | 000000 |
Black-Oxide Steel | |||||||||||||||
| 2" | 2.062" | 3.875" | 3.500" | 2.125" | 3.875" | 3.500" | 0.735"-0.765" | 3° | Rockwell C48 | 000000000 | 00000 | 000000000 | 00000 | 000000000 | 00000 |
Abrasion-Resistant Cushioning Washers
These SBR rubber washers are reinforced with cloth fibers to resist wear from rubbing and scraping surfaces. Use them to cushion joints and damp vibration.
For technical drawings and 3-D models, click on a part number.