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Aluminum Unthreaded Spacers
Made of aluminum, these spacers are lightweight, nonmagnetic, and mildly corrosion resistant. Material can vary between 6061 and 2011 aluminum.
For technical drawings and 3-D models, click on a part number.
18-8 Stainless Steel Unthreaded Spacers
18-8 stainless steel spacers have good corrosion resistance and may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.
Each | ||||||
|---|---|---|---|---|---|---|
| Lg. | For Screw Size  | ID | Specifications Met | 1-9 | 10-Up | |
| 1/16" | No. 0 | 0.064" | ASTM A582 | 000000000 | 00000 | 00000 |
| 1/8" | No. 0 | 0.064" | ASTM A582 | 000000000 | 0000 | 0000 |
| 3/16" | No. 0 | 0.064" | ASTM A582 | 000000000 | 0000 | 0000 |
| 1/4" | No. 0 | 0.064" | ASTM A582 | 000000000 | 0000 | 0000 |
| 5/16" | No. 0 | 0.064" | ASTM A582 | 000000000 | 0000 | 0000 |
| 3/8" | No. 0 | 0.064" | ASTM A582 | 000000000 | 0000 | 0000 |
| 1/2" | No. 0 | 0.064" | ASTM A582 | 000000000 | 0000 | 0000 |
Zinc-Plated Steel Unthreaded Spacers
The zinc-plated finish provides some corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Zinc-Plated Brass Unthreaded Spacers
Brass makes these spacers electrically conductive and nonmagnetic and the zinc-plated finish provides corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Nylon Unthreaded Spacers
These spacers have excellent wear and abrasion resistance. Exposure to moisture may cause them to expand.
For technical drawings and 3-D models, click on a part number.
| Lg. | For Screw Size | ID | Temperature Range, °F | Specifications Met | Pkg. Qty. | Pkg. | |
Off-White | |||||||
|---|---|---|---|---|---|---|---|
| 1/8" | No. 0 | 0.064" | -40° to 185° | ASTM D4066, ASTM D6779, UL 94 V-2 | 25 | 000000000 | 000000 |
| 3/16" | No. 0 | 0.064" | -40° to 185° | ASTM D4066, ASTM D6779, UL 94 V-2 | 25 | 000000000 | 00000 |
| 1/4" | No. 0 | 0.064" | -40° to 185° | ASTM D4066, ASTM D6779, UL 94 V-2 | 25 | 000000000 | 00000 |
| 5/16" | No. 0 | 0.064" | -40° to 185° | ASTM D4066, ASTM D6779, UL 94 V-2 | 25 | 000000000 | 00000 |
| 3/8" | No. 0 | 0.064" | -30° to 250° | ASTM D4066, ASTM D6779, UL 94 V-2 | 10 | 000000000 | 00000 |
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 18-8 stainless steel washers have a matte-black finish.
Black-oxide steel washers have mild corrosion resistance in dry environments.
Brass 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 | OD | Thick. | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
316 Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| No. 0 | 0.078" | 0.188" | 0.018"-0.032" | Not Rated | __ | 100 | 000000000 | 00000 |
18-8 Stainless Steel | ||||||||
| No. 0 | 0.062" | 0.156" | 0.018"-0.032" | Not Rated | __ | 100 | 000000000 | 0000 |
| No. 0 | 0.078" | 0.156" | 0.005"-0.024" | Rockwell B83 | __ | 25 | 000000000 | 0000 |
| No. 0 | 0.078" | 0.188" | 0.016"-0.025" | Not Rated | ASME B18.21.1 | 100 | 000000000 | 0000 |
Black-Oxide 18-8 Stainless Steel | ||||||||
| No. 0 | 0.078" | 0.188" | 0.010"-0.030" | Rockwell B68 | __ | 50 | 000000000 | 00000 |
Black-Oxide Steel | ||||||||
| No. 0 | 0.062" | 0.125" | 0.005"-0.024" | Not Rated | __ | 25 | 000000000 | 0000 |
Brass | ||||||||
| No. 0 | 0.062" | 0.125" | 0.010"-0.020" | Not Rated | __ | 50 | 000000000 | 0000 |
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. 17-7 PH stainless steel washers are stronger than 18-8 stainless steel washers. Black-oxide 18-8 stainless steel washers have a matte-black finish.
Aluminum washers are lightweight and corrosion resistant in wet environments.
Copper, brass, and silicon bronze 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 | OD | Thick. | Hardness | Pkg. Qty. | Pkg. | |
316 Stainless Steel | |||||||
|---|---|---|---|---|---|---|---|
| No. 0 | 0.062" | 0.156" | 0.018" to 0.032" | Not Rated | 100 | 000000000 | 00000 |
18-8 Stainless Steel | |||||||
| No. 0 | 0.062" | 0.125" | 0.005" to 0.024" | Rockwell B83 | 25 | 000000000 | 0000 |
17-7 PH Stainless Steel | |||||||
| No. 0 | 0.062" | 0.156" | 0.018" to 0.032" | Rockwell C40 | 10 | 000000000 | 00000 |
Black-Oxide 18-8 Stainless Steel | |||||||
| No. 0 | 0.062" | 0.156" | 0.010" to 0.040" | Rockwell B68 | 50 | 000000000 | 00000 |
Aluminum | |||||||
| No. 0 | 0.062" | 0.156" | 0.015" to 0.023" | Brinell 120 | 25 | 000000000 | 0000 |
Brass | |||||||
| No. 0 | 0.062" | 0.125" | 0.005" to 0.024" | Rockwell B60 | 25 | 000000000 | 0000 |
Mil. Spec. Washers
Choose these washers for their adherence to strict military standards for material and construction.
18-8 stainless steel and 321 stainless steel washers have excellent corrosion resistance in most environments. They may be mildly magnetic. Passivated 18-8 stainless steel washers have added protection against oxidation and corrosion. Cadmium- and zinc yellow-chromate plated steel washers are corrosion resistant in wet environments.
Aluminum washers are lightweight and have good corrosion resistance. 2024 aluminum washers are easy to machine. They are stronger and resist wear better than 1100 aluminum. They are commonly used in the aircraft industry and in veterinary and orthopedic equipment.
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 | ||||||||
|---|---|---|---|---|---|---|---|---|
MS51496 | ||||||||
| No. 0 | 0.068" | 0.130" | 0.022"-0.028" | Rockwell C20 | MS51496-P61 | 25 | 000000000 | 000000 |
| No. 0 | 0.068" | 0.161" | 0.013"-0.019" | Rockwell C20 | MS51496-P62 | 25 | 000000000 | 00000 |
NAS620 | ||||||||
| No. 0 | 0.063" | 0.099" | 0.015"-0.018" | Rockwell B70 | NAS620C0 | 250 | 000000000 | 00000 |
Cadmium-Plated Steel | ||||||||
NAS620 | ||||||||
| No. 0 | 0.063" | 0.099" | 0.015"-0.017" | Rockwell B70 | NAS620-0 | 100 | 00000000 | 00000 |
2024 Aluminum | ||||||||
NAS1149 | ||||||||
| No. 0 | 0.068" | 0.188" | 0.013"-0.019" | Not Rated | NAS1149-DN016H | 25 | 000000000 | 00000 |
| No. 0 | 0.068" | 0.188" | 0.028"-0.036" | Not Rated | NAS1149-DN032H | 25 | 000000000 | 00000 |
ASME Washers
Also known as Type B washers.
Narrow washers have a smaller OD than regular and wide washers for applications where SAE and USS washers won’t fit. Regular washers have a larger OD than SAE washers. They’re generally as large as or larger than USS washers. Wide washers spread your fastener’s load over a larger area than other washers to cover oversized holes and limit damage to soft material. They have a larger OD than both SAE and USS washers.
316 stainless steel washers have excellent resistance to chemicals and salt water. They may be mildly magnetic.
18-8 stainless steel washers have excellent corrosion resistance in most environments. They may be mildly magnetic.
Zinc- 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 | ASME Designation | ID | OD | Thick. | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
316 Stainless Steel | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| No. 0 | Narrow | 0.068" | 0.125" | 0.022"-0.028" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 00000 |
| No. 0 | Regular | 0.068" | 0.188" | 0.022"-0.028" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 0000 |
| No. 0 | Wide | 0.068" | 0.250" | 0.022"-0.028" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 0000 |
18-8 Stainless Steel | |||||||||
| No. 0 | Narrow | 0.068" | 0.125" | 0.022"-0.028" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 0000 |
| No. 0 | Regular | 0.068" | 0.188" | 0.022"-0.028" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 0000 |
| No. 0 | Wide | 0.068" | 0.250" | 0.022"-0.028" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 0000 |
Zinc-Plated Steel | |||||||||
| No. 0 | Narrow | 0.068" | 0.125" | 0.022"-0.028" | Rockwell B40 | ASME B18.21.1 | 25 | 000000000 | 0000 |
| No. 0 | Regular | 0.068" | 0.188" | 0.022"-0.028" | Rockwell B40 | ASME B18.21.1 | 25 | 000000000 | 0000 |
| No. 0 | Wide | 0.068" | 0.250" | 0.022"-0.028" | Rockwell B40 | ASME B18.21.1 | 25 | 000000000 | 0000 |
Plastic Washers
These plastic washers are good electrical insulators.
Nylon washers are stronger than polycarbonate and UHMW washers. Exposure to moisture may cause them to expand. Lubricant-filled nylon washers have a slippery surface that resists wear in high-friction applications.
Polycarbonate washers are more rigid than most plastic washers for high impact resistance. They have good moisture resistance and withstand oil, greases, and detergents.
For technical drawings and 3-D models, click on a part number.
Temperature Range, °F | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| For Screw Size | ID | OD | Thick. | Min. | Max. | Hardness | Specifications Met | Choose a Color | Pkg. Qty. | Pkg. | |
Nylon Plastic | |||||||||||
| No. 0 | 0.065" | 0.179" | 0.073"-0.083" | -40° | 180° | Rockwell R115 | __ | 100 | 000000000 | 000000 | |
| No. 0 | 0.068" | 0.125" | 0.022"-0.028" | -40° | 300° | Rockwell R115 | ASME B18.22.1 | Off-White | 50 | 000000000 | 0000 |
| No. 0 | 0.068" | 0.188" | 0.020"-0.030" | -40° | 180° | Rockwell R115 | __ | 50 | 000000000 | 0000 | |
Lubricant-Filled Nylon Plastic | |||||||||||
| No. 0 | 0.065" | 0.188" | 0.008"-0.012" | Not Rated | 220° | Rockwell M85 | __ | Gray | 5 | 000000000 | 0000 |
Polycarbonate Plastic | |||||||||||
| No. 0 | 0.078" | 0.188" | 0.016"-0.025" | Not Rated | 212° | Rockwell M70 | ASME B18.21.1 | Clear | 25 | 000000000 | 0000 |
Mil. Spec. Plastic Washers
Choose these washers for their adherence to strict military standards for material and construction. They have a good mix of strength and electrical insulating properties. 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 | Thick. | Min. | Max. | Specifications Met | Color | Pkg. Qty. | Pkg. | |
Nylon Plastic | ||||||||||
MS51859 | ||||||||||
| No. 0 | 0.068" | 0.203" | 0.016" to 0.024" | Not Rated | 180° | MS51859-11 | White | 50 | 000000000 | 000000 |
Electrical-Insulating Plastic Washers
These washers are excellent electrical insulators.
Polypropylene washers resist organic solvents and degreasing agents.
Phenolic washers have low moisture absorption, so they won’t expand or become brittle over time. Color ranges from red-brown to yellow-brown.
For technical drawings and 3-D models, click on a part number.
Water- and Steam-Resistant Plastic Washers
Low moisture absorption and good heat resistance make these washers suitable for wet and harsh environments. All are good electrical insulators.
Fiberglass washers are stronger than Delrin® acetal plastic washers and have excellent resistance to salt water. Color ranges from light green to light tan.
Delrin® acetal plastic washers combine a slippery, wear-resistant surface with good strength and rigidity.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Max. Temperature, °F | Hardness | Specifications Met | Color | Pkg. Qty. | Pkg. | |
Fiberglass | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| No. 0 | 0.062" | 0.188" | 0.012" to 0.018" | 280° | Rockwell M100 | MIL-I-24768/27 | Light Green | 10 | 000000000 | 00000 |
| No. 0 | 0.062" | 0.250" | 0.012" to 0.018" | 280° | Rockwell M100 | MIL-I-24768/27 | Light Green | 10 | 000000000 | 0000 |
Delrin® Acetal Plastic | ||||||||||
| No. 0 | 0.062" | 0.188" | 0.012" to 0.018" | 180° | Durometer 83D | __ | White | 50 | 000000000 | 00000 |
| No. 0 | 0.062" | 0.250" | 0.012" to 0.018" | 180° | Durometer 83D | __ | White | 50 | 000000000 | 00000 |
High-Temperature Plastic Washers
These are among the most heat resistant plastic washers we carry. All have good chemical resistance.
PEEK washers have excellent tensile strength for high-stress applications. Carbon-filled PEEK washers are stronger and more moisture resistant than PEEK washers.
Polyimide washers are better electrical insulators than PEEK washers.
For technical drawings and 3-D models, click on a part number.
Temperature Range, °F | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| For Screw Size | ID | OD | Thick. | Min. | Max. | Hardness | Specifications Met | Color | Pkg. Qty. | Pkg. | |
PEEK Plastic | |||||||||||
| No. 0 | 0.078" | 0.188" | 0.016"-0.025" | -50° | 500° | Rockwell M103 | ASME B18.21.1 | Beige | 10 | 000000000 | 00000 |
| No. 0 | 0.078" | 0.188" | 0.016"-0.025" | -20° | 500° | Rockwell M103 | ASME B18.21.1 | Black | 10 | 000000000 | 0000 |
Carbon-Filled PEEK Plastic | |||||||||||
| No. 0 | 0.078" | 0.188" | 0.016"-0.025" | -20° | 500° | Rockwell M103 | ASME B18.21.1 | Black | 10 | 000000000 | 0000 |
Polyimide Plastic | |||||||||||
| No. 0 | 0.062" | 0.219" | 0.005"-0.006" | -420° | 450° | Not Rated | __ | Orange | 10 | 000000000 | 0000 |
Extreme-Temperature Ceramic Washers
Ceramic washers withstand temperatures up to 3000° F. They are good electrical insulators and resist moisture as well as hydrochloric and nitric acid gases. Suitable for use in ovens.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Max. Temperature, °F | Color | Each | |
Ceramic | |||||||
|---|---|---|---|---|---|---|---|
| No. 0 | 0.068" | 0.188" | 0.022"-0.028" | 3000° | Off-White | 000000000 | 00000 |
High-Temperature Mica Washers
These washers withstand temperatures up to 1050° F and are excellent electrical insulators. Color ranges from clear to tan.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Max. Temperature, °F | Color | Pkg. Qty. | Pkg. | |
Mica | ||||||||
|---|---|---|---|---|---|---|---|---|
| No. 0 | 0.072" | 0.219" | 0.004"-0.006" | 1050° | Beige | 5 | 000000000 | 00000 |
Magnetic Washers
Made from neodymium, these washers stay in place on iron and steel surfaces for easy mounting and installation.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Max. Pull, lbs. | Max. Temperature, °F | Magnet Grade | Direction of Magnetization | Pkg. Qty. | Pkg. | |
Nickel-Plated Neodymium | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| No. 0 | 0.079" | 0.118" | 0.035"-0.043" | 0.4 | 140° | N50 | Through Thickness | 10 | 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 loosening. 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.
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.
For technical drawings and 3-D models, click on a part number.
Single-Wave Washers
These curved, flexible washers act like springs to compensate for tolerance variations and uneven surfaces. You can also use them to damp vibration.
18-8 stainless steel washers have good chemical resistance and may be mildly magnetic.
316 stainless steel washers have excellent resistance to chemicals and salt water. They may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.