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About Washers
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Ring Shims
Precisely align, level, and adjust spacing on fasteners, shafts, and machinery with these shims.
For accurate leveling, choose materials such as steel or stainless steel, which are hard enough to resist scratching and deforming. Softer shims, like copper or aluminum, can be used as wear plates between components that rub together, preventing damage to equipment.
Carbon steel shims have excellent strength and can be welded, but aren't as corrosion resistant as other shims.
For technical drawings and 3-D models, click on a part number.
| ID | ID Tolerance | OD | OD Tolerance | Material | Min. Hardness | Pkg. Qty. | Pkg. | |
1/4" Thick. (-0.009" to 0.009" Tolerance) | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/4" | 0" to 0.011" | 3/8" | -0.01" to 0.01" | 1008-1010 Carbon Steel | Rockwell B65 | 1 | 00000000 | 000000 |
| 11/32" | 0" to 0.011" | 13/16" | -0.01" to 0.01" | 1008-1010 Carbon Steel | Rockwell B65 | 1 | 00000000 | 00000 |
| 3/8" | 0" to 0.011" | 5/8" | -0.01" to 0.01" | 1008-1010 Carbon Steel | Rockwell B65 | 1 | 00000000 | 00000 |
| 1/2" | 0" to 0.011" | 3/4" | -0.01" to 0.01" | 1008-1010 Carbon Steel | Rockwell B65 | 1 | 0000000 | 00000 |
| 5/8" | 0" to 0.011" | 1" | -0.01" to 0.01" | 1008-1010 Carbon Steel | Rockwell B65 | 1 | 00000000 | 00000 |
| 3/4" | 0" to 0.011" | 1 1/8" | -0.01" to 0.01" | 1008-1010 Carbon Steel | Rockwell B65 | 1 | 00000000 | 00000 |
| 7/8" | 0" to 0.011" | 1 3/8" | -0.01" to 0.01" | 1008-1010 Carbon Steel | Rockwell B65 | 1 | 00000000 | 00000 |
| 1" | 0" to 0.011" | 1 1/2" | -0.01" to 0.01" | 1008-1010 Carbon Steel | Rockwell B65 | 1 | 00000000 | 00000 |
| 1 1/8" | 0" to 0.011" | 1 5/8" | -0.01" to 0.01" | 1008-1010 Carbon Steel | Rockwell B65 | 1 | 00000000 | 00000 |
| 1 1/4" | 0" to 0.011" | 1 3/4" | -0.01" to 0.01" | 1008-1010 Carbon Steel | Rockwell B65 | 1 | 00000000 | 00000 |
| 1 3/8" | 0" to 0.011" | 1 7/8" | -0.01" to 0.01" | 1008-1010 Carbon Steel | Rockwell B65 | 1 | 0000000 | 00000 |
| 1 1/2" | 0" to 0.011" | 2 1/8" | -0.01" to 0.01" | 1008-1010 Carbon Steel | Rockwell B65 | 1 | 00000000 | 00000 |
Wide-Rim Ring Shims
Also known as machinery bushings, these shims have an oversized OD to create a larger bearing surface for reduced wear between moving parts. Use them to precisely align, level, and adjust spacing on shafts and machinery.
Carbon steel shims have excellent strength and can be welded.
For technical drawings and 3-D models, click on a part number.
| ID | ID Tolerance | OD | OD Tolerance | Material | Min. Hardness | Magnetic Properties | Pkg. Qty. | Pkg. | |
1/4" Thick. (-0.012" to 0.012" Tolerance) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 1/8" | 0.01" to 0.025" | 1 3/4" | -0.01" to 0.01" | 1008-1010 Carbon Steel | Rockwell B38 | Magnetic | 1 | 000000000 | 00000 |
| 1 1/4" | 0.01" to 0.025" | 1 7/8" | -0.01" to 0.01" | 1008-1010 Carbon Steel | Rockwell B38 | Magnetic | 1 | 000000000 | 0000 |
| 1 3/8" | 0.01" to 0.025" | 2 1/8" | -0.01" to 0.01" | 1008-1010 Carbon Steel | Rockwell B38 | Magnetic | 1 | 000000000 | 0000 |
| 1 1/2" | 0.01" to 0.025" | 2 1/4" | -0.01" to 0.01" | 1008-1010 Carbon Steel | Rockwell B38 | Magnetic | 1 | 000000000 | 0000 |
Slotted Shims
The slot lets you insert, remove, and adjust the shims without disassembling your machinery, while the tab keeps fingers and tools away from machine feet. Use an insertion tool (sold separately) for better leverage and reach. Shims are etched with the thickness.
18-8 stainless steel shims have a balance of strength and corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Slotted Shims | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Slot | Each | Insertion Tools | |||||||||||
| Thick. | Thick. Tolerance | Lg. | Wd. | Wd. | Dp. | For Max. Screw Size | Min. Hardness | Magnetic Properties | 1-9 | 10-Up | Each | ||
Trade Size A | |||||||||||||
| 0.25" | -0.01" to 0.01" | 2" | 2" | 9/16" | 1 9/32" | 1/2" | Rockwell B85 | May Be Mildly Magnetic | 00000000 | 000000 | 000000 | 000000000 | 00000 |
Trade Size AA | |||||||||||||
| 0.25" | -0.01" to 0.01" | 1 1/2" | 1 1/2" | 7/16" | 61/64" | 3/8" | Rockwell B85 | May Be Mildly Magnetic | 000000000 | 00000 | 00000 | 0000000 | 0000 |
Trade Size B | |||||||||||||
| 0.25" | -0.01" to 0.01" | 3" | 3" | 13/16" | 1 29/32" | 3/4" | Rockwell B85 | May Be Mildly Magnetic | 00000000 | 00000 | 00000 | 00000000 | 0000 |
Trade Size BB | |||||||||||||
| 0.25" | -0.01" to 0.01" | 2 1/2" | 2 1/2" | 11/16" | 1 19/32" | 5/8" | Rockwell B85 | May Be Mildly Magnetic | 000000000 | 00000 | 00000 | 000000000 | 0000 |
Trade Size C | |||||||||||||
| 0.25" | -0.01" to 0.01" | 4" | 4" | 1 3/16" | 2 19/32" | 1 1/8" | Rockwell B85 | May Be Mildly Magnetic | 00000000 | 00000 | 00000 | 00000000 | 0000 |
Trade Size D | |||||||||||||
| 0.25" | -0.01" to 0.01" | 5" | 5" | 1 9/16" | 3 9/32" | 1 1/2" | Rockwell B85 | May Be Mildly Magnetic | 00000000 | 00000 | 00000 | 000000000 | 0000 |
Trade Size E | |||||||||||||
| 0.25" | -0.01" to 0.01" | 6" | 6" | 1 15/16" | 4" | 1 7/8" | Rockwell B85 | May Be Mildly Magnetic | 000000000 | 00000 | 00000 | 00000000 | 0000 |
Trade Size G | |||||||||||||
| 0.25" | -0.01" to 0.01" | 6" | 6" | 2 5/16" | 4 3/16" | 2 1/4" | Rockwell B85 | May Be Mildly Magnetic | 000000000 | 00000 | 00000 | 00000000 | 0000 |
Trade Size H | |||||||||||||
| 0.25" | -0.01" to 0.01" | 8" | 8" | 2 5/16" | 5 3/16" | 2 1/4" | Rockwell B85 | May Be Mildly Magnetic | 000000000 | 00000 | 00000 | 000000000 | 0000 |
Large-Adjustment Slotted Shims
Use these thick shims to align cabinets, doors, and windows, or for other rough leveling. They're color-coded by thickness for easy identification. The slot makes it easy to insert, remove, and adjust the shims. Shims are made of plastic to resist moisture and prevent rot.
For technical drawings and 3-D models, click on a part number.
Slot | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thick. | Thick. Tolerance | Lg. | Wd. | Wd. | Dp. | Color | For Max. Screw Size | Material | Temp. Range | Pkg. Qty. | Pkg. | |
| 0.25" | -0.03" to 0.03" | 6" | 4" | 29/32" | 5 5/32" | Black | 3/4" | Polystyrene Plastic | Not Rated | 5 | 00000000 | 000000 |
Color-Coded Horseshoe Shims
These shims are color-coded by thickness for easy identification. The horseshoe design fits around screws. Use them to align cabinets, doors, and windows. Shims are made of plastic to resist moisture and prevent rot.
For technical drawings and 3-D models, click on a part number.
Slot | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Lg. | Wd. | Wd. | Dp. | For Max. Screw Size | Material | Temperature Range | Pkg. Qty. | Pkg. | |
1/4" Thick. (-0.032" to 0.032" Tolerance)—Black | |||||||||
| 1" | 2" | 9/16" | 13/16" | 1/2" | Polystyrene Plastic | Not Rated | 50 | 0000000 | 000000 |
| 2" | 1 1/2" | 1/2" | 1 1/2" | 7/16" | Polypropylene Plastic | Not Rated | 100 | 0000000 | 00000 |
| 2 3/4" | 2" | 5/8" | 2 1/16" | 9/16" | Polypropylene Plastic | Not Rated | 50 | 0000000 | 00000 |
| 3" | 2 1/4" | 13/16" | 2 1/4" | 3/4" | Polypropylene Plastic | Not Rated | 50 | 0000000 | 00000 |
| 3 1/2" | 1 1/2" | 1/2" | 3" | 7/16" | Polypropylene Plastic | Not Rated | 50 | 0000000 | 00000 |
| 4" | 3" | 13/16" | 3" | 3/4" | Polystyrene Plastic | Not Rated | 10 | 0000000 | 00000 |
Horseshoe Shims
Align cabinets, doors, and windows with these shims. The horseshoe design fits around screws. Shims are made of stainless steel to resist corrosion.
For technical drawings and 3-D models, click on a part number.
Slot | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Lg. | Wd. | Wd. | Dp. | For Max. Screw Size | Material | Minimum Hardness | Magnetic Properties | Each | |
1/4" Thick. (-0.01" to 0.01" Tolerance) | |||||||||
| 2" | 1 1/2" | 1/2" | 1 1/2" | 1/2" | 316 Stainless Steel | Rockwell B83 | May Be Mildly Magnetic | 0000000 | 00000 |
| 2 3/4" | 2" | 5/8" | 2" | 5/8" | 316 Stainless Steel | Rockwell B83 | May Be Mildly Magnetic | 0000000 | 0000 |
| 3" | 2 1/4" | 13/16" | 2 1/4" | 3/4" | 316 Stainless Steel | Rockwell B83 | May Be Mildly Magnetic | 0000000 | 0000 |
| 3 1/2" | 1 1/2" | 1/2" | 3" | 1/2" | 316 Stainless Steel | Rockwell B83 | May Be Mildly Magnetic | 0000000 | 00000 |
Interlocking Color-Coded Horseshoe Shims
Clips on these shims hold them together when stacked, and they are color coded by thickness for easy identification. Designed to fit around screws, they are commonly used in window, door, and cabinet installations. Shims are made of plastic to resist moisture and prevent rot.
For technical drawings and 3-D models, click on a part number.
Peel-Away Layered Shim Stock
Cut this shim stock it into custom shapes to fit your application. Stock is made of layers of material bonded with adhesive; remove layers with a utility knife until you get the thickness you need. To make the layers easier to pull apart, gently heat the shim to soften the adhesive.
For accurate leveling, choose materials such as steel or stainless steel, which are hard enough to resist scratching and deforming. Softer shims, like copper or aluminum, can be used as wear plates between components that rub together, preventing damage to equipment.
Aluminum shim stock is lightweight and nonmagnetic. It has good corrosion resistance.
24" × 24" | ||||||||
|---|---|---|---|---|---|---|---|---|
| Thick. | Thick. Tolerance | No. of Layers | Min. Hardness | Temper Rating | Specifications Met | Magnetic Properties | Each | |
0.003" Layer Thick. (-0.0003" to 0.0003" Tolerance) | ||||||||
| 0.25" | -0.005" to 0.025" | 83 | Not Rated | Full Hard | SAE AMS-DTL-22499 | Nonmagnetic | 0000000 | 0000000 |
Breakaway Shim Plates
These thick shims are scored to make size adjustments easy—break off the excess shim for a custom fit around fasteners or corners. Unlike wood shims, these plastic shims resist moisture and won’t rot. Use them to align cabinets, doors, and windows, or for other rough leveling.
For technical drawings and 3-D models, click on a part number.
Pkg. | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Thick. | Thick. Tolerance | Color | Score Interval | Material | Temp. Range | Specifications Met | Pkg. Qty. | 1-4 | 5-Up | |
6" × 6" | ||||||||||
| 0.25" | -0.012" to 0.012" | Black | 2" x 6" | ABS Plastic | Not Rated | ASTM D638 | 8 | 0000000 | 000000 | 000000 |
Slip-Resistant Shim Plates
The textured surface of these thick shims keeps them from sliding apart when stacked. Use them to align cabinets, doors, and windows, or for other rough leveling. They're color-coded by thickness for easy identification. Unlike wood shims, these plastic shims resist moisture and won’t rot.
For technical drawings and 3-D models, click on a part number.
| Thick. | Thick. Tolerance | Color | Material | Specifications Met | Pkg. Qty. | Pkg. | |
6" × 4" | |||||||
|---|---|---|---|---|---|---|---|
| 0.25" | -0.03" to 0.03" | Black | ABS Plastic | ASTM D785 | 5 | 00000000 | 000000 |
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.
Ceramic washers withstand high temperatures and resist moisture as well as hydrochloric and nitric acid gases.
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. | Color | Pkg. Qty. | Pkg. | |
Ceramic | |||||||||||
| 1/4" | 0.265" | 0.875" | 0.593" | 0.250" | 0.500" | Not Rated | 1700° | Off-White | 5 | 000000000 | 000000 |
Notched Washers for Wood
Also called No. 10 Western Timber and Victor washers, these have large ODs to prevent screws from sinking into wood. The notches allow you to temporarily secure them with nails to keep them from rotating during installation.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Hardness | Pkg. Qty. | Pkg. | |
Iron | |||||||
|---|---|---|---|---|---|---|---|
| 1/2" | 0.563" | 2.500" | 0.250" | Rockwell B62 | 5 | 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-aluminum-coated steel washers are 40 times as corrosion resistant as zinc-plated washers and comparable to Magni-coated washers.
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 Carbon Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1" | 1.024" | 1.656" | 0.250" | Rockwell C38 | ASME B18.21.1 | 1 | 00000000 | 00000 |
316 Stainless Steel | ||||||||
| 1" | 1.024" | 1.656" | 0.250" | Rockwell C35 | ASME B18.21.1 | 5 | 000000000 | 00000 |
18-8 Stainless Steel | ||||||||
| 1" | 1.024" | 1.656" | 0.250" | Rockwell C35 | ASME B18.21.1 | 5 | 000000000 | 00000 |
Zinc-Plated Steel | ||||||||
| 1" | 1.024" | 1.656" | 0.250" | Rockwell C38 | ASME B18.21.1 | 10 | 000000000 | 0000 |
Zinc Yellow-Chromate Plated Grade 8 Steel | ||||||||
| 1" | 1.024" | 1.656" | 0.250" | Rockwell C38 | ASME B18.21.1 | 10 | 000000000 | 00000 |
Hot-Dipped Galvanized Steel | ||||||||
| 1" | 1.024" | 1.656" | 0.250" | Rockwell C38 | ASME B18.21.1 | 10 | 000000000 | 00000 |
Zinc-Aluminum Coated Carbon Steel | ||||||||
| 1" | 1.024" | 1.656" | 0.250" | Rockwell C38 | ASME B18.21.1 | 1 | 00000000 | 0000 |
Steel | ||||||||
| 1" | 1.024" | 1.656" | 0.250" | Rockwell C38 | ASME B18.21.1 | 10 | 000000000 | 0000 |
Bronze | ||||||||
| 1" | 1.003" | 1.656" | 0.250" | Rockwell B90 | 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.
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. 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.
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.
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" | 1.024" | 1.478" | 0.250" | Rockwell C38 | ASME B18.21.1 | 1 | 000000000 | 00000 |
Zinc-Plated Steel | ||||||||
| 1" | 1.024" | 1.478" | 0.250" | Rockwell C38 | ASME B18.21.1 | 1 | 000000000 | 0000 |
18-8 Stainless Steel | ||||||||
| 1" | 1.024" | 1.478" | 0.250" | Rockwell C35 | ASME B18.21.1 | 1 | 000000000 | 0000 |
316 Stainless Steel | ||||||||
| 1" | 1.024" | 1.478" | 0.250" | Rockwell C35 | ASME B18.21.1 | 1 | 000000000 | 0000 |
Steel | ||||||||
| 1" | 1.024" | 1.478" | 0.250" | Rockwell C38 | ASME B18.21.1 | 10 | 000000000 | 0000 |
Vibration-Damping Washers
Use these in place of normal washers to damp vibration and cushion joints inside motors, fans, blowers, actuators, circuit boards, and other electronic equipment.
For technical drawings and 3-D models, click on a part number.
| ID | OD | Thick. | Capacity per Mount, lbs. | Deflection @ Capacity | Shear Capacity per Mount, lbs. | Deflection @ Shear Capacity | For Screw Size | Hardness | Hardness Rating | Temperature Range, °F | Pkg. Qty. | Pkg. | |
Black Neoprene Rubber | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.45" | 0.83" | 0.25" | 4 | 0.05" | __ | __ | 7/16" | Durometer 40A | Medium Soft | 10° to 180° | 5 | 00000000 | 00000 |
| 0.45" | 0.83" | 0.25" | 11 | 0.05" | __ | __ | 7/16" | Durometer 60A | Medium | 10° to 180° | 5 | 00000000 | 0000 |
| 0.45" | 0.83" | 0.25" | 18 | 0.05" | __ | __ | 7/16" | Durometer 70A | Medium | 10° to 180° | 5 | 00000000 | 0000 |
Blue PVC Plastic | |||||||||||||
| 0.46" | 0.81" | 0.25" | 10 | 0.05" | 0.5 | 0.04" | 7/16" | Durometer 56A | Medium | 55° to 105° | 10 | 00000000 | 00000 |
Extreme-Temperature Vibration-Damping Washers
In addition to having a wider temperature range than our other vibration-damping washers, these have excellent weather resistance. Use these in place of normal washers to damp vibration and cushion joints inside motors, fans, blowers, actuators, circuit boards, and other electronic equipment.
For technical drawings and 3-D models, click on a part number.
| ID | OD | Thick. | Capacity per Mount, lbs. | Deflection @ Capacity | Shear Capacity per Mount, lbs. | Deflection @ Shear Capacity | For Screw Size | Hardness | Hardness Rating | Temperature Range, °F | Pkg. Qty. | Pkg. | |
Black Plastic/Rubber Blend | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.46" | 0.81" | 0.25" | 10 | 0.05" | 0.5 | 0.04" | 7/16" | Durometer 57A | Medium | -20° to 160° | 10 | 00000000 | 000000 |