For Screw Size For Screw Size |
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Finish Finish | Show |
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Finish Finish | Hide |
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Washer Type Washer Type |
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| For Cross- Bracing | For Foam Insulation |
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| For Plaster | Square |
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| Tension Indicating |
ID ID |
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OD OD |
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Thickness Thickness |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Hardness Hardness |
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Tension Indicated Tension Indicated |
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Shape Shape |
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 | Round |
Fastener Strength Grade/Class Fastener Strength Grade/Class |
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Tensile Strength Tensile Strength |
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Strut Channel Framing Component Strut ChannelFraming Component |
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 | Washer |
Maximum Load Maximum Load |
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Strut Channel Type Strut Channel Type |
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| High Profile | Low Profile |
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| Stacked | Standard |
About Washers
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About Mesh Size
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Tension-Indicating Washers for Structural Applications
When you’ve applied the correct tension, these washers release an orange dye as a visual indicator.
ASTM F959 Type A325 washers are designed for use with A325 structural screws, studs, and nuts and are often used for construction and exterior building applications. They’re not for use with higher tensile strength bolting. Galvanized A325 washers have excellent corrosion resistance. Galvanized Class 8.8 washers are ten times as corrosion resistant as zinc-plated steel washers. Since they are strong and rust resistant, these washers are often used for construction and on building exteriors.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
Galvanized Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
ASME B18.2.6/ASTM F959 Type A325 | ||||||||
| 1/2" | 0.520" | 1.073" | 0.104"-0.180" | Rockwell C37 | ASME B18.2.6; ASTM F959 Type A325 | 5 | 000000000 | 00000 |
| 5/8" | 0.657" | 1.323" | 0.126"-0.220" | Rockwell C37 | ASME B18.2.6; ASTM F959 Type A325 | 5 | 000000000 | 0000 |
| 3/4" | 0.785" | 1.478" | 0.142"-0.230" | Rockwell C37 | ASME B18.2.6; ASTM F959 Type A325 | 5 | 000000000 | 0000 |
| 7/8" | 0.915" | 1.760" | 0.158"-0.240" | Rockwell C37 | ASME B18.2.6; ASTM F959 Type A325 | 1 | 000000000 | 0000 |
| 1" | 1.045" | 2.010" | 0.158"-0.270" | Rockwell C37 | ASME B18.2.6; ASTM F959 Type A325 | 1 | 000000000 | 0000 |
| 1 1/8" | 1.155" | 2.260" | 0.158"-0.270" | Rockwell C37 | ASME B18.2.6; ASTM F959 Type A325 | 1 | 000000000 | 0000 |
| 1 1/4" | 1.310" | 2.510" | 0.158"-0.270" | Rockwell C37 | ASME B18.2.6; ASTM F959 Type A325 | 1 | 000000000 | 0000 |
| 1 3/8" | 1.442" | 2.760" | 0.158"-0.270" | Rockwell C37 | ASME B18.2.6; ASTM F959 Type A325 | 1 | 000000000 | 0000 |
| 1 1/2" | 1.570" | 3.010" | 0.158"-0.270" | Rockwell C37 | ASME B18.2.6; ASTM F959 Type A325 | 1 | 000000000 | 0000 |
Galvanized Class 8.8 Steel | ||||||||
ASME B18.2.6M/ASTM F959 | ||||||||
| M12 | 12.550mm | 27.250mm | 2.600mm-4.600mm | Rockwell C37 | ASME B18.2.6M; ASTM F959 | 10 | 000000000 | 0000 |
| M16 | 16.700mm | 33.600mm | 3.200mm-5.500mm | Rockwell C37 | ASME B18.2.6M; ASTM F959 | 5 | 000000000 | 0000 |
| M20 | 20.950mm | 40.640mm | 3.600mm-6.000mm | Rockwell C37 | ASME B18.2.6M; ASTM F959 | 5 | 000000000 | 0000 |
| M22 | 23.000mm | 42.900mm | 3.600mm-6.000mm | Rockwell C37 | ASME B18.2.6M; ASTM F959 | 5 | 000000000 | 00000 |
| M24 | 25.100mm | 48.670mm | 4.000mm-7.000mm | Rockwell C37 | ASME B18.2.6M; ASTM F959 | 1 | 000000000 | 0000 |
| M27 | 28.350mm | 54.360mm | 4.000mm-7.000mm | Rockwell C37 | ASME B18.2.6M; ASTM F959 | 1 | 000000000 | 0000 |
| M30 | 31.400mm | 58.420mm | 4.000mm-7.000mm | Rockwell C37 | ASME B18.2.6M; ASTM F959 | 1 | 000000000 | 0000 |
| M36 | 37.700mm | 70.360mm | 4.800mm-7.500mm | Rockwell C37 | ASME B18.2.6M; ASTM F959 | 1 | 000000000 | 0000 |
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.
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 | |
| 1/4" | 0.312" | 2.000" | 0.220"-0.280" | Rockwell B40 | 000000000 | 00000 |
| 3/8" | 0.438" | 2.000" | 0.235"-0.265" | Rockwell B40 | 000000000 | 0000 |
| 1/2" | 0.562" | 2.000" | 0.235"-0.265" | Rockwell B40 | 000000000 | 0000 |
| 1/2" | 0.562" | 3.000" | 0.235"-0.265" | Rockwell B40 | 000000000 | 0000 |
| 5/8" | 0.688" | 2.000" | 0.235"-0.265" | Rockwell B40 | 000000000 | 0000 |
| 5/8" | 0.688" | 3.000" | 0.235"-0.265" | Rockwell B40 | 000000000 | 0000 |
| 5/8" | 0.688" | 4.000" | 0.235"-0.265" | Rockwell B40 | 000000000 | 00000 |
| 3/4" | 0.812" | 2.000" | 0.235"-0.265" | Rockwell B40 | 000000000 | 0000 |
| 3/4" | 0.812" | 3.000" | 0.235"-0.265" | Rockwell B40 | 000000000 | 0000 |
| 3/4" | 0.812" | 4.000" | 0.235"-0.265" | Rockwell B40 | 000000000 | 00000 |
| 7/8" | 0.938" | 2.000" | 0.235"-0.265" | Rockwell B40 | 000000000 | 0000 |
| 7/8" | 0.938" | 3.000" | 0.235"-0.265" | Rockwell B40 | 000000000 | 0000 |
| 7/8" | 0.938" | 4.000" | 0.235"-0.265" | Rockwell B40 | 000000000 | 00000 |
| 1" | 1.062" | 2.000" | 0.220"-0.280" | Rockwell B40 | 000000000 | 0000 |
| 1" | 1.062" | 3.000" | 0.235"-0.265" | Rockwell B40 | 000000000 | 0000 |
| 1" | 1.062" | 4.000" | 0.235"-0.265" | Rockwell B40 | 000000000 | 00000 |
| 1 1/4" | 1.312" | 2.000" | 0.220"-0.280" | Rockwell B40 | 000000000 | 0000 |
| 1 1/4" | 1.312" | 3.000" | 0.220"-0.280" | Rockwell B40 | 000000000 | 0000 |
| 1 1/4" | 1.312" | 4.000" | 0.220"-0.280" | Rockwell B40 | 000000000 | 00000 |
| 1 1/2" | 1.562" | 3.000" | 0.220"-0.280" | Rockwell B40 | 000000000 | 0000 |
| 1 1/2" | 1.562" | 4.000" | 0.220"-0.280" | Rockwell B40 | 000000000 | 00000 |
| 1 3/4" | 1.812" | 4.000" | 0.220"-0.280" | Rockwell B40 | 000000000 | 00000 |
| 1 3/4" | 1.938" | 3.000" | 0.220"-0.280" | Rockwell B40 | 000000000 | 0000 |
| 2" | 2.062" | 4.000" | 0.220"-0.280" | Rockwell B40 | 000000000 | 00000 |
| M6 | 9.000mm | 50.000mm | 5.970mm-6.730mm | Rockwell B40 | 000000000 | 0000 |
| M8 | 11.000mm | 50.000mm | 5.970mm-6.730mm | Rockwell B40 | 000000000 | 0000 |
| M10 | 13.000mm | 50.000mm | 5.970mm-6.730mm | Rockwell B40 | 000000000 | 0000 |
| M12 | 16.000mm | 50.000mm | 5.970mm-6.730mm | Rockwell B40 | 000000000 | 0000 |
| M14 | 18.000mm | 50.000mm | 5.970mm-6.730mm | Rockwell B40 | 000000000 | 0000 |
| M16 | 22.000mm | 50.000mm | 5.970mm-6.730mm | Rockwell B40 | 000000000 | 0000 |
| M20 | 26.000mm | 50.000mm | 5.970mm-6.730mm | Rockwell B40 | 000000000 | 0000 |
| M22 | 28.000mm | 50.000mm | 5.970mm-6.730mm | Rockwell B40 | 000000000 | 0000 |
| M24 | 32.000mm | 50.000mm | 5.970mm-6.730mm | Rockwell B40 | 000000000 | 0000 |
| M30 | 38.000mm | 50.000mm | 5.970mm-6.730mm | Rockwell B40 | 000000000 | 0000 |
Flanged Washers for Cross-Bracing
These washers have a flange to spread force across structural beams better than standard washers for cross-bracing rods and cables. Their top surface is curved to let rods pass through and be secured with a nut at different angles. The bottom surface is flat to sit flush with structural beams. These washers have a locking tab that keeps them in place when force is applied. They’re also known as hillside washers.
Galvanized washers resist corrosion better than primed washers.
For technical drawings and 3-D models, click on a part number.
Washers for Plaster
Repair sagging, cracked plaster with these washers. The holes allow plaster to flow through to form a secure bond between the washer and the wall. Use these washers with self-sinking flat head (bugle head) screws. They are galvanized steel for corrosion resistance in wet environments.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Pkg. Qty. | Pkg. | |
Galvanized Steel | ||||||
|---|---|---|---|---|---|---|
| No. 10 | 0.235" | 1.250" | 0.020"-0.024" | 50 | 000000000 | 000000 |
Washers for Foam Insulation
These washers have prongs that pierce foam insulation so they stay in place. Use them with self-sinking flat head (bugle head) screws. They are galvanized steel for corrosion resistance in wet environments.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Prong Lg. | Pkg. Qty. | Pkg. | |
Galvanized Steel | |||||||
|---|---|---|---|---|---|---|---|
| No. 8 | 0.175" | 1.250" | 0.020"-0.024" | 5/16" | 50 | 000000000 | 000000 |
Slotted Unthreaded Spacers
An economical alternative to standard unthreaded spacers.
Galvanized steel spacers hold up to corrosion better than zinc-plated steel spacers. You can also paint them to match other products.
For technical drawings and 3-D models, click on a part number.
Galvanized Low-Carbon Steel | |||||
|---|---|---|---|---|---|
| Lg. | For Screw Size | ID | Pkg. Qty. | Pkg. | |
5/32" OD | |||||
| 1/4" | No. 4 | 0.118" | 25 | 000000000 | 00000 |
| 5/16" | No. 4 | 0.118" | 25 | 000000000 | 0000 |
| 3/8" | No. 4 | 0.118" | 25 | 000000000 | 0000 |
| 7/16" | No. 4 | 0.118" | 25 | 000000000 | 0000 |
| 1/2" | No. 4 | 0.118" | 25 | 000000000 | 0000 |
| 5/8" | No. 4 | 0.118" | 25 | 000000000 | 0000 |
| 3/4" | No. 4 | 0.118" | 25 | 000000000 | 0000 |
| 7/8" | No. 4 | 0.118" | 25 | 000000000 | 0000 |
| 1" | No. 4 | 0.118" | 25 | 000000000 | 00000 |
| 1 1/8" | No. 4 | 0.118" | 25 | 000000000 | 00000 |
| 1 1/4" | No. 4 | 0.118" | 25 | 000000000 | 00000 |
| 1 1/2" | No. 4 | 0.118" | 25 | 000000000 | 00000 |
3/16" OD | |||||
| 7/16" | No. 6 | 0.144" | 25 | 000000000 | 0000 |
| 5/8" | No. 6 | 0.144" | 25 | 000000000 | 0000 |
| 3/4" | No. 6 | 0.144" | 25 | 000000000 | 0000 |
| 7/8" | No. 6 | 0.144" | 25 | 000000000 | 0000 |
| 1" | No. 6 | 0.144" | 25 | 000000000 | 0000 |
| 1 1/8" | No. 6 | 0.144" | 25 | 000000000 | 0000 |
| 1 1/4" | No. 6 | 0.144" | 25 | 000000000 | 0000 |
| 1 1/2" | No. 6 | 0.144" | 25 | 000000000 | 0000 |
1/4" OD | |||||
| 5/16" | No. 10 | 0.198" | 25 | 000000000 | 0000 |
| 7/16" | No. 10 | 0.198" | 25 | 000000000 | 0000 |
| 5/8" | No. 10 | 0.198" | 25 | 000000000 | 0000 |
| 7/8" | No. 10 | 0.198" | 25 | 000000000 | 0000 |
| 1" | No. 10 | 0.198" | 25 | 000000000 | 0000 |
| 1 1/8" | No. 10 | 0.198" | 25 | 000000000 | 0000 |
| 1 1/4" | No. 10 | 0.198" | 25 | 000000000 | 0000 |
| 1 1/2" | No. 10 | 0.198" | 25 | 000000000 | 00000 |
| 1 3/4" | No. 10 | 0.198" | 25 | 000000000 | 00000 |
3/8" OD | |||||
| 5/16" | 1/4" | 0.254" | 25 | 000000000 | 0000 |
| 3/8" | 1/4" | 0.254" | 25 | 000000000 | 0000 |
| 7/16" | 1/4" | 0.254" | 25 | 000000000 | 0000 |
| 1/2" | 1/4" | 0.254" | 25 | 000000000 | 0000 |
| 5/8" | 1/4" | 0.254" | 25 | 000000000 | 00000 |
| 3/4" | 1/4" | 0.254" | 25 | 000000000 | 00000 |
| 7/8" | 1/4" | 0.254" | 25 | 000000000 | 00000 |
| 1" | 1/4" | 0.254" | 25 | 000000000 | 00000 |
| 1 1/8" | 1/4" | 0.254" | 10 | 000000000 | 0000 |
| 1 1/4" | 1/4" | 0.254" | 10 | 000000000 | 0000 |
| 1 1/2" | 1/4" | 0.254" | 10 | 000000000 | 0000 |
13/32" OD | |||||
| 5/8" | 5/16" | 0.322" | 25 | 000000000 | 0000 |
| 3/4" | 5/16" | 0.322" | 25 | 000000000 | 0000 |
| 7/8" | 5/16" | 0.322" | 25 | 000000000 | 0000 |
| 1" | 5/16" | 0.322" | 25 | 000000000 | 00000 |
| 1 1/4" | 5/16" | 0.322" | 25 | 000000000 | 00000 |
| 1 1/2" | 5/16" | 0.322" | 25 | 000000000 | 00000 |
| 1 3/4" | 5/16" | 0.322" | 10 | 000000000 | 0000 |
15/32" OD | |||||
| 3/8" | 5/16" | 0.318" | 10 | 000000000 | 0000 |
| 1/2" | 5/16" | 0.318" | 10 | 000000000 | 0000 |
| 5/8" | 5/16" | 0.318" | 10 | 000000000 | 0000 |
| 3/4" | 5/16" | 0.318" | 10 | 000000000 | 0000 |
| 7/8" | 5/16" | 0.318" | 10 | 000000000 | 0000 |
| 1" | 5/16" | 0.318" | 10 | 000000000 | 0000 |
| 1 1/4" | 5/16" | 0.318" | 10 | 000000000 | 00000 |
| 1 1/2" | 5/16" | 0.318" | 10 | 000000000 | 00000 |
1/2" OD | |||||
| 3/8" | 3/8" | 0.385" | 25 | 000000000 | 0000 |
| 1/2" | 3/8" | 0.385" | 25 | 000000000 | 0000 |
| 5/8" | 3/8" | 0.385" | 25 | 000000000 | 0000 |
| 3/4" | 3/8" | 0.385" | 25 | 000000000 | 00000 |
| 7/8" | 3/8" | 0.385" | 25 | 000000000 | 00000 |
| 1" | 3/8" | 0.385" | 25 | 000000000 | 00000 |
| 1 1/4" | 3/8" | 0.385" | 10 | 000000000 | 0000 |
| 1 1/2" | 3/8" | 0.385" | 10 | 000000000 | 0000 |
| 1 3/4" | 3/8" | 0.385" | 10 | 000000000 | 0000 |
9/16" OD | |||||
| 3/8" | 3/8" | 0.381" | 10 | 000000000 | 0000 |
| 1/2" | 3/8" | 0.381" | 10 | 000000000 | 0000 |
| 5/8" | 3/8" | 0.381" | 10 | 000000000 | 0000 |
| 3/4" | 3/8" | 0.381" | 10 | 000000000 | 0000 |
| 7/8" | 3/8" | 0.381" | 10 | 000000000 | 0000 |
| 1" | 3/8" | 0.381" | 10 | 000000000 | 00000 |
| 1 1/4" | 3/8" | 0.381" | 10 | 000000000 | 00000 |
| 1 1/2" | 3/8" | 0.381" | 10 | 000000000 | 00000 |
21/32" OD | |||||
| 1/2" | 1/2" | 0.512" | 10 | 000000000 | 0000 |
| 3/4" | 1/2" | 0.512" | 10 | 000000000 | 0000 |
| 1" | 1/2" | 0.512" | 10 | 000000000 | 00000 |
| 1 1/2" | 1/2" | 0.512" | 10 | 000000000 | 00000 |
23/32" OD | |||||
| 1/2" | 1/2" | 0.508" | 10 | 000000000 | 0000 |
| 3/4" | 1/2" | 0.508" | 10 | 000000000 | 00000 |
| 1" | 1/2" | 0.508" | 10 | 000000000 | 00000 |
| 1 1/2" | 1/2" | 0.508" | 5 | 000000000 | 0000 |
25/32" OD | |||||
| 3/4" | 5/8" | 0.637" | 10 | 000000000 | 0000 |
| 1" | 5/8" | 0.637" | 10 | 000000000 | 00000 |
| 1 1/2" | 5/8" | 0.637" | 10 | 000000000 | 00000 |
27/32" OD | |||||
| 3/4" | 5/8" | 0.632" | 10 | 000000000 | 00000 |
| 1" | 5/8" | 0.632" | 10 | 000000000 | 00000 |
| 1 1/2" | 5/8" | 0.632" | 5 | 000000000 | 0000 |
Galvanized Low-Carbon Steel | |||||
|---|---|---|---|---|---|
| Lg. | For Screw Size | ID | Pkg. Qty. | Pkg. | |
4.5mm OD | |||||
| 4mm | M3 | 3.150mm | 25 | 000000000 | 00000 |
| 6mm | M3 | 3.150mm | 25 | 000000000 | 0000 |
| 8mm | M3 | 3.150mm | 25 | 000000000 | 0000 |
| 10mm | M3 | 3.150mm | 25 | 000000000 | 0000 |
6mm OD | |||||
| 4mm | M4 | 4.150mm | 25 | 000000000 | 0000 |
| 6mm | M4 | 4.150mm | 25 | 000000000 | 0000 |
| 8mm | M4 | 4.150mm | 25 | 000000000 | 0000 |
| 10mm | M4 | 4.150mm | 25 | 000000000 | 0000 |
7mm OD | |||||
| 6mm | M5 | 5.200mm | 25 | 000000000 | 0000 |
| 8mm | M5 | 5.200mm | 25 | 000000000 | 0000 |
| 10mm | M5 | 5.200mm | 25 | 000000000 | 0000 |
8mm OD | |||||
| 6mm | M5 | 5.100mm | 25 | 000000000 | 0000 |
| 6mm | M6 | 6.200mm | 25 | 000000000 | 0000 |
| 8mm | M5 | 5.100mm | 25 | 000000000 | 0000 |
| 8mm | M6 | 6.200mm | 25 | 000000000 | 0000 |
| 10mm | M5 | 5.100mm | 25 | 000000000 | 0000 |
| 10mm | M6 | 6.200mm | 25 | 000000000 | 0000 |
9.5mm OD | |||||
| 6mm | M6 | 6.100mm | 25 | 000000000 | 0000 |
| 8mm | M6 | 6.100mm | 25 | 000000000 | 0000 |
| 10mm | M6 | 6.100mm | 25 | 000000000 | 0000 |
Steel Round Parts Baskets
More economical than stainless steel, choose these baskets when corrosion is not a concern. Note: Do not use 0.012" wire dia. baskets with sharp objects.
Sit-on-Top Strut Channel Washers
Add hardware to strut channel without having to hold the washer in place or reach inside the channel. Use with hex nuts to connect threaded rod.
Galvanized steel washers have better corrosion resistance in wet environments than zinc-plated steel and can be used outdoors.
For technical drawings and 3-D models, click on a part number.