About Washers
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Compression Springs
As you squeeze a compression spring, it pushes back to return to its original length. Spring rate is the amount of force required for every inch of compression or, for metric springs, millimeter of compression. The higher the spring rate, the harder it is to compress the spring.
Springs with closed and ground ends sit flat, so they won’t buckle.
For technical drawings and 3-D models, click on a part number.
Wire | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
OD | ID | Dia. | Compressed Lg. @ Max. Load | Max. Load, lbs. | Spring Rate, lbs./in. | Material | End Type | Pkg. Qty. | Pkg. | |
0.969" Lg. | ||||||||||
0.5" | 0.356" | 0.072" | 0.54" | 25.53 | 59.5 | Phosphor Bronze | Closed and Ground | 6 | 00000000 | 000000 |
Metric 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.
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, mm | OD, mm | Thick., mm | Overall Ht., mm | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
Bronze | |||||||||
---|---|---|---|---|---|---|---|---|---|
M3 | 3.2 | 8.0 | 0.5 | 1.6 | Not Rated | DIN 137B | 25 | 000000000 | 000000 |
M4 | 4.3 | 9.0 | 0.5 | 2.0 | Not Rated | DIN 137B | 25 | 000000000 | 00000 |
M5 | 5.3 | 11.0 | 0.5 | 2.2 | Not Rated | DIN 137B | 10 | 000000000 | 0000 |
M6 | 6.4 | 12.0 | 0.5 | 2.6 | Not Rated | DIN 137B | 10 | 000000000 | 0000 |
M8 | 8.4 | 15.0 | 0.8 | 3.0 | Not Rated | DIN 137B | 5 | 000000000 | 0000 |
M10 | 10.5 | 21.0 | 1.0 | 4.2 | Not Rated | DIN 137B | 1 | 000000000 | 0000 |
M12 | 13.0 | 24.0 | 1.2 | 5.0 | Not Rated | DIN 137B | 1 | 000000000 | 0000 |
Metric Split Lock Washers
As a screw is tightened, these metric 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. They meet a DIN or ASME standard for split lock washer dimensions.
Standard split lock washers have a left-hand helix that have right-hand threads to prevent loosening. They have uneven split ends that bite into fasteners for a tight grip but won’t work with hardened surfaces. They hold better than curved or wave washers. These washers are not reusable after tightening.
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, mm | OD, mm | Thick., mm | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
Silicon Bronze | ||||||||
---|---|---|---|---|---|---|---|---|
Standard | ||||||||
M3 | 3.4 | 6.2 | 0.7-0.9 | Rockwell B90 | DIN 127B | 100 | 000000000 | 000000 |
M4 | 4.4 | 7.6 | 0.8-1.0 | Rockwell B90 | DIN 127B | 100 | 000000000 | 00000 |
M5 | 5.4 | 9.2 | 1.1-1.3 | Rockwell B90 | DIN 127B | 100 | 000000000 | 00000 |
M6 | 6.5 | 11.8 | 1.5-1.7 | Rockwell B90 | DIN 127B | 50 | 000000000 | 00000 |
M8 | 8.5 | 14.8 | 1.9-2.1 | Rockwell B90 | DIN 127B | 25 | 000000000 | 00000 |
M10 | 10.7 | 18.1 | 2.0-2.4 | Rockwell B90 | DIN 127B | 10 | 000000000 | 0000 |
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.
Silicon Bronze washers are corrosion resistant in wet environments, nonmagnetic, and electrically conductive.
Washers that meet ASME B18.21.1 adhere to strict dimensional standards.
For technical drawings and 3-D models, click on a part number.
For Screw Size | ID | OD | Thick. | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
Silicon Bronze | ||||||||
---|---|---|---|---|---|---|---|---|
No. 2 | 0.094" | 0.172" | 0.020" | Rockwell B90 | ASME B18.21.1 | 100 | 000000000 | 00000 |
No. 3 | 0.107" | 0.195" | 0.025" | Rockwell B90 | ASME B18.21.1 | 100 | 000000000 | 0000 |
No. 4 | 0.120" | 0.209" | 0.025" | Rockwell B90 | ASME B18.21.1 | 100 | 000000000 | 0000 |
No. 4 | 0.120" | 0.209" | 0.025" | Rockwell B90 | ASME B18.21.1 | 1,000 | 000000000 | 00000 |
No. 6 | 0.148" | 0.250" | 0.031" | Rockwell B90 | ASME B18.21.1 | 100 | 000000000 | 0000 |
No. 6 | 0.148" | 0.250" | 0.031" | Rockwell B90 | ASME B18.21.1 | 1,000 | 000000000 | 00000 |
No. 8 | 0.174" | 0.293" | 0.040" | Rockwell B90 | ASME B18.21.1 | 100 | 000000000 | 0000 |
No. 8 | 0.174" | 0.293" | 0.040" | Rockwell B90 | ASME B18.21.1 | 1,000 | 000000000 | 00000 |
No. 10 | 0.200" | 0.334" | 0.047" | Rockwell B90 | ASME B18.21.1 | 100 | 000000000 | 0000 |
No. 12 | 0.227" | 0.377" | 0.056" | Rockwell B90 | ASME B18.21.1 | 100 | 000000000 | 0000 |
1/4" | 0.260" | 0.487" | 0.062" | Rockwell B90 | ASME B18.21.1 | 100 | 000000000 | 00000 |
5/16" | 0.322" | 0.583" | 0.078" | Rockwell B90 | ASME B18.21.1 | 50 | 000000000 | 00000 |
3/8" | 0.385" | 0.680" | 0.094" | Rockwell B90 | ASME B18.21.1 | 25 | 000000000 | 00000 |
7/16" | 0.450" | 0.776" | 0.109" | Rockwell B90 | ASME B18.21.1 | 10 | 000000000 | 0000 |
1/2" | 0.512" | 0.869" | 0.125" | Rockwell B90 | ASME B18.21.1 | 10 | 000000000 | 0000 |
5/8" | 0.641" | 1.073" | 0.156" | Rockwell B90 | ASME B18.21.1 | 5 | 000000000 | 0000 |
3/4" | 0.766" | 1.265" | 0.188" | Rockwell B90 | ASME B18.21.1 | 5 | 000000000 | 00000 |
1" | 1.024" | 1.656" | 0.250" | Rockwell B90 | ASME B18.21.1 | 5 | 000000000 | 00000 |