Description
| 
 Material 
 | 
 18-8 Stainless Steel  | 
| 
 For Screw Size
 
 | 
 1/4“  | 
| 
 ID 
 | 
 0.260″  | 
| 
 OD 
 | 
 0.487″  | 
| 
 Thickness 
 | 
 0.062″  | 
| 
 Washer Type 
 | 
 Split Lock  | 
| 
 Split Lock Washer Type 
 | 
 Standard  | 
| 
 System of Measurement 
 | 
 Inch  | 
| 
 Hardness 
 | 
 Rockwell C35  | 
| 
 Specifications Met 
 | 
 ASME B18.21.1  | 
| 
 RoHS 
 | 
 RoHS 3 (2015/863/EU) Compliant  | 
| 
 REACH 
 | 
 REACH (EC 1907/2006) (01/23/2024, 240 SVHC) Compliant  | 
| 
 DFARS 
 | 
 Not Specialty Metals Compliant  | 
| 
 Country of Origin 
 | 
 Italy, Peoples Republic of China, Taiwan, or United States  | 
| 
 USMCA Qualifying 
 | 
 No  | 
| 
 Schedule B 
 | 
 731821.0000  | 
| 
 ECCN 
 | 
 EAR99  | 
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.
18-8 stainless steel washers have good chemical resistance and may be mildly magnetic.
Washers that meet ASME B18.21.1 adhere to strict dimensional standards.






