[M5 20pcs]

[M3 50pcs]

Features:
When using countersunk screws, you will need to "sagiri" the other material, but by using a rosette washer, you can use the countersunk screws without any processing, eliminating the process.
Washers for countersunk and round countersunk screws.
Also known as the Yamagata Washer. [Use]
For use with round countersunk machine screws and wood screws. Specifications:
Nominal Diameter: M4
Outer Diameter: 0.5 inches (12 mm)
Inner diameter: 0.18 inches (4.5 mm)
Thickness: 0.1 inch (2.5 mm) (Material/Finish)
Brass
Nickel plated. Set Contents: Note: