Spring Washer  progressive die

Inner Diameter 5.5mm, outer diameter 9mm, 12mm, and 15mm

1) Washer material: 1.2mm cold sheet

2) Die cavities: 3, optimal  material use rate 

3) One die  produce  3 types washers

4) Die steel: SKH-9, SKD11

5) Die shots: 500000pcs

6) Package:  wooden case