Beenlen 295 Pcs 304 Stainless Steel Spring Wave Washer M3 to M12, Silver
7 Most Used Sizes: The spring wave washer size includes M3, M4, M5, M6, M8, M10, M12. How it Works: This spring wave washers rely on spring force to resist vibration loosening, these wave springs were chosen to maintain light loads in tight spaces.