100Pcs DIN471 GB894 M3 M4 M5 M6 Gourd Type Washer 304 Stainless Steel C-type Elastic Ring External Circlip Snap Retaining HW100100Pcs DIN471 GB894 M3 M4 M5 M6 Gourd Type Washer 304 Stainless Steel C-type Elastic Ring External Circlip Snap Retaining HW100