M6 ID x 18 OD Metric Stainless Steel Fender Washer DIN 9021 Large OD Flat Washers 1.6 Thick (25 Pieces): Amazon.com: Industrial & Scientific
Amazon.com: M6X18X1.6 Metric Din 9021 Fender Washer Zinc (Pack Qty 5,000) BC-M6D9021 by Shorpioen : Industrial & Scientific
150pcs) Metric DIN 9021 M6 Large OD Flat Washer Brass Ships Free in USA by Aspen Fasteners, ASMM22443: Amazon.com: Industrial & Scientific
3000pcs) DIN 9021 M6 Washers (6.4mm ID) OD ~ 3 x Screw Dia A2 Stainless Steel Ships Free in USA by Aspen Fasteners: Amazon.com: Industrial & Scientific