Known as: spring washer / spring washer b 10 x 18 / spring washer b 10x18 g 509 1001 >> 509 1788 g 539 0101 >> 539 0101 g 519 1501 >> 519 3619 g 709 1001 >> 709 1469 g 719 3001 >> 719 8787 g 739 0101 >> 739 0109 g 739 1101 >> 739 1102 g 739 2101 >> 739 2118 g 739 3101 >> 739 3106 g 739 4101 >> 739 4109 g 729 0001 >> 729 1044 / spring washer b 10x28 / spring washer b 10