10mm BZP Steel Form C Washer (M10)

What are the differences between different forms of washers?

10 x 16 x 0.2mm Precision Shim Washer

Sleeve Anchor 12 x 100mm Bolt Type Pack of 25

M10 Hex Nut

Flat Washer

M5 Washer BZP Bright Zinc Plated Form G 1.6mm thick

M5 - M12 Mudguard Repair Penny Washers BZP Zinc DIN9021 – Fixaball

Heavy Duty Form C Flat Washers Zinc Plated BZP M5 M6 M8 M10 M12

Square Bolt (C Bolt) M10 x 30 mm Thread, 81 x 70 mm Internal