Metric Flat Washers Form C Bright Zinc Plated To BS 4320C

Metric Flat Washers Form C Table 2 Bright Zinc Plated Finish

M5 - M10  Are Packed In 100's

M12 - M24 Are Packed In 10's

 
Bolt Size Inside Diameter Outside Diameter Thickness
M4 4.2mm 10mm 0.8mm
M5 5.3mm 12.5mm 1.0mm
M6 6.4mm 14.0mm 1.6mm
M8 8.4mm 21mm 1.6mm
M10 10.5mm 24mm 2.0mm
M12 13mm 28mm 2.5mm
M14 15mm 30mm 2.5mm
M16 17mm 34mm 3.0mm
M18 19mm 37mm 3.0mm
M20 21mm 39mm 3.0mm
M24 25mm 50mm 4.0mm