Content with BS 4320

Nominal size Inside diameter (d1) Outside diameter (d2) Thickness (s) nom. max. min. nom. max. min. nom max. min. M5 5.5 5.8 5.5 15 15 14.2 1.6 1.9 1.3 M6 6.6 7.0 6.6 18 18 17.2 2 2.3 1.7 M8 9 9.4 9.0 24 24 23.2 2 2.3 1.7 M10 11 11.5 11.0 30 30 29.2 2.5 2.8 2.2 M12 14 14.5 14.0 36 36 34.8 3 3.6 2.4 M16 18 18.
Read more about BS 4320 Basic dimensions Form G washers for selected sizes ↬

Nominal size Inside diameter (d1) Outside diameter (d2) Thickness (s) min. BS 4320 max. DIN 125-1 max. BS 4320 min. BS 4320 max. DIN 125-1 min. DIN 125-1 max. min. max. M5 5.3 5.5 5.48 9.7 10 9.64 10 0.9 1.1 M6 6.4 6.7 6.62 12.1 12.5 11.57 12 1.4 1.8 M8 8.4 8.7 8.62 16.6 17 15.57 16 1.4 1.8 M10 10.5 10.9 10.77 20.5 21 19.48 20 1.
Read more about BS 4320 / DIN 125-1 Basic dimensions Form A washers for selected sizes ↬