Content with Form G

04 April 2022
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