Basic dimensions for Form A Washers (BS 4320 / DIN 125 Part 1) - Andrews Fasteners CE Approved Bolts, Nuts & Washers
Andrews Fasteners Limited
0113 246 9992
+44 (0) 113 246 9992
Basic dimensions for Form A Washers (BS 4320 / DIN 125 Part 1) image

Basic dimensions for Form A Washers (BS 4320 / DIN 125 Part 1)

BS 4320 / DIN 125-1: Basic dimensions Form A washers for selected sizes

Nominal
size
Inside diameter (d1) Outside diameter (d2) Thickness (s)
min. BS 4320
max.
DIN 125-1
max.
BS4320
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 1.8 2.2
M12 13.0 13.4 13.27 23.5 24 23.48 24 2.3 2.7
M16 17.0 17.4 17.27 29.5 30 29.48 30 2.7 3.3
M20 21 21.5 21.33 36.2 37 36.38 37 2.7 3.3
M24 25 25.5 25.33 43.2 44 43.38 44 3.7 4.3
%d bloggers like this: