Chain dimensions form

We ask for the outer width and outer length of the chain link because it is easier for you to measure. You can submit either measurements or photos through the below form. If submitting photos if digital calipers please ensure the screen is visible.

Chain Size Iso G30 Proof Coil

Width Length
Chain size Diameter
wd
Outer
ow
Inner
iw
Outer
ol
Pitch
il
mm in mm in mm in mm in mm in
3/16in 5.5 0.217 10.0 0.394 24.6 0.969
1/4in 7.0 0.276 12.7 0.500 25.4 1.000
5/16in 8.4 0.331 12.7 0.500 28.5 1.122
3/8in 10.0 0.394 15.8 0.622 31.0 1.220
1/2in 13.0 0.512 20.6 0.811 38.0 1.496

Source: http://coxeng.co.uk/anchoring/chain/