Chain Size Grade 30 BBB
| Width | Length | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Chain size | Diameter A |
Outer B |
Inner C |
Outer D |
Pitch E |
|||||
| mm | in | mm | in | mm | in | mm | in | mm | in | |
| 1/4in | 7.1 | 0.281 | 25.1 | 0.990 | 10.9 | 0.430 | 36.3 | 1.430 | 22.1 | 0.870 |
| 5/16in | 8.7 | 0.343 | 30.2 | 1.190 | 12.7 | 0.500 | 43.0 | 1.691 | 25.4 | 1.000 |
| 3/8in | 10.3 | 0.406 | 36.3 | 1.430 | 15.7 | 0.620 | 48.3 | 1.901 | 27.7 | 1.090 |
| 1/2in | 13.5 | 0.531 | 46.0 | 1.810 | 19.1 | 0.750 | 61.0 | 2.401 | 34.0 | 1.340 |
Source: http://coxeng.co.uk/anchoring/chain/