Generally to BS 4-1:1971
Note this has been superseded and the most recent standard should be used for new designs.
| Serial Size | Leg Lengths AxB | t | M | R1 | R2 | Area |
| mm | mm | mm | kg | mm | mm | cm2 |
| 203 x 203 | 203.2 x 203.2 | 25.3 | 76.00 | 15.2 | 4.8 | 96.81 |
| 23.7 | 71.51 | 15.2 | 4.8 | 91.09 | ||
| 22.1 | 67.05 | 15.2 | 4.8 | 85.42 | ||
| 20.5 | 62.56 | 15.2 | 4.8 | 79.69 | ||
| 18.9 | 57.95 | 15.2 | 4.8 | 73.82 | ||
| 17.3 | 53.3 | 15.2 | 4.8 | 67.89 | ||
| 15.8 | 48.68 | 15.2 | 4.8 | 62.02 | ||
| 152 x 152 | 152.4 x 152.4 | 22.1 | 49.32 | 12.2 | 4.8 | 62.83 |
| 20.5 | 46.03 | 12.2 | 4.8 | 58.63 | ||
| 19.0 | 42.75 | 12.2 | 4.8 | 54.45 | ||
| 17.3 | 39.32 | 12.2 | 4.8 | 50.09 | ||
| 15.8 | 36.07 | 12.2 | 4.8 | 45.95 | ||
| 14.2 | 32.62 | 12.2 | 4.8 | 41.55 | ||
| 12.6 | 29.07 | 12.2 | 4.8 | 37.03 | ||
| 11.0 | 25.60 | 12.2 | 4.8 | 32.61 | ||
| 9.4 | 22.02 | 12.2 | 4.8 | 28.06 | ||
| 127 x 127 | 127.0 x 127.0 | 19.0 | 35.16 | 10.7 | 4.8 | 44.80 |
| 17.4 | 32.47 | 10.7 | 4.8 | 41.37 | ||
| 15.8 | 29.66 | 10.7 | 4.8 | 37.78 | ||
| 14.2 | 26.80 | 10.7 | 4.8 | 34.14 | ||
| 12.6 | 23.99 | 10.7 | 4.8 | 30.56 | ||
| 11.0 | 21.14 | 10.7 | 4.8 | 26.93 | ||
| 9.5 | 18.3 | 10.7 | 4.8 | 23.31 | ||
| 102 x 102 | 101.6 x 101.6 | 19.0 | 27.57 | 9.1 | 4.8 | 35.12 |
| 17.4 | 25.48 | 9.1 | 4.8 | 32.45 | ||
| 15.8 | 23.37 | 9.1 | 4.8 | 29.78 | ||
| 14.2 | 21.17 | 9.1 | 4.8 | 26.96 | ||
| 12.6 | 18.91 | 9.1 | 4.8 | 24.09 | ||
| 11.0 | 16.69 | 9.1 | 4.8 | 21.27 | ||
| 9.4 | 14.44 | 9.1 | 4.8 | 18.39 | ||
| 7.8 | 12.06 | 9.1 | 4.8 | 15.37 | ||
| 89 x 89 | 88.9 x 88.9 | 15.8 | 20.10 | 8.4 | 4.8 | 25.61 |
| 14.2 | 18.31 | 8.4 | 4.8 | 23.32 | ||
| 12.6 | 16.38 | 8.4 | 4.8 | 20.87 | ||
| 11.0 | 14.44 | 8.4 | 4.8 | 18.40 | ||
| 9.4 | 12.50 | 8.4 | 4.8 | 15.92 | ||
| 7.9 | 10.58 | 8.4 | 4.8 | 13.47 | ||
| 6.3 | 8.49 | 8.4 | 4.8 | 10.81 | ||
| 76 x 76 | 76.2x76.2 | 14.3 | 15.50 | 7.6 | 4.8 | 19.74 |
| 12.6 | 13.85 | 7.6 | 4.8 | 17.64 | ||
| 11.0 | 12.20 | 7.6 | 4.8 | 15.55 | ||
| 9.4 | 10.57 | 7.6 | 4.8 | 13.47 | ||
| 7.8 | 8.93 | 7.6 | 4.8 | 11.37 | ||
| 6.2 | 7.16 | 7.6 | 4.8 | 9.12 | ||
| 64 x 64 | 63.5 x 63.5 | 12.5 | 11.31 | 6.9 | 2.4 | 14.41 |
| 11.0 | 10.12 | 6.9 | 2.4 | 12.89 | ||
| 9.4 | 8.78 | 6.9 | 2.4 | 11.18 | ||
| 7.9 | 7.45 | 6.9 | 2.4 | 9.48 | ||
| 6.2 | 5.96 | 6.9 | 2.4 | 7.59 | ||
| 57 x 57 | 57.2 x 57.2 | 9.3 | 7.74 | 6.6 | 2.4 | 9.86 |
| 7.8 | 6.55 | 6.6 | 2.4 | 8.35 | ||
| 6.2 | 5.35 | 6.6 | 2.4 | 6.82 | ||
| 4.6 | 4.01 | 6.6 | 2.4 | 5.11 | ||
| 51 x 51 | 50.8 x 50.8 | 9.4 | 6.85 | 6.1 | 2.4 | 8.72 |
| 7.8 | 5.80 | 6.1 | 2.4 | 7.39 | ||
| 6.3 | 4.77 | 6.1 | 2.4 | 6.08 | ||
| 4.6 | 3.58 | 6.1 | 2.4 | 4.56 | ||
| 45 x 45 | 44.5 x 44.5 | 7.9 | 5.06 | 5.8 | 2.4 | 6.45 |
| 6.1 | 4.02 | 5.8 | 2.4 | 5.12 | ||
| 4.7 | 3.13 | 5.8 | 2.4 | 3.99 | ||
| 38 x 38 | 38.1 x 38.1 | 7.8 | 4.24 | 5.3 | 2.4 | 5.4 |
| 6.3 | 3.50 | 5.3 | 2.4 | 4.46 | ||
| 4.7 | 2.68 | 5.3 | 2.4 | 3.41 | ||
| 32 x 32 | 31.8 x 38.1 | 6.2 | 2.83 | 5.1 | 2.4 | 3.61 |
| 4.6 | 2.16 | 5.1 | 2.4 | 2.75 | ||
| 3.1 | 1.49 | 5.1 | 2.4 | 1.90 | ||
| 25 x 25 | 25.4 x 25.4 | 6.4 | 2.23 | 4.6 | 2.4 | 2.84 |
| 4.7 | 1.72 | 4.6 | 2.4 | 2.19 | ||
| 3.1 | 1.19 | 4.6 | 2.4 | 1.52 | ||
Assumed density utilised for mass : 7830 kg/m^3
All dimensions are in millimetres.
Note provided for information only, information has not been checked by an independent source, therefore if you use this information you do so at your risk.