I am doing quite a bit of maintenance at the moment (more on that in future posts).
I had to replace a couple of bolts that were badly damaged but didn’t know the size. All I had was the spanner/socket size. Here is a list of spanner/socket size vs bolt size which came in very handy.
| Bolt Size | Socket/Spanner Size |
| M3 | 5.5mm |
| M4 | 7mm |
| M5 | 8mm |
| M6 | 10mm |
| M7 | 11mm |
| M8 | 13mm |
| M10 | 17mm |
| M12 | 19mm |
| M14 | 22mm |
| M16 | 24mm |
| M18 | 27mm |
| M20 | 30mm |
| M22 | 32mm |
| M24 | 36mm |
M18 to M24 sockets are incorrect sizes on your chart.
Typo on M24 should have been 36 not 26. All the rest appear correct to me.
Thanks for bringing typo to my attention though 🙂