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M16 nut size
24 mm wrench
wrench size for M16 hex nut
M16 hex nut — standard metric hexagonal nut.
Full specification
| System | Metric |
| Nominal diameter | 16 mm |
| Wrench size (across flats) | 24 mm |
| Nut thickness | 13 mm |
| Common grade / class | Class 8 |
About M16 nuts
M16 hex nuts are standard metric hexagonal nuts used with M16 bolts and threaded rods.
The wrench size 24 mm is measured across the flats of the hexagon. The nut thickness is 13 mm.
Class 8 indicates the strength rating. These nuts are suitable for general-purpose applications.
Frequently asked questions
- What size wrench fits M16 nut?
- M16 nut uses a 24 mm wrench.
- How thick is a M16 nut?
- A standard M16 hex nut is 13 mm thick.
- What is the difference between M16 nut classes?
- Class Class 8 indicates the strength rating. Higher numbers mean stronger nuts.