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M8×1.0 fine pitch bolt size
13 mm wrench
wrench size for M8×1.0 fine pitch bolt
M8×1.0 fine pitch bolt — High-vibration applications, precision machinery.
Full specification
| System | Metric fine |
| Nominal diameter | 8 mm |
| Thread pitch (fine) | 1.0 mm |
| Wrench size | 13 mm |
| Tap drill | 7.0 mm |
| Clearance hole | 9 mm |
| Common grade / class | 10.9 |
| Typical torque | 25 Nm (18.4 ft·lb) |
🔧 Torque unit converter
Pre-filled with typical torque for M8×1.0 (10.9).
About M8×1.0 fine pitch bolts
High-vibration applications, precision machinery.
Fine pitch threads (1.0 mm) have more threads per unit length than coarse threads. This provides:
- Better resistance to vibration loosening
- Finer adjustment capability
- Higher tensile stress area (stronger)
- More susceptible to galling and thread damage
Common applications include automotive engines, aerospace, and precision machinery where vibration resistance is critical.
Frequently asked questions
- What size wrench fits M8×1.0 bolt?
- M8×1.0 bolt uses a 13 mm wrench.
- What is the torque for M8×1.0 bolt?
- Typical torque for M8×1.0 bolt in 10.9 is about 25 Nm (18.4 ft·lb).
- What is the difference between fine and coarse thread?
- Fine thread (1.0 mm pitch) has more threads per unit length than coarse thread. Fine threads offer better vibration resistance and finer adjustment.