| Bolts Pitch: | 2.50P |
| Grade: | Grade 8.8 |
| Bolts Diameter: | M18 |
| Bolts Material: | Steel |
| Finish: | Bright Zinc Plated and Clear Passivation |
| Head Type: | Hex Head |
| Thread Type: | Metric Coarse |
| Length Under Head: | 60mm |
| Tapping Drill Size: | 15.5mm |
M18 bolts have an 18mm thread diameter and a standard coarse pitch of 2.5mm. A less common intermediate size, mostly specified for heavy machinery and engineering work.