Thread Size (dia x pitch) (mm): M30X3.5 Bolt Length (mm): 220 Head Height (mm): 19 Bolt Type: Hex Head Coating: Zinc Flake Drive (mm): 46 Material: STEEL Grip Length (mm): 135 Thread: Coarse Material ISO 898-1 Class 10.9. Head Marking - 10.9 (1040 MPa Ultimate Tensile Strength) Thread Size (mm): M30 Hole Thread Pitch: 3.50 Total Bolt Length - 3 (mm): 220 Finish: Zinc Flake Head Width - 5 (mm): 46 Head Height - 4 (mm): 19 Grip Length - 2 (mm): 135 Grade: 10.9 Finish Notes: Caterpillar is changing from Zinc Plating to a Zinc Flake finish for many bolts. The new coating improves corrosion protection to 720 hours. Until stock of the current plating is depleted, you may receive either finish due to the exhaust process. Overall Length (mm): 220 Color Notes: Bolts sizes M6 through M12 with the new Zinc Flake finish will be black. Bolts sizes M14 through M36 with the new Zinc Flake finish will be gray. Until stock of the current finish is depleted, you may receive either the current or new bolt color.