Bolt Length (mm): 55 Bolt Type: Hex Head Coating: Zinc Flake Grip Length (mm): 29 Thread: Coarse Head Width - 5 (mm): 16 Head Height - 4 (mm): 6 Grip Length - 2 (mm): 39 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. Thread Size (dia x pitch) (mm): M10 x 1.50 Total Bolt Length - 3 (mm): 55 Finish: Zinc Flake 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.