1003866 CATERPILLAR 100-3866: M16 x 2 Thread Self Locking hex Head Bolt | Cat® Self Locking hex Head Bolt for tandem drive is used to provide a secure and vibration-resistant fastening solution for securing components within the tandem drive

Lock Mechanism: NYLON PATCH
Bolt Length (mm): 40
Thread Size (dia x pitch) (mm): M16X2
Bolt Type: Hex Head
Head Height (mm): 10
Coating: Zinc Flake
Drive (mm): 24
Grip Length (mm): 6
Material: STEEL
Thread: Coarse
Material Description: ISO 898-1 Class 10.9. Head Marking - 10.9 (1040 MPa Ultimate Tensile Strength)
Head Width - 5 (mm): 24
Head Height - 4 (mm): 10
Grip Length - 2 (mm): 6
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.
Finish: Zinc Flake
Total Bolt Length - 3 (mm): 40
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.