- Washer Type: Flat Washer, 0
- Unit of Measurement: Inch/Metric, 0
- Hardened: 0, Yes
- Fits Bolt Sizes (in): 0, 1/2
- Finish Notes: 0, Caterpillar is changing from Zinc Plating to a Zinc Flake finish for many washers. The new coating improves corrosion protection to 720 hours. Until stock of the current finish is depleted, you may receive either finish due to the exhaust process.
- Finish: 0, Zinc Flake