8T-5439 Washer-Hard - 6 mm Thick Hard Washer
The Hard Washer is designed for the M20 fastener and prevents the fastener from sinking into the material and distributes the load more evenly.
Bolts and matching hardened washers and nuts form a harmonious system that produces consistently high clamp loads.
Material: Hardened Steel
Washer Type: Flat Washer
Bolt Size (inches): 3/4
Material Description: Hardened Steel
Coating: Zinc plating with integrated lubrication provides medium to high-level corrosion protection and repeatable assembly performance. Red rust resistance: 720 hours of salt spray resistance. Coating color: black (M12 and smaller), gray (larger than M12).
Inside Diameter (in): 0.866
Outside Diameter (in): 1.772
Thickness (in): 0.236
Hardening:Yes
Coating Notes: Caterpillar is transitioning from Zinc Plating to Zinc Flake Coating for many washer surfaces. The new coating type provides up to 720 hours of corrosion protection. Due to the drawing method, one of these two coatings will be supplied until the current surface coating stock is depleted.
Coating Type: Zinc Flake Coating