Compared to round washers, the contact area is wider and stabilizes the tightening surface.
It is used when soft materials such as wood and large holes.
Nominal Diameter: M18
Outer diameter: 2.0 inches (52 mm)
Inner diameter: 0.8 inches (20 mm)
Thickness: 0.18 inches (4.5 mm)
Iron
Surface treatment: Hot dipped galvanized (dob) finish
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