Use with Ref 70 bolts in heavy duty applications.

• Available in Zinc-Plated Steel / Stainless Steel 304
• Locates over 4 lugs on bolt head, increasing effective bolt head size and bolt holding
• Belt must be thick enough to absorb the washer and / or the bucket belt holes should be recessed
• Not recommended on pulley diameters of less than 20” (500mm)
• Fit the longest part of the oval across the belt width