Timber bolts, also known as mushroom head bolts or dome head bolts, can be used in both marine and wood applications. The oversized head of the timber bolt eliminates the need for a washer on the bolt head end. The underside of the oversized, rounded bolt head has fins which prevent the bolt from turning in the timber. Browse our selection of timber bolts and order online before you start your next project. If you don’t see the item you’re looking for contact one of our knowledge staff members. With thousands of varying types of bolts in stock, we have the one you need!