Timber bolts are round head bolts with small fins or nubs under the head which are designed to grip wood. The outside diameter of the bolt head is large in order to have a better grip and also eliminates the need for a washer. Timber bolts are partially threaded and are steel hot dip galvanized. Timber bolts are also known as dome head, fender head, mushroom head, and economy bolts. Available and ready-to-ship in a variety of sizes. Browse our selection of timber bolts for your building projects and industrial applications.