Timber bolts are also known as dome or mushroom head bolts due to the oversized rounded head style. The underside of the large heads offer nubs/fins for improved grip. Installation is accomplished with a pre-drilled hole which also helps to avoid splintering of the base material, typically wood. Fasteners Etc., Inc. offers timber bolts in A307, grade A strength with a galvanized finish for improved corrosion resistance.
