Timber bolts, also known as economy bolts, dome head bolts, or mushroom head bolts, are commonly used in wood dock construction. The underside of the large, rounded, low-profile head of a timber bolt has two nubs or fins which prevent the bolt from turning in the timber. Timber bolts are typically manufactured in diameters ranging from ½” through 1-1/2”. Timber bolts are most frequently hot-dip galvanized and manufactured to meet the requirements of ASTM A307 grade A. Stainless steel and high strength ASTM A449 timber bolts are also used for special applications.
|Body Diameter Max||Head Diameter||Head Height|
|* No nubs on underside of head|