Anchor Bolts and Thereaded Rods

An anchor bolt is used to attach objects or structures to concrete. There are many types of anchor bolts, consisting of designs that are mostly proprietary to the manufacturing companies. All consist of a threaded end, to which a nut and washer can be attached for the external load. Anchor bolts are extensively used on all types of projects, from standard buildings to dams and nuclear power plants. They can also be used to firmly affix embed plates to a concrete foundation when used with a structural steel element.

All thread rod, commonly referred to as fully threaded rod, redi-rod, continuously threaded rod, and abbreviated ATR is used for general purpose fastening for anything from an anchor bolt to a through bolt. A variety of grades and materials are available including stainless steel. For high strength fasteners, one cannot simply substitute all thread rod for a headed bolt without a significant loss in strength. To learn why you may assume a tremendous amount of liability by making such a substitution, check out Headed Anchor Bolts vs. Rod with a Nut.