Our ASTM F1554 grade 55 hardened threaded rod is manufactured here in the USA to the highest quality standards. F1554 all-thread is typically used for structural anchoring but is also commonly used to anchor down light poles and stop lights. All of our threaded rod sections feature cut threads which means they start off as the full size round stock and threads are cut into the material. The plain finish is designed for indoor use only where there aren't any chemicals or solvents present.