This stud features threaded sections at both ends and an unthreaded shank in the middle, without bolt head. One end screws into the tapped hole of a component, and nuts are fitted on the other end to connect two parts tightly. Manufactured from carbon steel and alloy steel, strength grades 4.8, 8.8, 10.9, 12.9 optional. Available with black oxide, zinc plating, hot-dip galvanizing surface treatment. Commonly used for flange connection, machinery equipment, mold assembly and engineering facilities.