ASTM A193 B7 alloy steel hex bolt full half thread bolt
ASTM A193 B7 bolts are manufactured to meet numerous specifications and material design properties. More specifically, B7 alloy steel is a high temperature grade of A-193. B7 steel is also a chromium molybdenum steel with a minimum tensile strength of 125ksi.
ASTM A193 B7 bolts and studs are made from chrome molybdenum steel and are quenched and tempered (heat treated) to produce the desired mechanical properties (strength). Grade B7 is the most commonly used A193 bolt grade in construction. B7 threaded studs and short head bolts are readily available in the market. B7 grade bolts are often used for pipe flange connections. These bolts are usually sold in a normal bare metal finish, but are usually hot-dip galvanized, galvanized, Xylan coated, PTFE coated, or otherwise treated with a corrosion resistant coating.