ASTM A193 grade B7 bolts are made for alloy steel and heat treated to achieve high tensile and yield strengths capable of high temperature or high-pressure service. It's versatility sees its application in valves, vessels, flanges and wellhead assemblies. We supply bolts with 2 nuts as well as tap end studs with 1 nut. Apache Pressure Products' bolts comes with either black finish or yellow zinc/cad plated.