M.R. Enterprises is the supplier of Thru Bolts. M.R. Enterprises is an ISO 9001:2000 certified company. Thru Bolts is available in various bolt size and length that are used for installing heavy equipment and machinery and other fixtures. Its versatile fully thread design is standard on sizes up to ¾" diameter and 7" length in respectable torque valves. It is available under the brand name HILTOP. The Thru Bolts are made up of steel and stainless steel for corrosion resistance and they come with all the features of carbon steel thru anchor.