Foundation bolts are designed for use in masonry, concrete foundation and the like. Foundation bolts are used in the Pre Engineered Buildings , Sheds, and Fixing of Heavy Machine to the floor. The form and design of the shank is optional but compliance is required for the maximum dimensions specified (space requirement dimensions ). The standard IS 5624, 1993 (Reaffirmed 1998), specifies property class 4.6 for foundation bolts as the bolts are generally used with this property class. However, due to space constraints, it may be essential to use bolts having property class higher than 4.6 which shall be subject to agreement between the purchaser and manufacturer.