Precision Brand 17S18 - 0.018? Brass Shim Stock 6? X 100? Roll Precision Brand shim products are manufactured under rigorous quality control standards to assure high accuracy and tight tolerances. Brass Shim is made from a half hard; cold rolled, 260 alloy brass. Precision Brand is the only manufacturer to offer Branded shim. It has everything the user needs to know marked right on the shim: material type, material thickness, and lot # for full traceability. It is used in applications with corrosion problems; low magnetic permeability is required. Excellent forming qualities and may be lightly drawn, blanked, or stamped. It is beneficial for pilot production runs where material accuracy and economy are essential. Assortment of 150mm wide by 300mm long sheets contains one each of 10 different thicknesses.