Idaho's premier fastener supplier since 1950. Extensive inventory of bolts, nuts, screws, washers, anchors, and specialty fasteners. Grade 5 and Grade 8 bolts, stainless steel fasteners, metric and standard hardware for construction and manufacturing. Our Boise team provides expert fastener selection guidance. Free delivery in Treasure Valley. From heavy hex bolts to precision fasteners, we stock quality products for every industrial application. Trust Kowallis Pro for reliable fastening solutions.