KYOWAKOGYOSYO CO.,LTD. is primarily engaged in manufacturing bolts for use in construction machinery, automobile-related and industrial machinery industries. The Construction Machinery division manufactures bolts that fasten tracks and buckets of bulldozers and others, and bolts that fasten division structures of rock drills, such as hexagon bolts, shoe bolts and nuts, hexagon socket head bolts, special bolts and others. The Automobiles-related division manufactures parts with shafts used in automobiles, and others. The Industrial Machinery division manufactures fastening bolts such as hexagon bolts and hexagon socket heat bolts. The Others division manufactures bolts used in internal combustion engines of vessels and generators, and bolts used in large buildings.