NHK Spring Co., Ltd. (日本発条株式会社, Nippon Hatsujō Kabushiki-gaisha), commonly called as NHK Nippatsu (NHKニッパツ), is regarded as one of the world's leading spring manufacturers. NHK also makes seats for automobiles, suspension systems for disk read-and-write heads used in hard-disk drives, industrial machinery & equipment and security solutions. The company shares its initials, NHK, with the Japan Broadcasting Corporation, although it registered its trademark before the establishment of the latter organization.