| 1950 Mar. | Established Toyo Plus Screw Co, Ltd. in Higashi Osaka City. |
| 1953 Aug. | Nissho Iwai Corporation and NHK SPRING Co., Ltd. invested capital in Topura. |
| 1959 Jul. | Became the first company authorized by "JIS" (Japanese Industrial Standard) for manufacturing cross-recess screws. |
| 1962 Sep. | Listed on the Osaka Securities Exchange. |
| 1965 May | Mikamibyora-Kogyo Co., Ltd. merged with Toyo Plus Screw Co, Ltd. Mikamibyora-Kogyo Co., Ltd.'s Hadano plant began to manufacture specialized bolts. |
| 1972 Jan. | Alps Screw Co.,Ltd. was established. |
| 1974 Jan. | Company name was changed to Topura Co., Ltd. |
| 1975 Jul. | New plant "Katano plant" was built at Katano-City in Osaka. |
| 1987 May. | New plant "Tokai plant" in Omaezaki-City in Shizuoka was built. |
| 1997 Aug. | Topura Techno Co., Ltd. was established. |
| Nov. | Hadano, Tokai and Osaka plants FQA (Fastener Quality Act) certified. |
| 1998 Jun. | Tokai factory certified ISO 9002; Quality Management system. |
| Oct. | Osaka factory certified ISO 9001; Quality Management system. |
| 1999 Mar. | Hadano factory certified ISO 9002; Quality Management system. |
| Oct. | Changed Headquarters' Address from Higashi-Osaka-City to Hadano-City. |
| 2001 Nov. | Certified ISO 14001;Environmental Management System. |
| 2003 Jun. | Certified ISO9001-2000; Integrated Quality Management System. |
| 2007 Jan. | TOPURA AMERICA FASTENER, INC. (TAF) was established in Kentucky, USA. |
| 2010 Dec. | TOPURA PRECISION FASTENER (CHANGZHOU) CO., LTD was established in China. |
| 2011 Apr. | Established Technical Assistance Agreement with NHK Fastener do Brazil Industria Comercio Ltda. |
| 2012 Apr. | Removed from Osaka Securities Exchange. Became solely owned subsidiary of NHK Spring Co.,Ltd. |
| Aug. | New Head Quarters and a portion of the manufacturing plant were constructed at the Hadano location. |
| 2013 May. | TOPURA FASTENER DE MEXICO, S.A. DE C.V. was established in Guanajuato, Mexico. |
