| 1915 |
Founded in Fukagawa-ku, Tokyo. (currently, Koto-ku, Tokyo) |
| 1920 |
Started production of oxygen welding rod. |
| 1928 |
Started production of wood screws, machine screws, materials for rivets |
| 1933 |
Opened Sunamachi plant and installed patenting furnace. Started production of: hard drawn steel wires for furniture and automobile seat, tire chains of material, and electric welding rod core. |
| 1934 |
Reorganized into stock company. |
| 1935 |
Head office and Tokyo plant moved to current location. (3-1-12 Higashi Sumida, Sumida-ku, Tokyo) |
| 1940 |
Established Sugita Shoji Co.,Ltd. Started production of steel wire for aircraft screw. |
| 1944 |
Capital was increased for 1 million yen. |
| 1945 |
Due to the massive Tokyo air raid in March, 95% of all plants were devastated to ashes, bur managed to re-start operation 2 months afterward. |
| 1948 |
Raised capital to 3 million yen. Started basic researches on cold heading steel wire. |
| 1951 |
Raised capital to 6 million yen. |
| 1952 |
Raised capital to 10 million yen. Started production of cold heading high carbon steel wire, and shipped as screw materials for telecom equipment and automobile parts. |
| 1953 |
Raised capital to 20 million yen. |
| 1954 |
Exported steel wire and steel spring wire to Brazil. Started production of cold heading alloy steel wire, and shipped as high-strength bolt material for automobile. |
| 1955 |
Installed Japan-made high-speed continuous wire drawing machine. |
| 1956 |
Raised capital to 40 million yen. Started to export steel wire for screw to the United States. |
| 1958 |
Raised capital to 50 million yen. Installed oil tempered furnace and started production of alloy steel oil tempered wire for automobile hanging spring. Obtained permission (No. 3523) to label our steel wires as certified by Japanese Industrial Standards. |
| 1959 |
Raised capital to 60 million yen. |
| 1960 |
Raised capital to 100 million yen. Obtained permission (No. 3521) to label our hard drawn steel wires as certified by Japanese Industrial Standards. |
| 1962 |
Raised capital to 125 million yen. Started to export oil tempered wire to the United States. |
| 1963 |
Raised capital to 150 million yen. |
| 1964 |
Raised capital to 200 million yen. |
| 1965 |
Jointly with Kobe Steel, Ltd. and Nissho Iwai Corporation (currently Sojitz Corporation), Sugita established Shinko Sugita Wire,Ltd., as second main manufacturing unit of Sugita Wire group. |
| 1969 |
Started production of cold heading LH steel wire for 7T, 8.8 bolts. |
| 1970 |
Shinko Sugita Wire,Ltd. raised capital to 150 million yen. |
| 1971 |
Shinko Sugita Wire,Ltd. raised capital to 200 million yen. Installed roller hearth type continuous spherical annealing furnace. |
| 1973 |
Shinko Sugita Wire,Ltd. raised capital to 300 million yen. |
| 1977 |
Developed facility to produce inorganic polymer flocculants ('Poritetsu') to treat water used in plants, and started actual production of 'Poritetsu', which marked a completion of recycling system of waste sulfuric. |
| 1984 |
Jointly developed and installed unmanned night operation system for STC annealing furnace with Daido Steel Co., Ltd． |
| 1990 |
Started measurement certification business, a function as analytic entity. |
| 1994 |
Sugita's SRS60 high strength oil tempered wire was chosen to produce automobile hanging spring in the U.S. Decided to hold stake in Laclede Mid-America, a subsidiary of Laclede Steel Company in the U.S., and signed a contract to supply technology related to production of high-strength oil tempered wire. |
| 1997 |
Merged with Shinko Sugita Wire,Ltd. and raised capital to 220.4 million yen. Changed company name from Sugita Wire Plant to Sugita Wire, Ltd. |
| 1999 |
Acquired ISO 9002 and QS-9000 certificates in quality management system for oil tempered wires. Signed a contract with Nanjing Baori wire Products Mfg.Co.,LTD（Nanjing）, an affiliated company of Shanghai Baoshan General Iron and Steel, China's largest steel manufacturer, to supply technology related to production and secondary processing of wire for screws and springs. |
| 2000 |
ISO 9002 quality management system extended to cover all products, and acquired certificates for all. Quality management system ISO 9002 was also applied to all products except chemicals, and were certified to meet the required standards. |
| 2002 |
Acquired certificate for ISO 14001, an environmental management system standard. |
| 2004 |
Piano wire produced in Tokyo plant won approval to label that the product satisfies Japan Industrial Standard (JIS). Certificate number is JIS G 3522. Established a joint company Kobe Wire Products (Foshan) Co., Ltd. in City of Foshan, Guangdong Province, China, as production base for cold heading steel wire. |
| 2005 |
Established a joint company Jiangyin Sugita Fasten Spring Wire Co., Ltd. (JYSF) in Jiangyin, Jiangsu Province, China as production base for oil tempered wire, and took a stake in the entity. Acquired certificates for quality management system ISO/TS 16949：2002. Decided to apply for certificates ISO 9001:2000. |
| 2006 |
Completed construction of second annealing plant in Tokyo plant and administrative office in headquarters. Installed cogeneration system at Tokyo plant. |
| 2009 |
Installed enegy-saving roller hearth continuous annealing furnace into Ichikawa plant, with financial support from government-affiliated NEDO (New Energy and Industrial Technology Development Organization). |
| 2013 |
Installed Productive Order-Process Control System (POCS). (a transfer of production management system to a new scheme) |
| 2013 |
Introduced solar power generation system into Tokyo plant. |
| 2015 |
Marked 100th anniversary since company foundation. |
