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| オーエスジーアクティブ株式会社 | ||||||||
| オーエスジーグルンドテック株式会社 | ||||||||
| OSG System Products Co., Ltd. | ||||||||
| オーエスジー販売株式会社 | ||||||||
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| Aoyama Manufacturing Co., Ltd. |
Started manufacturing and selling taps and dies
Hideo Osawa established OSG Grinding Co., Ltd. in Tokyo and started the manufacturing and sales of taps and dies.
Osawa Hideo established the Osawa Screw Grinding Plant in Tokyo and began manufacturing and selling taps and dies.
The company began manufacturing and selling screw gauges.
Started manufacturing screw gauges.
Started the manufacturing and sales of screw gauges.
The company started manufacturing and sales of rolling dies.
Started manufacturing forged round dies.
Started the manufacturing and sales of rolling dies.
The company changed its name to OSG MFG. Company.
Renamed the company to OSG Co., Ltd.
Changed the company name to OSG MFG. Company.
Established OSG Corporation as the sole agent for OSG products in Japan.
Separated the sales division and established OSG Sales Corporation
The company was listed on the 2nd Section of the Nagoya Stock Exchange.
Listed on the Nagoya Stock Exchange Second Section
Stock listed on the 2nd Section of the Nagoya Stock Exchange.
Current OSG USA
Established OSG Tap and Die, Inc. in Chicago, U.S.A. (renamed OSG USA, Inc.)
Established OSG Tap and Die (USA) (now OSG USA)
Established OSG Tap and Die, Inc. in Chicago, U.S.A. (Renamed OSG USA, Inc.)
Established Taiho Tool Mfg. Co., Ltd. in Taiwan.
Established Taibo Precision Tools (Taiwan)
Started manufacturing and sales of HSS End mills.
Started manufacturing high-end mills
Started the manufacturing and sales of HSS End mills.
Current OSG Sulamericana de Ferramentas
Established OSG Ferramentas de Precisão Ltda. in Brazil (renamed OSG Sulamericana de Ferramentas Ltda. in 2009).
Established OSG Ferramentas de Precisão (Brazil) (now OSG Sulamericana de Ferramentas)
Established OSG Ferramentas de Precisão Ltda. in Brazil. (Renamed OSG Sulamericana de Ferramentas Ltda. in 2009.)
Started manufacturing and sales of carbide end mills.
Started manufacturing carbide end mills
Started the manufacturing and sales of carbide end mills.
Stock listed on the 1st Section of the Tokyo and Nagoya Stock Exchanges.
Listed on the Tokyo Stock Exchange and Nagoya Stock Exchange First Section
Started manufacturing and sales of drills.
Started manufacturing drills
Started the manufacturing and sales of drills.
Established OSG Korea Corporation.
Established OSG Korea
Established OSG Canada Ltd.
Established OSG Canada
No records of developments from 1990 to 2009
Merged OSG MFG. Company and OSG Corporation into OSG Corporation.
OSG MFG. Company and OSG Corporation were merged into OSG Corporation.
Established OSG Asia Pte. Ltd. in Singapore.
Established OSG Royco, S.A. de C.V. in Mexico.
Established OSG Thai Co., Ltd.
Established OSG Europe S.A. as a holding company in Belgium, OSG Europe Logistics S.A., and OSG France s.a.r.l.
Established OSG Europe S.A. as a holding company in Belgium.
Established OSG Europe Logistics S.A. in Belgium.
Established OSG France s.a.r.l.
Established OSG UK Limited.
Established OSG Scandinavia A/S in Denmark.
Established OSG (Shanghai) Co., Ltd.
Current OSG Iberica Tooling, S.L.
Established OSG Tooling Iberica, S.L. in Spain (renamed OSG Iberica Tooling, S.L.).
Established OSG Tooling Iberica, S.L. in Spain. (Renamed OSG Iberica Tooling, S.L.)
Established OSG GmbH in Germany.
Established OSG Italia S.R.L. in Italy.
Established OSG (India) Pvt, Ltd.
Established PT. OSG Indonesia.
Current OSG Netherlands
Established OSG Vietnam Co., Ltd. and OSG Philippines Corporation.
Established OSG Vietnam Co., Ltd.
Established OSG Mac World Netherlands B.V. (Renamed OSG Netherlands B.V.)
Established OSG Philippines Corporation.
No records of developments after 2010
Established OSG Turkey
Established OSG Turkey Cutting Tools Industry and Trade Inc.
Established OSG Poland
Established OSG Poland Sp. z.o.o.
Current OSG ROMANIA SRL
Established Romsan International (Romania) (now OSG ROMANIA SRL)
Established Romsan International Company S.R.L. in Romania. (Renamed OSG ROMANIA SRL)
Current NEXAM S.A.S
Acquired DESGRANGES HOLDING (France) (now NEXAM S.A.S)
Acquired DESGRANGES HOLDING (France) (now NEXAM S.A.S)
Acquired Amamco Tool & Supply (USA)
Acquired Amamco Tool & Supply (U.S.A.)
Acquired Somta Tools (South Africa)
Acquired Somta Tools (South Africa)
Acquired OSG BASS Holding GmbH (Germany)
Acquired OSG BASS Holding GmbH (Germany)
Acquired Contour Fine Tooling B.V. in Netherlands.
Acquired Contour Fine Tooling B.V. (Netherlands)
Acquired Contour Fine Tooling B.V. (Netherlands)
OSG Corporation announced the opening of its new office, the Toyokawa Station Front Office, located within FRONTIS TOYOKAWA. The office will begin operations on November 15, 2026, with business activities starting on Monday, November 16, 2026. The new location is chosen for its high accessibility to strengthen customer and partner relationships and improve service quality.
OSG Corporation began selling new products on November 5, 2026. The main products are A-OIL-SFT (High‑Efficiency Multi‑Purpose Spiral Flute Tap with Cooling Holes) and A-SFT-H42 (Spiral Tap for Medium‑Hardness Steel). A-OIL-SFT is available in 17 sizes from M6×1 to M20×1.5, delivering excellent performance across a wide range of work materials and machine types.
OSG received the Technical Achievement Award at the 2026 Japan Machine Tool Industry Association Awards. The award was for the development of the high-performance, low-carbon type forging tap ZERO-BT (GRT).
We are introducing the products released in November: the oil-hole spiral tap "A-OIL-SFT", the medium-hardness steel tap "A-SFT-H42", the deep-hole tap "A-SFT-DH", and the horizontal processing machine tap "A-SFT-HMC". Additionally, we have added four items to the high-performance, low-carbon type forging tap "ZERO-BT(GRT)".
OSG Corporation will open the "Toyokawa Station Front Office" within FRONTIS TOYOKAWA and commence operations on November 16, 2026. Leveraging transportation convenience, we will deepen relationships with customers and partners, enhance services, and create a more employee-friendly work environment, while also contributing to regional revitalization.
OSG Corporation announced the status and completion of its share repurchase program in accordance with Article 165, paragraph 2 of the Companies Act. The notice confirms that the repurchase has been completed and provides details of the transaction.
オーエスジー株式会社は、2026年10月9日に開催された取締役会で、会社法第165条第3項に基づく自己株式取得を決議しました。取得状況については、現在の保有株数と取得価格等の詳細が記載されています。取得は、同法第156条の規定により読み替えて適用されます。
OSG temporarily suspended its digital catalog, product search, product list, and official mobile app “Pro Catalog” for system maintenance. The company apologized for any inconvenience.
We are suspending the digital catalog, "Find Products", product list within product information pages, and the official app "Pro Catalog" due to system maintenance. We ask users to understand.
We announced the product 'EYE-TC', a thread pitch effective diameter measuring instrument, scheduled for release on October 15. It offers 38 items ranging from M8×1.25 to M30×1.5.