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11,954 / 92

Million Yen / Euro

FY2017 Turnover
120,198 / 931

Million Yen / Euro (consolidated)

Number of employees


Stock exchange code

Stock exchange
Tokyo & Nagoya Stock Exchange


Aichi, Japan-based OSG Corporation is the world’s largest manufacturer of round cutting tools. Established in 1938, OSG has a longstanding reputation as a total solution cutting tool provider throughout the manufacturing industry.

 OSG holds the No. 1 position in the Japanese cutting tool market as well as a top-ranking position globally, with a production, sales and technical network spanning 33 countries.

“O” stands for OSAWA, our founder

“S” stands for SCREW

“G” stands for GRINDING


Product development timeling

Net sales by product

OSG enjoys high market share globally in three of its core product offering - taps, rolling dies and end mills.

Absolute quality control

OSG maintains absolute control over every aspect of our manufacturing capabilities. OSG products are produced in-house – from the production of tool material, creation of tool geometry, to the development of our own proprietary coatings – the vital elements in the manufacturing of superior cutting tools.