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13,662 / 109

million yen / euro

FY2018 Sales Amount
131,368 / 1,054

million yen / euro (consolidated)

Number of employees


Stock code


Stock listing
Tokyo & Nagoya Stock Exchange


OSG Corporation is the world’s largest manufacturer of round cutting tools. Established in 1938, OSG has a longstanding reputation as a total solution round shank cutting tools 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. 

OSG is our company name and trademark:

“O” stands for OSAWA, our founder

“S” stands for SCREW

“G” stands for GRINDING


Product Development Timeline

Net sales by product

OSG enjoys high market share globally in four of its core product offering - taps, rolling dies, drills 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.