+44 (0) 1142825600
125 Queen Street, Sheffield, South Yorkshire, S1 2DW, UK

Superior cutting tools

The tool No. 1 in Japan

Now in Egypt


End mills



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 29 countries.

Experience the A-Brand

Product Development Timeline

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.