Aiming to be an industry leader in production output

Quality that only an industry leader can deliver.
With bases in Japan and overseas, O&K has always taken on difficult challenges. We never remain idle,

and continue to supply products of the highest caliber that always meet customer needs.

Supplying products of the highest caliber through dependable technology and quality.
We have dedicated ourselves to the manufacture and sale of cold heading steel wire.
In order to meet customer demand, we strive for consistent quality, short delivery times, and lower prices.

Product Info Parts that use O&K products

Our products are transformed into various parts and used primarily in cars.
They also play a vital role in a wide variety of parts used in construction machinery, robots, and so on.

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