Ota City Industrial Promotion Organization

profiles of companies

profiles of companies

Yazawa Seisakusyo Co., Ltd.

  • Metal machining

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Small diameter part samples Small diameter part samples
The small factory ring The small factory ring
Small diameter part samples
The small factory ring

We manufacture small-diameter metal machined parts using NC automatic lathes, and specialize in machined parts with a diameter of φ10 or smaller. We have been providing customers in various fields with parts utilizing our expertise in small-diameter machining that we have developed over the years since our establishment more than 65 years ago. We are developing new possibilities for small-diameter parts machining by manufacturing not only BtoB products but also BtoC products such as "The small factory ring" and "CEN BUTTON".

Specialized Products, Technologies and Services

Small diameter machining parts

We specialize in machining small-diameter metal machined parts ranging from φ0.1 to φ30 mm as well as manufacturing small parts such as pins with a minimum outer diameter of φ0.1 mm and screws with a minimum outer diameter of S0.6 mm. Our products are used in various fields such as semiconductors, measuring instruments, food manufacturing machinery, and hobby.

The small factory ring

B to C products: We produce unisex fashion rings with M2 threaded mechanism and interchangeable head parts.


Using the precision machining technology developed in the machining of small diameter parts, this metal button has been carefully crafted down to the smallest detail. Usually discarded when clothes have reached the end of their life span, we have created buttons that can be used for years to come by pursuing a sophisticated and universal shape. It is a pioneering metal button that redefines the button.

Current Status of Overseas Business

On-site production
Sales bases (incl. dealerships)
Outsourcing production /processing
Technology partnerships
R&D bases

Key Business Partners

Yamaichi Electronics Co., Ltd., Sayaka Co., Ltd.

Future Target Countries and Regions

Europe, Asia, North America

Overseas Business Prospects

Company Information

Representative Yohei Yazawa
Address 2-24-8 Chuo, Ota-ku, Tokyo 143-0024
URL https://www.yazawa-ss.co.jp
Established in 1954
Capital 33.5 million yen
Employees 15
International Certification (e.g. ISO)


Name Yohei Yazawa
Position Representative Director and President
Tel +81-3-5728-9430
Fax +81-3-5728-9450

Ota City, Tokyo. Home of the excellent 4,200+ manufacturers

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