OS Seiko - specialized in precision parts for cars, aricraft and IT.


Company Information

Registered Name OS Seiko Co., Ltd.
Registration Office Kanagawa Justice Office, Kanagawa Japan
Established September, 1994
Capital 10,000,000JPY
President & CEO Saburo Okamura
Main Office 3-20-20 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-0206, Japan
  Phone +81-42-759-5566
  Fax +81-42-759-5567
US Office 2100 Beekman Place Apt 3N, Brooklyn, New York 11225 USA
  Phone +1-347-240-8883
  Fax +1-347-240-8883
Email os.seikou@ia4.itkeeper.ne.jp
  • optical fibers
  • metal package for optical module
  • lens holder
  • receptacle connector
  • wafer, bump contact probe, pin
  • ultra precision milling
  • ultra precision small hole drilling
  • jig for CPU package
  • jig for inspection tool
  • connectors for aircraft (hermetic)
  • processed precision parts for cars (metal fittings of glow plugs, metal fittings of airbag)
  • processed precision parts for medial use (allergy inspection, ultrasound inspection)
  • smallest high-brightness LED package (lead frame)
  • glass lens (patent pending)
  • others
Our Clients: Furukawa Electric, Hirose Electric, Ibiden,Kyocera, Ryoden Trading Company,Sharp, Shinko Electric Industries, Toshiba, Toyota Industries, etc.


OS Seiko., Ltd.
3-20-20Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-0206, Japan