Management Philosophy

    • We are conscious of fasteners are a vital element in mechanical structures.
    • We pursue quality assurance as our most important mission.
    • Believing that profit is a by-product of our customer's trust in our products, each of our employees gives his/her all each day to meet the needs of the fastener industry.

Company Overview

Company Name SDC Tanaka Inc.
Executive Officers Chairman and CEO Koichi TANAKA
Director, General Manager of Production Noriyoshi TSUJI
Director, General Manager of Business Management Tsunenari MURAKAMI
Headquarters 1-10-6, Tedukayamanaka, Sumiyoshi-ku, Osaka, 588-0053 Japan
Tel:+81-6-6672-3701 Fax:+81-6-6672-3753
Tokyo Office 1-21-2-305, Ooi, Shinagawa-ku, Tokyo 140-0014 Japan
Tel:+81-3-3778-3391 Fax:+81-3-3778-3392
South Osaka Operation Center 657-5, Kano, Kanan-cyo, Minamikawachi-gun, Osaka 585-0012 Japan
Tel:+81-721-93-1501 Fax:+81-721-93-7876
Registration ISO 9001 / JIS Q 9001
Founded January 1, 1932
Established December 26, 1988
Capital JPY 100,000,000
Banks MUFG Bank, Ltd. Abenobashinishi branch
The Shoko Chukin Bank Osaka branch
Participating Association Japan Water Works Association
Japan Sewage Works Association
Osaka Prefectural Manufacturing & Industrial Association
Japan Titanium Society
The Japan Society for Heat Treatment
Next-generation Aviation Parts Suppliers Networks (OWO)
Major Line of Business
  • Manufacture and sale of SDC bolt and various types of specialty fasteners
  • Import and sale of plastic protection parts
  • Plasma Surface-Hardening Process(Plasma Carburizing and Plasma (Ion) Nitriding)
  • Sale of SDC fastener performance testing machine
  • SDC Plasma Surface Hardening Process Equipment
  • SDC Fastener Performance Testing Machine
  • Full-Digital Servohydraulic Testing System(Fatigue tester)
  • Digital Microscope
  • Laser Microscope
  • Rockwell Hardness Tester
  • Universal Tester (Automatic Recorder-type)
  • Axial Force Meter, Projector
  • Micro Vickers Hardness Tester
  • Dielectric Breakdown Voltage
  • DOS Tester (Stainless Steel Sensitivity Measurer)
  • High-Speed Screw Loosening Measurement Tester(NAS3350 Standard)
  • Bolt and Nut Effective Diameter Measurer
  • Gage for Various Screws, Measuring Instruments, etc.