About us

General Information

Started: February 1939
Founded: June 1952
Capital: J.\54,000,000.-
Representative: Yoshio Hachiuma, President
Number of Employees: 113
Business Items: Cutting Tools (Bent Shank Taps, Nut Taps, Forming Taps, Spiral Taps, Pipe Thread Taps, and Taps for Special Purposes)

Customers: Domestic and overseas nut manufacturers and pipe fitting manufacturers
Our Banks: Resona Bank, Ltd., Bank of Tokyo-Mitsubishi UFJ, Ltd., and Sumitomo Mitsui Banking Corporation
Main Business Office:
3-2-10 Tsumori, Nishinari-Ku, Osaka 557-0062, Japan
Tel: +81-6-6659-1151 (Rep) +81-6-6659-1162 (Exp)
Fax: +81-6-6657-3725
Nagoya Office:
2-4-69 Taihou, Atsuta-ku, Nagoya-shi, Aichi-Pref. 456-0062, Japan
GIMUCO Building A, Room 1
Tel: +81-52-842-2631
Fax: +81-52-842-2671
907-90 Sogai, Naka-Ku, Taka-Cho, Taka-Gun, Hyogo Pref., 679-1131 Japan
Tel: +81-52-842-2631
Fax: +81-52-842-2671

Message from the President

Welcome, and thank you for visiting our homepage!

Our company, founded in 1939, specializes in manufacturing taps used in the production of internal threads. To meet the manifold needs of our customers and to solve various problems related to tapping, we have been making steady technological improvements to achieve, high productivity and quick delivery despite the short production runs for a variety of tap sizes.

In November 1999. our quality management system was assessed and found to be in compliance with the requirements of International Quality Management Standards ISO9001. Our sales, technical, and production divisions work as a team to provide our customers with the best possible taps to ensure that they are satisfied with the quality, price. and delivery of taps.

Twenty-First Century: The Japanese economy is facing a crisis that has been compounded by the downturn in the world economy, but we are confident that through wisdom and untiring efforts, we will overcome today's challenges. In addition, structural reforms of industries in fields such as information, energy, environment, and welfare will be carried out, and as a result, the twenty-first century shall be the age of happiness and prosperity on earth for all human beings.

With our eyes fixed on the present and the future of technological progress, we will devote ourselves to developing and improving our original technology to ensure that you are completely satisfied with our taps.

We hope you will continue to support and patronize us in the future.

Our history

Our company's history is also a history of relentless technological development.
  • February 1939:

    Started in Amagasaki City, Japan, as precision-machining division of Sakai Iron Works Co., Ltd.

  • June 1945:

    Shifted to 411-1, Sogai, Naka-Cho, Taka-Kun, Hyogo-Pref., due to World War II

  • June 1952:

    Separated and incorporated as Sakai Threading Tool Co., Ltd., with capital of \500,000.- (presently \54,000,000.-)

  • June 1955:

    Received permission to display the JIS mark on regular hand tap

  • August 1962:

    Invented bent shank tap of high-speed steel with #600 (guide thread at chamfer portion)

  • May 1967:

    Invented coupler-type AH bent shank taps (Tap nib and bent shank are mechanically connected by coupler.)

  • November 1971:

    Built new factory at 907-90, Sogai, Naka-Cho, Taka-Gun, Hyogo-Pref. (our current location)

  • June 1974:

    Received permission to display the JIS 2 class mark on nut taps with metric-sized coarse screw threads

  • August 1974:

    Opened main business office at 3-2-10 Tsumori, Nishinari-Ku, Osaka (our current location, main business office)

  • March 1982:

    Invented TiN-coated taps

  • November 1986:

    Invented lead guide taps, which can prevent reamer action and facilitate high accuracy of nut threads

  • September 1988:

    Invented modified tandem taps, which can produce precise threads for thin nuts

  • December 1994:

    Invented fluteless taps (forming taps)

  • February 1997:

    Opened Nagoya office (current office)

  • November 1999:

    Acquired ISO 9001 Certification

  • November 2001:

    Received permission to manufacture the medical tool.

  • August 2002:

    Dissolved the capital relationship with Sakai Iron Works Co.,Ltd.

  • April 2006:

    Atsuo Hachiuma (ex-President) received Yellow Ribbon Medal

  • December 2009:

    Acquired ISO 9001 2008 certification

  • July 2014:

    Completion of the Fourth Phase Factory Expansion Construction

  • November 2017:

    Completion of the Fifth Phase Factory Expansion Construction

  • January 2018:

    Acquired ISO 13485 Certification (JQA-MD0116)

  • February 2022:

    Completion of the Sixth Phase Factory Expansion Construction

The Taka factory in the evacuation site
Copying lathe made by Mitsubishi Heavy Industries
Automatic lathe of Petermann type made by Shimamoto Iron Works
Upper: AH (cap-type) bent shank tap, Lower: conventional bent shank tap
First Factory and the Old Office Building (Completed in November 1971)
At the Medal with Yellow Ribbon Award Ceremony, President (now Chairman) Atsuo Hachiuma and his wife Junko.


Main Business Office

3-2-10, Tsumori, Nishinari-Ku, Osaka 557-0062, Japan
Tel: +81-6-6659-1151(Rep) 06-6659-1162(Exp)
Fax: +81-6-6657-3725

Nagoya Office

2-4-69 Taihou, Atsuta-ku, Nagoya-shi, Aichi-Pref. 456-0062, Japan
GIMUCO Building A, Room 1
Tel: +81-52-842-2631
Fax: +81-52-842-2671


907-90 Sogai Naka-Ku, Taka-Cho, Taka-Gun,Hyogo Pref. 679-1131, Japan
Tel: +81-795-32-2251
Fax: +81-795-32-3948