Aoyama Seisakusho

We provide solutions
that connect the world.

"A bolt is not 'just a bolt'."
Though the bolt is a small,
seemingly insignificant part,
it serves a vital role.

Aoyama's "Fastening Engineering":
Encompassing the ability to propose new,
unique and appealing products.

We provide the world's finest…
Products that satisfy the highest levels of function,
performance, and quality.

By fulfilling our social responsibilities,
we aim to be a reliable company
that is continuously trusted by society.

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Product

Aoyama Seisakusho is developing core fastener technologies to create new value for our customers.

Aoyama Seisakusho is
developing core fastener technologies to
create new value for our customers.

Our products, which are borne of Aoyama's unique ideas and technologies, are used in every area of the vehicle. We are realizing solutions for our customers, anticipating their needs and improving vehicle quality.This is Aoyama Seisakusho's Value-added Manufacturing.

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News
  • 3 October, 2025 Groundbreaking Ceremony Held for First Production Plant in India
  • 16 September, 2025 Received the Excellence Award for Supplier Quality Improvement Activities from Toyota Motor Corporation
  • 1 September, 2025 Received the Achieving Quality Level Award from Isuzu Motors., Ltd.
  • 15 July, 2025 Received Sustainability Award from TS TECH Co., Ltd.
  • 24 June, 2025 Received Quality Excellence Award from Toyota Motor Hokkaido,inc.
  • 10 June, 2025 First delivery of components for the H3 Launch Vehicle
  • 11 March, 2025 Received Toyota Quality Control Award: Excellence Award from Toyota Motor Corporation
  • 21 February, 2025 AOYAMA THAI Celebrates 60th Anniversary Event
  • 5 June, 2024 Server Maintenance -24 June, 2024 (Mon.) 8:00 PM to 25 June, 2024 (Sun.) 1:00 AM- (JST)
  • 11 May, 2023 Received the Five-Year Continuous Excellent Quality Award from Toyota Motor Corporation's Miyoshi and Akechi Plants
  • 23 December, 2022 30th Anniversary of Kumamoto Plant establishment
  • 5 December, 2022 We have been registered in the Aichi Prefecture SDGs Registration System.
  • 27 November, 2022 Received a Certificate of Appreciation for the 150th Anniversary of Aichi Prefecture
  • 15 July, 2022 Received the Aichi labor director award to an excellent business establishment, which affects safety and health
  • 16 May, 2022 Received the certificate of commendation for zero delivery defects and delays from Toyota Industries Corporation
  • 21 April, 2022 We recognized as "Excellent Health Management Corporation" and "Aichi Health Management Net".
  • 21 April, 2022 Received the VA Promotion Excellence Award from Toyota Motor Corporation.
  • 28　January, 2022 Sanyo Plating Industry Co., Ltd. became our group company
  • 11 January, 2022 Received a Letter of Application from Toyota Motor Corporation for Achieving Fourth Consecutive Le Mans Victory
  • 7 Janurary, 2022 Received the Excellent Workplace Award from Daihatsu Motor Co., Ltd.
  • 6 January, 2022 Announcement of the Release of the "We Can" Advertising Video
  • 13 December, 2021 Opening Ceremony Held for Seki Plant
  • 1 November, 2021 Established Kariya Office
  • 3 September, 2021 Solar Car Race Suzuka" THE BLUE STARS Team Wins in the Dream Class
  • 3 September, 2021 Unveiling of Seki Plant Held
  • 1 June, 2021 We have renewed our corporate website
  • 12 May, 2021 Received a Letter of Appreciation from Toyota L&F Company of Toyota Industries Corporation
  • 28 Apr, 2021 Recognized as Health and Productivity Management 2021 (White 500)
  • 13 Apr, 2021 Received the Excellence Appreciation Awards in Quality department from Honda Motor Co., Ltd.
  • 13 Apr, 2021 Received the Quality Management Excellence Award from Hino Motors., Ltd.
  • 17 Feb, 2021 Recognized as Aichi Quality Companies in 2020
  • 11 Jan, 2021 50th Anniversary of the Establishment of the Ena Plant
  • 3 November, 2020 We celebrated our 70th year in business
  • 16 Dec, 2020 Received the Memorial Tree from ASPECT
  • 2 Nov, 2020 Greeting of Seki Plant completion
  • 10 Oct, 2020 Received the Overseas Support Award from Aisin AW Co., Ltd.
  • 7 July, 2020 Received the Domestic Contribution Award from Daihatsu Motor Co., Ltd.
  • 20 Mar, 2020 Received the Quality Management Excellence Award from Hino Motors., Ltd.
  • 9 Mar, 2020 Received the Toyota Quality Control Award: Excellence Award from Toyota Motor Corporation
  • 12 Nov, 2019 Held ASPECT Workshop (Watching Super Formula)in 2019
  • 13 Sep, 2019 Repose of souls Ceremony at Seki Plant
  • 27 May, 2019 Received the Certificate from Toyota L&F Company of Toyota Industries Corporation
  • 22 May, 2019 Ibaraki Plant received the Production Correspondence Award from Hitachi Automotive Systems, Ltd.
  • 22 May, 2019 Received the Achieving Quality Level Award from Isuzu Motors., Ltd.
  • 14 May, 2019 Received the Environment Award from JETECT CORPORATION
  • 6 May, 2019 Received the Quality Excellence Award from Toyota Motor Corporation
  • 3 Apr, 2019 Received the Continuous Quality Improvement Award from Toyota Motor East Japan, Inc.
  • 28 Mar, 2019 Received from Toyota Motor East Japan, Inc.
  • 28 Mar, 2019 Received the Excellence Award for Supplier Quality Improvement Activities from Toyota Motor Corporation
  • 28 Mar, 2019 Received the Quality Excellence Award from Sanpuku Co., Ltd.
  • 28 Mar, 2019 Received the Quality Management Excellence Award from Hino Motors., Ltd
  • 11 Mar, 2019 Honda Motor Co., Ltd Held Ceremony of Excellence Appreciation Awards in Aoyama
  • 11 Mar, 2019 Receive the Quality Excellence Award from Toyota Motor Corporation
  • 25 Feb, 2019 Received the Toyota Quality Control Award: Excellence Award, the VA Promotion Excellence Award, and the Cost Improvement Award from Toyota Motor Corporation