Tokyo South Factory
The Minami Plant, located just a 10-minute walk from our headquarters, serves as a core facility supporting mass production in the aviation sector. In 2025, it obtained Nadcap heat treatment accreditation, establishing an integrated system in compliance with international standards together with our headquarters. By responding to the growing demand for aircraft-related heat treatment in Japan, we are committed to delivering products that meet stringent requirements with stable supply capacity and reliable quality.
What Tamayakin can do
Tokyo South Factory
The Minami Plant, located just a 10-minute walk from our headquarters, serves as a core facility supporting mass production in the aviation sector. In 2025, it obtained Nadcap heat treatment accreditation, establishing an integrated system in compliance with international standards together with our headquarters. By responding to the growing demand for aircraft-related heat treatment in Japan, we are committed to delivering products that meet stringent requirements with stable supply capacity and reliable quality.
Heat treatment of aerospace components
Aircraft components are required to meet strict standards and to be supplied stably over the long term. At the Minami Plant, standardized process management and a flexible production system with multiple heat treatment furnaces ensure consistent quality even at mass-production scale. We have established a system that reliably delivers components in line with our customers’ production schedules.
Heat Treatment at Tama Metallurgy
Furnace
Gas Carburizing and Quenching
— AMS2759/7
Atmosphere Quenching and Tempering
— AMS2759/1
Gas Nitriding — AMS2759/6
Gas Soft Nitriding
Sulfonitriding
Features of Tokyo South Factory
Non-stop from machining
Machining and tool design and manufacturing will be implemented. We will propose the establishment of a supply chain for integrated production of parts and process improvement.
Capable of Mass Production
We specialize in mass production for aircraft and can ensure a stable supply. We meet the demand for heat treatment of aircraft components in Japan.
Nadcap Accredited in 2025
Our Minami Plant obtained Nadcap heat treatment accreditation in 2025. Under a strict management system based on international standards, we continue to earn our customers’ trust by providing stable quality and reliable supply.Tokyo South Factory
Address 3-23-1 Inadaira, Musashimurayama-shi, Tokyo 208-0023 TEL: 042-560-4331 Fax: 042-560-4550
If coming by train
15 minutes by bus from Akishima Station on the JR Oume Line
Bus (Sho 22) IHI (via Estate Tachikawa)｜8 min. walk from Inadaira-minami intersection
Bus (Sho 26) Harunadairazuka (via Estate Tachikawa)｜8 minute walk from Inadaira-minami intersection
Bus (Sho 24) bound for Hakonegasaki Station East Exit｜8 minutes walk from Inadaira-minami Intersection bus stop
Bus (Sho23) bound for AEON MALL: 8 minutes walk from Inadaira-minami Intersection bus stop.
All of the above buses can be boarded at the Seibu Haijima Line and Seibu Tachikawa Station entrance. *When taking the bus from Seibu Tachikawa Station, the bus does not stop in front of the station.
To get to the bus stop, walk along the railway line in the direction of Shinjuku for about 3 minutes.
If you are coming to the office by car
1.5 km from Tennobashi intersection on Itsukaichi Kaido Road
650m from Matsunaka Danchi Minami intersection on Itsukaichi Kaido
4.9 km from JR Akishima Station
4.8 km from Seibu Haijima Station
2.5 km from Seibu-Tachikawa Station on the Seibu Line
2.2 km from Musashi Sunagawa Station on Seibu Line
10.4 km from Hachioji Interchange on Chuo Expressway via Haijima Bridge and Akishima
13.0 km from Iruma Interchange on Ken-O Expressway via Route 16 and Shin-Ome Kaido
