| Founding | 1924 |
| Establishment | February 1953 |
| Representative | Seiichi Yamaguchi, President - CEO |
| Capital | 55.5 million yen |
| Business details | Precision cold-forged parts: |
| Automotive-related parts account for 80% of sales. | |
| Available thread sizes: M1.7–M10 (Saitama), M3–M6 (Philippines) | |
| Main bank: | Mizuho Bank, Honjo Branch |
Domestic bases
| main office: | 4-31-7 Ishihara, Sumida-ku, Tokyo 130-0011 → Transportation Information |
| E-mail: info@ynut.co.jp | |
| Site: 495㎡ | |
| Building: 990㎡ |
| Saitama Factory: | 1510-1 Takayanagi, Kuki City, Saitama Prefecture 349-1125 |
| Phone number: +81-480-52-6791 | |
| E-mail: info@ynut.co.jp | |
| Number of employees: 45 (as of February 2025) (including 30 full-time employees) | |
| Average age: 41 years old | |
| Site area: 7,857 m² (as of June 2024) | |
| Building area: 3,821 m² (as of June 2024) | |
| Acquired international standards | ISO 9001:2015 |
| ISO 14001:2015 |
Overseas bases
| Philippine factory: | Yamaguchi Nut Philippines Corporation (YNPC) |
| Address: Unit 2-A, Block 1 Lot 2, Phase Ⅲ First Cavite Industrial Estate,Brgy. Langkaan Dasmarinas, Cavite,Philippines 4126 |
|
| TEL: +63-46-413-1990 | |
| E-mail: info@ynut.co.jp | |
| Number of employees: 10 (as of July 2026) | |
| Average age: 27 | |
| Site area: 961 m² (as of February 2019) | |
| Building area: 726 m² (as of February 2019) |
