| Founded | 1924 |
| Incorporated | February 1953 |
| President | Seiichi Yamaguchi, Representative Director and President |
| Capital | JPY 55.5 million |
| Business | Precision cold-headed parts (automotive components: 80% of sales) |
| Special cold-headed screws and fasteners | |
| Thread sizes M1.7 – M10 (Saitama Plant) M3 – M6 (Philippines Plant) |
|
| Bank | Mizuho Bank, Honjo Branch |
Locations in Japan
| Head Office | 4-31-7 Ishiwara, Sumida-ku, Tokyo 130-0011, Japan → Access map |
| Tel: +81-3-3622-4136 | |
| Fax: +81-3-3625-4865 | |
| Site area: 495 m² | |
| Floor area: 990 m² |
| Saitama Plant | 1510-1 Takayanagi, Kuki-shi, Saitama 349-1125, Japan |
| Tel: +81-480-52-6791 | |
| Fax: +81-480-52-6004 | |
| Employees: 45 (as of February 2025; 30 regular employees) | |
| Average age: 41 | |
| Site area: 7,857 m² (as of June 2024) | |
| Floor area: 3,821 m² (as of June 2024) | |
| Certifications | ISO 9001:2015 |
| ISO 14001:2015 |
Overseas Location
| Philippines Plant | Yamaguchi Nut Philippines Corporation (YNPC) |
| Unit 2-A, Block 1 Lot 2, Phase III, First Cavite Industrial Estate, Brgy. Langkaan, Dasmariñas, Cavite 4126, Philippines |
|
| Tel: +63-46-413-1990 | |
| Fax: +63-46-413-1990 | |
| Employees: 10 (as of July 2026) | |
| Average age: 27 | |
| Site area: 962 m² (as of February 2019) | |
| Floor area: 726 m² (as of February 2019) |
