Verified Nov 2026
Metal Fabrication
·
Yokohama, Kanagawa
·
Since 1939
NHK Spring Co., Ltd. is a metal fabrication manufacturer headquartered in Yokohama, Kanagawa, Japan. Founded in 1939, it is publicly listed on the Tokyo Stock Exchange and employs between 10,000 and 50,000 people. Its products include automotive suspension springs, seating systems, precision springs, and components for semiconductor process equipment. The company serves the automotive, electric-vehicle, electronics, renewable-energy, and industrial-equipment sectors. In 2026 it announced an additional 5 billion yen investment to expand hard-disk drive suspension production capacity.
NHK Spring Co Ltd (NHK) at a glance
Revenue
5.1B
Employees
10,000-50,000
Founded
1939
Headquarters
Yokohama, Kanagawa
Ownership
Publicly traded (JPX: 5991.T)
Certifications
IATF 16949 · ISO 14001 · ISO 9001
Industries
Automotive
Electric Vehicles
Electronics
Plumbing & Hardware
Renewable Energy
Industrial Equipment
STABILITY SIGNALS
Established & strong
87 years in operation (founded 1939).
Publicly listed; no distress event on record.
Holds IATF 16949, ISO 14001, ISO 9001 certification(s) per public sources.
Overview
NHK Spring Co., Ltd. is a metal fabrication manufacturer headquartered in Yokohama, Kanagawa, Japan. Founded in 1939, it is publicly listed on the Tokyo Stock Exchange and employs between 10,000 and 50,000 people. Its products include automotive suspension springs, seating systems, precision springs, and components for semiconductor process equipment. The company serves the automotive, electric-vehicle, electronics, renewable-energy, and industrial-equipment sectors. In 2026 it announced an additional 5 billion yen investment to expand hard-disk drive suspension production capacity.
At a glance
Attribute | Detail |
|---|---|
Founded | 1939 |
Headquarters | Yokohama, Kanagawa |
Employees | 10,000-50,000 |
Revenue | 5.1B |
Ownership | Publicly traded (JPX: 5991.T) |
Primary capability | Metal Fabrication |
Certifications | IATF 16949 · ISO 14001 · ISO 9001 |
What NHK Spring Co Ltd (NHK) makes
The company holds IATF 16949, ISO 9001, and ISO 14001 certifications and lists machining, powertrain, suspension, interior, seating, semiconductor, steel, and valve products among its offerings.
Products and capabilities described on the company's own site include Machining, Powertrain, Suspension, Interior, Seating, Semiconductor, Steel, Valve (source: nhkspg.co.jp).
Certifications
NHK Spring Co Ltd (NHK) is associated with the following certifications in public sources. Confirm the certified scope for the specific plant producing your part:
IATF 16949 — nhkspg.co.jp
ISO 14001 — nhkspg.co.jp
ISO 9001 — nhkspg.co.jp
Latest developments
2026-09-17 — NHK SPRING to invest additional 5 billion yen to expand HDD suspension production capacity - Kabutan (kabutan.com)
2026-08-06 — [5991.T] NHK Spring Decides on Capacity Expansion Investment to Meet Growing Demand for Semiconductor Process Components (biggo.com)
2026-07-16 — [5991.T] NHK Spring to Build New HDD Suspension Production Facility in Thailand (biggo.com)
2026-05-12 — NHK SPRING hits daily limit up on plans for 29% operating profit increase driven by semiconductor process parts and data center expansion - Kabutan (kabutan.com)
2026-04-23 — 祝贺! NHK Spring PCB新工厂竣工啦～_IC&PCB联盟 (ic-pcb.cn)
2025-12-03 — Macnica and NHK Spring support the consolidation of R&D infrastructure, utilization of AI, and democratization of data - DX Business -Macnica (macnica.co.jp)
Facilities
NHK Spring Co Ltd (NHK) is headquartered in Yokohama, Kanagawa. Public sources also reference these locations:
Canada — nikkei.com
Thailand — biggo.com
Company details
NHK Spring reported an estimated revenue band of 5.1 billion and is listed on the Tokyo Stock Exchange under ticker 5991.T. NHK Spring Co Ltd (NHK) was founded in 1939, has an estimated 10,000-50,000 employees, and is headquartered in Yokohama, Kanagawa. On the LightSource stability read it is rated "Established & strong": 87 years in operation (founded 1939). Publicly listed; no distress event on record. Holds IATF 16949, ISO 14001, ISO 9001 certification(s) per public sources.
Frequently asked questions
What does NHK Spring Co Ltd (NHK) make?
NHK Spring Co., Ltd. is a metal fabrication manufacturer headquartered in Yokohama, Kanagawa, Japan. Founded in 1939, it is publicly listed on the Tokyo Stock Exchange and employs between 10,000 and 50,000 people. Its products include automotive suspension springs, seating systems, precision springs, and components for semiconductor process equipment. The company serves the automotive, electric-vehicle, electronics, renewable-energy, and industrial-equipment sectors. In 2026 it announced an additional 5 billion yen investment to expand hard-disk drive suspension production capacity.
Where is NHK Spring Co Ltd (NHK) headquartered?
NHK Spring Co Ltd (NHK) is headquartered in Yokohama, Kanagawa.
When was NHK Spring Co Ltd (NHK) founded?
NHK Spring Co Ltd (NHK) was founded in 1939.
How big is NHK Spring Co Ltd (NHK)?
NHK Spring Co Ltd (NHK) has an estimated 10,000-50,000 employees, with revenue in the 5.1B range.
Is NHK Spring Co Ltd (NHK) publicly traded?
Publicly traded (JPX: 5991.T). Public financial figures are drawn from its filings.
What certifications does NHK Spring Co Ltd (NHK) hold?
NHK Spring Co Ltd (NHK) lists IATF 16949 · ISO 14001 · ISO 9001 on its website. Confirm the certified scope for the specific plant producing your part.
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Last verified Nov 2026. Is this your company? Request a correction.
Location & contact
Phone
+81 457-86-7511
Certification
IATF 16949 · ISO 14001 · ISO 9001
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