What NHK Precision does

NHK Spring Precision of America, Inc., operating as NHK Precision, is a Louisville, Kentucky-based Tier-1 automotive component manufacturer founded in 2005 as the North American division of Japan's NHK International and ultimate parent NHK Spring Co., LTD. The company manufactures two core product lines — engine valve springs and automatic transmission (AT) return springs — engineered to reduce weight, optimize fuel efficiency, and survive millions of operating cycles in OEM vehicle programs. Its customer base includes General Motors, BMW, Mercedes-Benz, Nissan, and Honda for North American passenger vehicle production, with a secondary motorsports presence serving NASCAR and IndyCar. The company holds IATF 16949 automotive quality certification and was one of only 25 recipients of General Motors' 2015 Supplier Quality Excellence Award.

The company's competitive position rests on proprietary engineering and testing assets: advanced course-of-life simulation equipment, dynamic analysis test benches that evaluate spring behavior across engine speeds, and direct access to NHK Spring Japan's R&D facility for fatigue, stress, load, and corrosion testing. These capabilities, combined with nearly eight decades of accumulated spring-design data from the Japanese parent, support custom engineering services for OEM-specific specifications. Manufacturing follows a lean production model derived from Japanese kaizen philosophies, with just-in-time delivery to OEM assembly plants.

Revenue is generated through direct B2B hardware sales to automotive OEMs and Tier-1 suppliers via long-term enterprise supply contracts, with quote-based pricing. The company employs 101–250 people at the Louisville headquarters and manufacturing facility, with 100+ positions currently open signaling active capacity expansion. Go-to-market is relationship-driven and supported by industry certifications, awards, and motorsports credibility rather than digital or AI-enabled channels. The company has no disclosed funding rounds, operates as a wholly-owned subsidiary of the Japanese parent group, and shows no signs of public listing or external investment activity.

Name

NHK Precision

Legal name

NHK Spring Precision of America, Inc.

Website

https://nhkprecision.com

Company type

Private

Founded year

2005

Operating status

Operating

Headcount range

101–250 employees

Short description

NHK Spring Precision of America manufactures automotive engine valve springs and automatic transmission return springs at its Louisville, Kentucky facility, supplying Tier-1 OEMs including GM, BMW, Mercedes-Benz, Nissan, and Honda across North America as a division of Japan's NHK Spring Co., LTD.

Ownership category

akta.pro rank

Product category

Automotive Spring Manufacturing

NAICS

Motor Vehicle Transmission and Power Train Parts Manufacturing (33635), Motor Vehicle Gasoline Engine and Engine Parts Manufacturing (336310), Spring Manufacturing (332613)

SIC

Motor Vehicle Parts & Accessories (3714)

akta.pro primary industry

Passenger Vehicle Transmission & Drivetrain Systems Manufacturing (ICE) (IMACAAAG)

akta.pro secondary industry

Fuel & Air Induction Systems Manufacturing (Injectors/Carburetion/Intake) (IMACAHAC)

Keywords

• Automotive spring manufacturing
• Engine valve springs
• Transmission return springs
• Precision metal components
• Tier-1 automotive supplier

Headquarters

HQ city

Louisville

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Technology or R&D, Infrastructure

Revenue model

1. Automotive Spring Sales: Manufactures and sells automotive springs including engine valve springs and AT return springs directly to automotive OEMs and Tier-1 suppliers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

NHK Precision manufactures and sells precision-engineered automotive springs—primarily Engine Valve Springs and Automatic Transmission (AT) Return Springs—to automotive OEMs and Tier-1 suppliers across North America. The company supplies high-performance, low-cost, long-lasting springs for passenger vehicles and racing applications, backed by proprietary testing equipment and custom R&D support from its Japan-based parent, NHK Spring Co., LTD.

Product overview

NHK Precision is an automotive spring manufacturer offering two primary product lines: Engine Valve Springs and AT Return Springs. All automotive springs are engineered to reduce weight, take up less space, and contribute to superior vehicle performance. The company also provides custom R&D capabilities to engineer spring solutions tailored to specific performance specifications.

Differentiator

Problem solved

Functional benefit

Products and services

• Engine Valve Springs Automotive engine valve springs designed to optimize fuel efficiency and engine speed through reduced weight and precise valve compression and return performance; sold to automotive OEMs and Tier-1 suppliers for passenger vehicle manufacturing.
• AT Return Springs Automatic transmission return springs engineered to create seamless shifting in automatic transmissions; sold to automotive OEMs and Tier-1 suppliers for passenger vehicle manufacturing.

Quantifiable outcome

• Springs tested and validated to perform consistently through millions of cycles
• +2 more outcomes

Named customers7 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Three partnerships are on record, tiered core and minor.

• NESCO ResourcescoreChannel Partner/ Reseller/ DistributorStaffing agency partner used by NHK Spring Precision to hire and train candidates for manufacturing positions. Located at 5400 Preston Highway Suite H, Louisville, Kentucky 40213. Contact: Recruiter Chase Skinner at 502.742.5941.
• Kentucky Career CentercoreStrategic or Co-development PartnerPartnership with the manufacturing division of Louisville-area Kentucky Career Center as part of the 'Kentuckiana Works' Program. Director of HR John Gilbert serves on the career center's advisory board. Goal is to provide career counseling, job training, referrals, and professional development resources.
• Kentucky Refugee Ministries (KRM)minorStrategic or Co-development PartnerPartnership to help refugees from political and/or religious persecution successfully complete the naturalization process. KRM provides services including basic necessities, language training, job placement, employment orientation, and immigration documentation support.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Lesjöfors AB: European spring manufacturer with global operations producing industrial and automotive springs, including powertrain and chassis applications. Broader scope than NHK Spring Precision but directly comparable in automotive spring technology.
• Associated Spring / Barnes Group (now Hanchett): Global precision spring and engineered component manufacturer serving automotive, industrial, and aerospace markets. Overlapping product portfolio in automotive springs and broader industrial spring applications.
• NHK Spring Co., Ltd. Ultimate Japanese parent of NHK Spring Precision of America and one of the world's largest automotive spring manufacturers with global operations. Directly comparable in core spring-manufacturing technology and product categories, including valve springs and transmission components.

Direct peers

• Chuo Spring Co., Ltd. Japanese automotive spring manufacturer producing valve springs, suspension springs, and other precision springs for OEMs. Comparable in scale and product portfolio to NHK Spring Precision, with a similar focus on Japanese and global auto OEMs.
• Lee Spring Company: US-based manufacturer of stock and custom mechanical springs for industrial and automotive applications. Comparable as a North American-based precision spring manufacturer with custom-engineering capabilities.
• Peterson Spring: US-based contract spring manufacturer serving automotive, industrial, and other markets with a broad portfolio of compression, torsion, and extension springs. Comparable as a North American-focused spring supplier serving automotive OEM customers.
• Mubea: German-based global automotive supplier specializing in chassis, springs, and powertrain-related components. A direct competitor to NHK Spring Precision in automotive spring technology with similar OEM customer base in North America and Europe.
• Rassini SAB de CV: Mexican-headquartered automotive suspension and chassis components supplier with significant North American operations producing leaf springs, coil springs, and stamped components. Directly comparable as a Tier-1/2 automotive spring supplier serving North American OEMs.

Emerging players

• Smalley Steel Ring Company: US-based manufacturer specializing in retaining rings, wave springs, and specialty compression springs. Adjacent in spring technology but focuses on smaller-diameter specialty springs rather than full-size automotive powertrain springs.
• Hagens Springs Pty Ltd: Specialized spring manufacturer focused on automotive valve springs, transmission springs, and related powertrain components. Comparable product mix with NHK Spring Precision, though smaller scale and geographically focused.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks5 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/147713771913979

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about NHK Precision