What Brunk Industries, Inc. does

Brunk Industries, Inc. is a privately held, family-owned US contract manufacturer founded in 1960 in Lake Geneva, Wisconsin by Swedish immigrants Bertil and Ulla Brunk. The company specializes in micro-precision light gauge metal stampings, sub-assemblies, and class-critical devices, with operations spanning in-house tool and die design, progressive stamping (Bruderer, Minster, servo, 30-ton and 800-ton presses), CNC multi-axis and Swiss machining, laser welding (fiber, pulsed Nd:YAG, diode), wire/conventional EDM, waterjet/laser cutting, automated assembly, and surface finishing (electroplating, passivation, electro-polishing, Teflon coating). The technical stack is supported by FEA-driven die simulation in SolidWorks/AutoCAD, in-house automation cells with PLC and machine-vision integration, and an IQS enterprise quality system backed by 4 quality labs and 10+ OGP/CMM systems.

The business sells exclusively on a B2B contract-manufacturing model: every engagement begins as an RFQ to the direct sales team (David Bachelier for North America/Asia; Optima International AB in Uppsala for Europe since 2005), is governed by Brunk's published Customer Terms and Conditions, and is delivered as project-based, multi-year production under stamped POs. Brunk serves six end markets — Medical Devices, High Tech (semiconductor, AR/VR, AI hardware, clean energy), Aerospace, Defense, Industrial, and Recreational (marine, ATV, motorcycle, bicycle) — with medical and high-tech as the two primary verticals. Notable customers are described as "world-leading" OEMs in CPUs, medical devices, firearms, and consumer electronics/AR-VR; over 1 billion medical-device components and well over half a billion total components have been shipped to date.

The company employs roughly 300 people across its 80,000 sq ft headquarters and 60,000 sq ft Plant Two in Lake Geneva, plus Brunk Technology Centers in Pittsburgh (die design, rapid prototyping) and Steamboat Springs (additive manufacturing, mechanical design, automation). It operates multi-shift production, holds ISO 9001:2015 and ISO 13485:2016 certifications (originally ISO 13485 in 2013), and is led by second-generation President/CEO Lars Brunk alongside third-generation family directors Lars-Erik Brunk and Hans Brunk. Pricing is quote-based and not publicly disclosed; revenue is not reported, and the company has no external institutional funding.

Name

Brunk Industries, Inc.

Legal name

Brunk Industries, Inc.

Website

https://brunk.com

Company type

Private

Founded year

1960

Operating status

Operating

Headcount range

101–250 employees

Short description

Brunk Industries is a US-based, family-owned precision metal stamping and contract manufacturer serving medical device, semiconductor, aerospace, defense, and consumer electronics OEMs with micro-precision components and class-critical assemblies. Founded 1960, ~300 employees, ISO 13485 certified.

Ownership category

akta.pro rank

Headquarters

HQ city

Lake Geneva

HQ country

United States

HQ region

North America

Offices5 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Contract manufacturing of precision metal stampings and assemblies: Primary revenue stream: contract manufacturing of low-to-high volume micro-precision light gauge metal stampings, sub-assemblies and class-critical devices, plus full service component assembly, EDM, laser processing, rapid prototyping, and finishing. Customers accept quotations subject to Brunk's terms and conditions; long-running OEM relationships with Fortune 500 companies.
2. Rapid prototyping and design-for-manufacturing services: Engineering/design services including DFM/DFMA reviews, FEA, CAD reviews, machined prototypes, 3D printed metal evaluations, and PPAP support. Charged as project-based work that often leads into production contracts.
3. Custom tooling/die sales and refurbishment: Sale and lifecycle support of custom metal stamping dies, progressive die sets, carbide dies, fixtures, gauges and EOAT, plus refurbishment, preventive maintenance, and replacement components.
4. Customer and supplier terms-based transactions: Every customer quotation and supplier purchase order issued under Brunk's published Customer Terms and Conditions / Purchase Order Terms and Conditions, indicating standard contractual project-and-PO-based revenue.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels10 records

Core offering

Brunk Industries is a full-service contract manufacturer of micro-precision light gauge metal stampings, sub-assemblies, and class-critical devices for OEM customers. The company runs an integrated offering that spans in-house design, custom tooling, progressive die stamping, CNC machining, laser welding, automated assembly, surface finishing, and metrology, with full quality systems certified to ISO 9001:2015 and ISO 13485:2016. Production is concentrated at its Lake Geneva, Wisconsin campus, with technology centers in Pittsburgh and Steamboat Springs and European sales support via Optima International AB in Uppsala, Sweden.

Differentiator

Problem solved

Functional benefit

Products and services

• Precision Metal Stamping Contract micro-precision light gauge metal stamping services for OEMs in medical, high-tech, aerospace, defense, industrial and recreational markets, including blanking, piercing, coining, embossing, bending, progressive stamping dies, and high-speed stamping on Bruderer and Minster presses, with servo press, 30-ton and 800-ton press capacity.
• Design / Design for Manufacturing (DFM) Services Integrated tool design process and DFM/DFMA services using SolidWorks, AutoCAD, and FEA to validate manufacturability, predict stress and springback, and support rapid transition from prototype to production for OEM customers.
• Custom Tooling and Die Making In-house tool and die making with nearly 60 journeyman toolmakers producing custom metal stamping dies, progressive dies, carbide dies, fixtures, jigs, gauges, and EOAT, supported by wire EDM, surface grinding, precision fitting, and tool simulation.
• Laser Welding Services Precision laser welding for medical devices and high-tech assemblies using fiber, pulsed Nd:YAG and diode lasers, supporting conduction and keyhole modes, hermetic seams for implantables, and validated processes per ISO 13485 with ISO 14971 risk management and FDA 21 CFR Part 820 alignment.
• Assembly and Automation Services In-house design and build of automated assembly machines and customized workstations for medical devices and other complex assemblies, integrating robotics, PLCs, machine vision, and MES for validated production cells.
• CNC Machining Services State-of-the-art CNC multi-axis machining capabilities including Swiss machining and Laser Swiss, CNC turning, wire and conventional EDM, water jet cutting, laser cutting, and laser marking for OEM customers.
• Surface Finishing Services In-house and certified-subcontractor surface finishing services including deburring, bead blasting, plating (rack, barrel, reel-to-reel, selective, spot), passivating, laser marking, heat-treating, Teflon coating, powder coating, electro-polishing, and continuous plating of preformed plates.
• Rapid Prototyping Services Rapid prototyping services leveraging additive manufacturing, CNC machining, and rapid sheetmetal to support medical device and high-tech product development from concept to production-ready design, including DFM/DFMA reviews, FEA, CAD reviews, machined prototypes, 3D printed metal evaluations, and PPAP support.
• Quality and Metrology Services Comprehensive quality systems with 4 quality labs, 3 CMMs, 4 OGP Flash 500s, 4 OGP 302s, 1 OGP Quest 450, 2 OGP 250s, SPC and IQS enterprise quality management software, supporting ISO 9001:2015 and ISO 13485:2016 certified programs for OEM customers.

Quantifiable outcome

• Over 1 billion components shipped for medical device OEMs
• +5 more outcomes

Named customers6 records

Segments6 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Six partnerships are on record, tiered strategic — sole european sales/development channel, minor — industry association membership, minor — certification/standards body, minor — referenced professional services/auditor, core — major defense vertical customer base and core — recurring recreational vertical customers.

• Optima International ABstrategic — sole european sales/development channelChannel Partner/ Reseller/ Distributor · 1 January 2005Brunk has teamed with Optima International in Uppsala, Sweden since 2005. Optima provides local sales and development support to Brunk's European customers and facilitates communications with engineers at Brunk's Lake Geneva, Wisconsin headquarters. Contact: Jens Pettersson, [email protected], +46 (0)18 183 020. Office: Gunstagatan 16, SE-753 24 Uppsala, Sweden.
• Precision Metalforming Association (PMA)minor — industry association membershipGTM or Marketing PartnerBrunk's logo is displayed alongside the Precision Metalforming Association logo in the homepage footer with a link to pma.org, indicating PMA membership and association-driven marketing/networking/standards participation.
• TÜVminor — certification/standards bodyImplementation/ SI/ Consulting PartnerTÜV logo displayed on Brunk's homepage with link to tuv.com, indicating TÜV's role as a third-party testing/certification partner supporting Brunk's ISO 9001 and ISO 13485 quality certifications and other compliance programs.
• EY (Ernst & Young)minor — referenced professional services/auditorImplementation/ SI/ Consulting PartnerEY logo displayed on Brunk's homepage with link to ey.com, suggesting a professional services/advisory relationship (e.g., audit or consulting) rather than a customer or channel partnership.
• Industry-leading firearm OEMscore — major defense vertical customer baseOEM/ Whitelabel/ Licensing PartnerBrunk supplies stamped components and sub-assemblies to industry-leading firearm OEMs for firearms and weapons systems, including Action Bars, Triggers, Latches, Ejector Slides, Safety Latches, Sights, Slide Stops and Magazines. Parts are produced with combined precision stamping, laser welding, and fully integrated automated sub-assemblies.
• Leading motorcycle, bicycle, ATV/MUV and marine OEMscore — recurring recreational vertical customersOEM/ Whitelabel/ Licensing PartnerSome of the world's leading OEMs in motorcycle and bicycle industries rely on Brunk for repeatable world-class stamped and machined components used in electronics, drivetrain and transmission assemblies; Brunk has supplied critical-to-function components (Starter/Alternator laminations, contacts, fuel delivery components) to the Marine industry for 40+ years.

Scale indicators9 records

Recent moves10 records

Expansion highlights6 records

Direct peers

• NN, Inc. NN, Inc. is a precision engineered components manufacturer serving medical, automotive, aerospace, and industrial markets with metal and plastic precision components. Comparable to Brunk on multi-vertical precision component manufacturing for regulated end markets, with similar customer profile and process technologies.
• Donatelle: Donatelle is a medical device and industrial contract manufacturer offering precision molding, machining, stamping, and assembly for regulated applications. Directly comparable to Brunk's medical device vertical — micro-precision components and assemblies for regulated, mission-critical OEM programs.
• Tegra Medical: Tegra Medical is a precision contract manufacturer focused exclusively on medical and surgical devices, offering micro-machining, injection molding, and assembly for implants and instruments. Closely comparable to Brunk's medical device vertical — precision components for class-critical implantable and surgical applications under ISO 13485.
• Flexan: Flexan is a custom precision contract manufacturer specializing in medical device components, with capabilities in molding, stamping, and assembly of silicone, rubber, and metal parts. Comparable to Brunk as a medical-focused precision contract manufacturer serving OEMs with class-critical, ISO 13485-certified components.
• Mack Molding (Mack Group): Mack Molding is a precision contract manufacturer providing plastic and metal molding, machining, stamping, and assembly for medical, industrial, and defense customers. Comparable to Brunk on multi-vertical precision contract manufacturing, including medical device assembly and tool/die capabilities.
• Paramit Corporation: Paramit is a precision contract manufacturer of medical devices, life sciences instruments, and industrial products with vertically integrated design, tooling, micro-precision machining, and cleanroom assembly. Directly comparable to Brunk on micro-precision components for medical and high-tech OEMs and a similar full-service, ISO 13485-certified business model.
• Cirtec Medical: Cirtec Medical is a contract manufacturer of medical devices and components, with capabilities spanning precision machining, micro-molding, laser processing, and finished device assembly. Highly comparable to Brunk's medical device business — micro-precision components, laser welding, and assembly for active implants and surgical devices.
• MW Industries: MW Industries is a precision engineered components manufacturer of custom springs, stampings, and assemblies for medical, aerospace, defense, and industrial customers. Comparable to Brunk as a multi-vertical precision metal components and assemblies manufacturer with regulated customer base.

Broad incumbents

• Jabil: Jabil is a large, publicly traded global manufacturing solutions provider serving healthcare, high-tech, aerospace, and defense customers with capabilities spanning precision machining, sheet metal, and automated assembly. Comparable to Brunk on high-tech and medical device contract manufacturing, but at significantly greater scale and scope.
• Plexus Corp: Plexus is a larger, publicly traded global EMS provider with deep life sciences and medical device contract manufacturing capabilities, including precision assembly and supply chain services. Comparable as a medical-device-focused contract manufacturer, though Plexus is materially larger and broader in scope than Brunk's precision stamping-led offering.

Market position

Strengths6 records

Weaknesses6 records

Competitive moat6 records

Key risks7 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/watch?v=N1N_2uUZZSs
• Facebookfacebook.com/BrunkIndustries
• LinkedInlinkedin.com/company/brunk-industries

Compliance8 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Subsidiaries1 record

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 Brunk Industries, Inc.