GMI

What GMI does

GMI Corporation is a US-based, employee-owned contract manufacturer specializing in high-precision CNC machining for regulated end-markets. Founded in 1990 as Greenwood Machine, Inc. and rebranded in 2013, the company operates a 69,000 sq. ft. ISO 13485-certified, FDA-registered, and ITAR-registered facility in Franklin, Indiana, running 24 hours a day, six days a week on more than 40 Swiss-style and Mazak multi-axis lathes. It produces tight-tolerance components (to ±0.0002 inches) in diameters from 0.010 to 2 inches for medical device OEMs, RF connector manufacturers, and aerospace/defense contractors, with additional capability in optical, semiconductor, and industrial applications. Beyond machining, GMI offers assembly and subassembly, kitting, packaging, labeling, sterilization management, and full program management, supported by an in-house metrology lab, FMEA/IQ/OQ/PQ validation protocols, and a controlled environment room convertible to Class 8 cleanroom. Its core technology differentiator is the ability to complete complex multi-operation parts in a single setup using Swiss-style and multi-spindle lathe platforms.

The company serves enterprise customers on long-term, project-based engagements, including Hologic (breast biopsy drivetrains), Samtec (RF connectors, 20+ years), Precision Connector Inc. (largest RF customer), NICO Corporation (neurosurgery drivetrains), and 316 Product Development (medical components, 15+ years). Revenue is generated through custom quote-based contract manufacturing with no public pricing; the go-to-market is direct enterprise field sales led by a National Sales and Marketing Director, supported by case studies, video content, blog posts, and quote request forms on gmicorp.com. Following founder Fred McWilliams's 2020 retirement, GMI transitioned to a 100% ESOP structure and continues to operate as a privately held, founderless, employee-owned business with no external private equity or venture capital ownership and no disclosed revenue or funding history.

Name

GMI

Legal name

GMI Corporation

Website

https://gmicorp.com

Company type

Private

Founded year

1990

Operating status

Operating

Headcount range

101–250 employees

Short description

GMI Corporation is an employee-owned US contract manufacturer that produces high-precision (±0.0002 in) CNC Swiss and multi-axis machined components and assemblies for medical device OEMs, RF connector manufacturers, and aerospace/defense customers from its ISO 13485-certified Franklin, Indiana facility.

Ownership category

akta.pro rank

Product category

Precision CNC Machining and Contract Manufacturing

NAICS

Machine Shops (33271)

SIC

Screw Machine Products (3451)

akta.pro primary industry

GMP Manufacturing Support Services (QA/QMS, validation, documentation) (HLAAAKAH)

akta.pro secondary industry

GMP Quality, Validation & Regulatory Support (GMP/CSV/Qualification) (HLAGAGAL)

Keywords

• Precision CNC machining
• Contract manufacturing services
• Medical device components
• RF connector machining
• Aerospace defense manufacturing

Headquarters

HQ city

Franklin

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Contract Manufacturing Services: Full-service high precision production machining contract manufacturing. Services include product development, engineering services, CNC machining, value added assembly, packaging and complete logistic services. Revenue is generated through manufacturing services for medical devices and precision components.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels7 records

Core offering

GMI Corporation is a full-service high-precision CNC machining contract manufacturer that designs, machines, and assembles tight-tolerance electromechanical components and devices. The company serves medical device OEMs, RF connector manufacturers, and aerospace/defense contractors with Swiss-style and multi-axis lathe machining (tolerances to ±0.0002 inches), assembly/subassembly, kitting, packaging, labeling, metrology, and full program management from a 69,000 sq. ft. ISO 13485-certified GMP facility.

Product overview

GMI Corporation is a full-service high precision production machining contract manufacturer offering comprehensive precision CNC machining services. Its core product portfolio spans Swiss-style precision CNC turning (with over 40 Swiss turn-style lathes and Mazak multi-axis lathes) and multi-axis, multi-spindle lathe machining for complex parts. These core precision machining capabilities are extended through assembly and subassembly services, metrology and quality control (IQ/OQ/PQ), a controlled environment room (convertible to Class 8 cleanroom), and kitting, packaging, and labeling services. The company serves demanding industry segments including Medical Device machining (FDA registered, ISO 13485 certified), RF Connector machining, and Aerospace and Defense (ITAR compliant), delivering tight-tolerance components with diameters from 0.010 to 2 inches and tolerances as tight as ±0.0002 inches.

Differentiator

Problem solved

Functional benefit

Products and services

• Swiss-Style Precision CNC Machining Precision Swiss-style CNC turning service for high-volume, complex parts with diameters from 0.010 to 2 inches and tolerances as tight as ±0.0002 inches (0.0001 inches for certain applications). Supports turning, boring, drilling, milling, slotting, threading, and tapping operations for medical device, RF connector, aerospace, and defense customers.
• Multi-Axis, Multi-Spindle Lathe Machining High-volume manufacturing using Mazak multi-axis and multi-spindle lathes to provide flexible solutions for high-volume manufacturing challenges, enabling the most complex parts to be completed in a single operation.
• Assembly and Subassembly Services Contract manufacturing services for simple to complex assembly and subassembly of medical devices and precision components, including kitting, packaging, labeling, sterilization management, testing, and overall program management.
• Medical Device Machining ISO 13485-certified and FDA-registered precision CNC machining of medical components including biopsy devices, neurosurgery devices, nerve stimulation devices, surgical instruments with suction/irrigation/aspiration, O2 regulator parts, bone-cutting surgical bits, and miniature metal device components.
• RF Connector Machining Precision CNC machining of RF connector components for defense, aerospace, and high-end electronics, with tolerances as tight as ±0.0001 inches, supporting materials including stainless steel, brass, beryllium copper, and specialized alloys with plating options such as gold, silver, and nickel.
• Aerospace and Defense Machining ITAR-compliant precision CNC machining of aerospace and defense components for air, land, and sea vehicles, including microwave systems, avionics, satellite communications, and secure communications equipment using various metals.
• Metrology and Quality Control Services Fully capable quality and metrology lab using advanced coordinate measuring machines (CMMs), including the Micro-Vu Vertex System and multi-sensor CMM, with quality procedures covering FMEA, IQ, OQ, and PQ validation, ensuring full traceability from initial material inspection to final part verification.
• Controlled Environment Room Manufacturing Environmentally controlled manufacturing room with air filtration, temperature and humidity control, and static control systems for aerospace, semiconductor, optical, and medical device manufacturing; convertible to a Class 8 cleanroom as needed.
• Kitting, Packaging, and Labeling Services Kitting, packaging, labeling, and pouching services for medical devices within controlled manufacturing environments, including supply chain management and sterilization support.

Quantifiable outcome

• Over 20+ years supplier relationship with Samtec
• +3 more outcomes

Named customers7 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Three partnerships are on record, tiered minor and core.

• Youth with a Mission (YWAM)minorOthers · 1 January 2018GMI partners with Youth with a Mission and Homes of Hope for annual mission trips to Mexico. The company sends employees and guests annually to build homes for families in need. GMI covers flights, hotel, and meals for all participants.
• Homes of HopeminorOthers · 1 January 2018Annual mission trip partner for building homes in Mexico. GMI has completed multiple home builds since 2018, constructing 16' x 20' homes with concrete floors, windows, and locking doors for families previously living in inadequate housing.
• Precision Connector Inc.coreStrategic or Co-development PartnerGMI's largest customer in the RF connector industry. Precision Connector Inc. designs and assembles RF connectors. GMI is a strong manufacturing partner producing PCI's precision RF connector products for defense, aerospace, and high-end electronics applications.

Scale indicators6 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• Tecomet: Tecomet is a precision contract manufacturer of complex components and assemblies for medical devices, aerospace & defense. Highly comparable to GMI across the same verticals (orthopedic implants, surgical instruments, defense) and similar Swiss-style/multi-axis machining capabilities.
• Norman Noble: Norman Noble is a precision CNC machining and micromanufacturing shop focused on medical devices and aerospace, manufacturing miniaturized, tight-tolerance components. Same ISO 13485/FDA-registered profile and Swiss-style turning playbook as GMI, with overlap in surgical and implant components.
• Avalign Technologies: Avalign Technologies is a medical device-focused contract manufacturer producing precision components and instruments for orthopedics, spine, and surgical applications. Directly comparable to GMI's medical device segment and assembly capabilities.
• Tegra Medical: Tegra Medical provides precision machining, tube forming, and assembly for medical device OEMs under ISO 13485. Highly similar contract manufacturing profile to GMI across surgical, interventional, and implant markets.
• Paramit Corporation: Paramit is a contract manufacturer of precision medical devices and instruments, with ISO 13485 certification and assembly capabilities for in-vitro diagnostics and surgical instruments. Comparable to GMI on precision machining plus full assembly for medical OEMs.
• Dynacraft: Dynacraft is a precision CNC machining contract manufacturer serving aerospace, defense, and medical device customers with Swiss-style turning and multi-axis capabilities. Closely comparable to GMI on technology stack and customer verticals.

Broad incumbents

• Integer Holdings: Integer Holdings is a large medical device outsource manufacturer specializing in components and assemblies for cardiac, neuromodulation, and orthopedic markets. Broad incumbent offering similar capabilities at much greater scale than GMI, including precision components.
• Plexus Corp: Plexus is a global contract manufacturer with a Healthcare and Aerospace/Defense segment providing precision machining and full assembly. Overlaps with GMI's medical/aerospace contract manufacturing work as part of a much broader EMS offering.
• Precision Castparts Corp: Precision Castparts (Berkshire Hathaway subsidiary) is a major diversified manufacturer of complex metal components for aerospace and defense. Overlaps with GMI's aerospace & defense precision component work at vastly larger scale and broader product scope.

Emerging players

• Fictiv: Fictiv is a digital manufacturing platform that brokers CNC machined and injection molded parts across a network of qualified shops. Represents an emerging model for sourcing precision components, including medical and aerospace, that competes for the same workloads GMI pitches via its enterprise sales motion.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/gmicorporation
• Facebookfacebook.com/GMICORPINDIANA
• LinkedInlinkedin.com/company/gmi-corporation

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 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 GMI