Cleanroom Precision Machining Services

When contamination-free environments are non-negotiable, Criterion Precision Machining delivers cleanroom-grade precision machined components built to the tightest tolerances. From medical devices and aerospace assemblies to photonics and defense applications, our ISO-certified cleanroom machining capabilities ensure every part meets the exacting standards your mission-critical application demands.

Precision machinist working on components inside a controlled cleanroom environment

Our Cleanroom Precision Machining Services

Comprehensive cleanroom machining solutions—from complex multi-axis milling to precision Swiss turning—engineered for zero-failure industries.

CNC Milling

Precision 3-, 4-, and 5-axis CNC milling for complex, multi-axis components with tight tolerances and consistent repeatability, ideal for cleanroom-grade medical, aerospace, and photonics parts.

CNC Turning

High-precision CNC turning for cylindrical and complex geometry parts, delivering tolerances down to ±.0002" with smooth surface finishes for mission-critical cleanroom applications.

Swiss Turning

Specialized Swiss turning for small-diameter, high-precision components with micro-features, tight tolerances, and exceptional surface finishes suited to cleanroom environments.

Prototyping

Production-intent cleanroom prototyping that mirrors final manufacturing standards—same machines, same inspection protocols—enabling seamless scale-up without re-qualification.

Quality Inspection

Certified multi-point inspection using CMM, OASIS optical systems, and Keyence measuring tools, with complimentary Certificates of Conformance and final inspection reports.

Material Expertise

Cleanroom-compatible machining of titanium, stainless steels, aluminum, PEEK, specialty plastics, and advanced alloys for the most demanding high-purity applications.

Service Process

Our 5-Step Cleanroom Precision Machining Process

Engineering Review & Design for Manufacturability

Our team analyzes your part drawings, tolerances, and material requirements before production begins. We identify potential manufacturability challenges early, ensuring your cleanroom component is optimized for precision machining and compliant with FDA, ISO, and ITAR requirements.

Material Selection & Controlled Procurement

Cleanroom Precision Machining

Multi-Point Precision Inspection

Documentation, Packaging & Delivery

Trusted By Industry Leaders

Success Stories

See how Criterion delivers cleanroom precision machining results that mission-critical manufacturers rely on.

"Criterion's Swiss turning capabilities delivered our micro-components with ±.0002" tolerances consistently. Their precision and reliability are exactly what our medical device production demands."

Dr. Sarah Chen

"We had a critical aerospace component deadline and couldn't find anyone who could deliver tight-tolerance CNC milling in our timeframe. Criterion solved it in two weeks without compromising quality."

James Hoffman

"For cleanroom machining services, Criterion stands out with their ISO 13485 certification and proven track record in medical device manufacturing. They understand what 'no failure' truly means."

Michael Torres

"Their 5-axis CNC milling solved our complex geometry challenge that other shops said was impossible. The response time from Tanya's team was outstanding throughout the project."

Rebecca Paulson

"Working with Criterion's Quality Inspection service has been seamless. Their CMM documentation and OASIS system caught dimensional issues we would've missed. Professional and thorough."

David Martinez

"Criterion's production-intent prototyping bridged our design-to-manufacturing gap perfectly. Same machines, same standards, zero re-qualification needed when moving to full production runs."

Lisa Nakamura

"Their cleanroom machining services meet every regulatory requirement we need for FDA and ITAR compliance. Tanya DiSalvo's team demonstrates genuine expertise in 'no failure' industries."

Christopher Webb

"As a fellow aerospace supplier, I recommend Criterion's CNC turning capabilities. Their tolerances rival anyone in the industry, and their woman-owned status is a competitive advantage for our diversified supplier base."

Patricia Gonzalez

"Criterion's Swiss turning capabilities delivered our micro-components with ±.0002" tolerances consistently. Their precision and reliability are exactly what our medical device production demands."

Dr. Sarah Chen

"We had a critical aerospace component deadline and couldn't find anyone who could deliver tight-tolerance CNC milling in our timeframe. Criterion solved it in two weeks without compromising quality."

James Hoffman

"For cleanroom machining services, Criterion stands out with their ISO 13485 certification and proven track record in medical device manufacturing. They understand what 'no failure' truly means."

Michael Torres

"Their 5-axis CNC milling solved our complex geometry challenge that other shops said was impossible. The response time from Tanya's team was outstanding throughout the project."

Rebecca Paulson

"Working with Criterion's Quality Inspection service has been seamless. Their CMM documentation and OASIS system caught dimensional issues we would've missed. Professional and thorough."

David Martinez

"Criterion's production-intent prototyping bridged our design-to-manufacturing gap perfectly. Same machines, same standards, zero re-qualification needed when moving to full production runs."

Lisa Nakamura

"Their cleanroom machining services meet every regulatory requirement we need for FDA and ITAR compliance. Tanya DiSalvo's team demonstrates genuine expertise in 'no failure' industries."

Christopher Webb

"As a fellow aerospace supplier, I recommend Criterion's CNC turning capabilities. Their tolerances rival anyone in the industry, and their woman-owned status is a competitive advantage for our diversified supplier base."

Patricia Gonzalez

"Criterion's Swiss turning capabilities delivered our micro-components with ±.0002" tolerances consistently. Their precision and reliability are exactly what our medical device production demands."

Dr. Sarah Chen

"We had a critical aerospace component deadline and couldn't find anyone who could deliver tight-tolerance CNC milling in our timeframe. Criterion solved it in two weeks without compromising quality."

James Hoffman

"For cleanroom machining services, Criterion stands out with their ISO 13485 certification and proven track record in medical device manufacturing. They understand what 'no failure' truly means."

Michael Torres

"Their 5-axis CNC milling solved our complex geometry challenge that other shops said was impossible. The response time from Tanya's team was outstanding throughout the project."

Rebecca Paulson

"Working with Criterion's Quality Inspection service has been seamless. Their CMM documentation and OASIS system caught dimensional issues we would've missed. Professional and thorough."

David Martinez

"Criterion's production-intent prototyping bridged our design-to-manufacturing gap perfectly. Same machines, same standards, zero re-qualification needed when moving to full production runs."

Lisa Nakamura

"Their cleanroom machining services meet every regulatory requirement we need for FDA and ITAR compliance. Tanya DiSalvo's team demonstrates genuine expertise in 'no failure' industries."

Christopher Webb

"As a fellow aerospace supplier, I recommend Criterion's CNC turning capabilities. Their tolerances rival anyone in the industry, and their woman-owned status is a competitive advantage for our diversified supplier base."

Patricia Gonzalez
The Criterion Difference

Why Choose Criterion Precision Machining?

Decades of precision expertise, industry-leading certifications, and an unwavering commitment to zero-failure quality set us apart.

ISO Certified

ISO 13485 and ISO 9001 certified, ensuring cleanroom machining quality systems meet the strictest medical and industrial standards.

70+ Years of Expertise

Founded in 1953 and now in its third generation, Criterion brings unmatched depth of experience to every precision machining project.

Advanced Inspection

Global Advantage CMM, OASIS optical inspection, and Keyence systems verify every dimension—delivering complete traceability for U.S. manufacturers.

No Failure Focus

Specialized in medical device, aerospace, defense, and photonics—industries where precision isn't optional and every component must perform flawlessly.

Meet The Criterion Team

Experienced professionals committed to precision, quality, and mission-critical excellence.

Tanya DiSalvo, President of Criterion Precision Machining

Tanya DiSalvo

President

As the third-generation owner of Criterion Precision Machining, Tanya DiSalvo leads the company with a deep respect for its 70-year legacy and a clear vision for its future. Under her leadership, Criterion has evolved into a nationally recognized woman-owned precision machining company, achieving ISO 13485 and ISO 9001 certifications and expanding its capabilities to serve the most demanding cleanroom environments. Tanya is passionate about advancing manufacturing excellence, fostering a people-powered culture, and positioning Criterion as the go-to partner for medical device, aerospace, defense, and photonics customers who require absolute precision and zero-failure performance in every component delivered.

Mike Pinchot, Estimator and Project Manager at Criterion Precision Machining

Mike Pinchot

Estimator/Project Manager

Mike Pinchot serves as Estimator and Project Manager at Criterion Precision Machining, acting as a critical link between customers and the shop floor. With a thorough understanding of precision machining processes—including CNC milling, CNC turning, and Swiss turning—Mike ensures that every project is accurately scoped, competitively priced, and delivered on time. His hands-on knowledge of cleanroom manufacturing requirements and tight-tolerance components makes him an invaluable resource for customers in the medical device, aerospace, and defense sectors. Mike's attention to detail and proactive communication style ensures that projects move seamlessly from inquiry through production and final delivery.

David Glass, Chief Financial Officer at Criterion Precision Machining

David Glass

Chief Financial Officer

David Glass serves as Chief Financial Officer at Criterion Precision Machining, providing the financial leadership and operational oversight that supports the company's growth and long-term stability. With a focus on sustainable investment in advanced machining technology, quality systems, and workforce development, David ensures that Criterion remains a financially sound and strategically positioned partner for its customers. His work behind the scenes enables Criterion to continually upgrade its cleanroom machining capabilities and maintain the high standards that industries like medical devices, aerospace, and photonics demand—ensuring the company remains a trusted, reliable supplier for decades to come.

Kelly Marflak, Quality Manager at Criterion Precision Machining

Kelly Marflak

Quality Manager

Kelly Marflak leads the Quality Assurance department at Criterion Precision Machining, overseeing the inspection systems and documented processes that keep every cleanroom-machined component within specification. Kelly manages Criterion's certified quality program, including the use of the Global Advantage CMM with PC-DMIS software, the OASIS optical inspection system, and the Keyence multi-dimensional measuring equipment. Her commitment to precision and compliance ensures that Criterion consistently meets ISO 13485 and ISO 9001 standards, while also satisfying the stringent FDA and ITAR requirements of medical device, aerospace, and defense customers who rely on zero-defect performance in every part they receive.

Kellyanne Gottschalk, Internal Systems Manager at Criterion Precision Machining

Kellyanne Gottschalk

Internal Systems Manager

Kellyanne Gottschalk manages Criterion Precision Machining's internal systems, including the ProShop ERP platform that connects engineering, production, quality, and customer service into a unified workflow. Her role is essential to the operational efficiency that allows Criterion to deliver consistent, high-quality cleanroom precision machined components on schedule. By maintaining the integrity of internal processes and data systems, Kellyanne ensures that every order—from first-article prototype runs to full production volumes—flows smoothly through the facility, and that customers receive complete documentation, traceability records, and compliance reports with every shipment.

Nilda Feliciano, Customer Service representative at Criterion Precision Machining

Nilda Feliciano

Customer Service

Nilda Feliciano is the friendly and knowledgeable face of customer service at Criterion Precision Machining. She serves as the primary point of contact for customers seeking updates on orders, documentation requests, delivery schedules, and general inquiries. Nilda's dedication to responsive, personalized communication ensures that every customer—whether a long-standing medical device OEM or a new aerospace supplier—feels supported and informed throughout the entire machining process. Her ability to translate complex manufacturing timelines into clear, actionable updates makes her an indispensable part of the Criterion team and a key reason customers return order after order.

Bonnie Paletta, Office Administrator at Criterion Precision Machining

Bonnie Paletta

Office Administrator

Bonnie Paletta keeps the administrative operations of Criterion Precision Machining running smoothly, supporting every department with the organizational efficiency that a precision manufacturing environment demands. From coordinating schedules and managing supplier documentation to supporting compliance recordkeeping and facilitating internal communications, Bonnie's work ensures that the team can focus on delivering exceptional cleanroom machined components without operational disruption. Her institutional knowledge of Criterion's processes and her meticulous attention to administrative detail make her a cornerstone of the company's ability to serve medical device, aerospace, and defense customers at the highest level of professionalism.

Frequently Asked Questions

What is a cleanroom assembler?

A cleanroom assembler is a trained technician who assembles or machines components inside a controlled environment designed to minimize airborne particles, contaminants, and static. In precision machining, cleanroom assemblers follow strict protocols to ensure parts—especially for medical devices, aerospace, and photonics—are produced and handled without contamination that could compromise performance or compliance.

What is the cost of clean room maintenance?

What are the FDA guidelines for clean rooms?

What is a CNC cleanroom?

What is the ISO standard for CNC?

What tolerances can cleanroom precision machining achieve?

What industries does Criterion serve with cleanroom precision machining?

Does Criterion offer prototyping before full production runs?

Still Have Questions About Cleanroom Machining?

Talk to our precision machining experts for a personalized consultation and project quote.

Our Cleanroom Machining Service Area

Criterion Precision Machining serves mission-critical manufacturers and OEMs throughout the United States from our Brook Park, Ohio facility.

Nationwide U.S.

Service Coverage

Brook Park, Ohio

Headquarters

1953

In Business Since

Do We Service Your Location?

Contact us to discuss your cleanroom precision machining needs—we ship nationwide.

Certified & Trusted

Awards and Recognition

ISO 13485 certification badge for Criterion Precision Machining

ISO 13485 Certified

Medical device quality management system certification.

ISO 9001 certification badge for Criterion Precision Machining

ISO 9001 Certified

International quality management standard for precision machining.

WBENC Women's Business Enterprise certification badge

WBENC Certified

Women's Business Enterprise National Council member certified.

Get a Quote for Cleanroom Precision Machining

Share your part specifications, tolerances, and production requirements. Our team will review your project and respond with a detailed, no-obligation quote tailored to your cleanroom machining needs.

Contact Us Today

For immediate assistance, feel free to give us a direct call at 216-267-1733 You can also send us a quick email at office@criteriontool.com