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.

Step-by-step cleanroom precision machining process at Criterion Precision Machining

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

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.

Professional headshot of Tanya DiSalvo, President

Tanya DiSalvo

President

As third-generation owner and President of Criterion Precision Machining, Tanya DiSalvo leads our commitment to delivering mission-critical components for Texas railroad infrastructure. Under her leadership, Criterion has evolved into a woman-owned precision machining company specializing in the 'No Failure' sectors, including railroad safety systems. Tanya's vision has guided the company's investment in advanced CNC technology and ISO certification programs, ensuring our Texas railroad clients receive components that meet the most stringent safety and performance standards. Her dedication to quality excellence and operational efficiency has positioned Criterion as a trusted partner for railroad manufacturers requiring precision components that perform reliably across Texas's diverse operating environments, from Gulf Coast humidity to West Texas desert conditions.

Professional headshot of Kelly Marflak, Quality Manager

Kelly Marflak

Quality Manager

Kelly Marflak serves as Quality Manager at Criterion Precision Machining, overseeing our comprehensive quality assurance programs critical to railroad component manufacturing. With deep expertise in precision inspection protocols, Kelly manages our certified Quality Assurance program that includes multiple points of precision inspection built into manufacturing processes. She oversees the operation of our Global Advantage CMM with PC-DMIS software, OASIS Optical Automatic Smart Inspection System, and Keyence measuring systems capable of measuring up to 99 dimensions simultaneously. Kelly's meticulous attention to detail ensures every railroad component meets the exacting tolerances and safety standards required for Texas railroad applications. Her leadership in quality control processes has been instrumental in maintaining our ISO 13485 and ISO 9001 certifications, providing railroad manufacturers with the documentation and compliance verification essential for safety-critical components operating across Texas's extensive rail network.

Professional headshot of Mike Pinchot, Estimator/Project Manager

Mike Pinchot

Estimator/Project Manager

Mike Pinchot brings extensive project management expertise to Criterion's railroad machining operations as Estimator and Project Manager. With deep understanding of precision manufacturing requirements, Mike works closely with Texas railroad clients to develop accurate project estimates and manage complex machining programs from concept through delivery. His technical expertise enables him to assess challenging railroad component specifications and coordinate multi-axis machining operations, Swiss turning processes, and quality inspection requirements. Mike's project management approach ensures railroad components are delivered on time and within budget while meeting the stringent quality standards required for safety-critical applications. His collaborative work with engineering teams and manufacturing personnel has streamlined processes for producing complex railroad parts, from prototype development through full production runs, ensuring Texas railroad infrastructure receives components manufactured to the highest precision standards.

Professional headshot of David Glass, Chief Financial Officer

David Glass

Chief Financial Officer

David Glass serves as Chief Financial Officer at Criterion Precision Machining, bringing strategic financial leadership to support our continued growth and investment in advanced manufacturing capabilities. With his comprehensive understanding of manufacturing economics and operational efficiency, David ensures that our precision machining operations remain competitive while maintaining the highest quality standards. His financial expertise enables Criterion to make strategic investments in cutting-edge CNC equipment, quality systems, and workforce development that directly benefit our clients in mission-critical industries. David's analytical approach to business management helps optimize our manufacturing processes and resource allocation, ensuring we can deliver exceptional value to customers while maintaining the financial stability necessary for long-term partnerships. His commitment to operational excellence supports our ability to serve the demanding requirements of medical device, aerospace, defense, and photonics manufacturers who rely on our precision machining capabilities.

Kellyanne Gottschalk, Internal Systems Manager at Criterion Precision Machining

Kellyanne Gottschalk

Internal Systems Manager

Kellyanne Gottschalk serves as Internal Systems Manager at Criterion Precision Machining, responsible for managing and optimizing the company's operational and business systems, including the ProShop ERP platform. Her role is critical in ensuring seamless workflow from order intake to final delivery, enabling real-time visibility into production scheduling, quality documentation, and compliance tracking. Kellyanne's expertise in systems management supports Criterion's ability to scale efficiently while maintaining the rigorous documentation and traceability standards required by regulated industries such as medical devices and aerospace. Her work underpins the company's operational excellence and helps ensure every project is delivered on time and in full compliance.

Nilda Feliciano, Customer Service representative at Criterion Precision Machining

Nilda Feliciano

Customer Service

Nilda Feliciano is the Customer Service representative at Criterion Precision Machining, serving as a dedicated point of contact for clients throughout the entire order lifecycle. From initial inquiries to order updates and delivery coordination, Nilda ensures that every client receives responsive, clear, and professional communication. Her commitment to customer satisfaction reflects Criterion's values of reliability and partnership, particularly important for clients in time-sensitive industries like aerospace, defense, and medical devices. Nilda's friendly and knowledgeable approach helps build lasting relationships with customers, ensuring they feel supported and informed at every stage of their project with Criterion.

Bonnie Paletta, Office Administrator at Criterion Precision Machining

Bonnie Paletta

Office Administrator

Bonnie Paletta serves as Office Administrator at Criterion Precision Machining, keeping the day-to-day operations of the business running smoothly. Her organizational skills and attention to detail ensure that administrative processes, documentation, and internal coordination are handled efficiently, freeing up the production and quality teams to focus on delivering precision components. Bonnie is a vital part of the Criterion team, contributing to the company's culture of professionalism and reliability. Her support role touches every department, helping to maintain the high standards of communication and organization that Criterion's clients in medical device, aerospace, and defense industries depend on.

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.