Expert Precision Metal Machining Services with Quality Assurance

Criterion Precision Machining delivers mission-critical components with tolerances down to ±.0002" for medical device, aerospace, defense, and photonics industries. Our ISO 13485 and ISO 9001 certified facility combines advanced Swiss turning, CNC milling, and comprehensive quality assurance to ensure your precision metal machining projects meet the highest standards where failure is not an option.

Precision CNC machining center producing high-tolerance metal components

Our Precision Metal Machining Services

Complete precision machining solutions from prototyping to production with certified quality assurance.

Swiss Turning

Complex components with tight tolerances down to ±.0002" for small-diameter, high-volume production using multi-axis Swiss turning centers.

CNC Milling

Precision 3-, 4-, and 5-axis milling for complex, multi-axis components with tight tolerances and consistent repeatability.

CNC Turning

High-precision turning for cylindrical and complex geometry parts, delivering tight tolerances and smooth surface finishes.

Prototyping

Production-intent prototyping with same precision and quality standards as full production, bridging design and manufacturing.

Quality Inspection

Certified quality assurance with Global Advantage CMM, OASIS optical inspection system, and comprehensive documentation services.

No Failure Industries

Mission-Critical Precision Metal Machining Excellence

Since 1953, Criterion has specialized in precision metal machining for industries where failure is not an option. Our ISO 13485 and ISO 9001 certified facility produces components with tolerances down to ±.0002" using advanced Swiss turning, multi-axis CNC milling, and comprehensive quality assurance. We serve medical device, aerospace, defense, and photonics sectors with consistent quality and exacting precision.

Precision machined metal components with quality inspection equipment
Trusted by Industry Leaders

Success Stories

Delivering precision components for leading companies in mission-critical applications.

"Criterion's Swiss Turning has been our go-to for medical device micro-components for five years. Their ±.0002" tolerances and titanium expertise consistently exceed our quality standards."

Dr. Patricia Chen

"We struggled with prototype-to-production transitions until Criterion solved it. Their production-intent prototyping means zero re-qualification delays when scaling up orders."

James Morrison

"For precision metal machining, Criterion is unmatched in our sector. Their ISO 13485 certification and ITAR registration give us confidence for classified aerospace contracts."

Lieutenant Colonel Robert Hayes

"Tight deadline for a surgical instrument order? Criterion delivered our CNC Turning components in 10 days without compromising quality. Their responsiveness is exceptional."

Susan Walters

"Their Quality Inspection service includes free Certificates of Conformance—no hidden fees. Combined with PC-DMIS CMM validation, we get best-value precision metal machining."

Michael Rodriguez

"Working with Criterion for eight years. Kelly Marflak's Quality team catches defects we'd miss. Trust built over time, and their proactive communication makes them partners, not vendors."

Thomas Fitzgerald

"Their 5-Axis CNC Milling with TESTASTAR probe and SPC software enabled us to machine complex photonics lens housings with repeatable accuracy across 50-unit production runs."

Dr. Amelia Sato

"As a medical device supplier, precision metal machining partners are critical. Criterion's woman-owned status, FDA registration, and 70-year track record set industry benchmarks."

Victoria Hernandez

"Criterion's Swiss Turning has been our go-to for medical device micro-components for five years. Their ±.0002" tolerances and titanium expertise consistently exceed our quality standards."

Dr. Patricia Chen

"We struggled with prototype-to-production transitions until Criterion solved it. Their production-intent prototyping means zero re-qualification delays when scaling up orders."

James Morrison

"For precision metal machining, Criterion is unmatched in our sector. Their ISO 13485 certification and ITAR registration give us confidence for classified aerospace contracts."

Lieutenant Colonel Robert Hayes

"Tight deadline for a surgical instrument order? Criterion delivered our CNC Turning components in 10 days without compromising quality. Their responsiveness is exceptional."

Susan Walters

"Their Quality Inspection service includes free Certificates of Conformance—no hidden fees. Combined with PC-DMIS CMM validation, we get best-value precision metal machining."

Michael Rodriguez

"Working with Criterion for eight years. Kelly Marflak's Quality team catches defects we'd miss. Trust built over time, and their proactive communication makes them partners, not vendors."

Thomas Fitzgerald

"Their 5-Axis CNC Milling with TESTASTAR probe and SPC software enabled us to machine complex photonics lens housings with repeatable accuracy across 50-unit production runs."

Dr. Amelia Sato

"As a medical device supplier, precision metal machining partners are critical. Criterion's woman-owned status, FDA registration, and 70-year track record set industry benchmarks."

Victoria Hernandez

"Criterion's Swiss Turning has been our go-to for medical device micro-components for five years. Their ±.0002" tolerances and titanium expertise consistently exceed our quality standards."

Dr. Patricia Chen

"We struggled with prototype-to-production transitions until Criterion solved it. Their production-intent prototyping means zero re-qualification delays when scaling up orders."

James Morrison

"For precision metal machining, Criterion is unmatched in our sector. Their ISO 13485 certification and ITAR registration give us confidence for classified aerospace contracts."

Lieutenant Colonel Robert Hayes

"Tight deadline for a surgical instrument order? Criterion delivered our CNC Turning components in 10 days without compromising quality. Their responsiveness is exceptional."

Susan Walters

"Their Quality Inspection service includes free Certificates of Conformance—no hidden fees. Combined with PC-DMIS CMM validation, we get best-value precision metal machining."

Michael Rodriguez

"Working with Criterion for eight years. Kelly Marflak's Quality team catches defects we'd miss. Trust built over time, and their proactive communication makes them partners, not vendors."

Thomas Fitzgerald

"Their 5-Axis CNC Milling with TESTASTAR probe and SPC software enabled us to machine complex photonics lens housings with repeatable accuracy across 50-unit production runs."

Dr. Amelia Sato

"As a medical device supplier, precision metal machining partners are critical. Criterion's woman-owned status, FDA registration, and 70-year track record set industry benchmarks."

Victoria Hernandez
The Criterion Difference

Why Choose Criterion Precision Machining?

Three generations of precision machining excellence serving mission-critical industries.

Extreme Precision

Tight tolerances down to ±.0002" with advanced Swiss turning and multi-axis capabilities.

Certified Quality

ISO 13485 and ISO 9001 certified with comprehensive quality assurance programs.

Advanced Technology

State-of-the-art CNC equipment, CMM inspection, and OASIS optical measurement systems.

Legacy Experience

70+ years of machining expertise specializing in no-failure industries since 1953.

Meet The Expert Team

Industry professionals dedicated to precision machining 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 commitment to excellence in precision manufacturing. Under her leadership, Criterion has maintained its position as a trusted partner for mission-critical industries including medical devices, aerospace, defense, and photonics. Tanya's vision continues the company's 70-year legacy while driving innovation in advanced machining technologies and quality systems. Her dedication to maintaining the highest standards ensures that Criterion delivers components where failure is not an option, upholding the company's reputation for precision rooted in legacy and focused on the future.

Kelly Marflak, Quality Manager at Criterion Precision Machining

Kelly Marflak

Quality Manager

Kelly Marflak oversees Criterion's comprehensive quality assurance program, ensuring every component meets the exacting standards required by mission-critical industries. With expertise in ISO 13485 and ISO 9001 quality systems, Kelly manages the implementation of advanced inspection technologies including the Global Advantage CMM with PC-DMIS software and the OASIS optical inspection system. Her meticulous attention to detail and commitment to continuous improvement ensures that Criterion maintains its reputation for delivering precision components with tolerances down to ±.0002". Kelly's leadership in quality management is essential to serving industries where failure is not an option.

Mike Pinchot, Estimator/Project Manager at Criterion Precision Machining

Mike Pinchot

Estimator/Project Manager

Mike Pinchot brings extensive expertise in project management and precision machining estimation to Criterion's operations. As both Estimator and Project Manager, Mike ensures that complex precision machining projects are accurately assessed and efficiently executed from initial quote through final delivery. His deep understanding of Swiss turning, CNC milling, and turning capabilities enables him to provide accurate timelines and cost estimates for challenging components in medical device, aerospace, defense, and photonics applications. Mike's project management skills ensure seamless communication with clients and on-time delivery of mission-critical components that meet Criterion's exacting quality standards.

Certified & Trusted

Awards and Recognition

ISO 13485 certification logo

ISO 13485

Medical Device Quality Management

ISO 9001 certification logo

ISO 9001

Quality Management System

WBENC membership certification logo

WBENC Member

Women's Business Enterprise Certified

Ready to Discuss Your Precision Machining Project?

Get a detailed quote for your precision metal machining requirements. Our experts will review your specifications and provide accurate pricing and timeline estimates.

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