Expert Precision Screw Machining Services in California

Partner with California's trusted precision machining experts for mission-critical components. Criterion delivers Swiss turning, CNC milling, and prototyping services with tolerances down to ±0.0002" for medical device, aerospace, defense, and photonics industries across the Golden State.

Precision screw machining operation with Swiss turning equipment

Our Precision Screw Machining Services

Complete machining solutions from prototyping to production with tolerances down to ±0.0002".

Swiss Turning

High-precision Swiss turning for complex components with tight tolerances, ideal for small-diameter, high-volume production.

CNC Milling

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

CNC Turning

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

Prototyping

Production-intent prototyping that bridges design and production, ideal for testing fit, function, and manufacturability with precision.

Quality Inspection

Certified Quality Assurance program with precision inspections using Global Advantage CMM and OASIS optical inspection systems.

Material Expertise

Specialized machining of titanium, stainless steels, specialty plastics, PEEK, and aerospace-grade alloys for critical applications.

No-Failure Standards

Mission-Critical Precision for California's Leading Industries

Serving California's innovative medical device, aerospace, and tech sectors, Criterion delivers precision machined components where failure is not an option. Our California clients benefit from our expertise with the state's demanding regulatory environment, from FDA compliance to aerospace quality standards, ensuring your critical components meet California's industry-leading requirements.

Precision machined medical device components with measurement tools
Trusted Excellence

Success Stories

Delivering mission-critical components for industry leaders across medical, aerospace, and defense sectors.

"Criterion's Swiss Turning capabilities are unmatched. We've relied on them for five years for intricate medical components. Their ±.0002" tolerances and titanium expertise are exceptional."

Dr. Sarah Chen

"Our aerospace parts required complex 5-axis CNC milling with zero room for error. Criterion solved our tolerance challenges and delivered production-ready components ahead of schedule."

James Morrison

"For precision screw machining services in California, we struggled finding a reliable partner until Criterion. Their quality inspection systems and ISO certifications give us complete confidence."

Marcus Rodriguez

"We needed prototypes in two weeks. Criterion's production-intent prototyping on their same inspection equipment meant zero rework. Their turnaround saved our product launch timeline."

Emma Whitmore

"Criterion's Quality Inspection service with Global Advantage CMM and OASIS system eliminated our rework costs. Zero-charge documentation saved us thousands while ensuring FDA compliance."

Thomas Bradley

"Working with Criterion for eight years. Their CNC Turning expertise on specialty alloys and consistent ITAR compliance makes them irreplaceable for our defense contracts."

Colonel Richard Hayes

"Precision screw machining services in California were hard to find until we discovered Criterion. Their woman-owned status, ISO 13485 certification, and micro-part expertise set them apart."

Patricia Nguyen

"Their 8-Axis CNC Swiss machines and Keyence measurement systems can handle 99 dimensions simultaneously. For complex photonics components, their technical depth is unmatched."

Dr. Geoffrey Ashford

"Criterion's Swiss Turning capabilities are unmatched. We've relied on them for five years for intricate medical components. Their ±.0002" tolerances and titanium expertise are exceptional."

Dr. Sarah Chen

"Our aerospace parts required complex 5-axis CNC milling with zero room for error. Criterion solved our tolerance challenges and delivered production-ready components ahead of schedule."

James Morrison

"For precision screw machining services in California, we struggled finding a reliable partner until Criterion. Their quality inspection systems and ISO certifications give us complete confidence."

Marcus Rodriguez

"We needed prototypes in two weeks. Criterion's production-intent prototyping on their same inspection equipment meant zero rework. Their turnaround saved our product launch timeline."

Emma Whitmore

"Criterion's Quality Inspection service with Global Advantage CMM and OASIS system eliminated our rework costs. Zero-charge documentation saved us thousands while ensuring FDA compliance."

Thomas Bradley

"Working with Criterion for eight years. Their CNC Turning expertise on specialty alloys and consistent ITAR compliance makes them irreplaceable for our defense contracts."

Colonel Richard Hayes

"Precision screw machining services in California were hard to find until we discovered Criterion. Their woman-owned status, ISO 13485 certification, and micro-part expertise set them apart."

Patricia Nguyen

"Their 8-Axis CNC Swiss machines and Keyence measurement systems can handle 99 dimensions simultaneously. For complex photonics components, their technical depth is unmatched."

Dr. Geoffrey Ashford

"Criterion's Swiss Turning capabilities are unmatched. We've relied on them for five years for intricate medical components. Their ±.0002" tolerances and titanium expertise are exceptional."

Dr. Sarah Chen

"Our aerospace parts required complex 5-axis CNC milling with zero room for error. Criterion solved our tolerance challenges and delivered production-ready components ahead of schedule."

James Morrison

"For precision screw machining services in California, we struggled finding a reliable partner until Criterion. Their quality inspection systems and ISO certifications give us complete confidence."

Marcus Rodriguez

"We needed prototypes in two weeks. Criterion's production-intent prototyping on their same inspection equipment meant zero rework. Their turnaround saved our product launch timeline."

Emma Whitmore

"Criterion's Quality Inspection service with Global Advantage CMM and OASIS system eliminated our rework costs. Zero-charge documentation saved us thousands while ensuring FDA compliance."

Thomas Bradley

"Working with Criterion for eight years. Their CNC Turning expertise on specialty alloys and consistent ITAR compliance makes them irreplaceable for our defense contracts."

Colonel Richard Hayes

"Precision screw machining services in California were hard to find until we discovered Criterion. Their woman-owned status, ISO 13485 certification, and micro-part expertise set them apart."

Patricia Nguyen

"Their 8-Axis CNC Swiss machines and Keyence measurement systems can handle 99 dimensions simultaneously. For complex photonics components, their technical depth is unmatched."

Dr. Geoffrey Ashford
The Criterion Difference

Why Choose Criterion Precision Machining?

Your trusted partner for precision components where failure is not an option.

Expertise

70+ years of precision machining excellence serving California's demanding industries.

Precision

Tight tolerances down to ±0.0002" with advanced Swiss and CNC capabilities.

Certification

ISO 13485 and ISO 9001 certified with FDA and ITAR registration for California compliance.

Quality

Global Advantage CMM and OASIS optical inspection systems ensure consistent excellence.

Meet Our Leadership Team

Expert leadership driving precision machining excellence since 1953.

Professional headshot of Tanya DiSalvo, President

Tanya DiSalvo

President

As the third-generation owner and President of Criterion Precision Machining, Tanya DiSalvo leads our woman-owned company with a commitment to excellence that spans over seven decades. Under her leadership, Criterion has evolved into a specialized precision machining company focused on serving industries where failure is not an option. Tanya has spearheaded the company's investment in advanced technology and quality systems, ensuring Criterion meets the exacting demands of medical device, aerospace, defense, and photonics industries. Her vision continues to drive innovation while maintaining the legacy of precision and reliability established by her family since 1953.

Professional headshot of Mike Pinchot, Estimator/Project Manager

Mike Pinchot

Estimator/Project Manager

Mike Pinchot brings extensive expertise in project management and precision machining estimation to Criterion's operations. As Estimator and Project Manager, Mike works closely with clients to understand their specific requirements and translate complex engineering specifications into manufacturable solutions. His deep understanding of machining processes, materials, and industry standards ensures accurate project scoping and successful execution. Mike's attention to detail and commitment to customer satisfaction make him an invaluable liaison between our clients and production teams, ensuring projects are delivered on time and to exact specifications.

Professional headshot of David Glass, Chief Financial Officer

David Glass

Chief Financial Officer

David Glass serves as Chief Financial Officer, bringing strategic financial leadership to Criterion Precision Machining. With extensive experience in manufacturing finance, David ensures the company maintains the financial stability necessary to invest in cutting-edge technology and maintain the highest quality standards. His financial stewardship enables Criterion to continue serving mission-critical industries while maintaining competitive pricing and reliable delivery schedules. David's expertise in cost analysis and financial planning supports the company's growth strategy and commitment to excellence in precision machining services.

Frequently Asked Questions

What tolerances can you achieve with precision screw machining?

We achieve tight tolerances down to ±0.0002" using our advanced Swiss turning and CNC machining capabilities, with multiple precision inspection points throughout the manufacturing process.

What industries do you serve for precision machining?

What materials can you machine?

Are you certified for medical device manufacturing?

What is your minimum order quantity?

How do you ensure quality control?

Do you offer prototyping services?

What is your typical lead time?

Still Have Questions?

Talk to our precision machining experts for detailed technical consultation.

Serving California Industries

Precision machining services for California's leading medical device, aerospace, and technology companies.

Nationwide

Service Coverage

4 Critical Sectors

Industries Served

70+ Years

Experience

Ready to Partner with Us?

Contact us to discuss your precision machining requirements.

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 certification logo

WBENC Certified

Woman-Owned Business Enterprise

Get Your Precision Machining Quote Today

Contact our experts to discuss your precision machining requirements and receive a detailed quote.

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