CNC Milling
Precision multi-axis CNC milling for complex aerospace components. Our 3-, 4-, and 5-axis capabilities deliver tight tolerances and consistent repeatability for structural and system-critical parts.
When aerospace components demand zero tolerance for failure, Criterion Precision Machining delivers. With decades of precision machining expertise, AS9100D-compliant processes, and advanced multi-axis capabilities, we produce mission-critical aerospace parts—from lightweight structural components to complex defense system hardware—with tolerances down to ±.0002". Trusted by leading aerospace and defense manufacturers across the United States.

End-to-end precision machining solutions engineered for aerospace and defense applications demanding absolute accuracy and compliance.
Precision multi-axis CNC milling for complex aerospace components. Our 3-, 4-, and 5-axis capabilities deliver tight tolerances and consistent repeatability for structural and system-critical parts.
High-precision CNC turning for cylindrical and complex geometry aerospace parts. We hold tolerances to ±.0002" across titanium, stainless steels, and high-performance alloys critical to aerospace applications.
Swiss turning expertise for small-diameter, intricate aerospace components with micro-sized features. Ideal for slender, high-precision parts requiring exceptional surface finishes and tight tolerances.
Production-intent aerospace prototyping machined to the same standards as full production orders. Seamlessly transition from approved prototype to high-volume runs with no reprogramming required.
Certified quality inspection using CMM, OASIS optical systems, and Keyence measuring tools. Full documentation including Certificates of Conformance and final inspection reports included at no charge.
Skilled machining of aerospace-grade materials including titanium, stainless steels, aluminum, specialty plastics, and high-performance alloys—meeting the demanding requirements of aerospace and defense programs.
Aerospace components leave no room for compromise. At Criterion Precision Machining, our AS9100D-compliant processes ensure every part machined for aerospace and defense applications meets the most stringent industry standards. From lightweight aircraft structural components to precision defense system hardware, we leverage advanced 5-axis CNC milling, multi-axis Swiss turning, and certified inspection systems to deliver parts that perform flawlessly. Serving aerospace manufacturers across the United States from our Brook Park, Ohio facility, we bring over 70 years of machining legacy to every order.

See how Criterion delivers precision and reliability for aerospace, defense, and mission-critical manufacturers nationwide.
We bring decades of proven precision machining expertise, rigorous quality systems, and a commitment to zero-failure performance to every aerospace program.
Our quality management systems meet AS9100D, ISO 9001, and ISO 13485 standards—ensuring full aerospace and defense regulatory compliance.
We consistently hold tolerances down to ±.0002" on complex aerospace geometries across titanium, stainless steel, and specialty alloys.
Founded in 1953, Criterion has served U.S. aerospace and defense manufacturers for over seven decades from our Ohio facility.
Our Global Advantage CMM, OASIS optical inspection, and Keyence systems deliver documented, traceable quality on every aerospace part shipped.
Experienced professionals dedicated to precision, quality, and aerospace excellence.

President
As the third-generation owner of Criterion Precision Machining, Tanya DiSalvo leads the company with a commitment to quality, innovation, and serving mission-critical industries. Under her leadership, Criterion has continued its evolution from a general machine shop—founded in 1953—into a specialized precision machining partner for aerospace, defense, medical device, and photonics sectors. Tanya is passionate about maintaining the high standards that have defined Criterion for over 70 years while driving investment in advanced technology and quality systems. As a WBENC-certified woman business owner, she champions diversity and excellence in the manufacturing industry, ensuring Criterion remains a trusted partner for customers who accept nothing less than perfection.

Estimator/Project Manager
Mike Pinchot serves as Estimator and Project Manager at Criterion Precision Machining, acting as a critical bridge between customer requirements and shop floor execution. With deep knowledge of precision machining processes, materials, and aerospace quality standards, Mike ensures that every project is accurately scoped, competitively priced, and delivered on schedule. He works closely with aerospace and defense customers to understand their most demanding specifications, translating complex engineering requirements into actionable production plans. Mike's attention to detail and project management discipline help Criterion consistently meet the exacting standards required for mission-critical aerospace components, from initial quote through final shipment.

Chief Financial Officer
David Glass serves as Chief Financial Officer at Criterion Precision Machining, overseeing the financial operations that support the company's long-term growth and stability. With a thorough understanding of the manufacturing sector's financial landscape, David ensures that Criterion remains well-positioned to invest in the advanced equipment, quality systems, and skilled personnel required to serve aerospace and defense customers. His financial stewardship supports the company's ability to take on complex, long-term aerospace programs while maintaining the agility and responsiveness that customers have come to expect from Criterion over its more than 70-year history.

Quality Manager
Kelly Marflak is Criterion's Quality Manager, responsible for maintaining and continuously improving the company's certified quality management systems, including ISO 9001, ISO 13485, and AS9100D-compliant processes. Kelly oversees all precision inspection activities, manages documentation protocols, and ensures that every aerospace and defense component leaving the facility meets or exceeds customer specifications. Under her leadership, Criterion's quality department leverages a Global Advantage CMM, OASIS optical inspection, and Keyence measurement systems to deliver fully traceable, documented quality on every part. Kelly's dedication to zero-defect outcomes is central to Criterion's reputation as a trusted partner in no-failure industries.

Internal Systems Manager
Kellyanne Gottschalk manages Criterion's internal systems, ensuring that the company's operational infrastructure—including the ProShop ERP platform—runs efficiently and supports seamless production workflows. Her role is instrumental in maintaining data integrity, process documentation, and cross-departmental coordination that is essential for AS9100D and ISO-compliant aerospace manufacturing. Kellyanne's systems management expertise ensures that customer orders, production schedules, quality records, and compliance documentation are all managed with the precision and traceability demanded by aerospace and defense customers. Her work underpins Criterion's ability to scale and respond quickly to evolving customer requirements.

Customer Service
Nilda Feliciano is Criterion's dedicated Customer Service representative, serving as the primary point of contact for customers throughout the order lifecycle. She ensures that aerospace and defense customers receive clear, timely communication from the moment an inquiry is placed through final delivery. Nilda's commitment to responsive, attentive service reflects Criterion's broader dedication to partnership—understanding that customers in no-failure industries need a supplier they can rely on not just for quality parts, but for reliable communication and support. Her role is central to building the long-term customer relationships that have defined Criterion's success for over seven decades.

Office Administrator
Bonnie Paletta serves as Office Administrator at Criterion Precision Machining, providing the organizational backbone that keeps day-to-day operations running smoothly. From managing administrative workflows to coordinating internal communications and supporting compliance documentation, Bonnie plays a vital behind-the-scenes role in Criterion's operational success. Her attention to detail and organizational skills ensure that the administrative side of the business meets the same high standards of accuracy and reliability that Criterion's customers expect from its machined components. Bonnie's contributions are an essential part of delivering a seamless, professional experience to aerospace and defense customers from first contact through final delivery.
What is AS9100D certification?
AS9100D is the internationally recognized quality management system standard for the aviation, space, and defense industries. It builds upon ISO 9001 and adds additional requirements specific to aerospace, such as risk management, configuration control, and first article inspection, ensuring suppliers consistently meet the rigorous quality and safety demands of aerospace programs.
What is the AS9100D standard for aerospace?
What does it mean for a company to receive an AS9100 certificate?
What is considered precision machining?
What aerospace materials does Criterion Precision Machining work with?
Does Criterion offer aerospace prototyping services?
What quality inspection capabilities does Criterion have for aerospace parts?
Is Criterion Precision Machining ITAR registered?
Our aerospace machining experts are ready to discuss your project requirements and quality needs.
Criterion Precision Machining delivers AS9100D-compliant aerospace components to manufacturers and programs across the entire United States.
Nationwide U.S.
Service Area
Brook Park, Ohio
Headquarters
Since 1953
In Business
Contact us to discuss your specifications, tolerances, and program requirements with our team.
Internationally recognized quality management system certification.
Medical device quality management system certification.
Women's Business Enterprise National Council certified supplier.
Share your part drawings, tolerances, and material requirements with our team. We'll respond promptly with a competitive quote and confirm our ability to meet your AS9100D compliance and schedule requirements.
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
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