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Business Details
50+ Years
experience
Precision CNC Machining Services in Mount Vernon, NY
Founded in 1957, Own Instrument is a fourth-generation family-owned and operated precision CNC machining company based in Mount Vernon, New York. Our legacy combines decades of craftsmanship with cutting-edge technology, including 5-axis CNC mills, lathes, and advanced CAD/CAM systems. We specialize in producing high-precision components for industries such as aerospace, medical, and defense, serving clients like Boeing, Lockheed Martin, and Stryker. Our ISO 9001:2015 and AS9100:2016 certifications underscore our commitment to quality control and compliance with rigorous standards, including Mil-I-45208A and Mil-STD-45662A. With a focus on long-term planning and innovation, we deliver just-in-time production, prototyping, and specialized tooling solutions.

Our facility houses state-of-the-art equipment, supported by skilled technicians who ensure pinpoint accuracy at every stage. We prioritize personalized service, maintaining the values of a family business while adapting to modern technological advancements. Clients benefit from our expertise in short/long-run production, deburring, honing, and engineering support. Located at 250 East 7th St, we welcome inquiries and facility tours, offering direct contact via phone or email for quotes and project consultations.
Services
CNC Milling CNC Turning Prototyping Quality Control Engineering Support
Details
  • Year established: 1957
Highlights and features
  • Four generations of family-owned expertise in precision machining.
  • ISO 9001:2015 and AS9100:2016 certified for quality assurance.
  • Advanced 5-axis CNC mills and CAD/CAM technology integration.
  • Just-in-time production and prototyping capabilities.
  • Proven track record with aerospace and defense industry leaders.
Associations and certifications
  • ISO 9001:2015
  • AS9100:2016
Services
CNC Milling
Our CNC milling services utilize 5-axis HAAS mills with 50-tool magazines to produce complex, high-tolerance components. Advanced Teksoft and SOLIDWORKS integration ensures precision for aerospace and medical applications. Clients benefit from rapid prototyping and large-scale production capabilities.
CNC Turning
CNC turning operations employ Doosan Lynx and Hardinge Conquest lathes with live tooling for precision shafts and cylindrical parts. Capable of handling bar stock up to 1.625 inches, this service supports tight-tolerance requirements for defense and industrial clients.
Quality Control
Quality assurance includes optical comparators, Sunnen bore gages, and Federal air gages calibrated to Mil-STD-45662A. Our documented inspection processes per Mil-I-45208A ensure compliance with ISO 9001:2015 and AS9100:2016 standards for critical aerospace components.
Engineering Support
We provide CAD/CAM engineering support for optimizing part designs and tooling fixtures. This service bridges client concepts with manufacturability, reducing lead times for prototypes and production runs in high-precision applications.
Prototyping
Short-run prototyping leverages our CNC fleet and JIT production methods to validate designs before full-scale manufacturing. Clients receive functional samples with tolerances as tight as 0.0001 inches for aerospace and medical device development.
People
Jerry Chapins Jr.
President
Jerry Chapins Jr. leads Own Instrument with fourth-generation expertise, overseeing operations and strategic growth. His leadership maintains the company's legacy of precision machining while advancing technological capabilities for aerospace and defense clients.
Katrina Chapins
Vice President
Katrina Chapins manages client relations and quality assurance at Own Instrument. With a focus on customer service, she ensures adherence to ISO standards and coordinates engineering support for complex prototyping projects.
Questions
What industries does Own Instrument serve?
We serve aerospace, medical, defense, and industrial sectors, providing precision components for companies like Boeing, SpaceX, and Stryker.
Are your machining services certified?
Yes, we are ISO 9001:2015 and AS9100:2016 certified, with quality control compliant to Mil-I-45208A and Mil-STD-45662A standards.
What CNC equipment do you use?
Our facility includes HAAS 5-axis mills, Doosan and Hardinge lathes, and conventional manual machining tools for diverse production needs.
Can you handle prototype projects?
Yes, we specialize in prototyping with tolerances as tight as ±0.0001 inches, supported by CAD/CAM engineering and JIT production methods.
How do you ensure part accuracy?
We use optical comparators, air gages, and calibrated micrometers for inspection, monitored by skilled technicians at every production stage.