GMMCO Quality Assurance Policy

With over 50 years experience in manufacturing aerospace components with tolerances commonly at tight as .0002″ to .0005″ of an inch, quality and perfection is a way of life at GMMCO.  We are ISO 9001: 2015 and AS9100 Certified and utilize the latest in measuring equipment technology. Our commitment to exceptional quality and precision components is strong and supported in a variety of ways.


  • ISO 9001:2015 certified
  • AS9100 certified
  • Pratt & Whitney approved supplier

Ethics & Integrity

GMMCO shall provide the highest quality products to those that need and want them. In return, they provide us payment for our service in a free at will trade between free men. We strive to provide high value to our customers. In exchange for our labor and effort, we do not apologize for receiving profit for the benefit of our management, employees and owners. While conducting our business, GMMCO management and employees shall use the highest ethics and integrity with each decision, action, and relationship with our products, employees, customers, suppliers, legal authorities, and general public. We believe in honesty, honor, truth and respecting the confidentiality of certain types of communication.

Quality Engineering

  • Deployment of continuous improvement and six sigma strategies.
  • Process monitoring, SPC and capability studies.
  • Analysis and documentation with a variety of statistical tools such as Minitab and GageTrak.
  • Reverse engineering including review of design specifications and manufacturing tolerances.
  • Full CAD and solid modeling.
  • Comprehensive engineering services and support.

Quality Inspection

  • CMM 3-coordinate measurement system with touch probe and vision Capabilities.
  • Digital testing of measurement of surface smoothness.
  • Mitutoyo microscopes and full gauges
  • High-speed non-contact measurement of complex parts.
  • FAI, in-process, and final inspection.

Tools For Success

  • GMMCO combines an 85 year history of good old fashion machine shop experience with today’s latest in manufacturing technology. Our machinist’s experience ranges from 15 to 40 years, and each is trained as an In Process Inspector.
  • Digital testing of measurement of surface smoothness.
  • Our Precision Machining Department is supported by a Professional Tool Room Department, utilizing a large array of both modern CNC and manual equipment, including lathes, mills, surface grinders, and shaping equipment.
  • Our skilled and experienced tool room staff has built hundreds of custom gauges and precision tooling, and has engineered and built custom lapping and polishing equipment, allowing us to manufacture parts with amazing surface finishes that exceed even the most strict aerospace standards. Our tool room staff performs most of our repairs and tool sharpening in house, as well as post processing needs.

Regulatory Requirements

All materials we use are DFARS compliant. We will comply with all of your quality, certification, and regulatory requirements upon acceptance of your order

Packaging & Scheduling

We adhere to your requests for packaging and scheduling of your orders.