Certified Grinding Services


Approvals and Certified Grinding Services

Duval Precision Grinding holds a number of key approvals and certifications that allow customers to rely on our expertise to meet even the most demanding specifications. Duval’s commitment to quality service and strict adherence to US government requirements for aviation, defense, and military jobs is apparent in all our certified grinding services.


  • ISO 9001:2015/AS9100D
  • Registered ITAR compliance
  • Nadcap-accredited service vendor

These certifications and approvals result from compliance with rigorous and prescribed protocols for jobs demanding excellence while meeting all certification regulations and standards. At Duval, we strive to meet and exceed customer expectations in every step of our process.

Strict Adherence to DOD Protocols, ISO9001:2015/AS9100D

Duval is a grinding service provider with an AS9100D and ISO 9001:2015 certified Quality Management System and observes strict adherence to all supplemental protocols relevant to DOD regulations and requirements.

Our quality management system has allowed us to establish a holistic approach to quality assurance that encompasses all facets of customer engagement and job completion. Duval Precision Grinding is registered ITAR compliant and has a solid understanding of ITAR requirements. We have a history of providing certified precision grinding services for components used in military and defense applications.

Duval Precision Grinding is a Nadcap-accredited provider of grinding services, strictly focused on eliminating redundant process audits and expediting job completion. This Nadcap accreditation is the result of strict adherence to standardized requirements of the aerospace industry and pertinent government regulations.

Job Documentation

(available by request)

Certificate of Compliance 

Duval Precision Grinding can provide a Certificate of Compliance (CoC) proving that the part supplied or grinding service performed meets all required specifications.

Statistical Process Control

Statistical process control (SPC) uses statistical methods to achieve the consistent production of parts, focusing on early detection of issues and the prevention of problems. Duval Precision Grinding uses SPC to monitor and control every process, be it refurbishing, coating, or precision grinding a part. If effectively applied, SPC enables the consistent delivery of client parts with minimal to zero rework or scrap.

100% Inspection Reports

Duval Precision Grinding offers 100% inspection reports. To provide a 100% inspection report, an expert machinist inspects and then completely documents every dimension of a part.

First Article Inspection Report 

First article inspection reports are a service Duval Precision Grinding offers clients to ensure that, as the job moves on the shop floor, the production work meets all requirements. The process includes inspection of the the first part and approval by the customer before the job proceeds.

In addition to these certifications, Duval Precision Grinding voluntarily complies with DOT 49 CFR Part 40, and has developed and implemented a DOT workplace drug and alcohol program. The program has clear policies, provisions for education and training, drug and alcohol testing, and referral for evaluation and treatment when necessary.

Do you have a precision grinding job that requires certification? Contact Duval Precision Grinding today for details on our certifications and approvals.

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Certified Grinding Experts

How to Choose A Precision Grinding Vendor


Cover of Duval Precision Grinding e-book titled How to Choose A Precision Grinding Vendor

How to Choose A Precision Grinding Vendor