CNC Precision Machining Service in Riverside

Douglas Machine & Engineering machines components with tolerances from approximately +/-.005 down to +/-.0005, depending on the material, geometry, setup, and inspection requirements. The team reviews specifications before production to determine the right machining strategy, fixture approach, and verification method for consistent results.

Yes. Douglas Machine & Engineering supports aerospace, defense, and other regulated industries with ISO 9001:2015 and AS9100D quality systems, JCP and SAM approvals, and Cage Code 87BF4. Inspection documentation, first article reporting, CMM analysis, and dimensional verification can be incorporated as required by the program.

Yes. The company’s CNC machining capabilities include components up to 20,000 lbs, along with structural fabrication work up to 20 tons. This makes the service suitable for large industrial parts, machinery components, welded assemblies, fixtures, and production equipment requiring both machining accuracy and fabrication strength.

Yes. Douglas Machine & Engineering can coordinate or provide several finishing processes within the overall project workflow. In-house capabilities include blasting, liquid paint, and thermoset powder coating, while qualified partners support plating and heat treat. This helps customers receive parts that are machined, finished, documented, and ready for use.

DM&E can support projects from concept through installation. The in-house design and project management team can help develop a manufacturing process, plan tooling or fixtures, coordinate suppliers, and produce the finished part or assembly. Complete drawings are helpful, but early-stage concepts can also be reviewed for manufacturability.

Inspection can include first article inspection reporting, dimensional verification, certified granite table and gauge checks, and CMM analysis through Exact Metrology when required. The inspection plan is matched to the customer’s specifications, tolerance needs, and industry requirements, ensuring documentation supports regulated or mission-critical applications.

Douglas Machine & Engineering serves industrial, aerospace and defense, pharmaceutical, agricultural, robotics, food-grade packaging, and construction customers. The company’s combination of CNC machining, fabrication, welding, finishing, inspection, and project management is suited for complex parts and assemblies that require reliable production support.

Using one coordinated manufacturing partner reduces transportation costs, avoids multiple purchase orders, and improves control over quality and scheduling. Douglas Machine & Engineering manages in-house work and qualified supplier processes within one project workflow, helping customers maintain accountability from planning through delivery or installation.