Precision CNC Machine Shop in San Francisco, CA

A precision machine shop manufactures metal or engineered components to exact specifications using equipment such as CNC mills, lathes, inspection tools, and fabrication systems. Precision shops focus on tight tolerances, repeatability, material integrity, and documented quality. Douglas Machine & Engineering supports this work with CNC machining, welding, inspection, coatings, supplier coordination, and quality systems for demanding industrial programs.

Douglas Machine & Engineering machines components with tolerances ranging from +/-.005 to +/-.0005, depending on the part geometry, material, process, and inspection requirements. Projects are reviewed before production so the team can plan the correct machining strategy, tooling, workholding, and verification method for the specification. Tight-tolerance work is supported by quality documentation and inspection resources.

DM&E supports industrial, aerospace and defense, pharmaceutical, agricultural, robotics, food grade packaging, and construction customers. These industries often require strong process control, precise tolerances, reliable documentation, durable finishes, and responsive project management. The company’s capabilities are well suited for complex machined components, fabricated assemblies, fixtures, tooling, weldments, and automation-related manufacturing projects.

Yes. Douglas Machine & Engineering operates as a one stop shop with in-house design support, CNC machining, fabrication, AWS-certified welding, inspection, paint, powder coating, and blast preparation. The team also coordinates qualified partners for plating and heat treat when needed. This consolidated approach can reduce transportation costs, simplify purchasing, and keep accountability for the finished product centralized.

Yes. Inspection support includes first article inspection reporting, dimensional verification, certified granite tables and gauges, and CMM analysis through Exact Metrology when required. Documentation can support aerospace, defense, and regulated industry requirements. Quality is managed from planning through delivery, helping customers confirm that parts meet dimensional, material, and finish specifications before they move into service.

Yes. Douglas Machine & Engineering can machine components up to 20,000 lbs and build structural fabrications up to 20 tons. These capabilities are useful for heavy industrial assemblies, large tooling, fixtures, weldments, and equipment components. Each project is reviewed for handling, fixturing, machining access, welding requirements, finishing, and inspection needs before production begins.

Yes. DM&E is ISO 9001:2015 and AS9100D certified, with JCP approval, SAM approval, AWS certified welders, and Cage Code 87BF4. These credentials support work for aerospace, defense, and other regulated customers that require controlled processes, documented quality, supplier coordination, and dependable communication throughout the manufacturing program.

To request a quote, provide drawings, CAD files if available, material requirements, quantities, tolerances, finish specifications, inspection needs, and delivery expectations. The DM&E team reviews the full scope, including machining, fabrication, coating, plating, heat treat, and inspection requirements. A complete review helps identify the most efficient production plan and avoid scope gaps before work begins.