CNC Precision Machining Service in San Bernardino

Douglas Machine & Engineering machines components to precise tolerances ranging from +/-.005 to +/-.0005, depending on the material, geometry, feature size, and production requirements. Our team reviews drawings before production to confirm achievable tolerances, inspection strategy, tooling needs, and any finish or heat-treat factors that may affect final dimensions.

Yes. DM&E serves aerospace and defense customers with ISO 9001:2015 and AS9100D certified quality systems, JCP and SAM approvals, Cage Code 87BF4, and AWS certified welders. We also support first article inspection reporting, dimensional verification, documentation packages, and coordinated supplier processes for regulated manufacturing programs.

Yes. DM&E is positioned as a one-stop manufacturing partner, managing CNC machining, fabrication, welding, inspection, powder coating, plating coordination, heat treat coordination, and project delivery. This approach reduces transportation costs, minimizes the need for multiple purchase orders, and keeps accountability centralized through one project management team.

Douglas Machine & Engineering supports industrial, aerospace and defense, pharmaceutical, agricultural, robotics, food-grade packaging, and construction customers. Capabilities are well suited for precision components, structural fabrications, fixtures, tooling, automation-related parts, and assemblies that require reliable quality control, documented processes, and on-time performance.

Yes. Inspection support can include first article inspection reporting, CMM analysis through Exact Metrology, dimensional verification on certified granite tables, gauge checks, and quality documentation. The required inspection package is typically defined during the drawing review stage so production and verification align with customer specifications.

DM&E has capabilities for machining components up to 20,000 pounds and fabricating structural assemblies up to 20 tons. Large-part work is reviewed carefully for lifting, fixturing, tolerance, access, weldment stability, and inspection requirements to ensure the production plan is practical before work begins.

To request a quote, provide drawings, CAD files if available, material requirements, quantities, tolerances, finishes, inspection needs, and target delivery dates. The DM&E team reviews the scope, identifies manufacturing and supplier coordination needs, and prepares a response based on the program’s technical requirements and production pathway.

Yes. DM&E operates an in-house paint and powder coating facility with blast preparation capabilities and thermoset powder finishes including epoxy, polyester, nylon, polyurethane, and metallics. Plating and heat treat services are coordinated through qualified partners when specifications require corrosion resistance, conductivity, hardness, strength, or wear performance.