BZ Metal Products can achieve tight tolerances for aluminum CNC machined parts. Our standard tolerance for most features is ±0.05mm (±0.002"). For critical features requiring even higher precision, we can achieve tolerances as tight as ±0.025mm (±0.001").

The achievable tolerance depends on several factors, including:

• Part geometry and complexity
• Feature size and location
• Specific aluminum alloy being machined
• Overall part dimensions

Our team will review your design and specifications to confirm achievable tolerances for your specific project.

We offer a variety of surface finishes for aluminum CNC machined parts:

• As-machined: Standard finish directly from the CNC machine
• Bead blasting: Creates a uniform matte finish, ideal for removing tool marks
• Anodizing (Type II): Decorative finish available in various colors with moderate corrosion protection
• Anodizing (Type III/Hard): Creates a harder, more wear-resistant surface with excellent corrosion protection
• Powder coating: Provides a durable, colored finish with good impact resistance
• Electropolishing: Creates a smooth, reflective surface by removing a thin layer of material
• Black oxide: Produces a black surface with minimal dimensional change
• Passivation: Enhances corrosion resistance without changing dimensions
• Brushed finish: Creates a directional, satin-like appearance
• Mirror polishing: Produces a highly reflective, mirror-like finish

Our finishing experts can recommend the optimal surface treatment based on your application requirements and aesthetic preferences.

BZ Metal Products has no minimum order quantity for aluminum CNC machined parts. We specialize in both prototyping (as few as 1-5 parts) and production runs (hundreds or thousands of parts). Our manufacturing setup is optimized to accommodate orders of any size efficiently.

For larger production runs, we offer volume discounts that can significantly reduce per-unit costs. We're happy to provide quotes for different quantities to help you determine the most cost-effective approach for your project.

Quality assurance is foundational to our manufacturing process. We implement several measures to ensure consistent quality:

• ISO 9001 Certification: Our quality management system is ISO 9001 certified, ensuring consistent processes.
• Inspection Equipment: We use advanced CMMs (Coordinate Measuring Machines), optical measurement systems, and precision hand tools for dimensional validation.
• Material Certifications: All aluminum materials come with certification documents verifying their composition and properties.
• First Article Inspection: Initial parts undergo comprehensive inspection before production runs begin.
• In-process Checks: Multiple quality checks during the manufacturing process catch any deviations early.
• Final Inspection: Every part undergoes final inspection before shipping.

For specialized requirements, we can also provide customized inspection reports and measurement data with your order.

Our standard lead time for aluminum CNC machined parts is 7-10 business days, which includes:

• Design review and DFM feedback (1-2 days)
• Material procurement (if necessary)
• CNC programming and setup
• Machining
• Any post-processing or surface finishing
• Quality inspection
• Packaging and shipping

For urgent projects, we offer expedited services that can reduce lead times to as little as 3-5 business days, depending on complexity and quantity. Very large production runs may require additional lead time.

When you request a quote, we'll provide an accurate lead time estimate based on your specific project requirements and our current production schedule.