CNC Multi-Hole Machined Parts

Custom CNC multi-hole machined parts are precision-engineered components requiring multi-axis drilling, reaming, tapping, and counterboring across single or multiple planes. Built for assemblies demanding strict geometric alignment and inter-feature positional accuracy, these components are produced in our ISO 9001-certified facility using advanced 4-axis and 5-axis CNC machining centers. By executing complex hole patterns in single setups, our manufacturing process eliminates multi-positioning errors to ensure strict concentricity, coaxiality, and perpendicularity.

Dimensional Accuracy: Maintains strict linear and radial tolerances down to +/- 0.005 mm across multi-feature components.

Simultaneous 5-Axis Setup: Eliminates multi-repositioning errors, ensuring strict geometric alignment and consistent part-to-part dimensions across production runs.

Complex Hole Integration: Combines intersecting cross-holes, deep-hole drilling, counterboring, and custom internal threading in a unified operation.

Optimized Batch Scalability: Quick-change fixture systems and automated toolpath programming support flexible production runs from 10 to 5,000 units.

Burr-Free Edge Quality: Controlled entry and exit tool paths prevent internal burrs and material deformation on critical mating surfaces.

GD&T Compliance: Full adherence to geometric dimensioning and tolerancing callouts for complex assembly interfaces.

Automotive: Transmission valve bodies, actuator brackets, and sensor housings.

Medical: Surgical instrument frames, diagnostic equipment manifolds, and titanium implant assembly jigs.

Aerospace: Lightweight structural brackets, fuel control valve bodies, and avionics enclosures.

Automation: Robotic arm joints, pneumatic manifold blocks, and linear guide mounting plates.

Electronics: Heat sinks with complex coolant distribution channels and chassis mounting panels.

Industrial Equipment: Hydraulic distribution blocks, gearbox covers, and high-pressure pump housings.

Material Options & Standards
Aluminum Alloys: ASTM / EN standards (6061-T6, 7075-T6, 5052)

Stainless Steels: ASTM A276 / DIN standards (304, 316/316L, 17-4PH, 420)

Alloy Steels: AISI / SAE standards (4140, 1045, 20CrMo)

Non-Ferrous Metals: Brass (C36000), Phosphor Bronze, Copper

Engineering Plastics: POM (Delrin), PEEK, Nylon 66, PTFE

Surface Finishes & Treatments
Anodizing: Clear or colored Type II; Hardcoat Anodizing Type III (MIL-A-8625)

Plating & Passivation: Electroless Nickel Plating, Zinc Plating, ASTM A967 Citric/Nitric Passivation for Stainless Steel

Coatings: Powder Coating, Chemical Conversion Film (Surtec 650 / Alodine per MIL-DTL-5541)

Mechanical Finishes: Precision Bead Blasting, Manual Edge Deburring, Vibratory Barrel Finishing

CAD File Formats: Accepts STEP, IGES, Parasolid, DXF, and 2D engineering drawings with explicit GD&T specifications.

Custom Envelopes: Tailored spatial dimensions and mounting interfaces designed to match exact customer assembly layouts.

Interface Tolerancing: Customized machining parameters for press-fit bushings, bearing journal seats, and precision O-ring grooves.

Traceable Sourcing: Direct procurement of raw materials complying with ASTM, DIN, or JIS specifications, accompanied by full Mill Test Reports (MTR).

Prototyping to Volume: Rapid prototype turnaround for functional testing followed by seamless scaling to pilot batches and full-scale production.

CMM Verification: Hexagon Coordinate Measuring Machines inspect 3D spatial coordinates, hole center distances, and complex GD&T profiles.

Precision Gauging: Calibrated micrometers, bore gauges, thread plug gauges, and ring gauges verify hole diameters, depth consistency, and thread pitch.

Surface Profiling: Portable digital profilometers measure Ra values on critical internal hole walls and mating faces.

Material Identification: PMI (Positive Material Identification) spectrometer screening verifies elemental compliance of incoming metal bars and blocks.

Traceability & Reporting: 100% dimensional screening prior to shipping, backed by optional First Article Inspection (FAI) reports and CMM data sheets.

Protective Packaging: Individual wrapping in anti-corrosion VCI (Volatile Corrosion Inhibitor) bags or custom closed-cell foam partitioning to prevent surface abrasion and transit damage.

Batch Identification: Clear barcode labeling on external packaging detailing part numbers, material batch codes, quantity, and manufacturing dates.

Export Compliance: Heavy-duty export-grade corrugated cartons or ISPM 15 compliant heat-treated wooden crates for international shipping.

Standard Lead Times: 7 to 15 business days for prototypes; 3 to 5 weeks for production batches depending on geometry complexity and required finishing.

Submit your project documentation for a formal technical review and commercial quotation within 24 hours. Ensure your RFQ includes:

Part Geometry Files: 3D CAD model (STEP/IGES) + 2D PDF drawing with GD&T callouts

Material Specification: Precise alloy grade or engineering plastic designation

Order Volume: Prototype quantity and Annual Estimated Volume (AEV)

Functional Requirements: Critical hole tolerances, mating interface constraints, and specified surface finishes

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