Swiss CNC Machined Pins

Swiss CNC machined pins are high-precision cylindrical components produced on sliding-headstock automatic lathes. Backed by our in-house fleet of multi-axis Citizen and Tornos Swiss CNC lathes, this manufacturing setup handles bar diameters up to 32mm for parts requiring high length-to-diameter ratios, tight concentricity, and complex secondary milling features. The guide bushing supports the material directly at the cutting point, eliminating deflection during deep turning operations.

Tight Diametrical Tolerances: Maintained down to +/- 0.005 mm via sliding headstock design and rigid guide bushing clamping.

Exceptional Repeatability: Automated bar feeders and simultaneous main/subspindle machining ensure stable dimensions across production runs exceeding 50,000 units.

Complex Geometry Integration: Multi-axis live tooling enables cross-holes, flats, eccentric grooves, and internal threads machined in a single clamping operation.

Deflection Control for Slender Parts: Rigid bar support prevents workpiece bending on pins with length-to-diameter ratios exceeding 10:1.

Controlled Surface Finish: Achieves Ra 0.2 um directly from the machine, minimizing secondary polishing steps.

Automotive: Actuator pins, fuel injection components, sensor housings, ABS valve spools.

Medical: Bone screws, surgical instrument shafts, orthopedic implant pins, dental drill components.

Aerospace: Control linkage pins, avionics fasteners, hydraulic valve pins.

Automation & Robotics: Precision guide pins, encoder shafts, actuator shafts, dowel pins.

Electronics & Telecommunications: Connectors, micro-pins, standoff fasteners, RF shielding pins.

Industrial Equipment: Hydraulic spool valves, pneumatic cylinder pins, specialized fasteners.

Metals Processed:
Stainless Steel: AISI 303, 304, 316/316L, 416, 17-4PH

Carbon & Alloy Steel: 12L14, 1045, 4140, 8620

Aluminum: 6061-T6, 7075-T6, 2024

Brass & Copper: C36000 (Free Cutting Brass), C11000 Copper

Titanium: Grade 2, Grade 5 (Ti-6Al-4V)

Surface Treatments Available:

• Passivation (ASTM A967 / QQ-P-35 for stainless steel)
• Anodizing (Type II and Type III Hardcoat, Clear or Color)
• Electroless Nickel Plating (ENP)
• Zinc Plating (Clear, Yellow, Black trivalent chromate)
• Black Oxide / Heat Treatment (Carburizing, Quenching, Annealing)

Drawing & CAD Review: Submit 2D drawings (PDF/DWG) with GD&T callouts and 3D models (STEP/IGES). Engineering team evaluates DFM (Design for Manufacturing) within 24 hours.

Custom Dimensions: Diameter, overall length, step diameters, undercuts, chamfers, and thread pitches manufactured to exact print specifications.

Tolerance Alignment: Standard tolerances of +/- 0.01 mm or high-precision tight tolerances down to +/- 0.005 mm.

Material Certification: Full Mill Test Reports (MTR) provided for material traceability, conforming to RoHS and REACH standards.

Volume Flexibility: Rapid prototyping runs (from 10 pieces) through to high-volume mass production (100,000+ units per batch).

Operations and quality management strictly align with ISO 9001 standards to maintain end-to-end process control:

Coordinate Measuring Machine (CMM): Used for complex 3D profile measurement and geometric dimensioning verification.

Dimensional Inspection: Optical comparators, micrometer sets, plug gages, and thread plug/ring gages checked periodically during production.

Surface Roughness Testing: Portable surface profilometers measuring Ra values against specified print thresholds.

Material Inspection: PMI (Positive Material Identification) spectrometer verification for incoming raw bar stock.

Final Inspection: 100% sorting or AQL 1.0 sampling per customer sampling plan prior to shipment; dimensional inspection report (DIR) and Material Certs included with shipment.

Protective Packaging: Individual slot trays, anti-corrosion VCI bags, or bubble wrap packaging to prevent transit damage and scratching.

Batch Identification: Barcoded labels indicating part number, revision, batch number, quantity, and manufacturing date.

Export Packaging: Double-walled corrugated master cartons secured on ISPM 15 heat-treated wooden pallets or reinforced export-grade plywood crates.

Lead Time: Prototypes delivered in 7 to 12 business days; production batches delivered in 3 to 5 weeks depending on material availability and secondary operations.

To receive an accurate quotation for your custom Swiss CNC machined pins, please provide the following details:

Part Drawing: 2D PDF drawing including dimensions, tolerances, threads, and GD&T callouts.

3D CAD File: STEP or IGES format file.

Material Grade: Specific alloy designation (e.g., SUS303, C3600, 6061-T6).

Quantity: Estimated batch size and annual usage.

Surface Finish & Secondary Requirements: Plating, passivation, heat treatment, or special packaging instructions.

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