Precision manufacturing for critical OEM programs.
Operating from the Elk Grove Village industrial corridor, Northline supports aerospace, medical, battery manufacturing, and industrial OEMs with precision CNC machining, Wire EDM, surface grinding, inspection, and engineering support. Upload your CAD files; our engineering team reviews every project and responds within one business day.
ISO 9001:2015 | AS9100D | ITAR Registered
Certifications + Compliance- 28 yrs
- OEM programs
- 46
- Team on the floor
- 42,000 ft²
- Elk Grove Village, IL
- ±0.0002"
- Repeatable tolerances
Core manufacturing capabilities.
Northline supports prototype through production across multiple precision manufacturing processes — documented setups, in-process inspection, and engineering review on every program.
5-Axis CNC Milling
Simultaneous 5-axis machining of complex, multi-sided geometries in a single setup. Ideal for aerospace structures, medical instruments, and high-precision robotics components.
- Simultaneous 5-axis machining
- Tight tolerances to ±0.0005"
- Prototype through production
- Complex contoured geometries
- Aerospace-grade quality systems
- In-process probing and verification
Typical Materials
Aluminum · Stainless Steel · Titanium · Inconel
Machine Platforms
- HAAS UMC-750
- DMG MORI DMU 50
- Mazak VARIAXIS i-600
Built for regulated, high-reliability programs.
We partner with engineering and procurement teams across industries where documentation, tolerance control, and repeatable process matter.
Aerospace
Structural and system-critical components with documented inspection and traceability.
Medical Device
Prototype and production parts with clean documentation and controlled material lots.
Defense
ITAR-registered manufacturing of mission-critical parts with secure supplier handling.
Robotics & Automation
Housings, drive components, and end-of-arm tooling from prototype to production.
Battery Manufacturing
Fixtures, electrode tooling, and precision equipment components for battery programs.
Industrial Equipment
Repeat-production components for OEM programs requiring consistent process control.
Material expertise across the full OEM range.
From standard aluminum and stainless to exotic alloys for aerospace and high-temperature programs.
| Material | Grades | Typical Applications | |
|---|---|---|---|
| Aluminum | 6061-T67075-T6512024-T3 | Prototype to repeat OEM production. | View |
| Stainless Steel | 30431617-4 PH | Corrosion-resistant components for medical and fluid systems. | View |
| Titanium | Ti-6Al-4V (Grade 5) | Strength-to-weight applications in aerospace and medical. | View |
| Inconel | 625718 | High-temperature and corrosion-resistant components. | View |
| Tool & Carbon Steel | A2D21018 | Tooling, fixturing, and mechanical components. | View |
| Engineering Plastics | PEEKDelrin / AcetalPTFE | Wear, chemical, and biocompatible applications. | View |
A facility built for repeatable production.
Multi-axis machining, turning, Wire EDM, grinding, and dedicated inspection under one roof. Programming in Mastercam & SolidWorks with DFM review on every quoted program.
| Haas UMC-750 | 5-Axis VMC | 30 × 20 × 20" |
| Haas VF-4SS | 3-Axis VMC | 50 × 20 × 25" |
| Mazak QT 250MSY | Turning Center | Ø 12.6" × 25.5" |
| Okuma LB3000 EX II | CNC Lathe | Ø 12.6" × 39" |
| Citizen L20 | Swiss-Type Lathe | Ø 20 mm bar |
| Mitsubishi MV2400S | Wire EDM | 24 × 16 × 12" |
| Okamoto | Surface Grinder | Class flatness |
| Zeiss Contura | CMM | Dimensional inspection |
How we prove
the part holds spec.
Quality is managed through documented inspection procedures, in-process checks, and final verification. We provide the documentation procurement teams need to qualify the part.
- 01
ISO 9001:2015 + ITAR
Quality management system maintained to ISO 9001:2015 and registered for ITAR-controlled programs.
- 02
Documented inspection
Zeiss Contura CMM, Faro portable arm, and optical comparator with in-process and final verification.
- 03
Documentation on request
First Article Inspection, Certificates of Conformance, material traceability, and PPAP for qualified programs.
- 04
Tolerance control
Closed-loop process control on production runs with SPC available for repeat-volume OEM programs.
Case study — Coming Q4 2026.
This section is reserved for a documented case study covering challenge, material, capabilities applied, tolerance and quality requirements, inspection process, and outcome. Once a project is cleared for publication, it appears here.
Browse case studies- Challenge
- Not Provided
- Material
- Not Provided
- Capability
- Not Provided
- Tolerance
- Not Provided
- Outcome
- Not Provided
Ready for a
manufacturing quote?
Upload your CAD file, drawing, sketch, or specifications. Our engineering team reviews requirements and responds within one business day with next steps.
- 24-hour RFQ review on complete packages
- DFM feedback included with every quote
- NDA available before detailed discussion
- Confidential file handling
Engineering references — coming soon.
Practical guides for engineers and procurement teams evaluating manufacturing options.
CNC Machining Design Guide
Wall thickness, internal radii, hole geometry, and feature limits for cost-effective machining.
Coming soonMaterial Selection Guide
Comparing aluminum, stainless, titanium, and engineering plastics by application.
Coming soonTolerance Reference
Standard, precision, and ultra-precision tolerance ranges by process.
Coming soonRFQ Checklist
Everything procurement and engineering should include for an accurate quote.
Coming soon
Have a part ready for review?
Upload your CAD files or drawings and our engineering team will review the project requirements.