Precision CNC Manufacturing · Est. 1997
Precision CNC machining for critical OEM programs.
Operating from the Elk Grove Village industrial corridor, Northline manufactures components for aerospace, medical, and industrial OEMs across North America — tight tolerances, documented quality, and responsive engineering support. Upload your CAD files; we respond within one business day.
- 28 yrs
- OEM programs
- 46
- Team on the floor
- 42,000 ft²
- Elk Grove Village, IL
- ±0.0002"
- Repeatable tolerances
Capabilities
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
Industries Served
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.
Materials
Material expertise across the full OEM range.
From standard aluminum and stainless to exotic alloys for aerospace and high-temperature programs.
| Material | Grades | ||
|---|---|---|---|
| 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 |
Equipment & Capacity
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-7505-Axis VMC30 × 20 × 20"
- Haas VF-4SS3-Axis VMC50 × 20 × 25"
- Mazak QT 250MSYTurning CenterØ 12.6" × 25.5"
- Okuma LB3000 EX IICNC LatheØ 12.6" × 39"
- Citizen L20Swiss-Type LatheØ 20 mm bar
- Mitsubishi MV2400SWire EDM24 × 16 × 12"
- OkamotoSurface GrinderClass flatness
- Zeiss ConturaCMMDimensional inspection
Quality & 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.
Note: Northline does not currently claim AS9100 certification.
Featured Project
Case study — Not Provided.
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
Request a Quote
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
Technical Resources
Engineering references — coming soon.
Practical guides for engineers and procurement teams evaluating manufacturing options.
- Coming soon
CNC Machining Design Guide
Wall thickness, internal radii, hole geometry, and feature limits for cost-effective machining.
- Coming soon
Material Selection Guide
Comparing aluminum, stainless, titanium, and engineering plastics by application.
- Coming soon
Tolerance Reference
Standard, precision, and ultra-precision tolerance ranges by process.
- Coming soon
RFQ Checklist
Everything procurement and engineering should include for an accurate quote.
Start a project
Have a part ready for review?
Upload your CAD files or drawings and our engineering team will review the project requirements.