Production machining for repeat OEM programs.
Repeat production runs require disciplined process control, stable fixturing, and predictable inspection. Northline runs production programs with documented setups, in-process checks, and SPC for qualified parts.

- Typical tolerance
- ±0.0005”
- Working envelope
- Dependent on part — full in-house capability available
- Machine platforms
- 3, 4, and 5-axis VMCs · Mazak / Okuma / Citizen turning centers
- Production
- Prototype → production
What this process is for.
Releases scheduled to OEM requirements.
Controlled tooling, fixtures, and programs preserved between runs.
Documentation packages on request — CoC, FAI, PPAP for qualified programs.
Process at a glance
- Working envelope
- Dependent on part — full in-house capability available
- Tolerances
- Project-specific · confirmed at RFQ
- Inspection
- CMM · Faro arm · optical
- Quality system
- ISO 9001:2015 · ITAR
Machines used for this work.
- 3, 4, and 5-axis VMCs
- Mazak / Okuma / Citizen turning centers
- Wire EDM and grinding for secondary work
Materials supported on this process.
- All in-house materials available
Where this capability is used.
Production Machining for Aerospace
Production Machining applied to aerospace programs — components, materials, and inspection tailored to this industry.
Production Machining for Defense
Production Machining applied to defense programs — components, materials, and inspection tailored to this industry.
Production Machining for Medical Device
Production Machining applied to medical device programs — components, materials, and inspection tailored to this industry.
Production Machining for Robotics & Automation
Production Machining applied to robotics & automation programs — components, materials, and inspection tailored to this industry.
Production Machining for Industrial Equipment
Production Machining applied to industrial equipment programs — components, materials, and inspection tailored to this industry.
Production Machining for Battery Manufacturing
Production Machining applied to battery manufacturing programs — components, materials, and inspection tailored to this industry.
Typical part types and uses.
- Repeat OEM component production
- Long-running aerospace and defense programs
- Production runs of medical components
- Industrial equipment subassemblies
How we hold and verify the part.

Tolerance approach
Production tolerance ranges qualified during PPAP / first article.
View tolerance standardsQuality & documentation
- SPC available on critical features
- PPAP documentation available
- Lot traceability available
Related capabilities.
Prototype Machining
Prototypes are programmed, fixtured, and inspected the same way production parts are — so the path from a first article to a qualified production program is short, predictable, and well-documented.
CNC Milling
Production milling on Haas VF-series equipment with documented setups, in-process inspection, and DFM review on every quoted program — prototype through long-running OEM production.
Inspection & Metrology
Inspection is integral to manufacturing — not a checkpoint after the fact.
Engineering FAQs
The questions engineering and procurement teams ask most often before a first quote.
What production volumes do you support?
From small batch repeat orders to multi-thousand-piece annual programs. Volume affects equipment selection and quoting — discuss expected EAU at RFQ.
Can you handle blanket releases or scheduled production?
Yes. Scheduled releases are common for OEM programs and reviewed during contract setup.
Do you provide PPAP?
Yes — Level 3 PPAP is available for qualified production programs.
Have a part ready for production machining?
Upload your CAD files or drawings — our engineering team reviews and responds within one business day.