CNC Machining for Automotive Parts
Resolute Precision Manufacturing provides high-volume CNC turning and milling for automotive and motor vehicle parts manufacturers. Our bar-fed Swiss CNC machines, automated lathe cells, and robotic loading capability deliver production quantities of precision turned components and Automotive Machined Plastic Parts for automotive sub-assemblies direct from our ISO 9001 certified facility in Angola, Indiana, located within the Midwest automotive corridor. Request a QuoteHigh-Volume Automotive Machining
Automotive component manufacturing demands a specific combination of capabilities: high-volume production efficiency, tight dimensional consistency across production lots, material flexibility for the range of alloys and plastics used in automotive applications, and a quality system capable of supporting PPAP, APQP, and customer-specific quality requirements.
Resolute Precision’s bar-fed turning cells and automated machining systems deliver the volume and consistency that automotive programs require. Our Automotive CNC Machining Services support production control plans, FMEA documentation, first article inspection, and ongoing SPC data collection through our ISO 9001:2015 quality system. We also machine engineering plastics such as Delrin, PEEK, and nylon for applications requiring lightweight, wear-resistant, or electrically insulating components.
Our direct-manufacturer pricing model no broker, no distributor delivers the competitive per-part cost that automotive supply chains require.
Automotive Materials We Machine
We machine standard automotive alloys and engineering plastics in the volumes that automotive programs require:
Carbon steel 1018, 1045, 12L14 — high-volume turned fasteners, shafts, and sub-assembly components
Alloy steel 4140, 4340, 8620 — hardened components for powertrain, drivetrain, and chassis applications
Aluminum 6061, 7075, 2024 — lightweight structural components, housings, and sub-assemblies
Stainless steel 303, 304, 316 — corrosion-resistant components for exhaust-adjacent and underhood applications
Brass 360 — hydraulic and fuel system fittings, bushings, and connector components
Engineering plastics — Delrin, PEEK, and nylon for Automotive Machined Plastic Parts and non-metallic automotive sub-assembly components
Specifications at a Glance
| Production Capacity | 5,000 to 500,000+ parts per year on bar-fed and automated turning cells |
| Turning | Swiss CNC (20mm–38mm); bar-fed turning up to 3.2″ diameter; chucked turning up to 25.5″ diameter |
| Milling | 3, 4, and 5-axis vertical milling; horizontal 4th-axis machining; robotic automation for high-volume production |
| Automation | Bar feeders, robotic loading, and lights-out overnight production |
| Quality | ISO 9001:2015; PPAP support, production control plans, and SPC data available upon request |
| Materials | Carbon steel, alloy steel, aluminum, stainless steel, brass, and engineering plastics |
| Automotive Compliance | PPAP Level 3 support, APQP documentation, and customer-specific quality plan compliance |
| Inventory Programs | Blanket orders with scheduled releases and Just-in-Time (JIT) delivery programs |
| Location | Angola, Indiana — strategically located within the Midwest automotive supply chain corridor |
Automotive Component Types We Produce
Resolute Precision produces precision CNC machined automotive components across powertrain, chassis, body, fuel, and other vehicle system applications. Our Automotive CNC Machining Services cover both metal and engineered plastic components for production automotive programs.
Transmission and powertrain components — precision turned shafts, gears, and valve body components
Suspension and steering components — machined ball joints, tie rod ends, and steering column components
Fuel and emissions system components — precision fittings, nozzle bodies, and injector components
Brake system components — precision turned pistons, calipers, and hydraulic components
Engine components — valve guides, lifter bodies, and precision fasteners for engine assemblies
Custom automotive fasteners — specialty bolts, studs, and threaded hardware to OEM specifications
Plastic automotive components — machined Delrin, PEEK, nylon, and other engineering plastic components for non-metallic applications
Frequently Asked Questions
Q: Can RPM support PPAP (Production Part Approval Process)?
A: Yes. We support PPAP at Levels 1 through 5 as required by your program. Our standard quality documentation — dimensional results, material certifications, process flow, control plan, FMEA, and appearance approval — provides the content required for PPAP submission packages.
Q: Does RPM have experience with automotive quality standards such as IATF 16949?
A: RPM holds ISO 9001:2015 certification. We are not currently IATF 16949 certified. We operate many of the practices aligned with automotive quality expectations including production control plans, SPC, and customer-specific quality requirements. Discuss your program’s specific quality system requirements with our team.
Q: What is RPM's capacity for high-volume automotive production?
A: Our automated turning cells produce up to 500,000 parts per year on established production programs. For volumes requiring dedicated cell capacity, we discuss capacity reservation options during the quoting process for new programs.
Q: Can RPM coordinate heat treating and coating for automotive components?
A: Yes. Through our value-added services, we coordinate heat treating, grinding, black oxide, and zinc plating for automotive components — delivering finished parts ready for assembly from a single purchase order.