ISO 9001 & IATF 16949 CERTIFIED

Custom Screw Machine Parts Manufacturer

Yueyi Precision manufactures custom screw machine parts for OEM production using Swiss CNC turning and precision turning processes. We produce shafts, bushings, pins, threaded components, fittings, spacers, and other small-diameter parts in aluminum, stainless steel, brass, titanium, alloy steel, and engineering plastics. With in-house machining and dimensional inspection, we support prototypes through high-volume production while maintaining consistent tolerances, surface quality, and lot-to-lot repeatability.

About Yueyi Precision

Why Swiss Machining Works Well for Small-Diameter Screw Machine Parts

Conventional CNC turning can become less stable when machining long, slender parts because cutting forces may cause workpiece deflection. Swiss-type machining supports the bar close to the cutting zone with a guide bushing, helping maintain dimensional consistency on small-diameter components with higher length-to-diameter ratios.

Our Swiss CNC lathes combine turning, drilling, milling, threading, and other operations in a single setup, making the process well suited for custom screw machine parts such as shafts, pins, bushings, threaded fittings, spacers, and precision connectors. Critical dimensional tolerances down to ±0.005 mm can be evaluated based on part geometry, material, and production requirements.

Swiss Machining Capabilities for Screw Machine Parts

Parameter Range / Capability
Diameter capacity 0.5 mm – 32 mm (0.020” – 1.260”)
Typical Part Types Shafts, pins, bushings, fittings, spacers, threaded parts
Critical Tolerance Down to ±0.005 mm, depending on geometry and material
Surface Finish Ra 0.8–1.6 μm typical
Operations Turning, drilling, milling, threading
Materials Aluminum, stainless steel, brass, titanium, alloy steel, plastics
Production Volume Prototype to high-volume production
Inspection CMM / optical

Critical dimensional requirements are evaluated according to part geometry, material, and production volume. See our CNC machining tolerance standards for additional guidance.

Materials for Custom Screw Machine Parts

Material selection for custom screw machine parts affects machinability, tool life, surface finish, corrosion resistance, strength, and production cost. Yueyi Precision machines common bar-stock materials including brass, stainless steel, aluminum, alloy steel, titanium, and engineering plastics. Our engineers review part geometry, tolerance requirements, production volume, and end-use conditions to help determine a suitable material and machining approach for each project.

Brass screw machine parts

C360 brass offers excellent machinability and is well suited for fittings, electrical contacts, valve components, threaded inserts, and other high-volume turned parts. Its conductivity, corrosion resistance, and clean machining characteristics make it a practical choice for many precision screw machine applications.

Stainless screw machine parts

Stainless steels such as 303, 304, and 316L are commonly selected for screw machine parts requiring strength, corrosion resistance, and dimensional stability. Typical applications include precision shafts, threaded fittings, bushings, sensor components, and industrial connectors.

Aluminum screw machine parts

6061 and 7075 aluminum fit lightweight, heat-conductive sensor and RF housing components with high Swiss machining throughput. We supply matched anodizing finishes. Visit our aluminum CNC machining hub for material and finishing guides.

Material comparison table:

Material Key Properties Typical Applications Machinability Rating
Brass C360 Excellent corrosion resistance, good conductivity, bright finish Water meters, air valves, electrical connectors 100% (baseline)
Stainless 303/304 High strength, good corrosion resistance, non-magnetic Sensor housings, marine hardware, industrial couplings 60-70%
Stainless 316L Superior chemical & salt-water resistance Chemical injection fittings, medical components 50-60%
Aluminum 6061 Lightweight, good anodizing response, low cost Electronic enclosures, hydraulic manifolds 150-200%
Aluminum 7075 High strength High-load automotive brackets, robotics arms 100-120%
Steel 12L14 Free-cutting, cost-effective Shafts, spacers, fasteners 80-90%

After machining, we can coordinate certified secondary processes including passivation, zinc plating, and black oxide. Material certificates remain fully traceable and are supplied with each shipment when required.

Automotive Swiss Screw Machine Parts – Built for Long-Term Reliability

Automotive hardware demands strict dimensional repeatability, burr-free threads and stable performance amid vibration, temperature swings and corrosive conditions. Our Swiss screw machining fabricates ultra-precise batch parts for fuel systems, brake assemblies, steering units, transmission valves and EV sensor housings with consistent quality. Learn more about our automotive CNC machining solutions.

Examples of Typical Automotive Swiss Machined Components

Fuel injector nozzles

stainless 303, micron-level precision orifice

Brake bleed screws

brass C36000, 10-micron sealing surface finish

ABS sensor rings

stainless 316L, concentricity less than 0.01 mm

Threaded studs and spacers

aluminum 6061 / free-cutting steel 12L14

We serve Tier-1 auto suppliers and aftermarket manufacturers with complete PPAP Level 3 packages, covering control plans, process capability studies and full dimensional inspection reports. Kanban stock management and JIT shipment stabilize your production lines and cut warehousing expenses. Send us your CAD drawings for a free DFM review and competitive quotation.

What Makes Us Different – Factory Direct, Quality Driven

Supplier consistency is often determined by process control rather than machining alone. When heat treatment, surface finishing, or inspection are outsourced to multiple vendors, lead times and dimensional consistency can become difficult to manage. By keeping production and quality management under one coordinated workflow, we provide better traceability, faster communication, and more predictable delivery. Learn more about our quality control process

Manufacturing Capacity & Technical Resources

17 years of experience in precision screw machining

50+ engineers and technical staff

12 Swiss CNC lathes (Japanese Star and Swiss-type machines)

4 additional conventional CNC lathes for larger diameters

CMM inspection

2 optical sorters for high-volume automated inspection

ISO 9001:2015 certified since 2012

Automated bar feeders for continuous lights-out production

Process Quality & Inspection System

First-article inspection with full dimensional reporting

In-process sampling every 200 pieces or per AQL requirement

Final CMM inspection for critical dimensions with 0.005 mm resolution

Material certificate available upon request

Pricing & lead time – direct buying cuts cost: Per-piece pricing 15–20% below trading companies. Standard lead time 3–4 weeks; expedite 1–2 weeks for repeat orders.

No hidden fees – our quote includes: programming & setup (one-time per part number), standard tooling (most absorbed), first-article inspection report (free), and packaging. No surcharges.

Start Your Swiss Screw Machining Project with Engineering Validation

In precision manufacturing, early-stage manufacturability evaluation is often more critical than final pricing. Small design decisions—such as wall thickness, thread geometry, or tolerance selection—can significantly impact machining stability, production cost, and long-term consistency in high-volume manufacturing.

To reduce downstream manufacturing risk, we begin every project with a structured engineering review based on your drawings or existing parts.

Review manufacturability within 24 hours

Suggest material and tolerance optimizations – down to 0.005 mm if needed

Provide a fixed price with lineitem breakdown

Deliver first articles as fast as 5 business days

Engineering Review Process (24 Hours)

Evaluate manufacturability for Swiss machining processes

Identify potential design risks affecting precision or stability

Suggest material alternatives and tolerance optimization down to 0.005 mm capability where applicable

Provide a structured manufacturing approach based on production efficiency

To better understand our machining precision across different production requirements, you can review our surface finish capabilities

Ready for a quote? 

People Also Ask

Q: What are screw machine parts?

A:Small precision components from automatic lathes. Pins, valves, threaded inserts. We make screw machine parts in brass, stainless, aluminum – complete in one setup.

A: Head, shank, threads, pitch, tip. For custom screw machine parts, we control all these features on Swiss CNC lathes.

A: Pan head, flat head, socket head, button head, set screws. We supply stainless screw machine parts, brass screw machine parts, and aluminum screw machine parts in all these types.

A: Wood screw, machine screw, selftapping screw, set screw, shoulder screw, eye screw, thumb screw, captive screw, concrete screw, micro screw. All as CNC Screw Machined Parts.

A: #4 screw has 0.112″ diameter, common in electronics. Our Swiss machining produces precision screw machine parts down to #0 with full thread inspection.

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ADDRESS

NO.22,You Yi Road ,Wulian Community, LongCheng Street ,Long gang District ,Shen Zhen

Email

icey@yueyiprecision.com