Precision CNC Machining Services For Black Oxide Steel Instrument Parts

15+ Years of Experience on CNC Machining:

With 15+ years in custom CNC precision machining services, JINGXIN has honed expertise in crafting steel instrument parts—specializing in black oxide treatment to enhance their durability, corrosion resistance, and aesthetic fit for precision instruments. Located in Dongguan City, China, our professional team adopts rational manufacturing processes, targeted solutions, and meticulous workmanship to supply high-quality one-stop custom CNC precision machined parts. These include black oxide steel components for instruments, alongside parts made of stainless steel, aluminum, iron, and more.

We Focus on:

Custom non-standard CNC precision machining services & milling parts, with a strong focus on black oxide steel instrument parts—designed to meet the strict precision and appearance demands of instrument applications. Common examples include:

• Instrument housings and panels (black oxide finish resists fingerprints and minor scratches, maintaining a clean look)

• Control knobs and adjustment shafts for measuring devices (black oxide adds mild corrosion resistance without compromising dimensional accuracy)

• Internal structural brackets for analytical instruments (steel strength paired with black oxide’s anti-rust property ensures long-term stability)

Our product scope also covers fittings, valves, hydraulic components, electric motor parts, transmission and pump parts, sprocket wheels, wear parts on packing machines, and electronic and medicinal pieces.

Our Advantage:

1.Advanced Equipment: We operate a world-class facility equipped with a variety of precision CNC machines (Brother, HAAS, Mazak), vertical milling centers, and precision milling and turning lathes (including 3-axis, 4-axis, and 5-axis models). Our CNC machines are optimized for the tight tolerances required by instrument parts—achieving dimensional accuracy down to ±0.003mm to ensure compatibility with delicate instrument assemblies. We also have in-house black oxide treatment equipment, which creates a uniform, thin (2-5μm) oxide layer on steel parts—avoiding dimensional changes that could disrupt instrument fit.

2.Complete Machining Capability In-House: We adhere to the ISO 2768-F/M machining standard for tolerances, producing parts in a wide range of sizes and complexities—from small black oxide steel instrument knobs to large structural frames. For instrument parts, our process integrates precision machining and post-treatment checks: ensuring black oxide finish uniformity and verifying that the coating does not affect critical assembly dimensions. Maximum CNC milling capability is detailed in the list below.

3.Raw Material: We guarantee 100% compliance of all materials with RoHS standards and your design specifications. For black oxide steel instrument parts, we select low-to-medium carbon steel grades (e.g., 1018, 45#) that respond well to black oxide treatment—forming a stable, adherent finish while retaining the strength needed for instrument components. We provide material certificates, SGS reports, and black oxide coating test reports (verifying adhesion and corrosion resistance) upon request. Our material range also includes stainless steel, aluminum, titanium, and engineering plastics (e.g., PEEK, PC, POM); more details refer to the list below.

4.Order Quantity: We accept orders starting from 1 unit, supporting both short-run precision CNC milling & turning and large-volume production—whether you need a small batch of custom black oxide steel instrument brackets for prototyping or mass-produced control shafts for full-scale instrument manufacturing.

5.Quick Turnaround: We provide quotes within hours and fast delivery in days, backed by a skilled and professional R&D team. Even with the black oxide treatment step (critical for instrument part durability), we streamline workflows to align with your instrument production schedule.

6.Our Customers: Our customers are from the EU and North America, many operating in the scientific instrument, medical device, and industrial measurement sectors. They rely on our black oxide steel instrument parts for their precision fit, corrosion resistance, and professional appearance—all essential for high-performance instruments.

Quality Assurance:

What we do to ensure you receive high-quality CNC Precision Machining parts from JINGXIN: We declare here that we will be responsible for our precision machined parts at all times—especially for black oxide steel instrument parts, where accuracy and finish directly impact instrument functionality and lifespan.

1.100% inspection before shipping: For black oxide steel instrument parts, we conduct specialized tests—including dimensional checks with coordinate measuring machines (CMM) to confirm instrument-grade precision, adhesion tests (tape test) to verify black oxide coating stability, and visual inspections to ensure uniform finish. An inspection shipment report for each piece of precision CNC milling part is available. We implement ISO quality control throughout the whole production process, from steel material incoming checks to black oxide final inspection.

2.We have served Volvo Auto Corp since 2016 as an approved precision CNC milling company in China (supplying high-precision auto parts), and we also have a 4-year+ track record of providing black oxide steel parts to EU-based scientific instrument manufacturers—with no complaints about precision, finish, or corrosion resistance so far.

3.In case any precision machined part (including black oxide steel instrument parts) is outside tolerance, has defective black oxide coating, or fails to meet your special specifications, we will remake and deliver them as fast as we can, 100% free from our side.

4.Over the past years, JINGXIN CNC Milling Company has manufactured thousands of pieces of precision CNC machined components for our customers—including tens of thousands of black oxide steel instrument parts. The 99.9% satisfaction feedback (especially regarding how our parts integrate seamlessly into precision instruments) drives us to supply more quality precision machined parts to meet customer's request.

JINGXIN was founded in 2015 to serve the growing market of Custom CNC machining parts for the Automotive industry, Car production line special equipment market, primarily for Industry, Power generation, Automotive equipment, Lightning, Appliances, Medical equipment and Tool sector. JINGXIN Offer its professional CNC manufacturing services (CNC machined parts) to top-rated international clients, primarily for export to the USA and EU countries. JINGXIN has been able to maintain, expand and diversify its prestigious international clients with its excellent quality of products. JINGXIN is located in Dongguan China. Which is named world-class manufacturing city. With a factory of over 2000 square meters.

we are trusted by most famous clients such as BMW(Germany), VOLVO (Sweden), NFL(USA), etc.

150+ skilled workers inside, especially 20+ experienced engineers, as well as well-trained international sales staff, they are combined into a team group one by one. All of your project’s details & questions can be quickly and professionally feedback.

JINGXIN offers three main manufacturing processes:

3/4/5 Axis CNC milling services   (CNC machining work range maximum 2000.00 with accuracy +/-0.001mm)

CNC turning services 

Customized manufacturing per design (sheet metal, welding, assembly.etc )

JINGXIN Advantage & Clients Benefits

• Increase your production levels with more competitive costs. By adopting advanced CNC machines, other equipment, and ISO 9001 quality control system, you control costs and turnaround times, and you can also afford some flexibility as opposed to outsourcing the work.
• Meet the needs of your industry. For that reason, our high-quality custom manufacturing services produce outcomes that apply to industrial standards.
• No need for more vendors or outsourcing. We are your one-stop-shops for CNC Rapid Prototyping, Vacuum Casting, CNC Machining services, Plastic injection molding and Tooling, Sheet Metal Fabrication etc.
• Short-run production or 10000+ production. Applications include parts for Auto parts, medical, industry.
• Typical tolerance range from +/- 0.01mm-0.05mm;
• The Fast lead time within 10-15 working days.