Dongguan Ganyuan Hardware Technology Co., Ltd. specializes in CNC machining of precision hardware components. Our 304 stainless steel terminals are a core product for new energy vehicles. Serving new energy vehicle manufacturers, wiring harness manufacturers, and high-voltage connector manufacturers, we rely on CNC lathes, four-axis and five-axis machining centers, and automated production lines with milling and turning machines. We strictly adhere to the ISO9001 quality management system and can undertake non-standard customization based on drawings and samples, balancing small-batch prototyping with large-scale automated mass production delivery.
The outer diameter, internal thread, and positioning groove of stainless steel terminals require extremely high precision. Thread profile and coaxiality directly affect the tightness and conductivity stability of wiring harness connections. Our factory has built a complete CNC machining cluster:
Production utilizes programming simulation and toolpath pre-planning, completing the entire process of turning the outer diameter, boring the inner hole, precision tapping, and milling the positioning groove in a single setup. Machining accuracy can reach ±0.005mm, increasing production efficiency by 30% compared to ordinary lathes.
Multi-axis linkage equipment integrates multi-stage steps and internal threads, avoiding coaxiality deviations caused by multiple clamping operations. It overcomes the processing challenges of stainless steel materials sticking to the cutting tool and easily damaged threads, ensuring uniform dimensional accuracy in every batch of terminals.
304 Stainless Steel Terminals -Exquisite Precision Machining on an Automatic Lathe
Complete Production Process
Bar Blanking: 304 stainless steel solid bars are selected and automatically cut to length using CNC, ensuring uniform blank specifications.
CNC Precision Turning: Two-stage stepped outer diameter is machined, with strict control over outer diameter tolerances to ensure smooth insertion and fit.
Precision Boring and Tapping: Internal holes and threads are precision machined, resulting in complete, burr-free teeth and tight thread engagement.
Milling and Positioning Openings: Side anti-rotation grooves are machined to prevent stainless steel terminals from rotating and loosening after assembly.
Surface Deburring and Polishing: Burrs are removed from the cutting edges to ensure a smooth terminal surface without scratching the wire harness insulation layer.
Full-Dimensional Factory Inspection: Threads are inspected using go/no-go gauges, and outer diameter and coaxiality are verified using calipers and roundness testers.
Four Core Advantages of Stainless Steel Terminals
304 Stainless Steel Base Material: Corrosion-resistant and Durable Made of virgin stainless steel, these terminals are oxidation-resistant and salt spray-resistant, preventing rust even in the humid and high-temperature environments of automotive engine compartments, ensuring long-term stable connections for high-voltage wiring harnesses.
Precision Dimensions, Seamless Assembly: Strict control over outer diameter, internal thread, and slot tolerances ensures smooth mating between male and female terminals, with no play, and a secure, non-loose lock, guaranteeing reliable circuit connections.
Full Thread Formation, Stable Conductivity: CNC precision tapping results in complete and smooth threads with a large contact area, stable current conduction, and minimal heat generation, making them suitable for high-voltage wiring harness connection conditions in new energy vehicles.
Flexible Customization: The outer diameter, length, thread specifications, and opening structure of the stainless steel terminals can be freely adjusted. Stepped terminals, butt terminals, and high-voltage wiring harness connection terminals can be produced as needed.
The company has passed GB/T19001-2016 (ISO9001:2015) quality management system certification, establishing an automotive-grade closed-loop quality inspection process:
Raw materials undergo material spectral testing upon arrival; automated inspection is performed on turning and tapping processes; finished products are inspected batch by batch for thread go/no-go, outer diameter accuracy, and burr appearance, eliminating defects such as stripped threads, dimensional deviations, and sharp cutting edges, meeting the stringent standards for new energy vehicle wiring harnesses.
Precision threads and outer diameters are highly susceptible to damage from impacts. Stainless steel terminals are first placed in anti-static plastic bags, then individually packaged into molded pearl cotton slots, and finally reinforced with thickened cardboard boxes. For large-volume export orders, solid wood crates can be added, supporting domestic land transportation of complete vehicles and ocean shipping, providing multi-layer protection to prevent thread impacts and surface scratches.
Ganyuan Hardware offers customizable 304/316 stainless steel terminals, high-voltage connector copper terminals, stepped mating nuts, and slotted terminals, supporting large-scale mass production on automatic lathes. We continuously upgrade our automated milling and turning production lines, strictly controlling micron-level dimensional tolerances to provide corrosion-resistant, high-precision, and reliable stainless steel precision terminals for new energy vehicle, energy storage equipment, and industrial wiring harness manufacturers.
Q1: Where can I get product & price information?
A1: Send us an inquiry e-mail, we will contact you once we received your mail.
Q2: How long will I get the sample?
A2: Depends on your specific items, within 3-7 days generally.
Q3: What kinds of information do you need for a quote?
A3: Kindly please provide the product drawings in PDF, if provide in STEP or IGS will be better.
Q4: What are the payment terms?
A4: We accept 50% as a payment deposit, when the goods are prepared, we shoot photos or videos for your check, and then you can pay the balance. For small quantities, we accept Paypal, the commission will be added to the order. For big amounts, T/T is preferred.
Q5: How to deliver the goods?
A5: We deliver the products by courier company.
Q6: Are you a trading company or factory?
A6: We are factory direct with 17 experienced engineers and more than 50 employees as well approximate 3,000m2 workshop area.
Q7: What shall we do if we don't have drawings?
A7: Please send your sample to our factory, then we can copy and provide you better solutions. If send us pictures or drafts with dimensions(Length, Height, Width), CAD or 3D file will be made for you.
Q8: Can we get some samples before mass production?
A8: Absolutely yes.
Q9: Will my drawings be safe after sending them to you?
Q10: Is it possible to know the operation status of my products without visiting your company?
A10: We will offer a detailed production schedule and send weekly reports with digital pictures and videos which show the machining progress.
