Dongguan Lanbo Electronics Technology Co., Ltd.

Custom CNC Turned Brass Flange Contact Pin

Custom CNC Turned Brass Flange Contact Pin
Part No :

Custom CNC Turned Brass Flange Contact Pin product parameters

We offer full custom CNC turning services for non-standard precision components. We manufacture lathe parts strictly according to your CAD drawings, or provide engineering design support and production arrangements based on your specific requirements.

Item	Details
Product Name	Custom CNC Turned Brass Flange Contact Pin
Manufacturing Process	CNC lathe turning, flange shoulder forming, rounded head precision finishing, end face chamfering, surface polishing, precision deburring
Materials Available	C36000 lead-free brass (standard), H59 / H62 brass; SUS304 / SUS316 stainless steel available for special requirements
Surface Treatment	Natural machined brass finish, mechanical polishing, nickel plating, tin plating, gold plating, passivation
Tolerance Standard	Dimensional tolerance ±0.01mm; strict coaxiality between flange shoulder and pin shaft; precise outer diameter fit tolerance; controlled rounded head contour accuracy
Inspection Standards	Caliper & micrometer dimension measurement, coaxiality geometric tolerance verification, surface finish & appearance inspection, all conducted under ISO quality management system
Customization Service	Custom pin diameter, overall length, flange size and rounded head specification according to customer 2D/3D drawings or physical samples; support prototype trial production, OEM & ODM mass-volume orders

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Detailed description

Custom CNC Turned Brass Flange Contact Pin

Our Custom CNC Turned Brass Flange Contact Pin is a precision conductive positioning component integrating shoulder limiting flange and rounded guiding head, designed for reliable electrical contact and accurate guiding assembly under frequent plugging working conditions. As a professional CNC turning manufacturer based in Dongguan, we produce customized brass flange contact pins with ±0.01mm ultra-precise tolerance strictly following customers’ 2D & 3D engineering drawings. We support full OEM & ODM customization for pin diameter, total length, flange dimension and head contour. These high-quality brass contact pins are widely used for connector terminals, charging contacts, fixture guiding and precision locating in electronics, new energy, automotive and precision instrumentation industries.

Introduction to CNC Lathe Turning Technology

CNC lathe turning is one of the most precise and efficient manufacturing methods for rotational metal components used in industrial automation and precision equipment. Using programmable multi‑axis turning centers, metal bars are processed through continuous cutting, facing, grooving, threading and boring with computer‑controlled accuracy.
Compared with manual machining and conventional milling, precision CNC turning achieves stable dimensional tolerance down to ±0.01mm, smooth surface quality and outstanding consistency during mass production. It is widely applied to fabricate pins, shafts, bushings, connectors and threaded parts for mold, electronics, medical, automotive and automation machinery.
Equipped with secondary milling and cutting capacity, CNC turning supports complex customized profiles including stepped cylinders, grooved structures and multi‑sided profiles, satisfying diversified precision positioning component demands for industrial equipment.

Product Definition & Industrial Value

Brass flange contact pin is a conductive positioning fitting composed of rounded guiding head, smooth cylindrical pin shaft and middle shoulder limiting flange. The rounded head realizes smooth insertion and automatic guiding alignment, the cylindrical shaft provides accurate fit positioning, and the integral flange acts as a mechanical stop to precisely control insertion depth and avoid over-assembly damage. It solves common industry pain points such as difficult alignment during plugging, unstable contact resistance and inconsistent assembly depth, giving full play to brass’s advantages of excellent electrical conductivity, corrosion resistance and good wear resistance, effectively improving contact reliability and service life for electrical connectors and precision assembly systems.

Our Product Service

We provide one-stop custom CNC turning service for brass flange contact pins for global electronics, new energy and precision instrumentation suppliers. Our product scope covers custom contact pins, guide dowel pins, locating pins and other non-standard precision turned hardware. We complete full turning, flange forming, rounded head finishing, surface polishing and deburring strictly based on customer engineering drawings. Value-added services include diversified surface treatment, full-dimension inspection, prototype sampling and large-batch OEM production.

5 Core Advantages

Integral shoulder flange for precise depth limiting

The flange shoulder is machined integrally with the pin shaft in one clamping, serving as a reliable mechanical stop during assembly to accurately control insertion depth, avoid over-pressing damage to matching parts, and ensure consistent assembly depth for each pin, improving overall assembly consistency.

Rounded guiding head for smooth plug-in alignment

The top rounded head is finished with high precision, presenting a smooth arc contour without burrs. It realizes automatic guiding alignment during insertion, reduces insertion resistance, avoids scratching the mating hole wall, and is especially suitable for frequent plugging and unplugging contact scenarios.

Premium brass base with excellent conductive performance

Adopting high-grade lead-free brass as standard material, it features excellent electrical and thermal conductivity, stable contact resistance and good corrosion resistance. It maintains stable conductive performance in conventional working environments, ideal for electrical connector terminals and charging contact components.

High coaxiality and fine surface finish

The pin shaft and flange are processed by one-time clamping with strict coaxiality control, and the dimensional tolerance can reach ±0.01mm. The surface is finely turned and optionally polished, with low friction coefficient, ensuring smooth fitting assembly and stable long-term contact performance.

Full-parameter drawing-based customization

All key parameters including pin diameter, total length, flange size and head contour can be fully adjusted according to your 2D/3D drawings or physical samples. We accept both small-batch prototype verification orders for new product development and large-volume mass production orders for formal projects.

OEM Custom Service Range

We provide comprehensive customized solutions for custom brass flange contact pins and all kinds of precision CNC turned components. Available materials include C36000 lead-free brass, H59/H62 brass, SUS304/SUS316 stainless steel and carbon steel, with sufficient bar stock to match different conductivity, strength and corrosion resistance requirements.
Our custom product range includes contact pins, guide dowels, locating pins, bushings, connecting shafts and other rotational precision machined parts. Selectable surface treatments: natural machined finish, mechanical polishing, nickel plating, tin plating, gold plating, passivation and anodizing.
We can supply single parts or matched hardware kits according to assembly needs. Custom machining will be developed based on your drawings or samples. Small batch prototype testing is available before formal mass production.

Typical Application Scenarios

Our Custom CNC Turned Brass Flange Contact Pin is widely used in electrical connector terminal contact, new energy charging contact assembly, fixture guiding positioning, mold guide component assembly, precision instrument conductive contact and electronic equipment plug-in positioning assembly.

Frequently Asked Questions

FAQ 1

Q: Can you produce custom CNC turned parts according to my drawings or samples?
A: Yes, we mainly focus on OEM & ODM customized precision turning services. We accept 2D files like PDF/DWG and 3D files such as STEP, IGES. You can also send physical samples for us to reverse-engineer and optimize the structure. Our engineering team will review your design and offer professional suggestions on cost saving and manufacturability (DFM) for free.

FAQ 2

Q: What kinds of metal materials can you use for CNC turning processing?
A: We support a full range of common precision machining metals, including SUS304/SUS316 stainless steel, 1018/1045 carbon steel, 6061/7075 aluminum alloy, C36000 brass, copper and titanium. We can select suitable raw materials based on your product usage, working environment, strength requirements and budget.

FAQ 3

Q: Can I get trial samples before mass production? How long is the sample lead time?
A: Trial samples are available for all customized turning orders. The sample production cycle is 3–7 working days after drawing confirmation. After you test and confirm the sample quality and dimensions, we will arrange mass production. Small batch trial orders are also acceptable if you do not need large volume at first.

FAQ 4

Q: What surface finishing options do you provide for CNC turned metal parts?
A: We offer multiple surface treatments to meet anti-rust, anti-corrosion, wear resistance and appearance demands: passivation, electropolishing, zinc plating, nickel plating, black oxide, powder coating, anodizing for aluminum, sandblasting and polishing. If your products are exported to Europe, we can provide surface treatment that complies with RoHS and REACH standards.

FAQ 5

Q: How do you control the dimensional tolerance of precision CNC turned parts?
A: Our standard tolerance for general turned parts is ±0.01mm, and ultra-precision components can achieve ±0.005mm with grinding processes. We carry out strict three-step quality inspection: IQC for raw material incoming check, IPQC for in-process production monitoring, and FQC full dimension testing before shipment. We provide inspection reports and accept third-party quality inspection as requested.

About our company

Dongguan Lanbo Electronic Technology Co., Ltd. (Brand: LAMBOOR) was established in 2010 with 15 years of experience in precision hardware manufacturing. We own a 3,000 sq.m standardized factory and employ over 100 professional technicians, acting as an integrated one-stop manufacturer specializing in custom precision hardware structural components, covering mold development, stamping, sheet metal, CNC turning, welding and dust-free assembly.

We are fully equipped with Jinfeng/Aomate stamping machines, laser cutting machines, CNC bending machines, together with complete QC testing equipment including 2D projectors, salt spray testers and tensile testers. Certified to ISO9001:2015, we hold multiple utility model patents for hardware molds.

Our products are widely applied in consumer electronics, optical communication, medical devices, automotive and new energy electrical industries, with more than 400 customized projects completed. We maintain long-term partnerships with renowned enterprises including KYOCERA, Foxconn and RICOH.

63% of our annual RMB 30 million revenue comes from overseas exports. Our self-developed progressive mold technology cuts processing costs by 80%. We support rapid prototyping and mass production, delivering stable, cost-effective customized hardware solutions for global clients.