Dongguan Lanbo Electronics Technology Co., Ltd.

Custom CNC Turned Step Brass Connector Pin

Custom CNC Turned Step Brass Connector Pin
Part No :

Custom CNC Turned Step Brass Connector 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 Step Brass Connector Pin
Manufacturing Process	CNC precision turning, multi-step stepped contour machining, rounded tip forming, external thread tapping, gold plating electroplating, deburring & chamfering
Materials Available	H62 / C3604 free-cutting brass (main body); SUS304 stainless steel (threaded tail); phosphor bronze, beryllium copper optional
Surface Treatment	Hard gold plating / thin gold plating, nickel underplating, passivation, silver plating; customized plating thickness for conductive demand
Tolerance Standard	Overall dimensional tolerance: ±0.01mm; thread conforms to ISO metric standard; coaxiality & concentricity strictly controlled; surface roughness Ra0.8 ~ Ra3.2
Inspection Standards	Full dimension inspection with micrometer & caliper; concentricity test, thread fitting test, plating thickness detection, conductive performance sampling test; First Article Inspection (FAI) report supportable
Customization Service	Custom total length, step diameter sizes, rounded tip radian, thread specification (Metric/UNC/UNF), plating thickness; adjustable materials, tolerance grades and surface finishes; OEM & ODM production based on 2D drawings, 3D models or physical samples

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Detailed description

Custom CNC Turned Step Brass Connector Pin

We are a professional precision CNC machining factory located in Dongguan, China. We specialize in manufacturing Custom CNC Turned Step Brass Connector Pins with high precision tolerance up to ±0.01mm, fully customized per customers’ 2D drawings, 3D files and prototype samples.
This multi-stage stepped contact pin adopts composite material structure: the main conductive section is brass with gold plating for excellent electrical conductivity, the tail is equipped with stainless steel threaded shank for stable locking installation, rounded dome tip ensures smooth plugging and unplugging. Widely applied in precision electrical connectors, aerospace components, testing probes, medical equipment connectors, new energy wiring harness terminals and industrial instrumentation conductive assemblies. We provide full OEM & ODM customized solutions to satisfy various electrical connection requirements for global industrial buyers.

Introduction to CNC Lathe Turning Technology

CNC lathe turning is one of the most accurate and efficient processing technologies for rotary metal parts used in precision machinery and electronic industries. Equipped with multi-axis numerical control lathes, metal bar stock undergoes cutting, stepped profiling, tip rounding, thread tapping, deburring and surface pre-treatment under digital programming control.
Compared with traditional ordinary lathe processing, CNC precision turning achieves stable dimensional accuracy within ±0.01mm, uniform surface finish and consistent batch quality. It is extensively used to produce contact pins, shaft sleeves, positioning pins, threaded terminals, conductive probes and other precision hardware parts for electronics, medical devices, automotive and aerospace industries.
Integrated one-time forming completes all stepped contours and structural features, perfectly meeting the strict dimensional and concentricity demands of precision connector pins.

Product Principle & Functional Advantages of Step Brass Connector Pin

The stepped gold-plated brass connector pin is a core conductive contact component for male-female docking connectors, its hierarchical structural design brings multiple irreplaceable advantages:
Multi-step stepped positioning structure: Each step shoulder acts as a limit stop during assembly, effectively controlling insertion depth, preventing excessive pressing and ensuring unified assembly precision in mass production;
Gold-plated brass main body: Gold plating features low contact resistance, anti-oxidation, anti-corrosion and wear resistance, maintaining stable electrical conduction under long-term frequent plugging;
Smooth rounded tip: Eliminates sharp edges, reduces friction during mating, avoids scratching the female socket, prolongs connector service life;
Stainless steel threaded tail: High tensile strength, good vibration resistance, firmly locks into plastic or metal housings, no loosening under vibrating working conditions.
Precise concentricity, standardized thread size and controllable plating thickness are essential indicators for qualified connector pins. Our custom stepped contact pins have become mainstream customized conductive terminals for high-end precision connection fields.

Custom Service Scope for Stepped Connector Pins

We supply one-stop CNC precision machining customization for stepped conductive pins, probe pins and various electrical contact terminals, cooperating with connector manufacturers, new energy enterprises, medical device factories and aerospace supporting suppliers worldwide.
Our customizable product series covers:
Single/double/multi-step positioning pins, rounded tip flat tip pointed tip contact pins, gold-plated/silver-plated/nickel-plated conductive pins, threaded tail/press-fit tail mounting pins, miniature ultra-small pins for precision electronics.
Complete production workflow: CNC stepped turning → tip forming → tail thread machining → deburring → pre-plating polishing → underlayer nickel plating → surface gold plating → final inspection & packaging. All processing standards are executed strictly in accordance with your technical specifications. We can also customize matching female jack terminals to realize complete connector set procurement.

Core Product Advantages

Ultra-high Dimensional Precision & Strict Coaxiality Control

All pins are manufactured by high-precision automatic CNC lathes. Total length, step diameters, tip radian and thread size keep high consistency between batches; concentricity error is minimized to guarantee smooth plugging without deflection. Dimensional tolerance can be tightened to ±0.01mm as requested.

Superior Conductivity & Durable Plating Layer

Adopt high-conductivity brass substrate matched with thickened hard gold plating. Low contact resistance ensures stable current transmission; gold layer effectively resists oxidation and tarnish, suitable for humid, mild corrosive working environments. Plating thickness can be customized based on plugging cycle requirements.

Composite Material Design Balances Conductivity & Structural Strength

Conductive part: brass for optimal electrical performance; mounting tail: stainless steel for enhanced tensile and anti-vibration performance. This composite structure solves the problem that pure brass threads are easy to slip under frequent disassembly.

Highly Flexible Personalized Customization

You can freely adjust overall length, number of steps, each stage diameter, head shape, thread standard (Metric / UNC / UNF), plating thickness, material combination. Tolerance level, surface roughness and plating types are all adjustable to fit your assembly and application scenarios, cutting your secondary processing costs.

Stable Production Capacity & On-time Delivery

We support small-batch prototype trial production and large-volume mass orders with unified strict quality inspection procedures. Mature automated production lines ensure continuous supply, and we can formulate long-term delivery plans for overseas regular customers.

General OEM Customization Range

We offer all-around customized services for stepped brass connector pins and all kinds of CNC turned precision conductive hardware parts.
Optional raw materials: H62/C3604 free-cutting brass, beryllium copper, phosphor bronze, SUS304/SUS316 stainless steel; various bar diameters available to match your drawing requirements.
Available surface treatments: hard gold plating, soft gold plating, nickel plating, silver plating, passivation, polishing, anti-tarnish treatment, to meet demands of conductivity, anti-corrosion, wear resistance and appearance.
Service mode: Supply single finished pins or matched connector component kits according to your production plan. Our engineers will optimize the structural design for you first, then arrange trial production before formal bulk orders.

Main Application Fields

Our customized stepped gold-plated connector pins are widely adopted in below industries:
Precision electronic connectors, aerospace electrical components, semiconductor testing probes, medical equipment wiring terminals, new energy vehicle harness connectors, intelligent wearable devices, industrial control instrumentation, communication equipment and automated testing fixtures.

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.