Dongguan Lanbo Electronics Technology Co., Ltd.

Custom CNC Turned External Thread Brass Hollow Sleeve

Custom CNC Turned External Thread Brass Hollow Sleeve
Part No :

Custom CNC Turned External Thread Brass Hollow Sleeve 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 External Thread Brass Hollow Sleeve
Manufacturing Process	CNC lathe turning, external thread cutting, hex flange forming, inner bore boring, edge chamfering, precision deburring
Materials Available	C36000 lead-free brass (standard), H59/H62 brass, SUS304 / SUS316 stainless steel, 6061-T6 aluminum alloy, carbon steel
Surface Treatment	Natural machined brass finish, mechanical polishing, nickel plating, tin plating, gold plating, passivation
Tolerance Standard	Dimensional tolerance ±0.01mm; precise external thread fit tolerance; strict coaxiality between inner bore and outer cylinder; perpendicularity control for hex flange end face
Inspection Standards	Caliper & micrometer dimension measurement, thread go/no-go gauge testing, coaxiality geometric tolerance check, surface visual inspection, all conducted under ISO quality management system
Customization Service	Custom outer diameter, wall thickness, overall length, thread specification and flange size according to customer 2D/3D drawings or physical samples; support prototype trial production, OEM & ODM mass-volume orders

Inquiry now

Detailed description

Custom CNC Turned External Thread Brass Hollow Sleeve

Our Custom CNC Turned External Thread Brass Hollow Sleeve is a precision hollow connecting component integrated with hex positioning flange and standard external thread structure. As a professional CNC turning manufacturer based in Dongguan, we produce customized brass hollow sleeves with ±0.01mm ultra-precise tolerance strictly following customers’ 2D & 3D engineering drawings. We support full OEM & ODM customization for sleeve diameter, wall thickness, thread specification and flange size. These brass threaded sleeves are widely adopted for electrical connection, fluid transmission and structural assembly in electronic devices, instrumentation and precision mechanical equipment.

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

External thread brass hollow sleeve is a hollow cylindrical connecting part with hex flange positioning end and precision external thread. The hex flange provides stable installation positioning and torque bearing surface, external thread realizes reliable threaded connection, and hollow inner bore can be used for wire passing, fluid circulation or component nesting. It solves common industry pain points such as difficult positioning during installation, poor conductive and thermal conductivity, and unstable thread fit, giving full play to brass’s advantages of excellent conductivity, corrosion resistance and easy machining, and improving connection reliability and service life for electrical and fluid equipment.

Our Product Service

We provide one-stop custom CNC turning service for external thread brass hollow sleeves for global electronics, instrumentation and fluid equipment suppliers. Our product scope covers custom brass threaded sleeves, flange connection bushings, conductive brass fittings and other non-standard precision turned hardware. We complete full turning, external thread cutting, hex flange forming and inner bore boring 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

Integrated hex flange and external thread structure

The hex flange and external thread are machined from a single brass bar in one clamping, with no assembly gaps and high structural strength. The hexagonal end face provides reliable torque bearing during tightening, effectively preventing slipping during installation and disassembly, and improving assembly efficiency.

Premium brass material with excellent comprehensive performance

Adopting high-quality lead-free brass as standard material, it has excellent electrical and thermal conductivity, good corrosion resistance and excellent machinability. It is especially suitable for electrical connection, fluid pipeline and other scenarios, with stable performance and long service life in conventional working environments.

High-precision coaxiality control for inner and outer diameters

The inner bore and outer thread are processed by one-time clamping, with strict coaxiality control. The dimensional tolerance can reach ±0.01mm, ensuring smooth fitting and assembly, avoiding jamming or offset during installation, and meeting the assembly accuracy requirements of precision equipment.

Diversified surface treatment options

In addition to natural machined brass finish, optional surface treatments such as mechanical polishing, nickel plating, tin plating and gold plating are available. It can meet the requirements of different scenarios such as improving corrosion resistance, enhancing conductivity and optimizing appearance, and is flexible to adapt to diversified industry applications.

Full-parameter drawing-based customization

All key parameters including outer diameter, wall thickness, total length, thread standard and flange size 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 external thread brass hollow sleeves and all kinds of precision CNC turned components. Available materials include C36000 lead-free brass, H59/H62 brass, SUS304/SUS316 stainless steel, 6061-T6 aluminum alloy and carbon steel, with sufficient bar stock to match different conductivity, strength and corrosion resistance requirements.
Our custom product range includes connecting sleeves, locating pins, bushings, stepped shafts, threaded fittings 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 External Thread Brass Hollow Sleeve is widely used in electronic and electrical component connection, fluid pipeline joint assembly, instrumentation structural fitting, automation equipment conductive parts, communication equipment connecting hardware and precision machinery threaded 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.