Dongguan Lanbo Electronics Technology Co., Ltd.

Custom CNC Turned Stainless Steel Internal Thread Cylindrical Sleeve

Custom CNC Turned Stainless Steel Internal Thread Cylindrical Sleeve
Part No :

Custom CNC Turned Stainless Steel Internal Thread Cylindrical 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 Stainless Steel Internal Thread Cylindrical Sleeve
Manufacturing Process	CNC turning, internal thread tapping, inner‑hole boring, outer contour turning, chamfering, precision deburring
Materials Available	SUS304, SUS316 stainless steel, 6061‑T6 aluminum alloy, C36000 brass, carbon steel
Surface Treatment	Natural stainless steel finish, passivation, polishing, nickel plating, zinc plating
Tolerance Standard	Dimensional tolerance ±0.01mm; precise internal thread tolerance; strict coaxiality between inner thread and outer cylinder; controlled chamfer dimension
Inspection Standards	Caliper & micrometer dimension test, thread gauge verification, coaxiality geometric tolerance check, surface visual inspection under ISO quality management system
Customization Service	Custom outer diameter, wall thickness, overall length and internal thread specification according to drawings or samples; support prototype trial, OEM & ODM mass‑volume orders

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Detailed description

Custom CNC Turned Stainless Steel Internal Thread Cylindrical Sleeve

Our Custom CNC Turned Stainless Steel Internal Thread Cylindrical Sleeve is a hollow rotary coupling component with precision internal female thread. As a professional CNC turning manufacturer based in Dongguan, we produce customized stainless steel internal thread cylindrical sleeves with ±0.01mm ultra‑precise tolerance strictly following customers’ 2D & 3D engineering drawings. We support full OEM & ODM customization for outer dimension, wall thickness and internal thread standards. These stainless steel threaded sleeves are widely adopted for threaded connection, coupling assembly and press‑fit fitting in automation fixtures, instrument equipment and precision mechanical systems.

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

Stainless steel internal thread cylindrical sleeve is a hollow cylindrical machined part with internal female thread. The inner thread provides reliable threaded mating interface, while cylindrical outer profile enables press‑fit installation. It solves typical industry pain points such as poor thread concentricity, loose mating and insufficient corrosion resistance, improving connection stability for mechanical coupling and equipment assembly.

Our Product Service

We deliver one‑stop custom CNC turning service for stainless steel internal thread cylindrical sleeves for global industrial equipment suppliers. Our product scope covers custom threaded hollow sleeves, coupling bushings and other non‑standard rotational machined hardware. We perform turning, boring, thread tapping and deburring strictly based on customer engineering drawings. Value‑added services include passivation & plating treatments, full‑dimension inspection, prototype sampling and large‑batch OEM production.

5 Core Advantages

High‑concentricity internal thread machining

Integrated one‑clamp turning and tapping guarantees excellent coaxiality between inner thread and outer cylinder, eliminates offset and ensures smooth threaded mating performance.

Stainless steel corrosion‑resistant substrate

SUS304 / SUS316 stainless steel base material delivers outstanding rust and chemical corrosion resistance, suitable for humid and harsh working environments, extending component service life.

Flexible wall‑thickness customizable structure

Wall thickness, outer diameter and overall length can be fully adjusted to match pressure‑bearing requirements, balancing mechanical strength and installation space constraints.

Smooth inner‑hole & outer‑cylinder surface

Precision turning and deburring remove burrs, prevent jamming during assembly; passivation treatment further stabilizes surface anti‑corrosion performance.

Drawing‑oriented full‑spec customization

Thread standards, body dimension and chamfer parameters can all be customized from 2D/3D drawings or physical samples. Both small‑batch prototype verification and large‑volume mass orders are acceptable.

OEM Custom Service Range

We provide comprehensive customized solutions for custom stainless steel internal thread cylindrical sleeves and all kinds of precision CNC turned components. Available materials include SUS304/SUS316 stainless steel, 6061‑T6 aluminum alloy, C36000 brass and carbon steel, with sufficient bar stock to match different strength, weight 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 stainless steel finish, passivation, polishing, nickel plating and zinc plating.
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 Stainless Steel Internal Thread Cylindrical Sleeve is widely used for mechanical threaded coupling, automation fixture assembly, instrument structural connection, equipment joint fitting, press‑fit installation and corrosion‑resistant industrial hardware 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.