Dongguan Lanbo Electronics Technology Co., Ltd.

Custom CNC Turned Knurled Thread Stepped Locating Pin

Custom CNC Turned Knurled Thread Stepped Locating Pin
Part No :

Custom CNC Turned Knurled Thread Stepped Locating 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 Knurled Thread Stepped Locating Pin
Manufacturing Process	CNC lathe turning, dual-section diamond knurling forming, external thread cutting, stepped diameter forming, end face chamfering, precision deburring
Materials Available	Carbon steel, SUS304 / SUS316 stainless steel, C36000 brass, 6061‑T6 aluminum alloy
Surface Treatment	Zinc plating, nickel plating, passivation, black oxide, natural machined finish
Tolerance Standard	Dimensional tolerance ±0.01mm; precise external thread fit tolerance; uniform diamond knurling tooth profile; strict coaxiality between thread section, knurled sections and each stepped shaft diameter
Inspection Standards	Caliper & micrometer dimension measurement, thread go/no‑go gauge testing, knurling profile & appearance inspection, coaxiality geometric tolerance verification, all conducted under ISO quality management system
Customization Service	Custom overall length, thread specification, knurling parameter and stepped shaft dimensions 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 Knurled Thread Stepped Locating Pin

Our Custom CNC Turned Knurled Thread Stepped Locating Pin is a precision press-fit positioning component featuring dual diamond knurled sections, standard external thread and multi-diameter stepped shaft body, designed for embedded fastening and precise locating assembly. As a professional CNC turning manufacturer based in Dongguan, we produce customized knurled stepped locating pins with ±0.01mm ultra-precise tolerance strictly following customers’ 2D & 3D engineering drawings. We support full OEM & ODM customization for total length, thread specification, knurling parameters and stepped shaft dimensions. These knurled thread pins are widely used for plastic insert embedding, fixture locating, mold positioning and structural assembly in electronics, automotive and precision machinery fields.

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

Knurled thread stepped locating pin is a composite press-fit fitting integrating dual diamond knurled sections, external threaded end and multi-step positioning shaft body. The diamond knurled sections form strong mechanical interlock with base material (plastic, metal or alloy) after press fitting, providing excellent anti-torsion and anti-pull-out performance; the external thread end realizes reliable threaded connection and locking; the stepped shaft body achieves accurate positioning and multi-section assembly matching. It solves common industry pain points such as easy loosening after press installation, low positioning accuracy and insufficient bonding strength under long-term vibration. The integrated structure ensures stable embedding force and precise positioning, effectively improving assembly reliability and service life for embedded fastening and positioning systems.

Our Product Service

We provide one-stop custom CNC turning service for knurled thread stepped locating pins for global electronics, automotive, mold and automation equipment suppliers. Our product scope covers custom press-fit locating pins, embedded stepped shafts, positioning pins and other non-standard precision turned hardware. We complete full turning, diamond knurling forming, external thread cutting, stepped diameter processing 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

Dual diamond knurled sections with strong interlocking force

The dual diamond knurled sections are formed by precision CNC knurling process, with uniform tooth profile and consistent depth. Compared with straight knurling, diamond knurling provides stronger torsion resistance and pull-out resistance after press fitting, forming firm mechanical interlock with the base material, and effectively preventing the pin from rotating or falling off under long-term vibration and repeated stress.

High coaxiality integrated stepped shaft structure

All diameter sections of the stepped shaft are machined in one clamping, with strict coaxiality control and dimensional tolerance up to ±0.01mm. It ensures accurate positioning and smooth press-fit assembly, avoids jamming or offset during installation, and meets the high-precision positioning requirements of fixtures, molds and precision equipment.

Multi-functional integrated design of embedding and threading

The pin integrates press-fit embedding, precise positioning and threaded connection functions into one piece. The knurled section is used for fixed embedding, the stepped shaft for accurate positioning, and the threaded end for locking connection. It reduces the number of assembly parts, simplifies the overall structure, and effectively improves assembly efficiency and structural reliability.

Wide material and surface treatment adaptation

Optional materials include carbon steel, stainless steel, brass and aluminum alloy, which can meet different requirements of strength, corrosion resistance and weight. Surface treatments such as zinc plating and nickel plating further enhance anti-rust and wear resistance, effectively extending the service life of the pin in various working environments.

Full-parameter customization based on drawings

All key parameters including total length, thread standard, knurling specification and stepped shaft dimensions 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 knurled thread stepped locating pins and all kinds of precision CNC turned components. Available materials include carbon steel, SUS304/SUS316 stainless steel, C36000 brass and 6061‑T6 aluminum alloy, with sufficient bar stock to match different strength, corrosion resistance and weight requirements.
Our custom product range includes locating pins, connecting shafts, bushings, threaded fittings and other rotational precision machined parts. Selectable surface treatments: natural machined finish, zinc plating, nickel plating, passivation, black oxide 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 Knurled Thread Stepped Locating Pin is widely used in plastic part press-fit embedding assembly, fixture precise positioning fitting, mold locating component assembly, automation equipment press-fit parts, mechanical structure connecting positioning and industrial hardware embedded fastening 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.