Dongguan Lanbo Electronics Technology Co., Ltd.

Custom CNC Turned Knurled Rounded Head Locating Dowel Pin

Custom CNC Turned Knurled Rounded Head Locating Dowel Pin
Part No :

Custom CNC Turned Knurled Rounded Head Locating Dowel 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 Rounded Head Locating Dowel Pin
Manufacturing Process	CNC lathe turning, straight knurling forming, rounded head precision finishing, end face chamfering, surface fine finishing, precision deburring
Materials Available	Carbon steel, SUS304 / SUS316 stainless steel, C36000 brass; special materials available upon request
Surface Treatment	Natural machined finish, zinc plating, nickel plating, passivation, black oxide, polishing
Tolerance Standard	Dimensional tolerance ±0.01mm; uniform straight knurling tooth profile; precise smooth shaft outer diameter fit tolerance; strict coaxiality between knurled section and smooth shaft section; controlled rounded head contour accuracy
Inspection Standards	Caliper & micrometer dimension measurement, knurling profile & appearance inspection, coaxiality geometric tolerance verification, surface finish check, all conducted under ISO quality management system
Customization Service	Custom overall length, shaft diameter, knurling parameter 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 Knurled Rounded Head Locating Dowel Pin

Our Custom CNC Turned Knurled Rounded Head Locating Dowel Pin is a precision press-fit positioning component integrated with straight knurled fixing section, high-precision smooth locating shaft and rounded insertion guiding head, designed for accurate locating and long-term stable press-fit assembly. As a professional CNC turning manufacturer based in Dongguan, we produce customized knurled locating dowel pins with ±0.01mm ultra-precise tolerance strictly following customers’ 2D & 3D engineering drawings. We support full OEM & ODM customization for total length, shaft diameter, knurling parameters and rounded head contour. These knurled dowel pins are widely used for fixture positioning, mold locating, mechanical assembly, jig fitting and precision equipment installation in automation, mold and precision machinery 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

Knurled rounded head locating dowel pin is a press-fit positioning fitting composed of straight knurled fixing section, smooth precision locating shaft and rounded guiding head. The knurled section forms firm mechanical interlock with the base material after press installation, providing excellent anti-torsion and anti-pull-out performance; the smooth shaft achieves high-precision clearance fit to ensure accurate positioning; the rounded head realizes automatic guiding during insertion, reducing assembly difficulty and avoiding hole wall scratching. It solves common industry pain points such as easy loosening after press fitting, difficult alignment leading to low assembly efficiency and poor positioning accuracy consistency. The integrated structure ensures stable positioning performance, effectively improving assembly efficiency and positioning reliability for fixture and mold systems.

Our Product Service

We provide one-stop custom CNC turning service for knurled rounded head locating dowel pins for global fixture, mold and automation equipment suppliers. Our product scope covers custom locating dowel pins, guide pins, positioning pins and other non-standard precision turned hardware. We complete full turning, straight knurling forming, rounded head finishing, surface fine treatment 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

Firm anti-loosening straight knurled structure

The straight knurled section is formed by precision CNC knurling process with uniform tooth profile and consistent depth. After being pressed into the base material, it forms tight mechanical interlock, effectively resisting torsion and axial pulling force, preventing the pin from rotating or falling off under long-term vibration and repeated stress, ensuring long-term stable positioning.

Rounded guiding head for efficient assembly

The top rounded head is finished with high precision, presenting smooth arc contour without burrs. It realizes automatic guiding alignment during press-fit assembly, greatly reducing insertion resistance, improving assembly efficiency, and avoiding scratching the inner wall of the mating hole, suitable for high-volume assembly production lines.

High-precision smooth locating shaft

The smooth shaft section is machined with high precision, with strict control of outer diameter tolerance and surface finish. It achieves accurate clearance fit with the mating hole, ensuring high positioning accuracy and good interchangeability, meeting the precision requirements of fixture, mold and precision equipment positioning.

Diversified material and surface treatment options

Optional materials include carbon steel, stainless steel and brass to meet different requirements of strength, corrosion resistance and cost. 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 drawing-based customization

All key parameters including total length, shaft diameter, knurling specification 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 knurled rounded head locating dowel 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 Rounded Head Locating Dowel Pin is widely used in fixture precise positioning assembly, mold press-fit locating dowel, mechanical assembly accurate positioning, jig guide locating component, industrial equipment guide fitting and precision instrument press-fit 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.