Dongguan Lanbo Electronics Technology Co., Ltd.

Custom Stainless Steel Knurled Pin - Precision CNC Turned Shaft

Custom Stainless Steel Knurled Pin – Precision CNC Turned Shaft
Part No :

Custom Stainless Steel Knurled Pin – Precision CNC Turned Shaft 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 Stainless Steel Knurled Pin – Precision CNC Turned Shaft
Manufacturing Process	CNC lathe turning, diamond knurling processing, facing, deburring, precision cutting
Materials Available	SUS304 / SUS316 stainless steel, 1018/1045 carbon steel, 6061 aluminum alloy, brass
Surface Treatment	Raw polished finish, passivation, electropolishing, zinc plating, nickel plating, sandblasting
Tolerance Standard	Diameter tolerance: ±0.01mm; Length tolerance: ±0.02mm; Knurling tooth precision consistent; Surface roughness Ra 0.8~Ra3.2
Inspection Standards	Full dimensional inspection via micrometer & optical comparator; surface appearance check; knurling structure test; hardness testing; First Article Inspection (FAI) reports available
Customization Service	Custom diameter, overall length, knurling position & length; custom knurl patterns (diamond/straight); tailored materials, tolerance grades and surface finishes; OEM & ODM drawing customization

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Detailed description

Custom Stainless Steel Knurled Pin – Precision CNC Turned Shaft

Our custom stainless steel knurled pin & precision CNC turned shaft are precision machined rotary hardware parts with anti-slip diamond knurling sections. As a professional CNC turning manufacturer based in Dongguan, we produce customized knurled locating pins and straight shafts with ±0.01mm high precision tolerance for global industrial equipment suppliers. We support drawing-based OEM & ODM production, covering various diameters, lengths and knurling position customization. These knurled cylindrical pins are widely adopted for press-fit assembly, positioning connection and anti-slip plug-in structures in automation fixtures, electronic equipment and precision machinery.

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, solid metal bars are shaped through continuous cutting, facing, grooving, threading and boring operations with computer-controlled accuracy.
Compared with manual machining and traditional milling, precision CNC turning delivers consistent dimensional tolerances down to ±0.01mm, smooth surface finishes and excellent repeatability across high-volume production runs. It is widely used to produce pins, shafts, bushings, connectors and threaded components for mold tooling, electronic devices, medical equipment, automotive systems and industrial automation machinery.
With advanced multi-axis turning capabilities and secondary milling support, CNC lathe technology supports custom geometries including stepped diameters, ball heads, hex bodies and precision slots, which perfectly meets the diversified demands of precision locating components for industrial equipment.

What Is Knurled Pin & Its Industrial Role

A knurled pin (also named knurled locating shaft or press-fit dowel pin) is a precision cylindrical fastener distinguished by diamond-shaped knurling on partial shaft surface. The raised knurl texture greatly increases surface friction, enabling tight press-fit installation into mounting holes to avoid loosening during long-time equipment operation.
Inside automated production lines, test fixtures and electronic assemblies, knurled pins undertake core positioning and fixed connection tasks. Stable dimensional accuracy and uniform knurling depth are essential to guarantee assembly tightness. If the knurling size or shaft tolerance fails to meet standards, components will slip, shift or fall off, leading to equipment abnormal operation. Hence, high-precision CNC turned custom knurled pins are indispensable basic parts for reliable industrial equipment assembly.

Custom Stainless Steel Knurled Pin – Precision CNC Turned Shaft

We provide one-stop custom CNC turning solutions for stainless steel knurled pins and knurled locating shafts, serving automation equipment factories, electronics manufacturers and precision machinery enterprises worldwide.
Our production range covers all types of knurled cylindrical hardware: partial knurled straight pins, full knurled dowel shafts, single-section knurled positioning pins, custom stepped knurled mandrels and non-standard long knurled shafts.
All products are manufactured via precision CNC lathe turning combined with professional diamond knurling process. We complete turning, cutting, knurl forming, deburring and surface finishing strictly in accordance with your 2D/3D engineering drawings. Apart from individual finished turned pins, we also offer kitting service, bundling matching fasteners together to simplify your incoming material management and assembly procedures

Key Advantages of Our CNC Turned Knurled Pins

Ultra-precise dimensional & knurling consistency

All shafts are processed on multi-axis CNC turning equipment with in-process size monitoring. Unified shaft diameter and knurling tooth depth ensure consistent pressing tightness for each part, effectively preventing assembly looseness and component deviation.

Flexible secondary machining & kitting service

Beyond standard turning and knurling processing, we support customized cutting, chamfering and length modification. We can also match auxiliary accessories according to your demands, reducing your secondary processing workload and shortening your whole equipment production cycle.

Excellent durability for continuous industrial operation

We adopt premium SUS304/SUS316 stainless steel, carbon steel and aluminum as raw materials. Optional passivation, electroplating and polishing treatments bring outstanding rust-proof, wear-resistant and anti-corrosion performance, adapting to long-running indoor and workshop working environments.

Fully customizable structural design

We freely adjust shaft diameter, total length, knurling section position, knurl length and diamond pattern based on your assembly requirements. New non-standard structural designs are fully supported for upgrading your new-generation equipment.

Stable mass delivery capacity

From prototype sample trial production to large-batch bulk orders, we maintain unified quality standards for knurled pins all the time, capable of continuous mass supply to support long-term production plans for global industrial brands.

OEM Custom Service Scope

We provide comprehensive tailor-made solutions for custom knurled pins and all types of precision CNC turned components. For material selection, we work with SUS304 and SUS316 stainless steel, 1018 and 1045 carbon steel, 6061 and 7075 aluminum alloy, as well as C36000 brass, all available in a wide range of bar diameters to match your design specifications.
On component customization, our manufacturing scope covers knurled locating pins, dowel pins, shoulder pins, alignment pins, stepped shafts, and virtually any custom precision turned parts based on your unique requirements. For surface finishing, customers can choose from passivation, electropolishing, zinc and nickel plating, black oxide, anodizing, sandblasting and mechanical polishing to meet specific corrosion resistance and appearance needs.
In terms of service mode, we supply both individual precision turned parts and kitted pre-assembled locating components according to your production workflow. For custom tooling and fixtures, we develop exclusive turning setups based on your engineering drawings or physical samples, with full support for small-batch prototype testing before full production commitment.

Typical Application Scenarios

Our custom stainless steel knurled pins and CNC turned locating shafts are widely applied in industrial automation assembly fixtures, electronic precision equipment, semiconductor test jigs, automotive internal small assembly parts, medical instrument fittings and household appliance structural connection components.

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.