Dongguan Lanbo Electronics Technology Co., Ltd.

Custom CNC Turned Shoulder Screw With Side Hole

Custom CNC Turned Shoulder Screw With Side Hole
Part No :

Custom CNC Turned Shoulder Screw With Side Hole 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 Shoulder Screw With Side Hole
Manufacturing Process	CNC lathe turning, external thread machining, head drilling, chamfering, deburring & precision finishing
Materials Available	SUS304 / SUS316 stainless steel, 1018/1045 carbon steel, 6061 aluminum alloy, brass
Surface Treatment	Natural stainless finish, passivation, nickel plating, zinc plating, electropolishing, sandblasting
Tolerance Standard	Shaft & thread tolerance: ±0.01mm; overall length tolerance: ±0.02mm; side hole concentricity guaranteed; Ra 0.8~Ra3.2 surface roughness
Inspection Standards	Full dimensional test with micrometer & optical comparator; thread pitch inspection, side hole position checking; surface quality inspection; FAI inspection reports available
Customization Service	Custom shoulder diameter, shank length, thread size, side hole diameter & position; adjustable head size; customizable materials, tolerance grades and surface treatments; OEM & ODM drawing customization

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Detailed description

Custom CNC Turned Shoulder Screw With Side Hole

As a professional CNC turning manufacturer, we are based in Dongguan and fabricate non-standard locating shoulder bolts with ±0.01mm ultra-precise tolerance strictly based on customers’ 2D & 3D engineering drawings. The reserved side hole is designed for pin penetration to lock rotating components and prevent slippage, widely used for positioning locking, adjustable assembly and rotational connection on automation fixtures, precision testing devices and mechanical equipment. We provide full OEM & ODM customization services to satisfy diverse fastening demands of global industrial purchasers.

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 Shoulder Screw With Side Hole & Its Industrial Application Value

A shoulder screw with side hole is a customized limit fastener featuring three functional segments: smooth shoulder shank for spacing control, threaded upper part for screwing assembly, and transverse side hole on the head for cotter pin installation. The shoulder section accurately controls assembly insertion depth to avoid over-tightening; external threads realize convenient disassembly and locking; the side through hole fixes rotating parts to eliminate axial rotation and loosening during long-term operation.
In automated production jigs, precision electronic testing equipment and automotive small assemblies, this customized shoulder bolt acts as a core positioning fastener. Uniform thread accuracy, shank dimensional tolerance and hole position precision are essential to keep equipment running stably. Inaccurate machining will lead to assembly wobble, part loosening and shortened service life, so high-precision CNC custom shoulder screws with side holes are indispensable hardware for precision industrial assembly.

Custom CNC Turned Shoulder Screw With Side Hole

e offer one-stop CNC turning customization solutions for side-hole shoulder screws and various stepped locating bolts, serving automation equipment factories, precision jig manufacturers and mechanical processing enterprises all over the world.
Our production range covers multiple types of customized threaded fasteners: long-shank shoulder bolts with side holes, short stepped locating screws, cylindrical head drilled fasteners, non-standard extended shoulder screws and special limit bolts tailored for equipment assembly.
All products are processed by precision CNC lathe turning, combining thread cutting, shank forming, head transverse drilling, chamfering and deburring processes. All machining procedures and surface finishing are completed in strict accordance with your engineering drawings. Apart from individual finished screws, we also supply matched pins, gaskets and supporting accessories to simplify your incoming material management and on-site assembly work.

Core Advantages of Our CNC Turned Shoulder Screws

Ultra-precise dimensional consistency & stable concentricity

All shoulder screws are manufactured on multi-axis CNC turning machines with whole-process dimensional monitoring. Unified shank diameter, thread pitch and side hole position ensure consistent spacing and locking performance for every piece, effectively avoiding assembly deviation and mechanical shaking.

Flexible personalized secondary machining & accessory matching

On the basis of standard turning, threading and drilling forming, we support free adjustment of shoulder length, thread specification, head size and side hole parameters. We can also configure matching pins and washers according to your needs, reducing your secondary processing workload and shortening your whole equipment production cycle.

Outstanding wear & corrosion resistance for long continuous operation

We select premium SUS304/SUS316 stainless steel, carbon steel and aluminum alloy as raw materials. Optional passivation, nickel plating, zinc plating and polishing treatments greatly enhance rust-proof and wear-resistant properties, adapting to various indoor workshop long-running working environments.

Full structural customization to match unique assembly needs

We can freely adjust total length, shoulder thickness, thread length, hole diameter and hole position based on your assembly structure requirements. Brand new non-standard special-shaped bolt designs are fully supported for your new-generation equipment upgrading.

Stable mass production capacity & punctual delivery

From small-batch prototype sampling to large-volume bulk orders, we always implement unified strict quality inspection standards. Sufficient production capacity ensures continuous stable supply, supporting long-term procurement plans of global industrial brand customers.

OEM Custom Service Scope

We provide comprehensive tailor-made solutions for custom shoulder screws with side holes 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 shoulder screws with side holes are widely applied in industrial automation assembly fixtures, precision electronic testing jigs, automotive mechanical fittings, semiconductor inspection equipment, medical instrument connecting components and intelligent household appliance rotary fastening parts.

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.