Custom CNC Machined Double-Ended Threaded Hex Shoulder Pins
Project-Specific Threaded Component Machining
This custom CNC machined component has a long cylindrical body, a central hexagonal section and externally threaded ends on both sides. The central hex may function as a wrenching, locating, retaining or assembly feature, while the cylindrical sections can be dimensioned for clearance, guidance, spacing or alignment within the customer’s mechanism.
The visible geometry is consistent with CNC turning for the cylindrical and threaded features, combined with secondary milling or indexed machining for the central hex section. A mill-turn or multi-operation routing may be considered when the drawing requires close positional relationships between the turned surfaces, threads and hex feature.
The photographs do not establish exact dimensions, material grade, thread standard, tolerances, surface treatment or end use. We therefore manufacture this type of component against an approved drawing, 3D model or qualified sample rather than assuming visual dimensions.
✓Review Checklist
- Material grade and material certificate
- Thread size, pitch and standard at both ends
- Body diameters, overall length and thread lengths
- Hex across-flats dimension and position
- Concentricity, runout and critical fits
- Deburring, edge-break and surface requirements
- FAIR, CMM data, material documents and packaging
Product Specifications
Why Buyers Use a Drawing-Based Process
01Thread Fit Protection
Both threaded ends must match the mating components. Size, pitch, class, engagement length, relief and thread direction should be defined before machining.
02Hex Feature Control
The central hex may control installation or positioning. Across-flats size, edge condition and its relationship to the turned surfaces should be specified.
03Concentricity Control
The body, threaded ends and hex section may affect alignment. Critical runout, coaxiality or positional relationships should be called out on the drawing.
04Material Verification
The image filenames reference SS303, but appearance alone cannot confirm the grade. Material and certificate requirements should be fixed before production.
05Burr and Edge Control
Thread starts, reliefs, hex edges and diameter transitions should be reviewed for burr control, safe handling and reliable assembly.
06Inspection Evidence
CMM, 2D measurement, first-article inspection and agreed quality records can support repeat-production decisions.
07Prototype to Production
Start with a sample or small batch, validate fit and process stability, then plan repeat production against the approved revision.
Manufacturing and Quality Control
Shenzhen Perfect’s documented quality resources include 6 QA/QC inspectors, CMM, 2D measuring instruments and additional gauges. ISO9001:2015 and ISO13485:2016 are identified as verified company-level quality systems in the supplied information.
Applications and Target Industries
Plausible Application Categories
- Industrial equipment and machine assemblies
- Robotics and automation mechanisms
- Fixtures, jigs and adjustable mounting systems
- Mechanical locating or spacing assemblies
- Instrumentation and equipment subassemblies
- Automotive or transportation components where validation permits
Technical Validation Required
These are potential application categories, not confirmed end uses for the pictured part. Final suitability depends on material grade, thread engagement, load, vibration, temperature, corrosion exposure, installation torque and applicable standards.
Company-level target industries include medical, aerospace, automotive, marine, robotics and automation, agricultural machinery, industrial equipment and electronics. This does not constitute approval of this specific component for a regulated or safety-critical application.
Request a Quote
Send your 2D drawing or 3D model with the information below. The engineering team can then review manufacturability and prepare a project-based quotation.
- Material grade and condition
- Thread size, pitch and standard at both ends
- Overall length and body diameters
- Hex across-flats dimension and position
- Critical dimensions and tolerances
- Concentricity and runout requirements
- Surface finish and treatment
- Prototype and production quantity
- Inspection documentation needs
- Packaging, marking and target delivery date
Why Choose Shenzhen Perfect?
Frequently Asked Questions
What is this part called?
It can be described as a custom double-ended threaded hex shoulder pin, threaded cylindrical pin or custom threaded shaft. The final name should follow the buyer’s drawing, BOM or assembly terminology.
Is the pictured part made from SS303 stainless steel?
The supplied image filenames reference SS303, but the material grade cannot be verified from photographs. Confirm the required grade on the drawing and request the applicable material certificate before production approval.
What thread standard and size are available?
External male threads are visible at both ends, but size, pitch, standard, class/fit and thread length are not confirmed. Provide the complete thread call-out for each end.
Can the central hex and threaded ends be made in one process?
The cylindrical and threaded features are suited to CNC turning. The central hex may require indexed milling, mill-turn machining or another secondary operation. The route is selected after reviewing geometry, tolerances and quantity.
What tolerance can you achieve?
The company states a general machining capability of ±0.01 mm and special precision areas of ±0.005 mm. These are not automatic guarantees for every feature; applicable tolerances must be confirmed against the drawing and inspection plan.
Can you provide prototypes or low-volume quantities?
Prototype, small-batch, pilot and repeat-production projects can be reviewed. Minimum quantity, sample cost, process route and schedule are project-dependent.
Can you provide inspection and material documents?
The company information states that material certificates and inspection reports can be provided when requested. Specify whether you require a first-article report, CMM report, certificate of conformity, material certificate or third-party inspection.
What surface treatments are available?
Possible finishing options may include polishing, passivation or another specified treatment. The suitable treatment depends on material grade, corrosion environment, appearance, thread fit and acceptance standard.
Which files should I send for quotation?
PDF drawings and common 3D formats such as STEP, IGS, STL or X_T can be reviewed. DWG or DXF files may also be used for 2D information. Ideally, send a synchronized 2D drawing and 3D model with the latest revision.
How is the final price determined?
Pricing depends on material, dimensions, thread complexity, tolerance, machining time, secondary operations, quantity, finishing, inspection, packaging and delivery terms. A drawing-based quotation is more reliable than estimating from a photograph.
Ready to Start Your Threaded Component Project?
Send the drawing or sample details for a professional engineering review of the material, thread requirements, central hex, tolerances, inspection scope and finishing options.
