GB120 Internally Threaded Cylindrical Pin
GB120 internally threaded cylindrical pin is a precision positioning component designed for accurate alignment, secure assembly, and convenient disassembly in mechanical systems. The GB120 internally threaded cylindrical pin features a cylindrical locating body with an internal thread, allowing easy removal, installation, and positioning in industrial equipment.
Manufactured from carbon steel, the GB120 internally threaded cylindrical pin provides reliable mechanical strength, dimensional accuracy, and cost-effective performance. It is widely used in machinery manufacturing, molds, automation equipment, and precision assemblies where repeatable positioning and maintenance efficiency are required.

Product Overview
The GB120 internally threaded cylindrical pin is engineered for high-precision positioning applications where standard solid pins may require difficult removal methods. Its internal threaded structure allows tools such as screws or pullers to be connected, improving maintenance efficiency.
This GB120 internally threaded cylindrical pin provides stable alignment between mechanical components while maintaining high resistance to shear loads. The carbon steel material delivers good strength and wear resistance, making it suitable for general industrial applications.
As a reliable industrial fastener, it is commonly used by OEM manufacturers, machine builders, and tooling engineers for accurate component positioning.
Product Specifications
| Item | Description |
|---|---|
| Standard | GB120 |
| Product Name | GB120 Internally Threaded Cylindrical Pin |
| Material | Carbon Steel |
| Pin Type | Cylindrical Locating Pin with Internal Thread |
| Thread Type | Metric Internal Thread |
| Diameter Range | 4mm–30mm |
| Length Range | 10mm–100mm |
| Surface Finish | Plain / Black Oxide / Zinc Plated |
| Installation Type | Press Fit / Positioning Fit |
| Thread Function | Removal and Positioning Assistance |
| Packaging | Bulk / Carton / OEM Packaging |
| Customization | Diameter, length, thread available |
Technical Parameters
| Parameter | Value |
|---|---|
| Tensile Strength | According to carbon steel grade |
| Shear Strength | High for positioning applications |
| Hardness | According to heat treatment requirement |
| Density | Approx. 7.85 g/cm³ |
| Wear Resistance | Good carbon steel durability |
| Corrosion Resistance | Depends on surface treatment |
| Operating Temperature | Suitable for general industrial environments |
| Manufacturing Standard | GB120 |
Materials and Manufacturing Process
The GB120 internally threaded cylindrical pin is manufactured through precision machining and finishing processes to ensure accurate positioning and reliable service performance.
- Raw material selection: High-quality carbon steel bar stock
- Cutting: Precision cutting according to required length
- Turning machining: Formation of cylindrical pin body
- Internal threading: Precision tapping for removal function
- Heat treatment: Applied when required for improved hardness
- Surface finishing: Black oxide, zinc plating, or customized coating
- Grinding: Improves dimensional accuracy and surface quality
- Inspection: Diameter, length, thread, and tolerance checks
- Packaging: Protective industrial packaging for transportation
Each GB120 internally threaded cylindrical pin is manufactured under strict quality control to ensure consistent assembly performance.
Applications of the Product
The GB120 internally threaded cylindrical pin is widely used across various industries:
- Machinery manufacturing: Component positioning and alignment
- Mold industry: Mold plate and tooling positioning
- Automation equipment: Precision mechanical assemblies
- Automotive manufacturing: Fixture and tooling systems
- Industrial equipment: Replaceable positioning components
- CNC machining systems: Workholding and alignment applications
- Production fixtures: Repeatable assembly positioning
- Engineering equipment: Structural component alignment
Its internal thread design improves maintenance efficiency and reduces downtime during equipment servicing.
Why Choose This Product
- GB120 standard compatibility
- Accurate positioning performance
- Internal thread design for easy removal
- Reliable carbon steel mechanical strength
- Good wear resistance for repeated assembly
- Suitable for precision tooling applications
- Cost-effective industrial solution
- Multiple surface treatment options
- OEM customization available
The GB120 internally threaded cylindrical pin provides a practical solution for precision positioning and easy maintenance.
Why Choose Flybear
Flybear is a professional manufacturer specializing in precision industrial fasteners and customized fastening solutions.
- Advanced CNC machining and production capability
- OEM/ODM customization support
- Stable manufacturing capacity for bulk orders
- Strict quality inspection systems
- Global export experience
- Engineering support for customized applications
Flybear supplies reliable fastening components for machinery manufacturers, distributors, and industrial customers worldwide.
Quality Inspection and Control
Quality control is maintained throughout production:
- Raw material chemical composition analysis
- Dimensional accuracy inspection
- Diameter and length measurement
- Internal thread gauge inspection
- Hardness testing
- Surface finish inspection
- Tolerance verification
- Packaging quality inspection
All processes follow ISO-based quality management systems to ensure stable and reliable product performance.
Selection Guide
When selecting a GB120 internally threaded cylindrical pin, consider:
- Required pin diameter and length
- Hole tolerance and fitting method
- Internal thread specification
- Load and shear requirements
- Surface treatment requirements
- Operating environment conditions
Correct selection ensures accurate positioning and long-term assembly reliability.
FAQ
1. What is GB120 internally threaded cylindrical pin used for?
It is used for precision positioning, alignment, and removable mechanical connections.
2. Why does the cylindrical pin have an internal thread?
The internal thread allows easier removal and maintenance using screws or pulling tools.
3. Is carbon steel suitable for industrial applications?
Yes, carbon steel provides good strength, wear resistance, and cost efficiency.
4. Can surface treatments be customized?
Yes, options such as black oxide and zinc plating are available.
5. Can custom sizes be produced?
Yes, Flybear supports customized dimensions, threads, and specifications.
We always adhere to the philosophy of quality first and customer first, providing customers with high-quality fastener products and one-stop fastener solutions.
Contact us for quotation, customization, and technical support via Contact Us.




