45# Steel Custom Double End Stud Bolt
45# steel custom double end stud bolt is a high-strength threaded fastening component designed for heavy-duty mechanical connections requiring reliable clamping force and precise alignment. The 45# steel custom double end stud bolt features threads on both ends with an unthreaded shank section in the middle, making it ideal for flange connections, machinery assemblies, and structural installations where repeated disassembly is required.
Manufactured from medium carbon steel (45# steel), the 45# steel custom double end stud bolt provides excellent tensile strength after heat treatment, ensuring stable performance under high load and mechanical stress. It is widely used in industrial equipment, automotive systems, pressure vessels, and OEM engineering structures.
Product Overview
The 45# steel custom double end stud bolt is engineered for high-strength bolted joint systems where precise positioning and durable fastening are required. Unlike standard bolts, stud bolts are installed with nuts on both ends, improving load distribution and assembly stability.
This 45# steel custom double end stud bolt is commonly used in flange connections, engine blocks, pump systems, and heavy machinery where vibration resistance and reusability are essential. Its custom manufacturing capability allows flexible adaptation to different engineering requirements.
As a reliable industrial fastener, it plays a critical role in maintaining structural integrity in high-pressure and high-load environments.
Product Specifications
| Item | Description |
|---|---|
| Product Name | 45# Steel Custom Double End Stud Bolt |
| Material | 45# Carbon Steel (Medium Carbon Steel) |
| Thread Type | Metric / UNC / Custom |
| Structure | Double End Threaded Stud |
| Head Type | No Head (Stud Type) |
| Diameter Range | M6–M64 |
| Length Range | 20mm–1000mm |
| Surface Finish | Black Oxide / Zinc Plated / Hot-Dip Galvanized / Custom |
| Strength Grade | 8.8 / 10.9 (after heat treatment) |
| Thread Direction | Right Hand |
| Packaging | Industrial carton / wooden case / OEM packaging |
| Customization | Length, grade, coating, thread type available |
Technical Parameters
| Parameter | Value |
|---|---|
| Tensile Strength | ≥ 600–1000 MPa (after heat treatment) |
| Yield Strength | ≥ 400–900 MPa |
| Hardness | HRC 22–32 (depending on grade) |
| Density | 7.85 g/cm³ |
| Corrosion Resistance | Moderate (improved with coating) |
| Operating Temperature | -40°C to 450°C |
| Thread Tolerance | 6g standard |
| Manufacturing Standard | GB / DIN / ASTM equivalent |
Materials and Manufacturing Process
The 45# steel custom double end stud bolt is produced using a controlled metallurgical and machining process to ensure high strength and dimensional accuracy.
- Raw material selection: High-quality 45# carbon steel bar stock
- Cutting: Steel bars cut to required length
- Turning and machining: Precise shaping of stud body
- Thread rolling: Cold forming for improved fatigue strength
- Heat treatment: Quenching and tempering for strength grade improvement
- Straightening: Ensures geometric accuracy
- Surface finishing: Black oxide, zinc plating, or galvanizing
- Inspection: Dimensional and mechanical property testing
- Packaging: Industrial-grade export packaging
Each 45# steel custom double end stud bolt is designed for high-load performance and long-term structural reliability.
Applications of the Product
The 45# steel custom double end stud bolt is widely used in multiple industrial sectors:
- Petrochemical industry: Pipeline flanges and pressure systems
- Mechanical engineering: Heavy machinery assembly
- Automotive industry: Engine blocks and transmission systems
- Power generation: Turbines and boiler assemblies
- Construction: Structural steel connections
- Mining equipment: High-load machinery joints
- Shipbuilding: Marine engine and piping systems
- Industrial equipment: Pumps, compressors, and gear systems
Its double-end design ensures strong clamping force and stable alignment in critical assemblies.
Why Choose This Product
- High-strength 45# medium carbon steel material
- Excellent mechanical performance after heat treatment
- Suitable for high-load and vibration environments
- Flexible customization for industrial applications
- Strong fatigue resistance and durability
- Compatible with multiple coating options
- Stable performance in critical mechanical systems
- Cost-effective solution for heavy-duty fastening
- OEM/ODM production support
The 45# steel custom double end stud bolt is ideal for demanding engineering environments requiring reliable and repeatable fastening performance.
Why Choose Flybear
Flybear is a professional manufacturer of industrial fasteners specializing in custom-engineered bolt and stud solutions for global markets.
- Advanced CNC machining and thread rolling systems
- Strong production capacity for bulk industrial orders
- Custom engineering based on drawings and requirements
- Strict quality control and testing procedures
- Global export experience in industrial fasteners
- Technical support for OEM manufacturing projects
Flybear supports distributors, EPC contractors, and OEM factories with stable and high-quality fastening solutions.
Quality Inspection and Control
Quality is strictly controlled throughout production:
- Chemical composition analysis of raw material
- Tensile and yield strength testing
- Hardness testing after heat treatment
- Thread gauge inspection
- Dimensional accuracy measurement
- Straightness and surface inspection
- Coating thickness testing
- Packaging integrity inspection
All processes comply with ISO-based quality management systems to ensure consistent performance.
Selection Guide
When selecting a 45# steel custom double end stud bolt, consider:
- Required strength grade (8.8 / 10.9)
- Thread specification and pitch
- Length and engagement depth
- Operating environment (corrosion level)
- Load and torque requirements
- Surface coating requirements
Proper selection ensures long-term safety and mechanical stability.
FAQ
1. What is a double end stud bolt used for?
It is used for connecting flanges, machinery parts, and structural assemblies requiring strong clamping force.
2. What is 45# steel?
It is a medium carbon steel widely used for high-strength mechanical components after heat treatment.
3. Can stud bolts be customized?
Yes, size, length, strength grade, and coating can be customized.
4. What coatings are available?
Black oxide, zinc plating, and hot-dip galvanizing are commonly used.
5. What is the difference between studs and bolts?
Studs have threads on both ends and no head, while bolts have a head and single threaded end.
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.
