Double End Fastener

A double-ended fastener is a precision connecting component with threaded ends. By engaging the threads on both ends with the connected parts, it achieves a stable and reliable connection, providing either rigid or flexible attachment. As the "invisible backbone" in industrial assembly, its core value lies in balancing connection strength, assembly efficiency, and adaptability to various working conditions, making it particularly suitable for complex applications requiring frequent disassembly, bidirectional force application, or limited space constraints.

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Products Description

A double-ended fastener is a common and essential mechanical fastening component, typically consisting of a metal rod with threaded ends and a smooth or fully threaded shaft in the middle. It is primarily used to provide reliable connections and fastening between structural components, equipment parts, or large assemblies. It finds widespread application in mechanical manufacturing, power generation, the automotive industry, rail transportation, engineering equipment, and new energy systems. Unlike ordinary bolts, a double-ended fastener is typically fixed to the base material or frame at one end. In contrast, the other end is used to attach a nut or other component. This design effectively enhances assembly strength and stability, making it particularly suitable for applications involving high loads, heavy vibrations, and frequent assembly and disassembly.

Key Selling Points

1. Material Advantages – Reliable Performance of High-Strength Alloy Steel and Stainless Steel

Superior Raw Materials: Using high-quality alloy materials such as 35CrMo, 42CrMo, and 304/316 stainless steel, ensuring superior strength and corrosion resistance.

Heat Treatment Process: Through quenching, carburizing, or nitriding processes, the Double Ended Stud achieves higher hardness and fatigue resistance.

Corrosion Resistance: Stainless steel material guarantees a corrosion resistance time of ≥ 500 hours in acidic, alkaline, and salt spray environments.

Quantifiable Value:

Tensile strength ≥ 800MPa, meeting high-strength connection requirements.

Fatigue life increased by over 20%, extending equipment maintenance cycles.

In high humidity or outdoor environments, service life can be extended by 3-5 years.

2. Manufacturing Advantages – Precision Machining and Rigorous Testing

Precision Turning and Thread Rolling: Ensures thread accuracy to 6g/6H standard, guaranteeing smooth and reliable assembly.

CNC Machining: Maintains dimensional tolerance within ±0.02mm, suitable for high-precision assembly requirements.

Comprehensive Testing System: Every batch of products undergoes multiple tests, including hardness, tensile strength, salt spray, and ultrasonic flaw detection.

Quantifiable Value:

Thread engagement ≥ 95%, reducing installation risks.

Defect rate ≤ 0.5%, ensuring high batch delivery consistency.

Each Double Ended Bolt comes with a test report, enabling traceability.

Strict Selection of Steel Wire for Double End Fastener

Application Scenarios

Heavy Machinery	Connecting large structural Dual End Screws in construction machinery, agricultural equipment, and mining equipment.
Automotive and Transportation	Engine mounting, chassis suspension systems, and transmission installation.
Energy and Power	Wind turbine tower connections, gas turbine casings, and transformer mounting bases.
Infrastructure	Steel-structured bridges, embedded Dual Threaded Screws in buildings, and large support frames.
High-End Manufacturing	Precision machine tool assembly, automated production line module connections, and robotic joint fixation.