





The Double-headed bolt, also known by its other names, the double-headed bolt or double-headed screw, stands out as a cylindrical fastener adorned with threads on both ends. Here, we explore its quintessential features and the array of scenarios where it finds its true calling:
Key Features
1. Exceptional Connection Strength: With threads elegantly designed on both ends, this bolt promises a robust clamping force, ensuring the steadfastness and security of your connection.
2. Seamless Installation and Removal: In instances where direct bolt connection poses a challenge, the ingenuity of double-headed bolts shines. Simply screw in one end and then affix the nut, streamlining the operation for sheer convenience.
3. Versatile Adjustability: Choose from an array of double-headed bolt lengths tailored to meet the thickness and installation demands of your components, providing a degree of flexibility that meets your unique needs.
4. Universal Applicability: Embraced across diverse industries, from mechanical manufacturing to construction engineering, automobile manufacturing, shipbuilding, power, chemicals, oil refining, and valves, this bolt seamlessly connects a multitude of materials and component shapes.
Distinct Structural Characteristics
1. Dual-End Threads: Each end of the double-headed stud showcases threads, either aligned in the same direction or opposite, contingent upon specific requirements.
2. Central Smooth Cylindrical Section: The middle segment of a double-headed stud is typically devoid of threads, featuring a sleek cylindrical part known as the smooth rod.
3. Varied Specifications: Available in diverse sizes, double-head bolts boast thread diameters ranging from M2 to M100 millimeters. Lengths are customizable to suit individual needs. Threads are categorized into coarse, marked by M plus nominal diameter, and fine, indicated by M plus nominal diameter multiplied by pitch.
Choice of Materials and Surface Enhancements
1. Popular Material Selections: Commonly crafted from carbon steel (like Q235, 45# steel), alloy steel, and stainless steel, each material offers unique mechanical properties and corrosion resistance, catering to various working environments.
2. Surface Enhancement Treatments: To enhance durability and visual appeal, surface treatments are essential. Techniques include electroplating, blackening, oxidation, phosphating, and non-electrolytic zinc coating to prolong lifespan and aesthetic allure.
Versatile Application Scenarios
1. Large Equipment Interconnections: Integral to the assembly of massive equipment such as bridges, automobiles, mining machinery, and boilers, double-headed bolts facilitate frequent maintenance due to their ease of disassembly and installation.
2. Thick Connector Challenges: When connectors boast substantial thickness, surpassing the capacity of standard bolts, double-headed bolts rise to the occasion. One end secures into the thick connector, while the other is fastened with a nut to the adjoining component.
Double-headed bolts are indispensable fasteners, lauded for their superior connection strength, ease of installation and disassembly, robust adjustability, and broad applicability. Selecting the perfect bolt demands consideration of your specific working environment and the connection prerequisites.