Heavy-Duty Internal and External Thread Nuts for Furniture Assembly

• Customization: Available
• Material: Carbon Steel
• Type: Round Head
• Model NO.: 1-1
• Connection: Common Bolt
• Head Style: Round
• Standard: DIN
• Grade: 4.8
• Application: Building
• Finish: Color-Zinc Plated
• Whether to Support Customization: Support
• Use: Connect
• Applicable Industries: Furniture, Architecture
• Thread Type: Full Thread
• Transport Package: Container
• Specification: 1-30
• Trademark: Huilin
• Origin: Handan, Hebei
• HS Code: 0101101010
• Production Capacity: 50000

Product Description

Internal and external thread bolts, intriguingly known as internal and external thread screws or combination screws, are innovative fastening solutions that seamlessly blend the unique properties of both internal and external threads. These versatile fasteners are essential across a multitude of industries including mechanical manufacturing, electronic equipment, and furniture assembly. Below, we delve into their structural nuances, operational principles, varied types, diverse applications, and the pros and cons that define their unique value proposition:

• Structural features

Composite thread design: Ingeniously engineered, one end of the bolt boasts an external thread designed to pair with a nut or an internally threaded hole. The opposite end features an internal threaded hole, allowing for a layered assembly by connecting with other bolts or screws, thus enabling multi-tier fastening of diverse components.

Diverse head shapes: Crafted to accommodate an array of operational scenarios and requirements, these bolts offer a variety of head shapes. Among the popular choices are cross grooves, straight grooves, as well as inner and outer hexagonal designs, all tailored to ensure optimal compatibility and performance.

Rich materials: These bolts are commonly crafted from robust materials such as carbon steel, stainless steel, and copper. Of these, stainless steel is particularly favored for its superior corrosion resistance and enduring strength, making it a prevalent choice in various applications.

Working principle: By engaging the external thread with an internally threaded counterpart on a connected component, the bolt is securely anchored. The internal threaded hole then interfaces with another screw or bolt, forging a cohesive connection among multiple components. The friction coupled with pre-tightening forces between threads plays a crucial role in preventing loosening, thus guaranteeing a steadfast and reliable connection.

• Common types

Equal length internal and external thread bolts: Designed with equal lengths in both the external and internal threaded sections, these bolts are ideally suited for connecting two components of similar thickness, providing a balanced and stable fastening solution.

Unequal length internal and external thread bolts: These bolts feature varying lengths in their external and internal threaded sections. This adaptability allows for tailored connections, making them perfect for assemblies where component thicknesses differ significantly.

• Application scenarios

Electronic devices: Within the realm of electronic device manufacturing, where space is at a premium and precision is paramount, internal and external threaded bolts excel. They facilitate secure connections between multi-layer circuit boards, casings, and other components, all while skillfully circumventing the space consumption and interference challenges posed by overly lengthy traditional bolts.

Furniture manufacturing: In the world of panel furniture assembly, these bolts are invaluable. They enable the rapid, stable connection of various panels, simplifying disassembly and transportation while ensuring the structural integrity of the furniture.

Mechanical equipment: These bolts are indispensable in mechanical equipment, where they effectively marry diverse components such as motors, brackets, and transmission devices. This ensures steadfast assemblies and maintains the relative stability of components during equipment operation.

• Advantages and limitations

Advantages: They streamline the assembly process and significantly reduce the number of parts required. Ideal for scenarios with spatial constraints or specialized structures, these bolts are easy to dismantle and maintain, thereby enhancing production efficiency and maintenance convenience.

Limitations: Despite their numerous benefits, these bolts feature intricate structures and incur higher manufacturing costs compared to standard bolts. Additionally, under certain extreme load conditions, their connection strength may not match that of a singular high-strength bolt.