







Discover the Top Burst Screw, an essential tool for your installation needs. Known interchangeably as the top burst expansion screw or ceiling expansion bolt, this specialized expansion screw is celebrated for its unique architecture and robust performance. Let us delve into its structure, operational principle, distinguishing features, versatile usage scenarios, practical application methods, and crucial precautions:
Structure: The top burst screw is ingeniously crafted with a casing, expansion tube, screw, nut, and gasket. The casing's cylindrical form features a closed bottom and an open top. Inside, the expansion tube is housed, with the screw seamlessly piercing through. The screw's top is either flat or cross-shaped for ease of tool access, while the bottom showcases a conical design. Nuts and washers are deployed for securing objects with precision.
Working Principle: Begin by drilling a hole into the installation base. Insert the top burst screw, then twist the screw upwards using a tool. As the cone at the screw's bottom engages, the expansion tube is forced outwards due to the casing's closed end. This action creates immense friction and anchoring force, securely affixing objects to the base.
• Characteristics
Exceptional Anchoring Force: Engineered for maximum contact with the hole wall, this screw offers a significantly stronger anchoring force than standard options, ideal for supporting heavier items with confidence.
Swift Installation: With its uncomplicated operation, simply tighten the screw to achieve expansion and secure fixation, dramatically enhancing your construction efficiency.
Elegant Concealment: Once installed, the sleeve remains hidden within the hole, delivering a clean and aesthetically pleasing finish for scenarios where appearance matters.
Unwavering Stability: Designed to maintain steadfast fixation, even under high tension and vibration, ensuring a stable and reliable connection at all times.
• Usage Scenarios
Decoration and Renovation: Perfect for securely installing ceiling joists, chandeliers, and large decorative artworks, ensuring safety and stability for all decorative elements.
Home Installation: Ideal for affixing heavy furniture like large wardrobes and bookcases, guaranteeing safe and stable furniture use.
Engineering Construction: Provides unwavering support and fixation for equipment and components in mechanical and electrical installations, pipeline fixations, and a variety of other engineering applications.
• Instructions for Use
1. Measurement and Positioning: Use precise measuring tools to mark drilling points as per installation requirements for optimal accuracy.
2. Drilling: Choose a compatible drill bit for the top burst screw specifications. Drill vertically at the marked point, ensuring the hole depth slightly exceeds the screw's length for full insertion.
3. Screw Insertion: Carefully place the entire top burst screw into the drilled hole, ensuring the sleeve fits snugly against the hole wall.
4. Securing Objects: Position the object on the screw, followed by the gasket and nut. Tighten using a wrench or power tool, allowing the screw's upward movement to expand the tube and achieve secure fixation.
• Precautions
Specification Matching: Select the top burst screw specifications based on the weight, size, and material of the installation object to ensure adequate load-bearing capacity.
Quality Inspection: Inspect all components of the top burst screw before installation. Replace any deformed or damaged screws or tubes immediately to maintain optimal fixing performance.
Force Control: Exercise caution when tightening the nut. Avoid excessive force to prevent screw breakage or tube over-expansion, which could damage the substrate. Insufficient force will compromise fixation.