Application Scope of Spring Screws
July 3, 2025
Spring screws (also known as spring washer screws or lock screws) are fasteners that combine the functions of screws and spring washers, primarily used to prevent loosening caused by vibration, shock, or thermal expansion/contraction. They are widely applied in the following fields:
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1. Industrial Machinery & Equipment
1. Mechanical Equipment
- Used in motors, pumps, compressors, and other high-vibration equipment to prevent screw loosening.
- Securing machine tools and transmission systems (e.g., gearboxes) for long-term stability.
2. Automated Production Lines
- Anti-loosening requirements for high-motion components like robotic joints and conveyor belts.
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2. Automotive & Transportation
1. Automotive Manufacturing
- Critical components such as engines, transmissions, and suspension systems (e.g., spark plugs, exhaust bolts).
- Fixing battery packs in electric vehicles (preventing vibration-induced contact failure).
2. Rail Transit
- Fastening train carriages and tracks to withstand high-frequency vibrations.
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3. Electronics & Electrical Appliances
1. Consumer Electronics
- Internal motherboard fixation in smartphones and laptops (e.g., MacBook’s anti-loosening screws).
- Motor installation in appliances (washing machines, air conditioners) to reduce noise and loosening risks.
2. Power Equipment
- Electrical cabinet and transformer terminals, preventing loosening due to thermal expansion from current flow.
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4. Aerospace & Military
1. Aircraft Structures
- Critical areas like engine blades and wing skins, enduring extreme vibrations and temperature changes.
2. Spacecraft
- Fastening satellite and rocket components to prevent failure from high-frequency shocks during launch.
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5. Construction & Furniture
1. Steel Structures in Construction
- Bolt connections in bridges and high-rise buildings (e.g., seismic-resistant designs).
2. Furniture Assembly
- Anti-loosening for moving joints in high-end furniture (office chairs, fitness equipment).
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6. Special Environment Applications
1. High/Low-Temperature Scenarios
- Compensating for metal expansion/contraction in boilers and refrigeration systems.
2. Corrosive Environments
- Stainless steel or coated spring screws in chemical equipment and ships for rust and loosening prevention.
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Key Advantages of Spring Screws
- Anti-Loosening Performance: The spring washer provides continuous tension to counteract vibration-induced loosening.
Simplified Installation: No need for additional washers, reducing assembly steps.
Wide Adaptability: Compatible with various materials (carbon steel, stainless steel, titanium) for diverse needs.
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By selecting appropriate spring screws, the reliability and safety of equipment can be significantly improved, especially in dynamic load scenarios.