Double Coil Spring Washer
The Double Coil Spring Washer, also known as a double coil lock washer, is a type of helical spring washer that designed to prevent loosening in bolted assemblies. It is widely used in utility poles, machinery, and construction applications. These washers feature a double-helical coil design that provides superior locking force and compensates for material shrinkage. They are mechanically galvanized to meet ASTM B695 standards, ensuring corrosion resistance. Installation involves placing them between the nut and bolt head to maintain tension and prevent vibration-induced loosening. Their beveled ends enhance flexibility and durability.
Double Coil Spring Washer is compatible with bolt and nut assemblies in utility poles, wood structures, and industrial equipment. They are available in sizes ranging from 3/8 to 7/8 inches for various applications. Custom sizes can be manufactured to meet specific project requirements. These washers are ideal for environments where high vibration or thermal expansion occurs. Their mechanical properties ensure reliable performance over extended periods.
Key Features:
• Double-helical coil design for superior locking force.
• Mechanically galvanized for corrosion resistance.
• Beveled ends for increased flexibility.
• Available in sizes from 3/8 to 7/8 inches.
• Customizable to meet specific project needs.
Frequently Asked Questions (FAQ)
What is a Double Coil Spring Washer?
A Double Coil Spring Washer is a type of lock washer designed to prevent loosening in bolted assemblies. It features two helical coils that apply tension, maintaining a secure connection between the bolt and nut, even under vibration or thermal expansion.
What are Double Coil Spring Washers used for?
They are commonly used in utility pole assemblies, machinery, and various industrial applications to compensate for wood shrinkage, vibration, and thermal changes. They ensure that nuts remain tightly fastened, preventing assembly failure.
What materials are Double Coil Spring Washers made of?
These washers are typically made from high-quality steel, often mechanically galvanized or hot-dip galvanized to meet ASTM standards like B695. This ensures corrosion resistance and durability in harsh environments.
How does a Double Coil Spring Washer work?
The washer creates tension between the nut and bolt, which counteracts loosening forces caused by vibration, movement, or thermal expansion. Its double-coil design provides superior locking performance compared to single-coil washers.
What are the standard sizes of Double Coil Spring Washers?
Common sizes range from 3/8 inch to 7/8 inch in diameter. As a leading manufacturer, Rax Industry offers custom sizes and configurations to meet specific customer requirements.
What is the difference between single-coil and double-coil spring washers?
Double-coil washers provide higher tension and better locking capabilities compared to single-coil washers. They are ideal for applications with greater vibration or movement.
Are Double Coil Spring Washers suitable for high-vibration environments?
Yes, their design makes them highly effective in high-vibration environments, such as machinery, automotive, and construction applications, where maintaining bolt tension is critical.
Can Double Coil Spring Washers be used with galvanized bolts?
Yes, they are often designed with an oversized inner diameter to accommodate galvanized bolts, ensuring compatibility and effective performance in utility pole and other industrial applications.
Where can I purchase Double Coil Spring Washers?
Rax Industry is a leading manufacturer and supplier of Double Coil Spring Washers. We offer standard and custom sizes to meet diverse application needs. Contact us for more details.
