The tension spring is wound by wires of various materials, and each ring is tightly wound, and both ends are formed into a hook shape for assembly, and are elongated when subjected to force. Generally speaking, it is mostly in the form of a circular section, and the shape of the end is varied depending on the application. Round hooks (English hooks), square hooks, semi-circular hooks (German hooks), U-shaped hooks, movable hooks, etc. The breadth of application is second only to the compression spring.

Application: Steam locomotive parts spring, sports equipment spring, lamp spring, curtain hardware, jewelry spring, pump spring

Production range: material diameter0.1mm (0.0039") ~ 8.0mm (0.315")

Conical tail without hook

Oblique hook

Double loop hook

Pull hook

German hook_ellipse hook

German hook

Special hook (2)

Duckbill hook

Special hook (1)

Square hook

Triangular hook

Rotating activity hook_ before stretching

Rotating activity hook_ after stretching

Unequal diameter & round hook tightly 2 turns

Side hook

Zero initial tension tension spring

German hook_ellipse hook

Pull hook with removable screw