High-strength tension spring made from spring steel — reliable, fatigue-resistant performance for a wide range of applications. Key benefits Durable construction: Made from spring steel to provide consistent tensile strength and long service life. Fatigue-resistant: Designed to retain elasticity and function even after repeated cycles, reducing maintenance and replacements. Smooth, high-quality finish: Flat, polished surface free of sand holes or black spots for a clean appearance and reliable seating in assemblies. Easy to match and install: Standard dimensions allow straightforward selection for repairs, replacements, and new builds. Specifications Material: Spring steel Wire diameter: 2.5 mm Outer diameter: 13 mm Free length: 150 mm Performance and compatibility Provides consistent tension and rebound for mechanical linkages and fastening applications. Suited to general-purpose use where repeated extension and return are required. Dimensions make it compatible with many small-to-medium mechanical assemblies; confirm fit with mating components before installation. Typical use scenarios Replacement spring for garage or utility door components and small gate hardware where steady tension and repeated cycling are needed. Repair or maintenance of industrial or agricultural equipment linkages that require a reliable, fatigue-resistant tension element. Prototyping and DIY mechanical projects such as lever return systems, fixture holds, or hobby machinery that demand a compact, consistent tension spring. Notes for selection Verify wire, outer diameter, and free length against your existing part or assembly to ensure correct fit and function. If precise load or spring rate is required for a specific application, confirm those values with your engineer or supplier before use.