Compression Spring Steel 1.2mm Wire Dia 14mm - 15mm OD Small Pressure Springs

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Sale price$4.07 USD
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In stock (500 units), ready to be shipped

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Description

Compression Spring 1.2mm Wire Dia — Reliable Small Pressure Springs for Precision DIY Work

When a mechanism fails because a spring loses tension or snaps under load, the entire assembly is compromised. Makers, hobbyists, and workshop technicians who need dependable small compression springs for repetitive-cycle applications will find these 1.2mm wire diameter coil springs a practical, right-sized solution.

Each spring is wound from steel wire with a 1.2mm diameter. Outer diameter options span 14mm (approx. 0.55 in) and 15mm (approx. 0.59 in), with free lengths ranging from 10mm (approx. 0.39 in) up to 305mm (approx. 12.0 in). The closed-end coil construction provides stable seating and consistent load distribution across the full compression stroke.

These compression springs suit a wide range of use cases: replacing worn return springs in small valves and pneumatic actuators, providing preload force in custom jigs and fixtures, and serving as tension elements in DIY robotics or 3D-printer extruder mechanisms where a compact 14–15mm OD small pressure spring is required.

🔧 Compatible with standard spring seats and housings designed for 14mm or 15mm outer diameter compression springs. Verify bore clearance and free length before ordering.

    ✅ Key Features of These Compression Springs

  • 🌀 1.2mm Wire Diameter — Consistent wire gauge across all size variants ensures predictable spring rate and fatigue resistance in cyclic applications.
  • 📏 14mm & 15mm Outer Diameter Options — Two OD families let you match the spring to your housing bore without custom fabrication.
  • 📐 Wide Free-Length Range (10–305mm) — From ultra-short 10mm spacer springs to 305mm full-stroke return springs, one product line covers multiple project needs.
  • 🔩 Closed-End Coil Construction — Flat closed ends provide a stable seating surface, reducing lateral deflection and improving load alignment.
  • ⚙️ Multi-Pack Quantities Available — Order 1, 3, 5, 8, 10, 20, 30, or 50 pieces to match prototype runs or production restocking needs.
  • 🛠️ Broad Application Compatibility — Suitable for valves, actuators, jigs, robotics, 3D printers, and general mechanical assemblies requiring a compact small pressure spring.

📐 Technical Specifications — Compression Springs

Wire Diameter 1.2mm (approx. 0.047 in)
Outer Diameter 14mm (approx. 0.55 in) or 15mm (approx. 0.59 in) — see variant options
Free Length 10mm – 305mm (approx. 0.39 in – 12.0 in) — see variant options
End Type Closed ends
Coil Direction See variant options
Material Steel
Finish / Coating See variant options
Spring Rate See variant options
Load Capacity See variant options
Available Quantities 1, 3, 5, 8, 10, 20, 30, 50 pcs

❓ Frequently Asked Questions

How do I choose the right free length for my application?

Measure the distance between the two spring seats in your assembly when fully extended (unloaded). Select a free length equal to or slightly longer than that measurement. For applications requiring a specific preload force, you may need a longer free length so the spring is partially compressed at rest. Refer to your design's required working load and deflection to confirm the correct length.

What is the difference between the 14mm OD and 15mm OD variants?

The outer diameter determines whether the spring fits inside a housing bore or around a guide rod. The 14mm OD variant fits bores with an inner diameter of approximately 14.5mm or larger, while the 15mm OD variant requires approximately 15.5mm or larger. Choose based on your housing bore size and the clearance needed for smooth compression without binding.

Are these springs corrosion-resistant?

These springs are made from steel wire. Standard steel springs offer moderate corrosion resistance suitable for indoor and dry environments. For applications exposed to moisture, chemicals, or outdoor conditions, consider applying a protective coating or lubricant after installation, or contact us to confirm finish options for your specific use case.

Can I use these springs in a 3D printer extruder or hotend assembly?

Yes. The 14mm and 15mm OD compression springs in shorter free lengths (10–30mm) are commonly used in 3D printer extruder tensioner arms and hotend spring-loaded assemblies. Verify that the spring's OD clears your extruder body bore and that the free length provides the correct preload when compressed to your working height.

How many pieces should I order for a prototype vs. production run?

For prototyping and testing, a pack of 1, 3, or 5 pieces is typically sufficient to validate fit and function. For small production runs or to maintain a working spare inventory, packs of 10, 20, or 30 are cost-effective. The 50-piece pack offers the best per-unit value for ongoing production or high-cycle replacement schedules.

What is the spring rate (stiffness) of these compression springs?

Spring rate depends on wire diameter, outer diameter, free length, and number of active coils. Because free length varies significantly across variants (10mm to 305mm), the spring rate differs per size. Please contact us with your specific size selection and required load/deflection values, and we can provide the corresponding spring rate data.

Are these suitable for valve return spring applications?

Yes. The closed-end coil design and consistent 1.2mm wire diameter make these springs well-suited for small valve return spring applications in pneumatic and hydraulic systems where a compact 14–15mm OD is required. Confirm the required force at compressed length against the spring's load capacity before installation.

🛒 Select your size (Wire Diameter × Outer Diameter × Length) and quantity above, then add to cart.

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