Compression Spring Spring Steel Pressure Coil Spring 0.8mm Wire OD 3-15mm DIY

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Sale price$2.84 USD
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In stock (500 units), ready to be shipped

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Description

Compression Spring 0.8mm Wire — Reliable Spring Steel Coil for DIY & Mechanical Use

Finding a compression spring that holds its load without creeping or losing tension is a constant challenge for makers, repair technicians, and workshop builders. These 0.8mm wire compression springs are engineered for consistent force delivery across repeated cycles, making them a dependable choice for hobbyists and small-shop professionals who need precision hardware without over-engineering their budget.

Each spring is formed from spring steel wire with a nominal wire diameter of 0.8mm. The outer diameter (OD) ranges from approximately 3mm to 15mm (roughly 0.12 in to 0.59 in), and free lengths span 5mm to 50mm (approximately 0.20 in to 1.97 in) across the available size variants. The coil body features a tightly wound, open-pitch design typical of standard compression springs.

These springs suit a wide range of applications: replacing worn return springs in small appliances and power tools, providing preload in jigs and fixtures for woodworking or metalworking, and acting as cushioning or ejector elements in 3D-printed enclosures and custom mechanical assemblies. Long-tail use cases include miniature compression spring for electronics enclosure, small coil spring for tool latch mechanism, and steel pressure spring for DIY robotics project.

⚙️ Compatibility: Suitable for standard spring housings and bores sized to match the selected OD variant. Verify free length and OD against your application before ordering. Not intended for high-temperature or corrosive-media environments without additional protective treatment.

✅ Key Features of These Compression Springs

🔩
Spring Steel Construction

Formed from spring steel wire for consistent elastic recovery and resistance to permanent set under repeated compression cycles.

📐
0.8mm Wire Diameter

Uniform 0.8mm wire cross-section across all size variants ensures predictable spring rate and load characteristics within this series.

📏
Wide OD & Length Range

OD from ~3mm to 15mm and free lengths from 5mm to 50mm give you flexibility to match a broad range of bore and travel requirements.

🔄
Open-Coil Design

Open-pitch winding allows controlled deflection and prevents coil bind at moderate compression ratios typical of light-duty mechanical applications.

🛠️
Versatile Application Fit

Works as return springs, ejector springs, preload elements, and cushioning components across DIY, repair, and prototyping contexts.

📦
Single or 10-Pack Quantities

Available in 1 PCS or 10 PCS options so you can order exactly what your project requires without excess stock.

📐 Technical Specifications — Compression Springs

Wire Diameter 0.8mm (0.031 in)
Outer Diameter (OD) See variant options (approx. 3mm–15mm / 0.12–0.59 in)
Free Length See variant options (5mm–50mm / 0.20–1.97 in)
Material Spring Steel
Coil Type Compression (open-pitch)
End Type See variant options
Surface Finish Bare / natural steel
Spring Rate See variant options
Operating Temperature Suitable for standard ambient conditions
Quantity per Order 1 PCS or 10 PCS (select above)

❓ Frequently Asked Questions

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

Measure the bore or housing diameter your spring must fit inside — the spring OD should be slightly smaller than the bore. Then measure the available travel distance and add it to your desired compressed length to estimate the free length you need. Select the variant whose OD and free length most closely match those measurements.

What material are these compression springs made from?

These springs are made from spring steel, a carbon steel alloy specifically processed to provide high yield strength and elastic recovery. This makes it well-suited for cyclic loading in mechanical assemblies, tools, and DIY projects under normal ambient conditions.

Are these springs corrosion-resistant?

Spring steel in its bare form offers moderate corrosion resistance suitable for indoor and dry environments. For applications exposed to moisture, humidity, or mild chemicals, consider applying a light coat of oil or a protective spray after installation. These springs are not recommended for continuous immersion or highly corrosive media without additional treatment.

Can I use these springs in high-temperature environments?

These springs are designed for standard ambient operating conditions. Sustained exposure to elevated temperatures (generally above 120°C / 250°F) can cause stress relaxation and reduce the spring's load-bearing capacity over time. For high-temperature applications, a heat-resistant alloy spring would be more appropriate.

What is the difference between the 1 PCS and 10 PCS options?

Both options contain the same spring in the same size. The 10 PCS pack offers a lower per-unit cost and is ideal when you need spares, are building multiple assemblies, or want to keep replacements on hand. Select the quantity that matches your project needs using the Quantitys option above.

How do I know if this spring will provide enough force for my use case?

Spring force depends on the spring rate (stiffness) and the amount of compression (deflection). For a 0.8mm wire diameter spring in this OD range, the spring rate is relatively light, making these springs suitable for low-to-moderate load applications such as return mechanisms, latches, and light preload fixtures. If you need a specific load value, please contact us to confirm before ordering.

Will these springs fit standard spring plungers or ball-detent mechanisms?

Many standard spring plungers and ball-detent housings accept springs in the 4mm–10mm OD range. Check the bore diameter and depth of your plunger housing against the OD and free length of the variant you select. The 0.8mm wire diameter is compatible with most light-duty plunger mechanisms designed for small-diameter springs.

🛒 Select your Size (OD × Length) and Quantity above, then add to cart.

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