Compression Spring Various 1-1.2mm Diameter & 6-20mm Length Pressure Small

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Sale price$5.02 USD
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In stock (500 units), ready to be shipped

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Description

Compression Spring 1–1.2mm Wire Diameter — Reliable Elastic Return for Precision Applications

When a mechanism fails to return to its resting position, the culprit is almost always a worn or incorrectly sized compression spring. Makers, electronics repair technicians, and workshop hobbyists who need a dependable small compression spring in a precise wire diameter and free length will find this range covers the most common sizes in a single listing.

Each spring is formed from round steel wire with a wire diameter of 1mm or 1.2mm, an outer diameter (OD) ranging from 6mm to 20mm (approximately 0.24 in to 0.79 in), and a free length from 10mm to 100mm (approximately 0.39 in to 3.94 in). The silver finish variants carry a bright zinc-plated or polished surface; the black finish variants feature a black oxide or phosphate coating for reduced light reflection. Springs are sold in packs of 10.

Typical use cases include replacing return springs in push-button switches and tactile mechanisms, providing preload in small jigs and fixtures, acting as buffer springs in 3D-printer extruder assemblies, and serving as tension-relief elements in compact electronic enclosures — all scenarios where a small compression spring with a controlled free length is critical.

⚙️ Compatibility: Suitable for spring seats or bores sized to match the listed outer diameter. Verify the OD, wire diameter, and free length against your application before ordering. Closed-end, ground or unground ends — see variant options for exact end type.

✅ Key Features of These Compression Springs

  • 🔩Wide Size Matrix — Wire diameters of 1mm and 1.2mm paired with ODs from 6mm to 20mm and free lengths from 10mm to 100mm give you over 200 size combinations in one listing.
  • 🎨Two Finish Options — Silver (bright/zinc) for standard indoor use; Black (oxide/phosphate) for low-reflectance or aesthetic requirements.
  • 📦Pack of 10 — Each order ships as a pack of 10 identical springs, giving you spares for prototyping, repair, or batch assembly.
  • 📐Consistent Coil Geometry — Uniform pitch and coil count across the free length ensure repeatable spring rate and predictable deflection behaviour.
  • 🛡️Corrosion-Resistant Finish — Surface treatment on both colour variants provides a barrier against light moisture and oxidation in typical indoor environments.
  • 🔄Versatile Application Range — Suited for push-button returns, jig preloads, 3D-printer components, electronic enclosures, and other small-mechanism spring seats.

📐 Technical Specifications — Compression Springs

Wire Diameter 1mm or 1.2mm (see variant options)
Outer Diameter (OD) 6mm – 20mm (0.24 in – 0.79 in)
Free Length 10mm – 100mm (0.39 in – 3.94 in)
Material Steel (spring steel alloy, typically 65Mn or equivalent)
Finish / Colour Silver (bright/zinc-plated) or Black (oxide/phosphate)
End Type See variant options
Spring Rate See variant options
Packing Quantity 10 pieces per pack
Winding Direction Right-hand (standard)
Operating Temperature Typically –20°C to +120°C (–4°F to +248°F)

❓ Frequently Asked Questions

How do I choose the right size compression spring for my application?

Match three key dimensions: outer diameter (OD) to your spring seat or bore, free length to the uncompressed space available, and wire diameter to the load requirement. A thicker wire (1.2mm) produces a stiffer spring than a 1mm wire at the same OD and length. Select your size from the Sizes variant dropdown above, which lists dimensions in the format Wire×OD×Length (mm).

What is the difference between the Silver and Black finish variants?

The Silver finish uses a bright or zinc-plated surface that offers standard corrosion resistance for indoor environments. The Black finish uses a black oxide or phosphate coating that reduces light reflection and provides a similar level of corrosion protection. Both are suitable for typical workshop and electronics applications; choose Black if aesthetics or low reflectance matter in your build.

Are these springs strong enough for mechanical return mechanisms?

Yes, for light-to-medium duty return applications. Springs in this size range (1–1.2mm wire, 6–20mm OD) are designed for small mechanisms such as push-button returns, valve actuators, and jig preloads. For heavy-duty industrial applications requiring precise load ratings, please contact us to confirm the spring rate before ordering.

How corrosion-resistant are these compression springs?

Both finish variants provide light corrosion resistance suitable for dry indoor environments. They are not rated for continuous outdoor exposure, salt spray, or immersion in liquids. If your application involves moisture or chemicals, consider adding a protective coating after installation or contact us to discuss material alternatives.

Can I use these springs in 3D printers or electronics projects?

Yes. The small wire diameters (1–1.2mm) and compact OD range (6–20mm) make these springs well suited for 3D-printer extruder assemblies, bed-levelling mechanisms, PCB test fixtures, and compact electronic enclosures. Select the free length closest to your uncompressed gap to ensure the spring operates within its elastic range.

How many springs are included per order?

Each order includes 10 springs of the selected size and colour. This gives you spares for prototyping, replacements during assembly, or batch production runs. If you need larger quantities, please contact us for bulk pricing options.

What material are these compression springs made from?

These springs are made from spring steel, typically a 65Mn (manganese steel) or equivalent alloy, which provides the elastic properties needed for repeated compression and extension cycles. The surface is then treated with either a silver (zinc/bright) or black (oxide/phosphate) finish for corrosion protection.

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

 

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