Spring Steel Compression Spring Pressure Coil 1.2mm Wire OD 5-25mm 10-150mm DIY

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Sale price$10.05 USD
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In stock (500 units), ready to be shipped

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Description

Compression Springs with 1.2mm Wire — Reliable Return Force for DIY Mechanisms

When a mechanism fails to return, a latch won't reset, or a jig loses its clamping tension, the culprit is almost always an undersized or worn-out spring. Makers, hobbyists, and small workshop operators who build their own fixtures, automation rigs, or mechanical assemblies need a reliable source of precisely sized compression springs — without ordering industrial minimums.

These compression springs are wound from spring steel wire with a diameter of 1.2mm (approximately 0.047 in). Outer diameter options range from 6mm to 22mm (approx. 0.24–0.87 in), and free lengths span 10mm to 100mm (approx. 0.39–3.94 in), giving you a broad matrix of sizes to match your exact application. Each pack contains 10 pieces of the same size.

Typical use cases include DIY compression spring for drawer slides and cabinet latches, replacement coil springs for 3D printer extruder mechanisms, and pressure coil springs for custom jig clamps and fixture hold-downs in small workshop automation builds.

⚙️ Compatibility: Suitable for general mechanical assemblies, DIY fixtures, light automation, and hobby projects requiring a 1.2mm wire compression spring. Verify OD, free length, and spring rate against your application before ordering.

✅ Key Features of These 1.2mm Wire Compression Springs

🔩 Spring Steel Construction

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

📐 Wide Size Matrix

OD from 6mm to 22mm and free lengths from 10mm to 100mm — over 200 size combinations available to match your exact bore and travel requirements.

🔁 Consistent Return Force

Uniform wire diameter of 1.2mm across all variants ensures predictable spring rate behavior within each size group.

🧰 DIY & Workshop Ready

Sized for common DIY bore diameters. Useful for latches, clamps, extruder mechanisms, valve returns, and light-duty automation fixtures.

📦 10-Piece Packs

Each order ships as a 10-piece set of the selected size — enough for prototyping, replacement, and small-batch builds without over-ordering.

🔍 Closed & Ground Ends (Typical)

Standard compression spring geometry with closed ends for stable seating in counterbores and spring pockets typical of DIY assemblies.

📐 Technical Specifications — Compression Springs

Wire Diameter 1.2mm (0.047 in)
Outer Diameter (OD) 6mm – 22mm (0.24 – 0.87 in) — See variant options
Free Length 10mm – 100mm (0.39 – 3.94 in) — See variant options
Material Spring Steel
End Type Closed ends (typical)
Spring Rate See variant options
Surface Finish See variant options
Pack Quantity 10 PCS per order
Application DIY mechanisms, fixtures, automation, hobby builds

❓ Frequently Asked Questions

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

Measure the bore or pocket that will house the spring. The spring OD should be slightly smaller than the bore diameter — typically 0.5–1mm clearance on each side. For free length, choose a spring that is longer than your required compressed length so it still exerts force at full compression. If you are replacing an existing spring, measure its OD, wire diameter, and free length directly.

What is the spring rate, and how does it affect my project?

Spring rate (stiffness) is determined by wire diameter, OD, and number of active coils. For a given wire diameter of 1.2mm, shorter springs with smaller OD will generally be stiffer. If your application requires a specific load at a specific deflection, contact us to confirm suitability before ordering.

Are these springs corrosion resistant?

Spring steel provides good mechanical properties but has limited inherent corrosion resistance compared to stainless steel. For indoor, dry, or low-humidity environments these springs perform reliably. For outdoor, wet, or chemically exposed environments, consider applying a light coating of oil or selecting stainless steel springs instead.

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

Yes — 1.2mm wire compression springs are commonly used in extruder idler arms and hotend mounts. Select an OD that fits your idler pivot bore and a free length that gives the correct preload at your assembly's compressed position. The 6mm–10mm OD range is most common for extruder applications.

What is the difference between the various OD options?

All variants share the same 1.2mm wire diameter. Larger OD springs have more coils for a given length, which affects spring rate and load capacity. A 6mm OD spring will fit a narrower bore and exert different force than a 20mm OD spring of the same length. Match the OD to your bore size first, then select the length for your required travel.

How many springs do I receive per order?

Each order of a single size variant includes 10 pieces. This is sufficient for most prototyping, repair, and small-batch production needs. If you require larger quantities, please contact us to discuss bulk options.

Can these springs be used for valve return or latch reset applications?

Yes. Compression springs are well suited for valve return, latch reset, button return, and similar applications where a restoring force is needed after actuation. Select a free length and OD that fit your housing, and verify that the spring force at compressed length meets your actuation requirements.

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

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