Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm
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Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mmCompression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mmCompression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mmCompression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mmCompression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mmCompression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mmCompression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mmCompression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mmCompression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mmCompression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mmCompression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mmCompression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mmCompression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 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Compression Spring Pressure Springs, Wire Dia 4-5mm, OD 20-80mm, Length 300mm

HomeDIYer
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By HomeDIYer®

Price:
$14.08 USD
Stock:
In stock (500 units), ready to be shipped

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Description

Compression Springs for DIY Automation — Reliable Pressure Control in Every Coil

When a project demands consistent return force — whether you're building a custom jig, repairing a mechanical assembly, or designing a motion-control fixture — finding the right compression spring in the right size shouldn't slow you down. These compression pressure springs are engineered for makers, small workshop operators, and engineering students who need a broad size selection without ordering from a catalog that takes weeks to arrive.

Each spring is a helical compression spring wound from round steel wire. Wire diameters span 4 mm to 5 mm (approximately 0.157 in to 0.197 in), outer diameters range from 20 mm to 80 mm (approximately 0.79 in to 3.15 in), and the free length is 300 mm (approximately 11.81 in). The coil body is finished in a natural steel tone typical of cold-wound spring steel.

These compression springs suit a wide range of applications: providing return force in DIY linear actuators and pneumatic valve assemblies, acting as buffer elements in 3D-printer Z-axis leveling systems, and serving as load-bearing components in custom furniture hardware or mechanical linkage prototypes. Long-tail use cases include spring-loaded clamp mechanisms, robotics end-effector compliance, and educational physics demonstration rigs.

⚙️ Compatibility Note: Verify inner diameter clearance against your guide rod or housing bore before ordering. Wire diameter and outer diameter determine spring rate — select your variant carefully to match your load requirements.

✅ Key Features of These Compression Pressure Springs

  • 📐Wide Size Range — Wire diameters from 4 mm to 5 mm and outer diameters from 20 mm to 80 mm cover a broad spectrum of force and clearance requirements in a single product listing.
  • 📏300 mm Free Length — A generous 300 mm (11.81 in) free length allows the spring to be cut or used as-is, giving flexibility for both short-stroke and longer-travel applications.
  • 🔩Round Wire Helical Construction — Cold-wound helical coil geometry delivers consistent spring rate along the compression axis, minimizing lateral buckling under load.
  • 🛠️Versatile Application Fit — Suitable for machinery guards, jig fixtures, valve return mechanisms, robotics compliance joints, and educational lab setups requiring repeatable elastic force.
  • 🔄Multiple Variant Options — Choose your exact wire diameter × outer diameter combination from the variant selector to match your design spec without over-engineering.
  • 📦Sold Individually or in Sets — Available in 1-piece quantities so you can prototype with a single spring before committing to a larger build quantity.

📐 Technical Specifications — Compression Springs

Wire Diameter 4 mm / 4.5 mm / 5 mm (see variant options)
Outer Diameter (OD) 20 mm – 80 mm (see variant options)
Free Length 300 mm (11.81 in)
Coil Type Helical compression, round wire
Material Spring steel (cold-wound)
Finish Natural steel
Spring Rate See variant options
End Type See variant options
Quantity per Order 1 Pcs (per variant selected)

❓ Frequently Asked Questions

How do I choose the right outer diameter for my application?

Measure the inner diameter of your housing or the outer diameter of your guide rod. The spring's inner diameter (OD minus twice the wire diameter) must clear the guide rod with a small gap — typically 0.5–1 mm — to prevent binding. The spring's OD must fit inside the housing bore with similar clearance. Use the variant selector to pick the OD that satisfies both constraints.

What is the difference between the 4 mm, 4.5 mm, and 5 mm wire diameter options?

Wire diameter directly affects spring stiffness (spring rate) and load capacity. A thicker wire (5 mm) produces a stiffer spring that can carry more load before reaching solid height, while a thinner wire (4 mm) yields a softer spring suited to lighter loads and finer force control. Choose based on the force range your application requires.

Are these springs corrosion-resistant?

These springs are made from cold-wound spring steel with a natural steel finish. Spring steel offers good mechanical properties but is not inherently corrosion-resistant in wet or chemically aggressive environments. For outdoor or humid applications, consider applying a light coat of oil or grease, or contact us to confirm if a coated variant is available.

Can I use these springs in a 3D printer or CNC machine?

Yes. Compression springs in the 4–5 mm wire diameter range are commonly used in 3D printer bed-leveling assemblies, Z-axis anti-backlash mounts, and CNC router dust-shoe return mechanisms. Verify that the OD fits your existing spring pocket and that the free length (300 mm) can be compressed to your required working length without exceeding the solid height.

How do I determine if the spring rate is suitable for my load?

Spring rate (k) is calculated as the load divided by the deflection: k = F / x. Estimate the force your application needs at the working deflection, then compare to the spring's rated load at that compression. If you need a specific spring rate value, contact us with your wire diameter, OD, and free length selection and we can provide guidance.

What is the solid height of these springs?

Solid height depends on the number of active coils and the wire diameter. It varies by variant (wire diameter × OD combination). As a conservative estimate, solid height is typically the wire diameter multiplied by the total number of coils. Contact us to confirm the solid height for your specific variant before designing a mechanism with a hard stop.

Can I order a custom length or quantity?

The standard listing offers 300 mm free length in 1-piece quantities. If you need a different free length, a different quantity pack, or a bulk order for production use, please contact us through the store's contact page and we will advise on available options.

🛒 Select your Wire Diameter × Outer Diameter above, then add to cart.

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