Compression Spring Various Size 5-20mm Diameter & 10-100mm Length - Spring Steel

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Compression Spring Various Size 5-20mm Diameter & 10-100mm Length - Spring Steel

Name: Compression Spring Various Size 5-20mm Diameter & 10-100mm Length - Spring Steel
Brand: HomeDIYer
Price: 4.12 USD
Availability: InStock

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By HomeDIYer®

Wire diameter x Outer diameter x Length (mm): 0.9mm x 5mm x 10mm

Amount (pieces): 10 pieces

Price:

$4.12 USD

Stock:

In stock (500 units), ready to be shipped

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Compression Springs 5–20mm OD & 10–100mm Length — Reliable Return Force for Every DIY Build

When a mechanism fails to return, a door won't latch, or a jig loses its repeatable tension, the culprit is almost always an undersized or worn-out compression spring. Makers, hobbyists, and small-workshop technicians who need a dependable stock of compression springs in a wide range of sizes will find this listing covers the most common dimensional combinations in a single place.

Each spring is formed from 0.9 mm wire diameter spring steel, with outer diameters spanning 5 mm to 20 mm (~0.20 in to ~0.79 in) and free lengths from 10 mm to 100 mm (~0.39 in to ~3.94 in). Springs are sold in sets of 10 pieces per variant, making it easy to stock multiple sizes for prototyping or repair work.

Typical applications include 3D-printer bed-leveling assemblies that need consistent Z-axis preload, CNC fixture clamps requiring repeatable clamping force, electronics enclosure latches, RC vehicle suspension tuning, and general mechanical prototyping where a compact compression spring is needed to absorb shock or maintain contact pressure.

⚙️ Compatibility: Suitable for standard spring seats, guide pins, and bores sized to match the selected outer diameter. Verify your housing bore and spring seat dimensions against the variant specs before ordering.

✅ Key Features of These Compression Springs

🔩 Spring Steel Construction

Formed from spring steel wire for consistent elastic return and resistance to permanent set under repeated cycling.

📐 Wide Size Matrix

0.9 mm wire diameter with outer diameters from 5 mm to 20 mm and free lengths from 10 mm to 100 mm — 224 size combinations available.

🔄 Closed & Ground Ends

End coils are closed to provide a flat seating surface, improving load distribution and reducing lateral buckling tendency.

📦 10-Piece Sets

Each variant ships as a set of 10 identical springs, giving you spares for prototyping, repair, or multi-axis builds.

🛡️ Corrosion-Resistant Finish

Surface treatment helps resist light oxidation during storage and use in low-humidity indoor environments.

🎯 Maker & Workshop Ready

Compact dimensions suit 3D-printer beds, CNC fixtures, RC suspension, electronics latches, and general mechanical prototyping.

📐 Technical Specifications — Compression Springs

Wire Diameter	0.9 mm (~0.035 in)
Outer Diameter Range	5 mm – 20 mm (~0.20 in – 0.79 in)
Free Length Range	10 mm – 100 mm (~0.39 in – 3.94 in)
Material	Spring Steel
End Type	See variant options
Spring Rate	See variant options
Surface Finish	See variant options
Quantity per Set	10 pieces
Coil Direction	Right-hand (typical)
Operating Temperature	Contact us to confirm

❓ Frequently Asked Questions

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

Measure the bore or housing that will guide the spring to determine the maximum outer diameter. The free length should be longer than your required compressed length plus the travel distance. As a starting point, select an outer diameter 0.5–1 mm smaller than your guide bore to allow free movement without binding.

What is the wire diameter, and how does it affect spring strength?

All springs in this listing use a 0.9 mm wire diameter. A thicker wire produces a stiffer spring with a higher spring rate, while a thinner wire produces a softer spring. For heavier loads or higher preload requirements, consider a spring with a larger wire diameter from a different listing.

Are these springs corrosion-resistant? Can I use them outdoors?

The springs have a surface treatment that provides light corrosion resistance suitable for dry indoor environments. For outdoor or high-humidity applications, we recommend applying a light coat of machine oil or selecting stainless steel springs. Contact us to confirm suitability for your specific environment.

Are these springs compatible with 3D-printer bed-leveling systems?

Yes. The 5–8 mm outer diameter variants with 10–25 mm free lengths are commonly used for 3D-printer bed-leveling assemblies. Verify the spring seat diameter and screw clearance hole on your printer before selecting a size. The 0.9 mm wire provides moderate stiffness suitable for most FDM bed-leveling applications.

Can I use these springs in RC vehicle suspension or shock absorbers?

These springs are suitable for light-duty RC vehicle suspension tuning where the outer diameter and free length match your shock body dimensions. Select the outer diameter that fits snugly inside your shock body without binding. For high-impact or competitive RC applications, verify the spring rate meets your suspension tuning requirements.

How many springs are included per order, and can I order multiple sizes?

Each variant includes 10 identical springs. To order multiple sizes, simply add each size variant to your cart separately. This makes it easy to stock a range of dimensions for prototyping or repair work without committing to large quantities of a single size.

What is the difference between free length and compressed length?

Free length is the overall length of the spring when no load is applied — this is the dimension listed in the variant name. Compressed length (solid height) is the minimum length when all coils are fully closed. Your working compressed length must remain above the solid height to avoid permanent deformation. If you need help calculating travel, contact us with your load and deflection requirements.

🛒 Select your Wire diameter x Outer diameter x Length (mm) above, then add to cart.

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These o rings are a great for my ear tunnels

These o rings are a great for my ear tunnels, always loosing one here and there, I always have a new ones in the drawer. Being silicone, don't have any reactions compared to standard rubber ones I purchased at hardware stores, plus much less expensive. Purchased 16mm I'd to use on 19mm tunnels, and stay on great, might be able to get away with 17mm rings, but really happy with my choice.

Will never order from these folks again

I waited a long time and that’s all I received was the eyebolt with no threaded rod attached to it

Perfect they are really made well and I used them for my car

Perfect they are really made well and I used them for my car. The only thing I had a great for us. It took three weeks to get here. So shipping was slow.

did not include wing nuts

Hi Scott, thank you for your feedback. We're sorry for any inconvenience caused. Please get in touch with us directly, and we'll assist you. Thanks for shopping with HomeDIYer!

Haven't received the order yet! It's been over

Haven't received the order yet! It's been over 19 days!

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Compression Spring Various Size 5-20mm Diameter & 10-100mm Length - Spring Steel

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Description

Compression Springs 5–20mm OD & 10–100mm Length — Reliable Return Force for Every DIY Build

✅ Key Features of These Compression Springs

📐 Technical Specifications — Compression Springs

❓ Frequently Asked Questions

Compression Spring Various Size 5-20mm Diameter & 10-100mm Length - Spring Steel

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