Compression Spring Wire Dia 1.5mm OD 8/9/14mm Spring Steel Pressure Coil Springs

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Compression Spring Wire Dia 1.5mm OD 8/9/14mm Spring Steel Pressure Coil Springs

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By HomeDIYer®

Wire Diameter x Outer Diameter: 1.5mm x 8mm

Length: 10mm

Packing QTY (Piece): 10 PCS

Price:

$9.93 USD

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In stock (500 units), ready to be shipped

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Compression Coil Springs — Reliable Spring Steel Pressure Springs for DIY Mechanisms

When a loose-fitting assembly rattles, a return mechanism fails to snap back, or a jig loses its clamping tension mid-run, the culprit is almost always an undersized or worn-out compression spring. Makers, hobbyists, and small-workshop engineers who need a dependable, drop-in replacement — or a purpose-built spring for a new design — will find exactly what they need here.

These compression coil springs are wound from spring steel wire with a diameter of 1.5 mm (0.059 in). Three outer diameter options are available — 8 mm (0.315 in), 9 mm (0.354 in), and 14 mm (0.551 in) — and free lengths range from 10 mm to 120 mm (0.39 in to 4.72 in). Each spring is tightly wound with consistent pitch and squared, ground ends for stable seating.

Typical applications include compression spring replacements for 3D-printer extruder assemblies, return springs in custom CNC fixtures and toggle clamps, pressure elements in DIY pneumatic valve actuators, and load-bearing springs in small automation jigs and robotic end-effectors.

🔧 Compatible with standard spring pockets and bores sized for 8 mm, 9 mm, or 14 mm OD springs. Verify your bore clearance and free-length requirement before ordering.

✅ Key Features of These Compression Coil Springs

🔩Spring Steel Construction — Wound from spring steel wire for consistent elastic return and resistance to fatigue over repeated compression cycles.
📐Three OD Options in One Listing — Choose 8 mm, 9 mm, or 14 mm outer diameter to match your bore or spring pocket without custom fabrication.
📏Wide Length Range — Free lengths from 10 mm to 120 mm let you dial in the exact travel and preload your design requires.
⚙️Squared & Ground Ends — Flat, squared ends provide stable seating on flat surfaces and inside counterbored pockets, reducing lateral buckling.
🔄Consistent Pitch Winding — Uniform coil spacing ensures predictable spring rate across the compression stroke, critical for repeatable clamping and return forces.
📦Multi-Pack Quantities — Available in 5-piece or 10-piece packs so you can stock spares or outfit an entire batch of assemblies in one order.

📐 Technical Specifications — Compression Coil Springs

Wire Diameter	1.5 mm (0.059 in)
Outer Diameter (OD)	8 mm / 9 mm / 14 mm — See variant options
Free Length	10 mm – 120 mm (0.39 in – 4.72 in) — See variant options
Material	Spring Steel
End Type	Squared & Ground
Wind Direction	Right-hand (standard)
Spring Rate	See variant options
Surface Finish	Bare steel (natural)
Packing Quantity	5 PCS or 10 PCS — See variant options

❓ Frequently Asked Questions

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

Measure the inner diameter of your spring pocket or bore, then select a spring OD that is 0.5–1 mm smaller than the bore to allow free movement without binding. For a 9 mm bore, the 8 mm OD spring is typically the right fit. For larger bores around 15 mm, the 14 mm OD option works well.

What free length should I order?

Free length should be longer than your required compressed length plus your desired travel (stroke). A common rule of thumb is: Free Length = Compressed Length + Stroke + 10–20% safety margin. If you need 20 mm of travel and a 10 mm compressed height, a 35–40 mm free length spring is a reasonable starting point.

Are these springs corrosion-resistant?

These springs are made from bare spring steel without a protective coating. They are suitable for dry indoor environments. For applications exposed to moisture, humidity, or mild chemicals, we recommend applying a light coat of machine oil or grease after installation to slow surface oxidation.

What is the spring rate (stiffness) of these compression springs?

Spring rate varies by OD and free length combination. Shorter springs with smaller OD tend to have higher rates; longer springs with larger OD are softer. Exact spring rate data per variant is available on request — please use the Contact Us link if you need confirmed rate values for engineering calculations.

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

Yes. The 1.5 mm wire diameter and 8–9 mm OD options are commonly used in extruder lever arms and hotend spring-loaded assemblies. Select a free length that matches your extruder's spring pocket depth plus the required preload travel. The 10 PCS pack is a practical choice for stocking spares.

What is the difference between the 5 PCS and 10 PCS packs?

Both packs contain identical springs — the only difference is quantity. The 5 PCS pack suits single-project builds or trial fits, while the 10 PCS pack offers better per-unit value for batch assemblies, production jigs, or when you want to keep spares on hand.

Are these springs suitable for use in toggle clamps or workholding fixtures?

Yes. The squared and ground ends provide stable seating on flat surfaces, making these springs well-suited for toggle clamp return mechanisms and spring-loaded workholding fixtures. Choose a free length that gives adequate preload force at your clamped position.

🛒 Select your Wire Diameter × Outer Diameter, Length, and Packing QTY 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 Wire Dia 1.5mm OD 8/9/14mm Spring Steel Pressure Coil Springs

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DIY Expert Support

Description

Compression Coil Springs — Reliable Spring Steel Pressure Springs for DIY Mechanisms

✅ Key Features of These Compression Coil Springs

📐 Technical Specifications — Compression Coil Springs

❓ Frequently Asked Questions

Compression Spring Wire Dia 1.5mm OD 8/9/14mm Spring Steel Pressure Coil Springs

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