Stainless Steel Compression Spring Various Size 7.5-12mm Dia & 5-50mm Length

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Stainless Steel Compression Spring Various Size 7.5-12mm Dia & 5-50mm Length

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By HomeDIYer®

Wire diameter x Outer diameter x Length (mm): 0.6mm x 7.5mm x 5mm

Amount (pieces): 10 pieces

Price:

$12.55 USD

Stock:

In stock (500 units), ready to be shipped

Quantity:

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Stainless Steel Compression Springs — Precise Sizing for DIY, Robotics & Mechanical Assemblies

When a spring fails mid-project — whether in a jig, a fixture, or a small automation mechanism — the entire assembly stalls. Engineers, makers, and repair technicians who need a reliable, dimensionally consistent compression spring in small-to-medium outer diameters will find this range covers the most common sizes in a single listing.

Each stainless steel compression spring in this listing features a 0.6 mm wire diameter with outer diameters ranging from 7.5 mm to 12 mm (approximately 0.30 in to 0.47 in) and free lengths from 5 mm to 50 mm (approximately 0.20 in to 1.97 in). The springs are formed from stainless steel wire, offering inherent corrosion resistance without additional coating. Sold in sets of 10 pieces per order.

Typical applications include return-force mechanisms in 3D printer extruder assemblies, plunger and detent springs in small tooling fixtures, valve and actuator springs in light-duty pneumatic or hydraulic circuits, and replacement springs for consumer electronics or appliance repair where a compact, corrosion-resistant compression spring is required.

🔩 Compatible with standard spring seats and bores sized for 7.5–12 mm OD compression springs. Verify free length and spring rate against your application before ordering.

✅ Key Features of These Stainless Steel Compression Springs

🧲

Stainless Steel Construction

Formed from stainless steel wire for corrosion resistance in humid, wet, or mildly corrosive environments without surface treatment.

📐

Wide Size Matrix

Outer diameters from 7.5 mm to 12 mm and free lengths from 5 mm to 50 mm — one listing covers dozens of common compression spring sizes.

🔬

0.6 mm Wire Diameter

Consistent 0.6 mm wire gauge across all variants ensures predictable spring rate and deflection characteristics for light-to-medium load applications.

📦

10-Piece Sets

Each order ships as a set of 10 identical springs, giving you spares for prototyping, batch builds, or maintenance stock.

⚙️

Open-Coil Design

Standard open-coil compression geometry allows linear deflection under axial load, suitable for return, cushioning, and clamping force applications.

🛠️

Broad Application Fit

Suited for robotics, 3D printing, tooling fixtures, appliance repair, and light mechanical assemblies where a compact compression spring is needed.

📐 Technical Specifications — Compression Spring

Material	Stainless Steel
Wire Diameter	0.6 mm
Outer Diameter Range	7.5 mm – 12.0 mm (approx. 0.30 in – 0.47 in)
Free Length Range	5 mm – 50 mm (approx. 0.20 in – 1.97 in)
Spring Type	Compression (Open Coil)
End Type	See variant options
Spring Rate	See variant options
Surface Finish	Natural stainless (no coating)
Quantity per Order	10 pieces
Corrosion Resistance	Yes — stainless steel

❓ Frequently Asked Questions

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

Measure the bore or spring seat your spring must fit into — the spring's outer diameter should be slightly smaller than the bore. For free length, measure the uncompressed gap the spring must fill, then add the required travel distance. Select the variant whose OD and free length best match those measurements.

What load can these compression springs handle?

With a 0.6 mm wire diameter, these springs are designed for light-to-medium axial loads. Exact spring rate varies by outer diameter and free length — shorter, wider springs will be stiffer. If you need a specific spring rate (N/mm or lbf/in), contact us to confirm before ordering.

Are these springs corrosion-resistant?

Yes. The springs are made from stainless steel wire, which provides inherent corrosion resistance in humid, wet, and mildly corrosive environments. No additional plating or coating is applied, so there is no risk of coating delamination over time.

Are these springs compatible with standard spring seats and bores?

Yes, provided the bore or seat is sized for the selected outer diameter. The OD range of 7.5–12 mm covers many standard mechanical and electronic assembly spring pockets. Always verify the bore diameter, free length, and required spring rate against your design before ordering.

Can I use these springs outdoors or in wet environments?

Stainless steel offers good resistance to moisture and mild corrosion, making these springs suitable for outdoor or damp environments in most cases. For highly aggressive chemical environments (e.g., salt spray, strong acids), verify the specific stainless alloy grade meets your requirements.

Why should I order 10 pieces instead of a single spring?

Springs are consumable components — they fatigue, lose tension, or get lost during assembly. Having a set of 10 means you have spares on hand for prototyping iterations, batch production, or future maintenance without waiting for a reorder. It also reduces per-unit cost compared to single-piece sourcing.

What is the difference between the various outer diameter options?

All variants share the same 0.6 mm wire diameter. A larger outer diameter with the same wire gauge results in a lower spring rate (softer spring), while a smaller outer diameter produces a higher spring rate (stiffer spring) for the same free length. Choose based on the stiffness and fit your application requires.

🛒 Select your wire diameter × outer diameter × length above, then add to cart.