Compression Spring 0.5mm 0.6mm 0.7mm A2 Stainless Steel Small Pressure Springs
Compression Spring 0.5mm 0.6mm 0.7mm A2 Stainless Steel Small Pressure Springs
Compression Spring 0.5mm 0.6mm 0.7mm A2 Stainless Steel Small Pressure Springs
Compression Spring 0.5mm 0.6mm 0.7mm A2 Stainless Steel Small Pressure Springs
Compression Spring 0.5mm 0.6mm 0.7mm A2 Stainless Steel Small Pressure Springs
Compression Spring 0.5mm 0.6mm 0.7mm A2 Stainless Steel Small Pressure Springs
Compression Spring 0.5mm 0.6mm 0.7mm A2 Stainless Steel Small Pressure Springs
Compression Spring 0.5mm 0.6mm 0.7mm A2 Stainless Steel Small Pressure Springs
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Compression Spring 0.5mm 0.6mm 0.7mm A2 Stainless Steel Small Pressure SpringsCompression Spring 0.5mm 0.6mm 0.7mm A2 Stainless Steel Small Pressure SpringsCompression Spring 0.5mm 0.6mm 0.7mm A2 Stainless Steel Small Pressure SpringsCompression Spring 0.5mm 0.6mm 0.7mm A2 Stainless Steel Small Pressure SpringsCompression Spring 0.5mm 0.6mm 0.7mm A2 Stainless Steel Small Pressure SpringsCompression Spring 0.5mm 0.6mm 0.7mm A2 Stainless Steel Small Pressure SpringsCompression Spring 0.5mm 0.6mm 0.7mm A2 Stainless Steel Small Pressure SpringsCompression Spring 0.5mm 0.6mm 0.7mm A2 Stainless Steel Small Pressure Springs

Compression Spring 0.5mm 0.6mm 0.7mm A2 Stainless Steel Small Pressure Springs

HomeDIYer
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By HomeDIYer®

Price:
$3.67 USD
Stock:
In stock (500 units), ready to be shipped

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Description

Compression Spring 0.5–0.7mm Wire — Reliable A2 Stainless Steel Small Pressure Springs

Finding a compression spring that fits a tight space without sacrificing load capacity is a constant challenge for makers, repair technicians, and precision assembly workers. Whether you are restoring a mechanical pen, building a custom jig, or replacing a worn-out spring in a small appliance, these A2 stainless steel compression springs give you the exact geometry you need without guesswork.

Each spring is formed from A2 (304) stainless steel wire with diameters of 0.5 mm, 0.6 mm, or 0.7 mm (approximately 0.020–0.028 in). Outer diameters span 3 mm to 12 mm (approx. 0.12–0.47 in), and free lengths range from 5 mm to 100 mm (approx. 0.20–3.94 in), giving you a broad matrix of size combinations to match your application precisely. Sold in packs of 10 pieces.

Typical use cases include small compression spring replacement for electronics and instruments, miniature spring for 3D printer extruder mechanisms, and stainless steel pressure spring for model engineering and hobby robotics assemblies.

⚙️ Compatibility: Suitable for applications requiring wire diameter 0.5 mm / 0.6 mm / 0.7 mm and outer diameter 3–12 mm. Verify free length and spring rate against your design requirements before ordering.

✅ Key Features of These Compression Springs

🔩
A2 Stainless Steel Construction

Made from A2 (304) grade stainless steel wire, offering solid corrosion resistance in humid, mildly acidic, and outdoor environments without surface coatings.

📐
Precision Wire Diameters

Available in 0.5 mm, 0.6 mm, and 0.7 mm wire diameters — tightly toleranced for consistent spring rate and reliable seating in small bores.

📏
Wide Size Matrix

Outer diameters from 3 mm to 12 mm and free lengths from 5 mm to 100 mm let you dial in the exact spring geometry your project demands.

🔄
Closed & Ground Ends

Springs feature closed ends for stable seating and even load distribution, reducing lateral buckling in confined spring pockets.

📦
Convenient 10-Piece Packs

Each listing ships 10 pieces of the selected size combination — enough for prototyping, small-batch production, or keeping spares on hand.

🛠️
Broad Application Range

Suited for electronics repair, model engineering, 3D printer components, pen mechanisms, medical device prototyping, and general DIY automation projects.

📐 Technical Specifications — Compression Springs

Material A2 (304) Stainless Steel
Wire Diameter 0.5 mm / 0.6 mm / 0.7 mm (see variant options)
Outer Diameter (OD) 3 mm – 12 mm (see variant options)
Free Length 5 mm – 100 mm (see variant options)
End Type Closed ends
Wind Direction Right-hand
Finish Natural stainless (no coating)
Spring Rate See variant options
Packing Quantity 10 PCS per pack
Standard Contact us to confirm

❓ Frequently Asked Questions

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

Wire diameter determines the spring's stiffness (spring rate) and load capacity. A thicker wire (0.7 mm) produces a stiffer spring with higher load capacity, while a thinner wire (0.5 mm) gives a softer, more compliant spring. Match the wire diameter to your required force range and the bore or shaft dimensions of your assembly.

What is the difference between outer diameter and wire diameter?

Wire diameter is the thickness of the steel wire used to coil the spring. Outer diameter (OD) is the overall width of the coiled spring body. When fitting a spring inside a bore, the OD must be smaller than the bore. When fitting over a shaft, the inner diameter (ID = OD minus 2× wire diameter) must be larger than the shaft.

Are these springs corrosion-resistant enough for outdoor or wet environments?

Yes. A2 (304) stainless steel provides solid resistance to atmospheric corrosion, fresh water, and mild chemical exposure. It is not recommended for prolonged immersion in salt water or strong acids — for those environments, A4 (316) stainless steel would be more appropriate.

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

Yes. The 0.5 mm and 0.6 mm wire diameter options with smaller ODs (3–6 mm) are commonly used in extruder idler arms, hotend mounts, and bed-leveling mechanisms. Verify the free length and compressed length against your printer's geometry before ordering.

How do I calculate the compressed length and travel I will get?

The maximum safe travel (deflection) of a compression spring is typically 70–80% of the free length. For example, a 20 mm free-length spring can safely compress approximately 14–16 mm. The solid height (fully compressed) equals the number of coils multiplied by the wire diameter. Contact us if you need specific coil count data for a size.

What should I check before selecting a size for a replacement spring?

Measure the original spring's free length, outer diameter, and wire diameter with calipers. Also note the load it must support and the available travel in your assembly. Match all three dimensions as closely as possible. If the original spring is unavailable for measurement, check the housing bore diameter (for OD reference) and the shaft diameter (for ID clearance).

Do you offer bulk quantities beyond the 10-piece packs?

The standard listing is for 10-piece packs. If you need larger quantities for production or wholesale purposes, please contact us directly through the store's contact page and we will be happy to discuss options.

🛒 Select your size (Wire Diameter × Outer Diameter), Length, and Packing QTY above, then add to cart.

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