Compression Spring 1.5mm 304 Stainless Steel Length 15 to 200mm Pressure Spring

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Sale price$4.61 USD
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In stock (500 units), ready to be shipped

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Description

Compression Spring 1.5mm Wire — Reliable Pressure Spring for Mechanical & DIY Applications

When a project demands consistent return force and long-term dimensional stability, undersized or low-grade springs fail fast — leaving mechanisms jammed, valves leaking, or assemblies out of spec. Engineers, makers, and workshop professionals who need a dependable compression spring in a compact wire diameter will find this 1.5mm wire series purpose-built for precision-critical tasks.

Each spring is formed from 1.5mm wire diameter 304 stainless steel, offering a corrosion-resistant, non-magnetic coil body. Outer diameters span 10mm to 25mm (approximately 0.39 in to 0.98 in), and free lengths range from 10mm to 200mm (approximately 0.39 in to 7.87 in), giving you a broad selection matrix to match your exact bore and travel requirements.

Typical use cases include spring-loaded latches and door catches, valve return mechanisms in pneumatic and hydraulic assemblies, electronic enclosure button returns, jig and fixture clamping systems, and custom DIY automation builds where a compact 1.5mm wire compression spring with predictable load characteristics is essential.

⚙️ Compatibility: Suitable for standard spring pockets and bores sized to match the selected outer diameter. Verify free length, compressed length, and spring rate against your application before ordering. Available in outer diameters from 10mm to 25mm and free lengths from 10mm to 200mm.

✅ Key Features of These Compression Springs

  • 🔩1.5mm Wire Diameter — Consistent wire gauge across the full range ensures predictable spring rate and deflection behaviour in compact assemblies.
  • 🛡️304 Stainless Steel Construction — Austenitic 304 grade delivers solid corrosion resistance in humid, wet, and mildly acidic environments without surface treatment.
  • 📐Wide Size Matrix — Outer diameters from 10mm to 25mm (0.39–0.98 in) and free lengths from 10mm to 200mm (0.39–7.87 in) cover a broad range of bore and stroke requirements.
  • 🔄Closed & Ground Ends — Flat-ground ends provide stable seating on spring pockets and plungers, reducing lateral deflection under load.
  • 📦Flexible Pack Quantities — Shorter lengths ship in 5-piece packs for prototyping and small builds; longer lengths available as single pieces for larger-bore applications.
  • 🏭Broad Application Range — Suited for latches, valve returns, button mechanisms, jig fixtures, and custom automation builds requiring a reliable 1.5mm pressure spring.

📐 Technical Specifications — Compression Spring

Wire Diameter 1.5mm (0.059 in)
Material 304 Stainless Steel
Outer Diameter Range 10mm – 25mm (0.39 in – 0.98 in)
Free Length Range 10mm – 200mm (0.39 in – 7.87 in)
End Type See variant options
Spring Rate See variant options
Surface Finish Natural (uncoated stainless)
Coil Direction Right-hand
Pack Quantity 1 Pc or 5 Pcs (see variant options)
Operating Temperature Typically –20°C to +200°C (–4°F to +392°F)

❓ Frequently Asked Questions

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

Measure the bore or pocket that will house the spring and select an outer diameter 0.5–1mm smaller than the bore for a sliding fit. For free length, choose a spring whose free length is at least 10–20% longer than your required compressed length to ensure adequate preload and travel. Use the variant selector above to browse all available OD and length combinations.

What load can a 1.5mm wire compression spring handle?

Load capacity depends on the outer diameter, free length, and number of active coils — all of which vary by variant. Smaller OD and shorter length springs typically carry lighter loads, while larger OD and longer springs carry heavier loads. If you need a specific spring rate or load value, please contact us to confirm before ordering.

Is 304 stainless steel suitable for outdoor or wet environments?

Yes. 304 stainless steel provides solid corrosion resistance against moisture, humidity, and mild chemical exposure, making it suitable for outdoor fixtures, marine-adjacent applications, and food-adjacent equipment. For highly aggressive environments (saltwater immersion, strong acids), consider 316 stainless steel instead.

Are these springs compatible with standard spring plungers and ball-nose plungers?

These are open-coil compression springs, not pre-assembled plunger units. They are compatible with custom spring pockets, guide rods, and plunger housings where the bore matches the selected outer diameter. Verify the OD, free length, and wire diameter against your plunger housing spec before ordering.

What is the difference between the 5-piece and 1-piece pack options?

Shorter free lengths (10mm–50mm) are offered in 5-piece packs, which are ideal for prototyping, testing multiple positions, or small-batch builds. Longer free lengths (60mm–200mm) are sold as single pieces, reflecting the higher material content per spring. Select your preferred pack size in the "Length & Pack Quantity" variant option.

Can I use these springs in high-temperature environments?

304 stainless steel compression springs typically perform reliably from –20°C to +200°C (–4°F to +392°F). For sustained exposure above 200°C, spring relaxation (set) may occur over time, reducing the effective spring force. For higher-temperature applications, consult a spring engineer or consider high-temperature alloy springs.

How do I confirm the spring rate before purchasing?

Spring rate is determined by wire diameter, outer diameter, free length, and number of active coils. Because this product covers a wide size matrix, spring rate varies by variant and is not listed individually. If you require a specific spring rate (N/mm or lbf/in), please contact us with your OD, free length, and load requirements and we will advise on the closest match.

🛒 Select your Wire Diameter, Outer Diameter, and Length & Pack Quantity above, then add to cart.

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