Small Micro Compression Spring Stainless Steel 0.1mm Wire Miniature Precision

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Small Micro Compression Spring Stainless Steel 0.1mm Wire Miniature Precision

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Size: 0.1mm X 0.8mm X 5mm

Quantitys: 10 PCS

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$4.01 USD

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In stock (500 units), ready to be shipped

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Small Micro Compression Springs — Stainless Steel Miniature Precision for Tight-Tolerance Applications

When your project demands reliable elastic force in an extremely confined space, standard springs simply won't fit. Engineers, watchmakers, medical device assemblers, and electronics hobbyists working with micro-scale mechanisms need compression springs that hold precise dimensions without sacrificing load consistency. These small micro compression springs are engineered for exactly those demanding scenarios.

Each spring is formed from stainless steel wire with a diameter of 0.1 mm or 0.15 mm, wound to outer diameters ranging from 0.8 mm to 2.0 mm (approximately 0.031–0.079 in) and free lengths from 5 mm to 25 mm (approximately 0.197–0.984 in). The closed-end coil geometry provides stable seating and consistent spring rate across the compression stroke.

Typical use cases include miniature pen mechanisms and retractable stylus assemblies, precision instrument latches and micro-switch actuators, and small-batch robotics or automation fixtures requiring repeatable micro-force elements. The wide size matrix — selectable by wire diameter, outer diameter, and free length — makes these springs a versatile stock item for prototype and production runs alike.

⚙️ Compatibility: Suitable for spring seats or bores sized to match the selected outer diameter. Verify bore clearance and spring pocket depth against your chosen variant before ordering.

✅ Key Features of These Micro Compression Springs

🔩Stainless Steel Construction — Corrosion-resistant alloy maintains spring properties in humid, mildly acidic, or wash-down environments without surface treatment.
📐Ultra-Fine Wire Diameter — Available in 0.1 mm and 0.15 mm wire gauges, enabling use in micro-scale assemblies where conventional springs are too large.
🎯Wide Size Matrix — Outer diameters from 0.8 mm to 2.0 mm and free lengths from 5 mm to 25 mm give you precise dimensional control for your design.
🔄Closed-End Coil Design — Flat closed ends provide stable seating against spring pockets and plungers, reducing lateral deflection under load.
📦Flexible Pack Quantities — Choose 10 PCS for prototyping or 100 PCS for small-batch production runs, keeping inventory lean and cost-effective.
🏭Consistent Coil Pitch — Uniform winding pitch across the full free length ensures repeatable spring rate and predictable deflection behavior in precision assemblies.

📐 Technical Specifications — Micro Compression Springs

Material	Stainless Steel
Wire Diameter	0.1 mm or 0.15 mm (see variant options)
Outer Diameter (OD)	0.8 mm – 2.0 mm (see variant options)
Free Length	5 mm – 25 mm (see variant options)
End Type	Closed ends
Coil Direction	See variant options
Spring Rate	See variant options
Surface Finish	Natural stainless (no coating)
Pack Quantity	10 PCS or 100 PCS
Application	Miniature mechanisms, instruments, electronics, robotics

❓ 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 an OD that is slightly smaller — typically 0.05–0.1 mm of clearance is sufficient for micro springs. If the spring seats on a pin, the inner diameter (ID ≈ OD minus 2× wire diameter) should be slightly larger than the pin diameter to allow free movement.

What is the difference between 0.1 mm and 0.15 mm wire diameter?

A thicker wire (0.15 mm) produces a stiffer spring with a higher spring rate, meaning it requires more force to compress by the same distance. The 0.1 mm wire yields a softer, more compliant spring. Choose 0.1 mm for very light-load applications such as stylus tips or micro-switch returns, and 0.15 mm where a firmer return force is needed.

Are these springs corrosion-resistant?

Yes. The springs are made from stainless steel, which provides good resistance to oxidation and mild corrosion in humid or lightly acidic environments. They are not rated for immersion in strong acids or chloride-rich solutions. For such environments, contact us to confirm suitability.

Can I use these springs in medical devices or food-contact equipment?

The stainless steel alloy is commonly used in precision instruments and light-duty medical components. However, specific regulatory compliance (e.g., FDA, ISO 13485) depends on your application and jurisdiction. Please contact us to confirm material certification documentation before use in regulated applications.

How do I determine the correct free length for my design?

The free length should be longer than your required working length. A common guideline is to allow at least 20–30% compression travel from free length to working length, while ensuring the spring does not reach solid height (coil bind) under maximum load. Measure your available pocket depth and required preload to select the appropriate free length from the variant options.

What is the minimum order quantity and are bulk discounts available?

These springs are available in packs of 10 PCS (ideal for prototyping and testing) or 100 PCS (suited for small-batch production). The 100 PCS option offers a lower per-unit cost. For larger volume requirements beyond 100 pieces, please contact us directly to discuss pricing.

How do I verify compatibility before purchasing?

Check three key dimensions: (1) outer diameter vs. your bore or pocket ID, (2) free length vs. your available pocket depth, and (3) wire diameter vs. your required spring rate. If you are unsure, order the 10 PCS sample pack of your target size first to validate fit and function before committing to the 100 PCS quantity.

🛒 Select your size and quantity above, then add to cart.