Compression Springs Wire Dia 0.5mm OD 4mm 304 Stainless Steel Vibration Damping

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Compression Springs Wire Dia 0.5mm OD 4mm 304 Stainless Steel Vibration Damping

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SIZE(CSxODxL): 0.5x4x5mm

QTY(pcs): 10Pcs

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$5.93 USD

Stock:

In stock (500 units), ready to be shipped

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Compression Springs Wire Dia 0.5mm OD 4mm — Reliable Vibration Damping for Precision Applications

When a loose spring causes a mechanism to rattle, bind, or fail prematurely, the root cause is almost always a mismatch in wire diameter or outer diameter tolerance. Engineers, hobbyists, and small-batch manufacturers who need a dependable 0.5mm wire / 4mm OD compression spring often struggle to source the right length without ordering oversized industrial lots. These 304 stainless steel compression springs are stocked in 15 length options — from 5mm to 305mm — and sold in flexible pack sizes from 1 to 100 pieces, so you get exactly what your project demands.

Each spring is wound from 304-grade stainless steel wire with a nominal diameter of 0.5mm (≈0.020 in) and an outer diameter of 4mm (≈0.157 in). Available lengths span 5mm (≈0.20 in) through 305mm (≈12.0 in), covering the full range from compact electronic assemblies to longer mechanical linkages. The closed-end coil geometry provides consistent seating and predictable load characteristics across the entire length range.

Typical use cases include vibration-damping mounts in electronics enclosures, return-force elements in jigs and fixtures, preload springs in small pneumatic or hydraulic valves, and tension-balancing components in robotics end-effectors. The corrosion-resistant 304 alloy makes these springs suitable for light-duty outdoor assemblies, laboratory instruments, and food-adjacent equipment where mild moisture exposure is expected.

⚙️ Compatibility: Fits spring seats and guide pins with inner bore ≥4mm. Wire dia 0.5mm; OD 4mm. Verify free length against your compressed and extended travel requirements before ordering.

✅ Key Features of These Compression Springs

🔩304 Stainless Steel Construction — Resists oxidation and mild corrosion, extending service life in humid or lightly wet environments without surface treatment.
📏Precise 0.5mm Wire / 4mm OD Dimensions — Tight dimensional tolerances on wire diameter and outer diameter ensure consistent fit in guide bores and spring pockets.
📐15 Length Options (5mm–305mm) — From ultra-short 5mm (0.20 in) to full-length 305mm (12.0 in), covering a wide range of travel and preload requirements in a single product family.
🛡️Closed-End Coil Geometry — Flat closed ends provide stable seating on spring retainers and reduce lateral deflection under load, improving alignment in precision assemblies.
📦Flexible Pack Quantities (1–100 Pcs) — Order as few as 1 piece for prototyping or up to 100 pieces for small-batch production runs, minimizing excess inventory.
🔄Vibration-Damping Performance — Consistent spring rate across the coil length absorbs and dissipates mechanical vibration, reducing noise and wear in dynamic assemblies.

📐 Technical Specifications — Compression Spring

Material	304 Stainless Steel
Wire Diameter	0.5mm (≈0.020 in)
Outer Diameter (OD)	4mm (≈0.157 in)
Inner Diameter (ID)	≈3mm (≈0.118 in)
Free Length Range	5mm – 305mm (0.20 in – 12.0 in)
End Type	Closed ends
Spring Rate	See variant options
Surface Finish	Natural (uncoated)
Pack Quantity Options	1, 2, 3, 5, 8, 10, 15, 20, 25, 30, 40, 50, 60, 70, 80, 90, 100 Pcs
Application	Vibration damping, return force, preload, mechanical linkages

❓ Frequently Asked Questions

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

Measure the distance between your spring seats when the assembly is at rest (free position). Select a free length that is longer than this distance by the amount of preload travel you need. For vibration-damping applications, a free length 10–30% longer than the installed gap typically provides adequate preload without over-stressing the spring.

What is the load capacity of these springs?

Load capacity depends on the specific free length selected. Shorter springs with the same wire and OD dimensions will have a higher spring rate (stiffer) than longer springs. Exact spring rate values vary by length — please contact us to confirm load data for your chosen length if precise force values are required for your design.

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

Yes. 304 stainless steel provides good resistance to atmospheric corrosion, mild moisture, and many non-chloride chemical environments. These springs are suitable for light outdoor use, laboratory instruments, and food-adjacent equipment. For highly corrosive environments (saltwater, strong acids, or chloride-rich atmospheres), consider 316 stainless steel instead.

What guide pin or bore diameter should I use with these springs?

The outer diameter is 4mm, so a guide bore of 4.2–4.5mm provides a close sliding fit that prevents lateral buckling without binding. For a guide pin inside the spring, use a pin diameter of 2.5–2.8mm to allow free coil movement while maintaining alignment. Always verify clearances with your specific tolerance stack-up.

Can I use these springs in high-temperature applications?

304 stainless steel retains adequate mechanical properties up to approximately 300°C (572°F) for short-term exposure. For continuous elevated-temperature service above 200°C (392°F), spring rate and yield strength may decrease over time. Contact us to confirm suitability if your operating temperature exceeds this range.

How do I select the right pack quantity for my project?

For prototyping or one-off repairs, the 1–5 piece options minimize cost and waste. For small-batch production runs of 10–50 units, the 10–50 piece packs offer the best per-unit value. The 60–100 piece packs are suited for ongoing production or stocking a workshop with a commonly used spring size. Larger packs are priced progressively lower per piece.

What is the difference between the short lengths (5–50mm) and the longer lengths (120–305mm)?

Short lengths (5–50mm) are typically used in compact mechanisms such as electronic switches, small valves, pen mechanisms, and miniature actuators where travel is limited. Longer lengths (120–305mm) are used in larger assemblies such as door latches, industrial jigs, robotic arms, and suspension linkages where extended travel or higher energy storage is needed. Both share the same 0.5mm wire and 4mm OD, so they fit the same guide geometry.

🛒 Select your SIZE(CSxODxL) and QTY above, then add to cart.