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When a standard spring is too bulky and a flimsy coil won't hold its load, engineers and DIY builders reach for a purpose-sized compression spring. These 0.6mm wire diameter compression springs are designed for hobbyists, electronics assemblers, model makers, and mechanical engineers who need reliable spring force in compact assemblies where every millimetre counts.
Each spring is formed from A2 (304) stainless steel wire with a diameter of 0.6mm (approximately 0.024 in). Outer diameters span 4mm to 12mm (roughly 5/32 in to 15/32 in), and free lengths range from 5mm to 50mm (approximately 3/16 in to 2 in). Sold in packs of 10 or 50 pieces depending on the variant selected.
Typical use cases include small electronics enclosures requiring tactile button return force, precision instrument mechanisms needing consistent preload, miniature valve assemblies in fluid control systems, and hobby robotics or RC model builds where lightweight spring elements are essential.
Made from A2 (304) grade stainless steel wire, offering solid corrosion resistance in indoor, humid, and mildly corrosive environments — suitable for long-term use in mechanical assemblies.
The 0.6mm wire gauge delivers a fine, consistent coil profile ideal for compact mechanisms where space is limited and spring rate accuracy matters.
Outer diameters from 4mm to 12mm and free lengths from 5mm to 50mm — choose the exact combination that fits your application without sourcing from multiple suppliers.
Uniform wire diameter and coil pitch across the range ensures repeatable deflection behaviour, critical for assemblies requiring predictable preload or return force.
Available in packs of 10 or 50 pieces per variant — ideal for prototyping in small batches or stocking up for production runs and repair kits.
Standard compression spring end style provides flat seating surfaces for stable load transfer against spring seats, plungers, and housing shoulders.
| Wire Diameter | 0.6mm (approx. 0.024 in) |
|---|---|
| Material | A2 Stainless Steel (304) |
| Outer Diameter Range | 4mm – 12mm (approx. 5/32 in – 15/32 in) |
| Free Length Range | 5mm – 50mm (approx. 3/16 in – 2 in) |
| Quantity per Pack | 10 pcs or 50 pcs (see variant options) |
| End Type | Closed ends (typical for this wire gauge) |
| Spring Rate | See variant options |
| Surface Finish | Natural stainless (no coating) |
| Coil Direction | Right-hand wound (standard) |
| Operating Temperature | Typically –20°C to +150°C (–4°F to +302°F) |
| Corrosion Resistance | Suitable for indoor and mildly humid environments |
Measure the bore or housing your spring will sit in and select an outer diameter slightly smaller to allow free movement. For the free length, choose a spring that is longer than your required compressed length — the difference determines available deflection. If you need a specific spring rate, contact us to confirm before ordering.
A2 stainless steel (also known as 304 grade) contains approximately 18% chromium and 8% nickel, forming a passive oxide layer that resists rust and oxidation. It performs well in indoor environments, light moisture exposure, and mild chemical contact. For saltwater or strongly acidic environments, A4 (316) grade would be more appropriate.
A2 stainless steel offers good resistance to atmospheric moisture and light rain exposure. However, prolonged immersion in saltwater or exposure to chlorinated water may cause surface staining over time. For marine or pool environments, consider A4 stainless steel springs instead.
Yes. The outer diameters listed (4mm–12mm) are metric dimensions and are designed to work with standard metric guide pins, plungers, and spring seats. Always verify that your guide pin OD is smaller than the spring's inner diameter (outer diameter minus twice the wire diameter) to ensure free travel without binding.
Both pack sizes contain identical springs — the same wire diameter, outer diameter, and free length. The 10-piece pack suits prototyping, repair, or low-volume builds. The 50-piece pack offers a lower per-unit cost and is suited for production runs, stocking spare parts, or larger assembly projects.
Spring rate (k) is calculated using the formula: k = (G × d⁴) / (8 × D³ × n), where G is the shear modulus of stainless steel (approximately 69 GPa), d is the wire diameter (0.6mm), D is the mean coil diameter, and n is the number of active coils. For a quick estimate, contact us with your specific outer diameter and free length and we can provide guidance.
These springs feature closed ends, which is the standard end style for this wire gauge range. Closed ends provide a flat seating surface that distributes load evenly against spring seats and housing shoulders, reducing lateral deflection during compression.
