1.4mm Wire Dia Compression Spring 15-25mm Dia 10-200mm Length A2 Stainless Steel

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1.4mm Wire Dia Compression Spring 15-25mm Dia 10-200mm Length A2 Stainless Steel

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Wire Dia x Outer Dia x Length: 1.4x15x10mm

Pack of Quantity(Pcs): 5

Price:

$3.93 USD

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In stock (500 units), ready to be shipped

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1.4mm Wire Compression Spring — A2 Stainless Steel, Multi-Size Selection

When a standard spring fails mid-project or corrodes in a damp environment, the entire assembly is compromised. Engineers, makers, and maintenance technicians who need a reliable, corrosion-resistant compression spring in precise dimensions will find this range covers the most common metric sizes in one catalog.

Each spring is formed from A2 (304) stainless steel wire with a diameter of 1.4mm. The outer diameter spans 15–25mm (approximately 0.59–0.98 in) and the free length ranges from 10mm to 200mm (approximately 0.39–7.87 in), with a closed and ground end configuration typical of precision compression springs. Packs are available in quantities of 1, 5, 10, 20, and 50 pieces.

Typical use cases include light-load return mechanisms in jigs and fixtures, valve and plunger assemblies requiring corrosion resistance, robotics and automation prototyping where consistent spring force is needed, and small-batch manufacturing of consumer or industrial hardware.

⚙️ Compatibility: Suitable for metric spring seats and bores. Verify bore diameter against the selected outer diameter and confirm free length against your compressed travel requirement before ordering.

✅ Key Features of These 1.4mm Wire Compression Springs

🔩 A2 Stainless Steel Construction

Formed from 304-grade stainless steel wire for reliable corrosion resistance in humid, wet, or mildly acidic environments.

📐 Wide Size Matrix

Wire diameter fixed at 1.4mm; outer diameters from 15mm to 25mm; free lengths from 10mm to 200mm — covering dozens of metric combinations in one listing.

📦 Flexible Pack Quantities

Order as few as 1 piece for prototyping or up to 50 pieces for small-batch production runs, with per-unit cost scaling accordingly.

⚖️ Consistent Spring Rate

Uniform wire diameter and coil geometry deliver repeatable load-deflection characteristics across the full size range.

🛡️ Closed and Ground Ends

End treatment provides a flat bearing surface for stable seating in spring pockets and against flat plates without additional machining.

🔄 Broad Application Compatibility

Suited for return springs, tensioning mechanisms, valve springs, and general-purpose compression duties in DIY, robotics, and light industrial assemblies.

📐 Technical Specifications — Compression Spring

Material	A2 Stainless Steel (304)
Wire Diameter	1.4 mm (0.055 in)
Outer Diameter	15 mm – 25 mm (0.59 in – 0.98 in)
Free Length	10 mm – 200 mm (0.39 in – 7.87 in)
End Type	Closed and Ground
Spring Rate	See variant options
Max Load	See variant options
Surface Finish	Natural (uncoated stainless)
Pack Quantity	1 / 5 / 10 / 20 / 50 pcs
Standard	See variant options

❓ Frequently Asked Questions

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

Measure the bore or spring pocket your spring must fit inside. The outer diameter of the spring should be 0.5–1.5mm smaller than the bore to allow free movement without binding. For a guide rod application, the inner diameter (outer diameter minus twice the wire diameter) must clear the rod with a small gap. Select your outer diameter from the variant options accordingly.

What free length should I select?

Free length is the uncompressed length of the spring. You need a free length that is longer than your installed (pre-load) length and long enough to provide the required travel. A common rule is: free length = installed length + required travel + a small safety margin. Choose from the available lengths (10mm to 200mm) to match your design envelope.

How strong are these springs — what load can they handle?

Load capacity depends on the specific outer diameter and free length combination selected. Shorter springs with smaller outer diameters and fewer coils will have a higher spring rate (stiffer), while longer springs with more coils will be softer. For precise load and deflection data for your chosen variant, contact us to confirm specifications.

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

Yes. A2 (304) stainless steel offers good resistance to atmospheric corrosion, fresh water, and mild chemical exposure. It is suitable for outdoor, marine-adjacent, and food-adjacent applications where moderate corrosion resistance is required. For highly aggressive environments (salt spray, strong acids, or chlorinated water), A4 (316) stainless steel would be a stronger choice.

What does "closed and ground" end type mean, and why does it matter?

Closed ends mean the last coil is wound tight against the adjacent coil, reducing the active coil count and providing a more stable base. Ground ends mean the closed coil is machined flat, giving the spring a perpendicular bearing surface. This reduces buckling tendency and ensures even load distribution against flat spring seats — important for precision assemblies.

Can I use these springs in robotics or automation projects?

Yes. The consistent wire diameter and coil geometry make these springs well-suited for robotics prototyping, gripper return mechanisms, tensioning systems, and actuator pre-load applications. The stainless steel construction also means they will not rust and contaminate sensitive mechanisms over time.

How many pieces should I order for prototyping vs. production?

For initial prototyping and fit-testing, a pack of 1 or 5 pieces is typically sufficient. For small-batch production runs or to maintain a working stock, packs of 10, 20, or 50 pieces offer better per-unit value. Select your pack quantity from the variant options above.

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