Wire Dia 1.8mm Compression Springs A2 Stainless Steel Small Pressure Spring
Wire Dia 1.8mm Compression Springs A2 Stainless Steel Small Pressure Spring
Wire Dia 1.8mm Compression Springs A2 Stainless Steel Small Pressure Spring
Wire Dia 1.8mm Compression Springs A2 Stainless Steel Small Pressure Spring
Wire Dia 1.8mm Compression Springs A2 Stainless Steel Small Pressure Spring
Wire Dia 1.8mm Compression Springs A2 Stainless Steel Small Pressure Spring
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Wire Dia 1.8mm Compression Springs A2 Stainless Steel Small Pressure SpringWire Dia 1.8mm Compression Springs A2 Stainless Steel Small Pressure SpringWire Dia 1.8mm Compression Springs A2 Stainless Steel Small Pressure SpringWire Dia 1.8mm Compression Springs A2 Stainless Steel Small Pressure SpringWire Dia 1.8mm Compression Springs A2 Stainless Steel Small Pressure SpringWire Dia 1.8mm Compression Springs A2 Stainless Steel Small Pressure Spring

Wire Dia 1.8mm Compression Springs A2 Stainless Steel Small Pressure Spring

HomeDIYer
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By HomeDIYer®

Price:
$16.21 USD
Stock:
In stock (500 units), ready to be shipped

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Description

1.8mm Wire Compression Springs — A2 Stainless Steel for Reliable DIY Pressure Control

When a project demands consistent return force in a compact space, finding a spring that holds its shape under repeated cycling is the real challenge. Makers, hobbyists, and small-workshop engineers working on jigs, fixtures, latches, valves, and automation assemblies need a spring that resists corrosion and maintains load accuracy over thousands of cycles — these 1.8mm wire diameter compression springs are built for exactly that.

Each spring is formed from A2 (304) stainless steel wire with a nominal wire diameter of 1.8 mm (0.071 in). Inner diameter options span 10 mm to 30 mm (0.39 in – 1.18 in), and free-length options range from 15 mm to 50 mm (0.59 in – 1.97 in). Springs are sold in packs of 10 or 20 pieces, with closed and ground ends for flat, stable seating.

Typical use cases include: replacement compression springs for 3D-printer bed leveling assemblies, return springs in DIY pneumatic valve actuators, and preload springs in custom CNC fixture clamps — all scenarios where a compact stainless spring with a predictable spring rate is essential.

⚙️ Compatibility: Suitable for spring housings, bores, and guide rods sized to match the selected inner diameter. Verify free length and inner diameter against your assembly before ordering.

✅ Key Features of These 1.8mm Wire Compression Springs

🔩 A2 Stainless Steel Wire

Grade 304 stainless construction resists oxidation and mild chemical exposure, keeping springs functional in humid or lightly corrosive environments.

📐 1.8 mm Wire Diameter

Consistent wire gauge across all size variants ensures predictable spring rate and load capacity for engineering calculations and direct replacements.

🎯 Wide Size Matrix

Inner diameters from 10 mm to 30 mm and free lengths from 15 mm to 50 mm give you the flexibility to match a broad range of housing and guide-rod dimensions.

📦 10 or 20 Piece Packs

Choose the pack size that suits your project — a 10-piece pack for prototyping or a 20-piece pack for production runs and spares inventory.

🛡️ Closed & Ground Ends

Flat, ground end coils provide stable seating against spring pockets and retainers, reducing lateral deflection and improving load alignment.

🔄 Cycle-Stable Construction

Cold-wound stainless wire maintains free-length consistency through repeated compression cycles, reducing set and extending service life in dynamic applications.

📐 Technical Specifications — Compression Spring

Material A2 Stainless Steel (Grade 304)
Wire Diameter 1.8 mm (0.071 in)
Inner Diameter Range 10 mm – 30 mm (0.39 in – 1.18 in)
Free Length Range 15 mm – 50 mm (0.59 in – 1.97 in)
End Type Closed and Ground
Winding Direction Right-hand
Spring Rate See variant options
Max Load See variant options
Surface Finish Natural stainless (no coating)
Pack Quantity 10 pcs or 20 pcs (select above)

❓ Frequently Asked Questions

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

Measure the outer diameter of your guide rod or the inner diameter of your spring housing. The spring's inner diameter should be slightly larger than the guide rod (typically 0.5–1 mm clearance) to allow free movement without binding. If seating in a bore, the spring's outer diameter (inner diameter + 2 × wire diameter) must fit inside the bore with a small clearance.

What free length should I select?

Free length is the uncompressed length of the spring. Choose a free length longer than your required working length so the spring is under compression in its installed position. A common rule of thumb is to select a free length 20–30% longer than the compressed working length to ensure adequate preload and return force.

Are these springs strong enough for my load requirements?

Load capacity depends on the specific inner diameter and free length combination. A2 stainless steel with a 1.8 mm wire diameter is suited for light-to-medium duty applications such as latches, valves, 3D-printer beds, and fixture clamps. For precise load calculations, contact us with your required spring rate and working deflection and we can confirm suitability.

Will these springs rust or corrode?

A2 (Grade 304) stainless steel provides good resistance to atmospheric corrosion, fresh water, and mild chemical exposure. It is not recommended for prolonged immersion in salt water or strong acids. For marine or highly corrosive environments, consider A4 (Grade 316) stainless steel springs instead.

Are these compatible with standard spring housings and guide rods?

Yes — the springs follow standard compression spring geometry with closed and ground ends, making them compatible with most commercial spring housings, guide rods, and retainer pockets. Always verify the inner diameter, outer diameter, and free length against your assembly drawings before ordering.

Should I order 10 pcs or 20 pcs?

The 10-piece pack is ideal for prototyping, single-machine builds, or when you need a small quantity for testing. The 20-piece pack offers a better per-unit value and is recommended for production runs, batch builds, or when you want spares on hand for maintenance. Both packs contain identical springs.

Can I use these springs in outdoor or wet environments?

A2 stainless steel performs well in outdoor and humid conditions, including rain exposure and condensation-prone enclosures. For continuous outdoor use in coastal or industrial environments with salt spray or chemical fumes, additional protective measures or an upgrade to A4 stainless may be advisable.

🛒 Select your wire diameter, inner diameter, free length, and quantity above, then add to cart.

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