Compression Spring Steel 2mm Wire Dia 18mm - 20mm OD Small Pressure Springs
Compression Spring Steel 2mm Wire Dia 18mm - 20mm OD Small Pressure Springs
Compression Spring Steel 2mm Wire Dia 18mm - 20mm OD Small Pressure Springs
Compression Spring Steel 2mm Wire Dia 18mm - 20mm OD Small Pressure Springs
Compression Spring Steel 2mm Wire Dia 18mm - 20mm OD Small Pressure Springs
Roll over image to zoom in Click on image to zoom
Compression Spring Steel 2mm Wire Dia 18mm - 20mm OD Small Pressure SpringsCompression Spring Steel 2mm Wire Dia 18mm - 20mm OD Small Pressure SpringsCompression Spring Steel 2mm Wire Dia 18mm - 20mm OD Small Pressure SpringsCompression Spring Steel 2mm Wire Dia 18mm - 20mm OD Small Pressure SpringsCompression Spring Steel 2mm Wire Dia 18mm - 20mm OD Small Pressure Springs

Compression Spring Steel 2mm Wire Dia 18mm - 20mm OD Small Pressure Springs

HomeDIYer
No reviews

By HomeDIYer®

Price:
$15.20 USD
Stock:
In stock (500 units), ready to be shipped

Payment & Security

Ach Direct Debit Amazon American Express Apple Pay Bancontact BLIK Diners Club Discover EPS Google Pay iDEAL Wero JCB Maestro Mastercard Multibanco MobilePay PayPal Przelewy24 Shop Pay Twint Union Pay USDC Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Limited Offer — Spend More, Save More
Spend $55+
Save $5
Spend $100+
Save $10
Spend $200+
Save $25
✅ Discount applied automatically at checkout 🚚 Free shipping on orders over $89
HomeDIYer DIY Expert Support

DIY Expert Support

Get fitment advice & recommendations

Mon–Fri  8:30 AM – 8:00 PM
WhatsApp
24-Hour Fast Ship
Arrives in 3–14 Days
Worldwide Shipping
30-Day Returns
1 tree planted with every purchase

Description

Compression Spring Steel 2mm Wire — Reliable Small Pressure Springs for DIY Mechanisms

When a mechanism fails because a spring loses tension too quickly, the entire project stalls. Makers, hobbyists, and small workshop operators who build valves, latches, jigs, and automation assemblies need compression springs that hold their rated load cycle after cycle without permanent set. These steel compression springs with a 2mm wire diameter and 18–20mm outer diameter are sized for the tight clearances common in DIY builds, 3D-printed enclosures, and light industrial fixtures.

Each spring is formed from carbon steel wire with a wire diameter of 2mm (approx. 0.079 in) and an outer diameter of 18mm, 19mm, or 20mm (approx. 0.71–0.79 in). Free lengths span 15mm to 305mm (approx. 0.59–12.0 in), giving you a wide selection for shallow pockets or extended travel applications. The closed and ground ends provide flat, stable seating on both spring seats.

Typical use cases include return springs in DIY pneumatic valves, preload springs in 3D-printer extruder assemblies, compression elements in custom latch and lock mechanisms, and buffer springs in light-duty automation jigs — all scenarios where a compact outer diameter and consistent spring rate are critical for repeatable performance.

🔧 Compatibility: Suitable for spring seats and bores sized for 18mm, 19mm, or 20mm OD. Verify bore clearance and free length before ordering. Select your exact size from the variant options above.

✅ Key Features of These Compression Springs

📐
Precise 2mm Wire Diameter

Consistent 2mm wire cross-section delivers a predictable spring rate and reliable load capacity across all length variants, reducing guesswork in your design calculations.

🔩
18mm, 19mm & 20mm OD Options

Three outer diameter choices let you match the spring to your bore or spring seat without modification, covering a range of compact mechanism designs in a single product family.

📏
Wide Free-Length Range: 15–305mm

From short 15mm (0.59 in) pocket springs to extended 305mm (12.0 in) travel springs, the full length range covers shallow recesses and long-stroke applications alike.

⚙️
Carbon Steel Construction

Formed from carbon steel wire for a firm spring rate and good fatigue resistance under repeated compression cycles in dry, indoor mechanical assemblies.

🏁
Closed & Ground Ends

Flat, ground end coils seat squarely on spring plates and bores, minimizing lateral buckling and ensuring consistent force application along the spring axis.

📦
Flexible Pack Quantities: 5 or 10 Pcs

Choose a 5-piece or 10-piece pack to match your project scale — enough for prototyping or small-batch production without over-ordering.

📐 Technical Specifications — Compression Springs

Wire Diameter 2mm (approx. 0.079 in)
Outer Diameter (OD) 18mm / 19mm / 20mm (approx. 0.71–0.79 in) — See variant options
Free Length 15mm – 305mm (approx. 0.59–12.0 in) — See variant options
End Type Closed and Ground
Material Carbon Steel
Finish See variant options
Spring Rate See variant options
Pack Quantity 5 Pcs or 10 Pcs — See variant options
Application Light-duty compression, return, and preload mechanisms

❓ Frequently Asked Questions

How do I choose the right outer diameter — 18mm, 19mm, or 20mm?

Measure the bore or spring seat your spring will sit in. The spring's OD should be slightly smaller than the bore to allow free movement without binding. For a 20mm bore, an 18mm or 19mm OD spring typically works well. If the spring sits on a post, the inner diameter (OD minus twice the wire diameter) must clear the post diameter.

How do I select the correct free length for my application?

Free length is the uncompressed length of the spring. Choose a free length longer than your required working length by enough to generate the desired preload force at your compressed position. If you need the spring to exert force at 30mm compressed height, select a free length of 40–60mm or more depending on your required load.

Are these springs suitable for outdoor or wet environments?

These springs are made from carbon steel and are best suited for dry, indoor applications. Prolonged exposure to moisture or corrosive environments may cause surface rust. For outdoor or humid environments, consider applying a light coat of oil or grease, or contact us to confirm suitability for your specific conditions.

What load capacity can I expect from a 2mm wire diameter spring?

Load capacity depends on the wire diameter, OD, free length, and number of active coils — all of which vary by the specific size variant. The 2mm wire diameter is suited for light-duty compression and return applications. For precise load and deflection data for a specific variant, please contact us to confirm before ordering for load-critical designs.

Can I use these springs in 3D-printed assemblies or plastic housings?

Yes. The compact 18–20mm OD and the range of short free lengths (starting at 15mm) make these springs well-suited for 3D-printed enclosures, extruder assemblies, and custom plastic fixtures. Ensure the spring seat is flat and the bore is sized to the OD you select to prevent lateral buckling.

What is the difference between the 5-piece and 10-piece quantity options?

Both options contain the same spring in the same size — the only difference is the number of pieces per order. The 10-piece pack is available for shorter lengths (15–50mm) where multiple springs are commonly needed for prototyping or batch builds. The 5-piece pack covers the full length range including longer variants (60–305mm). Select the quantity that matches your project needs.

How do I verify the spring will fit my mechanism before purchasing?

Check three dimensions: (1) OD must clear your bore with a small gap, (2) inner diameter (OD − 2 × wire dia = approx. 14–16mm) must clear any guide post, and (3) free length must exceed your maximum working length. If you are unsure, order a small quantity first to test fit before committing to a larger batch.

🛒 Select your size (Wire Diameter × OD × Length) and quantity above, then add to cart.

You may also like

Recently viewed