Collection: Springs - Extension

Springs -> Extension

There are 1098 products in the sub-categories of Springs - Extension. Scroll down or follow the link to Springs - Extension in the products table to see all these items combined into a handy table with filters. To narrow down the selection, please choose a sub-category from the links below.

Category Details

This category includes various types of extension springs.
  • Helical spring that absorbs and stores energy by resisting a pulling force. When extended, it stores energy, and when released, it redistributes that energy to return to its original, coiled shape.
  • Typically used to provide a pulling force between two objects, often with hooks or loops on either end for attachment.
  • This category includes short and long lengths. An expanded range may be available on special order. Please enquire.
Springs - Extension

Miniature Bearings Australia - MBA Minibearings

Additional resources:


A more concise listing may be found in the Springs - Extension category on the Small Parts & Bearings online store.
OD (D0) Overall Length (L0) Wire Diameter (d) Max. Extension (L1) Spring Rate Initial Tension (IT) Indicative
Image
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
10
mm

(Equiv. 0.394 in.)
Wire Diameter (d)
0.250
mm

(Equiv. 0.01 in.)
Max. Extension (L1)
20.40
mm
Spring Rate
0.11
N/mm
Initial Tension (IT)
0.2
N
Extension Springs - 3x10x0.25 mm - Steel
Material: Steel    Load at L1: 1.27 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0300-0100-025-M (5 Pcs)
Extension Springs - 3x10x0.25 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $7.14 AUD
Regular price $14.74 AUD Sale price $7.14 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0) Overall Length (L0) Wire Diameter (d) Max. Extension (L1) Indicative
Image
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
10
mm

(Equiv. 0.394 in.)
Wire Diameter (d)
0.250
mm

(Equiv. 0.01 in.)
Max. Extension (L1)
20.40
mm
Extension Springs - 3x10x0.25 mm - Steel
Material: Steel    Spring Rate: 0.11 N/mm    Initial Tension (IT): 0.2 N    Load at L1: 1.27 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0300-0100-025-M (5 Pcs)
Extension Springs - 3x10x0.25 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $7.14 AUD
Regular price $14.74 AUD Sale price $7.14 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
10
mm

(Equiv. 0.394 in.)
Wire Diameter (d)
0.250
mm

(Equiv. 0.01 in.)
Max. Extension (L1)
20.40
mm
Spring Rate
0.11
N/mm
Initial Tension (IT)
0.2
N
Extension Springs - 3x10x0.25 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80    Load at L1: 1.27 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0300-0100-025-S4 (5 Pcs)
Extension Springs - 3x10x0.25 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80 Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $8.05 AUD
Regular price $9.65 AUD Sale price $8.05 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
10
mm

(Equiv. 0.394 in.)
Wire Diameter (d)
0.250
mm

(Equiv. 0.01 in.)
Max. Extension (L1)
20.40
mm
Extension Springs - 3x10x0.25 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80    Spring Rate: 0.11 N/mm    Initial Tension (IT): 0.2 N    Load at L1: 1.27 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0300-0100-025-S4 (5 Pcs)
Extension Springs - 3x10x0.25 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80 Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $8.05 AUD
Regular price $9.65 AUD Sale price $8.05 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
10
mm

(Equiv. 0.394 in.)
Wire Diameter (d)
0.300
mm

(Equiv. 0.012 in.)
Max. Extension (L1)
18.70
mm
Spring Rate
0.23
N/mm
Initial Tension (IT)
0.3
N
Extension Springs - 3x10x0.3 mm - Steel
Material: Steel    Load at L1: 2.25 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0300-0100-03-M (5 Pcs)
Extension Springs - 3x10x0.3 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $7.14 AUD
Regular price $14.74 AUD Sale price $7.14 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
10
mm

(Equiv. 0.394 in.)
Wire Diameter (d)
0.300
mm

(Equiv. 0.012 in.)
Max. Extension (L1)
18.70
mm
Extension Springs - 3x10x0.3 mm - Steel
Material: Steel    Spring Rate: 0.23 N/mm    Initial Tension (IT): 0.3 N    Load at L1: 2.25 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0300-0100-03-M (5 Pcs)
Extension Springs - 3x10x0.3 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $7.14 AUD
Regular price $14.74 AUD Sale price $7.14 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
10
mm

(Equiv. 0.394 in.)
Wire Diameter (d)
0.300
mm

(Equiv. 0.012 in.)
Max. Extension (L1)
18.70
mm
Spring Rate
0.23
N/mm
Initial Tension (IT)
0.3
N
Extension Springs - 3x10x0.3 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80    Load at L1: 2.25 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0300-0100-03-S4 (5 Pcs)
Extension Springs - 3x10x0.3 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80 Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $8.05 AUD
Regular price $9.65 AUD Sale price $8.05 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
10
mm

(Equiv. 0.394 in.)
Wire Diameter (d)
0.300
mm

(Equiv. 0.012 in.)
Max. Extension (L1)
18.70
mm
Extension Springs - 3x10x0.3 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80    Spring Rate: 0.23 N/mm    Initial Tension (IT): 0.3 N    Load at L1: 2.25 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0300-0100-03-S4 (5 Pcs)
Extension Springs - 3x10x0.3 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80 Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $8.05 AUD
Regular price $9.65 AUD Sale price $8.05 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
10
mm

(Equiv. 0.394 in.)
Wire Diameter (d)
0.350
mm

(Equiv. 0.014 in.)
Max. Extension (L1)
14.60
mm
Spring Rate
0.59
N/mm
Initial Tension (IT)
0.7
N
Extension Springs - 3x10x0.35 mm - Steel
Material: Steel    Load at L1: 3.33 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0300-0100-035-M (5 Pcs)
Extension Springs - 3x10x0.35 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $7.14 AUD
Regular price $14.74 AUD Sale price $7.14 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
10
mm

(Equiv. 0.394 in.)
Wire Diameter (d)
0.350
mm

(Equiv. 0.014 in.)
Max. Extension (L1)
14.60
mm
Extension Springs - 3x10x0.35 mm - Steel
Material: Steel    Spring Rate: 0.59 N/mm    Initial Tension (IT): 0.7 N    Load at L1: 3.33 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0300-0100-035-M (5 Pcs)
Extension Springs - 3x10x0.35 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $7.14 AUD
Regular price $14.74 AUD Sale price $7.14 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
10
mm

(Equiv. 0.394 in.)
Wire Diameter (d)
0.350
mm

(Equiv. 0.014 in.)
Max. Extension (L1)
14.60
mm
Spring Rate
0.59
N/mm
Initial Tension (IT)
0.7
N
Extension Springs - 3x10x0.35 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80    Load at L1: 3.33 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0300-0100-035-S4 (5 Pcs)
Extension Springs - 3x10x0.35 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80 Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $8.05 AUD
Regular price $9.65 AUD Sale price $8.05 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
10
mm

(Equiv. 0.394 in.)
Wire Diameter (d)
0.350
mm

(Equiv. 0.014 in.)
Max. Extension (L1)
14.60
mm
Extension Springs - 3x10x0.35 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80    Spring Rate: 0.59 N/mm    Initial Tension (IT): 0.7 N    Load at L1: 3.33 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0300-0100-035-S4 (5 Pcs)
Extension Springs - 3x10x0.35 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80 Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $8.05 AUD
Regular price $9.65 AUD Sale price $8.05 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
10
mm

(Equiv. 0.394 in.)
Wire Diameter (d)
0.400
mm

(Equiv. 0.016 in.)
Max. Extension (L1)
13.50
mm
Spring Rate
0.98
N/mm
Initial Tension (IT)
0.9
N
Extension Springs - 3x10x0.4 mm - Steel
Material: Steel    Load at L1: 4.41 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0300-0100-04-M (100 Pcs)
Extension Springs - 3x10x0.4 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $139.41 AUD
Regular price $294.84 AUD Sale price $139.41 AUD
Per 100
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
10
mm

(Equiv. 0.394 in.)
Wire Diameter (d)
0.400
mm

(Equiv. 0.016 in.)
Max. Extension (L1)
13.50
mm
Extension Springs - 3x10x0.4 mm - Steel
Material: Steel    Spring Rate: 0.98 N/mm    Initial Tension (IT): 0.9 N    Load at L1: 4.41 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0300-0100-04-M (100 Pcs)
Extension Springs - 3x10x0.4 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $139.41 AUD
Regular price $294.84 AUD Sale price $139.41 AUD
Per 100
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
10
mm

(Equiv. 0.394 in.)
Wire Diameter (d)
0.400
mm

(Equiv. 0.016 in.)
Max. Extension (L1)
13.50
mm
Spring Rate
0.98
N/mm
Initial Tension (IT)
0.9
N
Extension Springs - 3x10x0.4 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80    Load at L1: 4.41 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0300-0100-04-S4 (5 Pcs)
Extension Springs - 3x10x0.4 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80 Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $9.95 AUD
Regular price $11.95 AUD Sale price $9.95 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
10
mm

(Equiv. 0.394 in.)
Wire Diameter (d)
0.400
mm

(Equiv. 0.016 in.)
Max. Extension (L1)
13.50
mm
Extension Springs - 3x10x0.4 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80    Spring Rate: 0.98 N/mm    Initial Tension (IT): 0.9 N    Load at L1: 4.41 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0300-0100-04-S4 (5 Pcs)
Extension Springs - 3x10x0.4 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80 Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $9.95 AUD
Regular price $11.95 AUD Sale price $9.95 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
10
mm

(Equiv. 0.394 in.)
Wire Diameter (d)
0.450
mm

(Equiv. 0.018 in.)
Max. Extension (L1)
12.20
mm
Spring Rate
2.26
N/mm
Initial Tension (IT)
1.6
N
Extension Springs - 3x10x0.45 mm - Steel
Material: Steel    Load at L1: 6.47 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0300-0100-045-M (5 Pcs)
Extension Springs - 3x10x0.45 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $7.14 AUD
Regular price $14.74 AUD Sale price $7.14 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
10
mm

(Equiv. 0.394 in.)
Wire Diameter (d)
0.450
mm

(Equiv. 0.018 in.)
Max. Extension (L1)
12.20
mm
Extension Springs - 3x10x0.45 mm - Steel
Material: Steel    Spring Rate: 2.26 N/mm    Initial Tension (IT): 1.6 N    Load at L1: 6.47 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0300-0100-045-M (5 Pcs)
Extension Springs - 3x10x0.45 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $7.14 AUD
Regular price $14.74 AUD Sale price $7.14 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
10
mm

(Equiv. 0.394 in.)
Wire Diameter (d)
0.500
mm

(Equiv. 0.02 in.)
Max. Extension (L1)
12.00
mm
Spring Rate
3.24
N/mm
Initial Tension (IT)
2.2
N
Extension Springs - 3x10x0.5 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80    Load at L1: 8.80 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0300-0100-05-S4 (5 Pcs)
Extension Springs - 3x10x0.5 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80 Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $9.95 AUD
Regular price $11.95 AUD Sale price $9.95 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
10
mm

(Equiv. 0.394 in.)
Wire Diameter (d)
0.500
mm

(Equiv. 0.02 in.)
Max. Extension (L1)
12.00
mm
Extension Springs - 3x10x0.5 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80    Spring Rate: 3.24 N/mm    Initial Tension (IT): 2.2 N    Load at L1: 8.80 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0300-0100-05-S4 (5 Pcs)
Extension Springs - 3x10x0.5 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80 Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $9.95 AUD
Regular price $11.95 AUD Sale price $9.95 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
10
mm

(Equiv. 0.394 in.)
Wire Diameter (d)
0.500
mm

(Equiv. 0.02 in.)
Max. Extension (L1)
12.00
mm
Spring Rate
3.24
N/mm
Initial Tension (IT)
2.2
N
Extension Springs - 3x10x0.5 mm - Steel
Material: Steel    Load at L1: 8.80 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0300-0100-05-M (5 Pcs)
Extension Springs - 3x10x0.5 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $7.14 AUD
Regular price $14.74 AUD Sale price $7.14 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
10
mm

(Equiv. 0.394 in.)
Wire Diameter (d)
0.500
mm

(Equiv. 0.02 in.)
Max. Extension (L1)
12.00
mm
Extension Springs - 3x10x0.5 mm - Steel
Material: Steel    Spring Rate: 3.24 N/mm    Initial Tension (IT): 2.2 N    Load at L1: 8.80 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0300-0100-05-M (5 Pcs)
Extension Springs - 3x10x0.5 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $7.14 AUD
Regular price $14.74 AUD Sale price $7.14 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
15
mm

(Equiv. 0.591 in.)
Wire Diameter (d)
0.250
mm

(Equiv. 0.01 in.)
Max. Extension (L1)
38.00
mm
Spring Rate
0.05
N/mm
Initial Tension (IT)
0.2
N
Extension Springs - 3x15x0.25 mm - Steel
Material: Steel    Load at L1: 1.27 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0300-0150-025-M (5 Pcs)
Extension Springs - 3x15x0.25 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $7.14 AUD
Regular price $14.74 AUD Sale price $7.14 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
15
mm

(Equiv. 0.591 in.)
Wire Diameter (d)
0.250
mm

(Equiv. 0.01 in.)
Max. Extension (L1)
38.00
mm
Extension Springs - 3x15x0.25 mm - Steel
Material: Steel    Spring Rate: 0.05 N/mm    Initial Tension (IT): 0.2 N    Load at L1: 1.27 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0300-0150-025-M (5 Pcs)
Extension Springs - 3x15x0.25 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $7.14 AUD
Regular price $14.74 AUD Sale price $7.14 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
15
mm

(Equiv. 0.591 in.)
Wire Diameter (d)
0.250
mm

(Equiv. 0.01 in.)
Max. Extension (L1)
38.00
mm
Spring Rate
0.05
N/mm
Initial Tension (IT)
0.2
N
Extension Springs - 3x15x0.25 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80    Load at L1: 1.27 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0300-0150-025-S4 (5 Pcs)
Extension Springs - 3x15x0.25 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80 Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $11.68 AUD
Regular price $14.02 AUD Sale price $11.68 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
15
mm

(Equiv. 0.591 in.)
Wire Diameter (d)
0.250
mm

(Equiv. 0.01 in.)
Max. Extension (L1)
38.00
mm
Extension Springs - 3x15x0.25 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80    Spring Rate: 0.05 N/mm    Initial Tension (IT): 0.2 N    Load at L1: 1.27 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0300-0150-025-S4 (5 Pcs)
Extension Springs - 3x15x0.25 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80 Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $11.68 AUD
Regular price $14.02 AUD Sale price $11.68 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
15
mm

(Equiv. 0.591 in.)
Wire Diameter (d)
0.300
mm

(Equiv. 0.012 in.)
Max. Extension (L1)
31.60
mm
Spring Rate
0.12
N/mm
Initial Tension (IT)
0.3
N
Extension Springs - 3x15x0.3 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80    Load at L1: 2.25 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0300-0150-03-S4 (5 Pcs)
Extension Springs - 3x15x0.3 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80 Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $8.23 AUD
Regular price $9.87 AUD Sale price $8.23 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
15
mm

(Equiv. 0.591 in.)
Wire Diameter (d)
0.300
mm

(Equiv. 0.012 in.)
Max. Extension (L1)
31.60
mm
Extension Springs - 3x15x0.3 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80    Spring Rate: 0.12 N/mm    Initial Tension (IT): 0.3 N    Load at L1: 2.25 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0300-0150-03-S4 (5 Pcs)
Extension Springs - 3x15x0.3 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80 Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $8.23 AUD
Regular price $9.87 AUD Sale price $8.23 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
15
mm

(Equiv. 0.591 in.)
Wire Diameter (d)
0.300
mm

(Equiv. 0.012 in.)
Max. Extension (L1)
31.60
mm
Spring Rate
0.12
N/mm
Initial Tension (IT)
0.3
N
Extension Springs - 3x15x0.3 mm - Steel
Material: Steel    Load at L1: 2.25 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0300-0150-03-M (5 Pcs)
Extension Springs - 3x15x0.3 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $7.14 AUD
Regular price $14.74 AUD Sale price $7.14 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
15
mm

(Equiv. 0.591 in.)
Wire Diameter (d)
0.300
mm

(Equiv. 0.012 in.)
Max. Extension (L1)
31.60
mm
Extension Springs - 3x15x0.3 mm - Steel
Material: Steel    Spring Rate: 0.12 N/mm    Initial Tension (IT): 0.3 N    Load at L1: 2.25 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0300-0150-03-M (5 Pcs)
Extension Springs - 3x15x0.3 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $7.14 AUD
Regular price $14.74 AUD Sale price $7.14 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
15
mm

(Equiv. 0.591 in.)
Wire Diameter (d)
0.350
mm

(Equiv. 0.014 in.)
Max. Extension (L1)
24.10
mm
Spring Rate
0.29
N/mm
Initial Tension (IT)
0.7
N
Extension Springs - 3x15x0.35 mm - Steel
Material: Steel    Load at L1: 3.33 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0300-0150-035-M (5 Pcs)
Extension Springs - 3x15x0.35 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $7.14 AUD
Regular price $14.74 AUD Sale price $7.14 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
15
mm

(Equiv. 0.591 in.)
Wire Diameter (d)
0.350
mm

(Equiv. 0.014 in.)
Max. Extension (L1)
24.10
mm
Extension Springs - 3x15x0.35 mm - Steel
Material: Steel    Spring Rate: 0.29 N/mm    Initial Tension (IT): 0.7 N    Load at L1: 3.33 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0300-0150-035-M (5 Pcs)
Extension Springs - 3x15x0.35 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $7.14 AUD
Regular price $14.74 AUD Sale price $7.14 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
15
mm

(Equiv. 0.591 in.)
Wire Diameter (d)
0.350
mm

(Equiv. 0.014 in.)
Max. Extension (L1)
24.10
mm
Spring Rate
0.29
N/mm
Initial Tension (IT)
0.7
N
Extension Springs - 3x15x0.35 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80    Load at L1: 3.33 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0300-0150-035-S4 (5 Pcs)
Extension Springs - 3x15x0.35 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80 Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $9.32 AUD
Regular price $11.18 AUD Sale price $9.32 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
15
mm

(Equiv. 0.591 in.)
Wire Diameter (d)
0.350
mm

(Equiv. 0.014 in.)
Max. Extension (L1)
24.10
mm
Extension Springs - 3x15x0.35 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80    Spring Rate: 0.29 N/mm    Initial Tension (IT): 0.7 N    Load at L1: 3.33 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0300-0150-035-S4 (5 Pcs)
Extension Springs - 3x15x0.35 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80 Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $9.32 AUD
Regular price $11.18 AUD Sale price $9.32 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
15
mm

(Equiv. 0.591 in.)
Wire Diameter (d)
0.400
mm

(Equiv. 0.016 in.)
Max. Extension (L1)
21.00
mm
Spring Rate
0.59
N/mm
Initial Tension (IT)
0.9
N
Extension Springs - 3x15x0.4 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80    Load at L1: 4.41 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0300-0150-04-S4 (5 Pcs)
Extension Springs - 3x15x0.4 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80 Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $9.32 AUD
Regular price $11.18 AUD Sale price $9.32 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
15
mm

(Equiv. 0.591 in.)
Wire Diameter (d)
0.400
mm

(Equiv. 0.016 in.)
Max. Extension (L1)
21.00
mm
Extension Springs - 3x15x0.4 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80    Spring Rate: 0.59 N/mm    Initial Tension (IT): 0.9 N    Load at L1: 4.41 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0300-0150-04-S4 (5 Pcs)
Extension Springs - 3x15x0.4 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80 Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $9.32 AUD
Regular price $11.18 AUD Sale price $9.32 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
15
mm

(Equiv. 0.591 in.)
Wire Diameter (d)
0.400
mm

(Equiv. 0.016 in.)
Max. Extension (L1)
21.00
mm
Spring Rate
0.59
N/mm
Initial Tension (IT)
0.9
N
Extension Springs - 3x15x0.4 mm - Steel
Material: Steel    Load at L1: 4.41 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0300-0150-04-M (5 Pcs)
Extension Springs - 3x15x0.4 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $7.14 AUD
Regular price $14.74 AUD Sale price $7.14 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
15
mm

(Equiv. 0.591 in.)
Wire Diameter (d)
0.400
mm

(Equiv. 0.016 in.)
Max. Extension (L1)
21.00
mm
Extension Springs - 3x15x0.4 mm - Steel
Material: Steel    Spring Rate: 0.59 N/mm    Initial Tension (IT): 0.9 N    Load at L1: 4.41 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0300-0150-04-M (5 Pcs)
Extension Springs - 3x15x0.4 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $7.14 AUD
Regular price $14.74 AUD Sale price $7.14 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
15
mm

(Equiv. 0.591 in.)
Wire Diameter (d)
0.450
mm

(Equiv. 0.018 in.)
Max. Extension (L1)
19.50
mm
Spring Rate
1.08
N/mm
Initial Tension (IT)
1.6
N
Extension Springs - 3x15x0.45 mm - Steel
Material: Steel    Load at L1: 6.47 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0300-0150-045-M (5 Pcs)
Extension Springs - 3x15x0.45 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $7.14 AUD
Regular price $14.74 AUD Sale price $7.14 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
15
mm

(Equiv. 0.591 in.)
Wire Diameter (d)
0.450
mm

(Equiv. 0.018 in.)
Max. Extension (L1)
19.50
mm
Extension Springs - 3x15x0.45 mm - Steel
Material: Steel    Spring Rate: 1.08 N/mm    Initial Tension (IT): 1.6 N    Load at L1: 6.47 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0300-0150-045-M (5 Pcs)
Extension Springs - 3x15x0.45 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $7.14 AUD
Regular price $14.74 AUD Sale price $7.14 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
15
mm

(Equiv. 0.591 in.)
Wire Diameter (d)
0.500
mm

(Equiv. 0.02 in.)
Max. Extension (L1)
18.70
mm
Spring Rate
1.77
N/mm
Initial Tension (IT)
2.2
N
Extension Springs - 3x15x0.5 mm - Steel
Material: Steel    Load at L1: 8.80 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0300-0150-05-M (100 Pcs)
Extension Springs - 3x15x0.5 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $139.41 AUD
Regular price $294.84 AUD Sale price $139.41 AUD
Per 100
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
15
mm

(Equiv. 0.591 in.)
Wire Diameter (d)
0.500
mm

(Equiv. 0.02 in.)
Max. Extension (L1)
18.70
mm
Extension Springs - 3x15x0.5 mm - Steel
Material: Steel    Spring Rate: 1.77 N/mm    Initial Tension (IT): 2.2 N    Load at L1: 8.80 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0300-0150-05-M (100 Pcs)
Extension Springs - 3x15x0.5 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $139.41 AUD
Regular price $294.84 AUD Sale price $139.41 AUD
Per 100
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
15
mm

(Equiv. 0.591 in.)
Wire Diameter (d)
0.500
mm

(Equiv. 0.02 in.)
Max. Extension (L1)
18.70
mm
Spring Rate
1.77
N/mm
Initial Tension (IT)
2.2
N
Extension Springs - 3x15x0.5 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80    Load at L1: 8.80 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0300-0150-05-S4 (5 Pcs)
Extension Springs - 3x15x0.5 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80 Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $10.41 AUD
Regular price $12.49 AUD Sale price $10.41 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
15
mm

(Equiv. 0.591 in.)
Wire Diameter (d)
0.500
mm

(Equiv. 0.02 in.)
Max. Extension (L1)
18.70
mm
Extension Springs - 3x15x0.5 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80    Spring Rate: 1.77 N/mm    Initial Tension (IT): 2.2 N    Load at L1: 8.80 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0300-0150-05-S4 (5 Pcs)
Extension Springs - 3x15x0.5 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80 Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $10.41 AUD
Regular price $12.49 AUD Sale price $10.41 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
19.2
mm

(Equiv. 0.756 in.)
Wire Diameter (d)
0.63
mm

(Equiv. 0.025 in.)
Max. Extension (L1)
23.82
mm
Spring Rate
4.01
N/mm
Initial Tension (IT)
3.5
N
Extension Springs - 3x19.2x0.63 mm - Stainless Steel 302/304 Similar to A2, 18-8
Material: Stainless Steel 302/304 (Similar to A2, 18-8)    Load at L1: 21.83 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0300-0192-06-S2
Extension Springs - 3x19.2x0.63 mm - Stainless Steel 302/304 Similar to A2, 18-8 Spring
2 Available Now | Item Discontinued - Up to 2 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $22.00 AUD
Regular price $41.80 AUD Sale price $22.00 AUD
Each
Quantity Required

2 Available Now. These are priced to quit. Please contact us for a quote if you require more.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
19.2
mm

(Equiv. 0.756 in.)
Wire Diameter (d)
0.63
mm

(Equiv. 0.025 in.)
Max. Extension (L1)
23.82
mm
Extension Springs - 3x19.2x0.63 mm - Stainless Steel 302/304 Similar to A2, 18-8
Material: Stainless Steel 302/304 (Similar to A2, 18-8)    Spring Rate: 4.01 N/mm    Initial Tension (IT): 3.5 N    Load at L1: 21.83 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0300-0192-06-S2
Extension Springs - 3x19.2x0.63 mm - Stainless Steel 302/304 Similar to A2, 18-8 Spring
2 Available Now | Item Discontinued - Up to 2 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $22.00 AUD
Regular price $41.80 AUD Sale price $22.00 AUD
Each
Quantity Required

2 Available Now. These are priced to quit. Please contact us for a quote if you require more.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
20
mm

(Equiv. 0.787 in.)
Wire Diameter (d)
0.250
mm

(Equiv. 0.01 in.)
Max. Extension (L1)
55.90
mm
Spring Rate
0.03
N/mm
Initial Tension (IT)
0.2
N
Extension Springs - 3x20x0.25 mm - Steel
Material: Steel    Load at L1: 1.27 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0300-0200-025-M (5 Pcs)
Extension Springs - 3x20x0.25 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $7.14 AUD
Regular price $14.74 AUD Sale price $7.14 AUD
Per 5
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.00
mm

(Equiv. 0.118 in.)
Overall Length (L0)
20
mm

(Equiv. 0.787 in.)
Wire Diameter (d)
0.250
mm

(Equiv. 0.01 in.)
Max. Extension (L1)
55.90
mm
Extension Springs - 3x20x0.25 mm - Steel
Material: Steel    Spring Rate: 0.03 N/mm    Initial Tension (IT): 0.2 N    Load at L1: 1.27 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0300-0200-025-M (5 Pcs)
Extension Springs - 3x20x0.25 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 02, 2025
Regular price $7.14 AUD
Regular price $14.74 AUD Sale price $7.14 AUD
Per 5
Quantity Required

Backorder: Out of Stock.