Collection: Springs - Extension

Springs -> Extension

There are 37 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

Small Parts & Bearings

Additional resources:


A more comprehensive listing may be found in the Springs - Extension category on the MBA Minibearings main store.
OD (D0) Overall Length (L0) Wire Diameter (d) Max. Extension (L1) Spring Rate Initial Tension (IT) Indicative
Image
Extension Springs - 3x19.2x0.63 mm - Stainless Steel 302/304 Similar to A2, 18-8 Spring
OD (D0)
3.00
mm
Overall Length (L0)
19.2
mm
Wire Diameter (d)
0.63
mm
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
Deleted Item. Available while stocks last.
Part Number: ES-0300-0192-06-S2 (Each)
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
Excludes GST and overseas Taxes & Duties
Quantity Required

2 Available Now. These are priced to quit. Please contact us for a quote if you require more.
OD (D0) Overall Length (L0) Wire Diameter (d) Max. Extension (L1) Indicative
Image
Extension Springs - 3x19.2x0.63 mm - Stainless Steel 302/304 Similar to A2, 18-8 Spring
OD (D0)
3.00
mm
Overall Length (L0)
19.2
mm
Wire Diameter (d)
0.63
mm
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
Deleted Item. Available while stocks last.
Part Number: ES-0300-0192-06-S2 (Each)
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
Excludes GST and overseas Taxes & Duties
Quantity Required

2 Available Now. These are priced to quit. Please contact us for a quote if you require more.
Extension Springs - 3.18x152.4x0.38 mm Music Wire - Steel Spring
OD (D0)
3.18
mm
Overall Length (L0)
152.4
mm
Wire Diameter (d)
0.38
mm
Spring Rate
0.02
N/mm
Initial Tension (IT)
0.0
N
Extension Springs - 3.18x152.4x0.38 mm - Steel
Material: Steel   
Category: Springs - Extension - Music Wire
Part Number: ES-0318-1524-04-M (Each)
3 Available Now | Further orders can be expected around Thu, Jul 09, 2026
Regular price $13.77 AUD
Regular price Sale price $13.77 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 3 available can be backordered.
Extension Springs - 3.18x152.4x0.38 mm Music Wire - Steel Spring
OD (D0)
3.18
mm
Overall Length (L0)
152.4
mm
Wire Diameter (d)
0.38
mm
Extension Springs - 3.18x152.4x0.38 mm - Steel
Material: Steel    Spring Rate: 0.02 N/mm    Initial Tension (IT): 0.0 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0318-1524-04-M (Each)
3 Available Now | Further orders can be expected around Thu, Jul 09, 2026
Regular price $13.77 AUD
Regular price Sale price $13.77 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

3 Available Now. Backorder if more than 3.
Extension Springs - 3.18x203.2x0.38 mm Music Wire - Steel Spring
OD (D0)
3.18
mm
Overall Length (L0)
203.2
mm
Wire Diameter (d)
0.38
mm
Spring Rate
0.02
N/mm
Initial Tension (IT)
0.0
N
Extension Springs - 3.18x203.2x0.38 mm - Steel
Material: Steel   
Category: Springs - Extension - Music Wire
Part Number: ES-0318-2032-04-M (Each)
5 Available Now | Further orders can be expected around Thu, Jul 09, 2026
Regular price $12.68 AUD
Regular price Sale price $12.68 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 5 available can be backordered.
Extension Springs - 3.18x203.2x0.38 mm Music Wire - Steel Spring
OD (D0)
3.18
mm
Overall Length (L0)
203.2
mm
Wire Diameter (d)
0.38
mm
Extension Springs - 3.18x203.2x0.38 mm - Steel
Material: Steel    Spring Rate: 0.02 N/mm    Initial Tension (IT): 0.0 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0318-2032-04-M (Each)
5 Available Now | Further orders can be expected around Thu, Jul 09, 2026
Regular price $12.68 AUD
Regular price Sale price $12.68 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

5 Available Now. Backorder if more than 5.
Extension Springs - 3.18x279.4x0.41 mm Music Wire - Steel Spring
OD (D0)
3.18
mm
Overall Length (L0)
279.4
mm
Wire Diameter (d)
0.41
mm
Spring Rate
0.02
N/mm
Initial Tension (IT)
0.0
N
Extension Springs - 3.18x279.4x0.41 mm - Steel
Material: Steel   
Category: Springs - Extension - Music Wire
Part Number: ES-0318-2794-04-M (Each)
8 Available Now | Further orders can be expected around Thu, Jul 09, 2026
Regular price $11.41 AUD
Regular price Sale price $11.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 8 available can be backordered.
Extension Springs - 3.18x279.4x0.41 mm Music Wire - Steel Spring
OD (D0)
3.18
mm
Overall Length (L0)
279.4
mm
Wire Diameter (d)
0.41
mm
Extension Springs - 3.18x279.4x0.41 mm - Steel
Material: Steel    Spring Rate: 0.02 N/mm    Initial Tension (IT): 0.0 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0318-2794-04-M (Each)
8 Available Now | Further orders can be expected around Thu, Jul 09, 2026
Regular price $11.41 AUD
Regular price Sale price $11.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

8 Available Now. Backorder if more than 8.
Extension Springs - 3.18x508x0.43 mm - Stainless Steel Spring
OD (D0)
3.18
mm
Overall Length (L0)
508.0
mm
Wire Diameter (d)
0.43
mm
Spring Rate
0.25
N/mm
Initial Tension (IT)
0.3
N
Extension Springs - 3.18x508x0.43 mm - Stainless Steel
Material: Stainless Steel   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0318-5080-04-S2 (Each)
1 Available Now | Further orders can be expected around Thu, Jul 09, 2026
Regular price $39.05 AUD
Regular price $74.80 AUD Sale price $39.05 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 1 available can be backordered.
Extension Springs - 3.18x508x0.43 mm - Stainless Steel Spring
OD (D0)
3.18
mm
Overall Length (L0)
508.0
mm
Wire Diameter (d)
0.43
mm
Extension Springs - 3.18x508x0.43 mm - Stainless Steel
Material: Stainless Steel    Spring Rate: 0.25 N/mm    Initial Tension (IT): 0.3 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0318-5080-04-S2 (Each)
1 Available Now | Further orders can be expected around Thu, Jul 09, 2026
Regular price $39.05 AUD
Regular price $74.80 AUD Sale price $39.05 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

1 Available Now. Backorder if more than 1.
Extension Springs - 3.5x11.1x0.7 mm - Stainless Steel 302/304 Similar to A2, 18-8 Spring
OD (D0)
3.50
mm
Overall Length (L0)
11.1
mm
Wire Diameter (d)
0.70
mm
Max. Extension (L1)
13.46
mm
Spring Rate
9.25
N/mm
Initial Tension (IT)
3.7
N
Extension Springs - 3.5x11.1x0.7 mm - Stainless Steel 302/304 Similar to A2, 18-8
Material: Stainless Steel 302/304 (Similar to A2, 18-8)    Load at L1: 25.58 N   
Category: Springs - Extension - Stainless Steel
Deleted Item. Available while stocks last.
Part Number: ES-0350-0111-07-S2 (Each)
1 Available Now | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $27.21 AUD
Regular price $51.70 AUD Sale price $27.21 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

1 Available Now. These are priced to quit. Please contact us for a quote if you require more.
Extension Springs - 3.5x11.1x0.7 mm - Stainless Steel 302/304 Similar to A2, 18-8 Spring
OD (D0)
3.50
mm
Overall Length (L0)
11.1
mm
Wire Diameter (d)
0.70
mm
Max. Extension (L1)
13.46
mm
Extension Springs - 3.5x11.1x0.7 mm - Stainless Steel 302/304 Similar to A2, 18-8
Material: Stainless Steel 302/304 (Similar to A2, 18-8)    Spring Rate: 9.25 N/mm    Initial Tension (IT): 3.7 N    Load at L1: 25.58 N   
Category: Springs - Extension - Stainless Steel
Deleted Item. Available while stocks last.
Part Number: ES-0350-0111-07-S2 (Each)
1 Available Now | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $27.21 AUD
Regular price $51.70 AUD Sale price $27.21 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

1 Available Now. These are priced to quit. Please contact us for a quote if you require more.
Extension Springs - 3.96x279.4x0.41 mm Music Wire - Steel Spring
OD (D0)
3.96
mm
Overall Length (L0)
279.4
mm
Wire Diameter (d)
0.41
mm
Spring Rate
0.01
N/mm
Initial Tension (IT)
0.0
N
Extension Springs - 3.96x279.4x0.41 mm - Steel
Material: Steel   
Category: Springs - Extension - Music Wire
Part Number: ES-0396-2794-04-M (Each)
9 Available Now | Further orders can be expected around Thu, Jul 09, 2026
Regular price $18.05 AUD
Regular price Sale price $18.05 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 9 available can be backordered.
Extension Springs - 3.96x279.4x0.41 mm Music Wire - Steel Spring
OD (D0)
3.96
mm
Overall Length (L0)
279.4
mm
Wire Diameter (d)
0.41
mm
Extension Springs - 3.96x279.4x0.41 mm - Steel
Material: Steel    Spring Rate: 0.01 N/mm    Initial Tension (IT): 0.0 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0396-2794-04-M (Each)
9 Available Now | Further orders can be expected around Thu, Jul 09, 2026
Regular price $18.05 AUD
Regular price Sale price $18.05 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

9 Available Now. Backorder if more than 9.
Extension Springs - 4x20x0.35 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80 Spring
OD (D0)
4.00
mm
Overall Length (L0)
20
mm
Wire Diameter (d)
0.350
mm
Max. Extension (L1)
44.10
mm
Spring Rate
0.08
N/mm
Initial Tension (IT)
0.2
N
Extension Springs - 4x20x0.35 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80    Load at L1: 2.26 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0400-0200-035-S4 (PK-5)
3 units (15 pcs) Available Now | Further orders can be expected around Thu, Jul 23, 2026
Regular price $4.86 AUD
Regular price $9.23 AUD Sale price $4.86 AUD
Priced, Stocked and Sold Per 5 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 3 available can be backordered.
Extension Springs - 4x20x0.35 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80 Spring
OD (D0)
4.00
mm
Overall Length (L0)
20
mm
Wire Diameter (d)
0.350
mm
Max. Extension (L1)
44.10
mm
Extension Springs - 4x20x0.35 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80    Spring Rate: 0.08 N/mm    Initial Tension (IT): 0.2 N    Load at L1: 2.26 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0400-0200-035-S4 (PK-5)
3 units (15 pcs) Available Now | Further orders can be expected around Thu, Jul 23, 2026
Regular price $4.86 AUD
Regular price $9.23 AUD Sale price $4.86 AUD
Priced, Stocked and Sold Per 5 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

3 units (15 pcs) Available Now. Backorder if more than 3.
Extension Springs - 4.5x12.1x0.63 mm - Stainless Steel 302/304 Similar to A2, 18-8 Spring
OD (D0)
4.50
mm
Overall Length (L0)
12.1
mm
Wire Diameter (d)
0.63
mm
Max. Extension (L1)
17.75
mm
Spring Rate
2.31
N/mm
Initial Tension (IT)
2.2
N
Extension Springs - 4.5x12.1x0.63 mm - Stainless Steel 302/304 Similar to A2, 18-8
Material: Stainless Steel 302/304 (Similar to A2, 18-8)    Load at L1: 15.25 N   
Category: Springs - Extension - Stainless Steel
Deleted Item. Available while stocks last.
Part Number: ES-0450-0121-06-S2 (PK-4)
1 pack (4 pcs) Available Now | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $26.85 AUD
Regular price $51.02 AUD Sale price $26.85 AUD
Priced, Stocked and Sold Per 4 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

1 pack (4 pcs) Available Now. These are priced to quit. Please contact us for a quote if you require more.
Extension Springs - 4.5x12.1x0.63 mm - Stainless Steel 302/304 Similar to A2, 18-8 Spring
OD (D0)
4.50
mm
Overall Length (L0)
12.1
mm
Wire Diameter (d)
0.63
mm
Max. Extension (L1)
17.75
mm
Extension Springs - 4.5x12.1x0.63 mm - Stainless Steel 302/304 Similar to A2, 18-8
Material: Stainless Steel 302/304 (Similar to A2, 18-8)    Spring Rate: 2.31 N/mm    Initial Tension (IT): 2.2 N    Load at L1: 15.25 N   
Category: Springs - Extension - Stainless Steel
Deleted Item. Available while stocks last.
Part Number: ES-0450-0121-06-S2 (PK-4)
1 pack (4 pcs) Available Now | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $26.85 AUD
Regular price $51.02 AUD Sale price $26.85 AUD
Priced, Stocked and Sold Per 4 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

1 pack (4 pcs) Available Now. These are priced to quit. Please contact us for a quote if you require more.
Extension Springs - 4.57x15.8x0.79 mm - Stainless Steel 302/304 Similar to A2, 18-8 Spring
OD (D0)
4.57
mm
Overall Length (L0)
15.8
mm
Wire Diameter (d)
0.79
mm
Max. Extension (L1)
20.066
mm
Spring Rate
5.52
N/mm
Initial Tension (IT)
4.0
N
Extension Springs - 4.57x15.8x0.79 mm - Stainless Steel 302/304 Similar to A2, 18-8
Material: Stainless Steel 302/304 (Similar to A2, 18-8)    Load at L1: 5.66 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0457-0158-08-S2 (Each)
2 Available Now | Further orders can be expected around Sat, Jul 25, 2026
Regular price $7.14 AUD
Regular price $13.29 AUD Sale price $7.14 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 2 available can be backordered.
Extension Springs - 4.57x15.8x0.79 mm - Stainless Steel 302/304 Similar to A2, 18-8 Spring
OD (D0)
4.57
mm
Overall Length (L0)
15.8
mm
Wire Diameter (d)
0.79
mm
Max. Extension (L1)
20.066
mm
Extension Springs - 4.57x15.8x0.79 mm - Stainless Steel 302/304 Similar to A2, 18-8
Material: Stainless Steel 302/304 (Similar to A2, 18-8)    Spring Rate: 5.52 N/mm    Initial Tension (IT): 4.0 N    Load at L1: 5.66 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0457-0158-08-S2 (Each)
2 Available Now | Further orders can be expected around Sat, Jul 25, 2026
Regular price $7.14 AUD
Regular price $13.29 AUD Sale price $7.14 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

2 Available Now. Backorder if more than 2.
Extension Springs - 4.57x12.7x0.56 mm Music Wire - Steel Spring
OD (D0)
4.57
mm
Overall Length (L0)
12.7
mm
Wire Diameter (d)
0.56
mm
Max. Extension (L1)
18.540
mm
Spring Rate
1.839
N/mm
Initial Tension (IT)
0.8
N
Extension Springs - 4.57x12.7x0.56 mm - Steel
Material: Steel    Load at L1: 9.250 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0127-06-M (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Aug 13, 2026
Regular price $11.50 AUD
Regular price Sale price $11.50 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Extension Springs - 4.57x12.7x0.56 mm Music Wire - Steel Spring
OD (D0)
4.57
mm
Overall Length (L0)
12.7
mm
Wire Diameter (d)
0.56
mm
Max. Extension (L1)
18.540
mm
Extension Springs - 4.57x12.7x0.56 mm - Steel
Material: Steel    Spring Rate: 1.839 N/mm    Initial Tension (IT): 0.8 N    Load at L1: 9.250 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0127-06-M (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Aug 13, 2026
Regular price $11.50 AUD
Regular price Sale price $11.50 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Extension Springs - 4.57x19.1x0.51 mm Music Wire - Steel Spring
OD (D0)
4.57
mm
Overall Length (L0)
19.1
mm
Wire Diameter (d)
0.51
mm
Max. Extension (L1)
37.080
mm
Spring Rate
0.473
N/mm
Initial Tension (IT)
0.8
N
Extension Springs - 4.57x19.1x0.51 mm - Steel
Material: Steel    Load at L1: 9.250 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0191-05-M (Each)
1 Available Now | Further orders can be expected around Thu, Aug 13, 2026
Regular price $4.50 AUD
Regular price $10.91 AUD Sale price $4.50 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 1 available can be backordered.
Extension Springs - 4.57x19.1x0.51 mm Music Wire - Steel Spring
OD (D0)
4.57
mm
Overall Length (L0)
19.1
mm
Wire Diameter (d)
0.51
mm
Max. Extension (L1)
37.080
mm
Extension Springs - 4.57x19.1x0.51 mm - Steel
Material: Steel    Spring Rate: 0.473 N/mm    Initial Tension (IT): 0.8 N    Load at L1: 9.250 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0191-05-M (Each)
1 Available Now | Further orders can be expected around Thu, Aug 13, 2026
Regular price $4.50 AUD
Regular price $10.91 AUD Sale price $4.50 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

1 Available Now. Backorder if more than 1.
Extension Springs - 4.57x50.8x0.51 mm Music Wire - Steel Spring
OD (D0)
4.57
mm
Overall Length (L0)
50.8
mm
Wire Diameter (d)
0.51
mm
Max. Extension (L1)
122.170
mm
Spring Rate
0.123
N/mm
Initial Tension (IT)
0.8
N
Extension Springs - 4.57x50.8x0.51 mm - Steel
Material: Steel    Load at L1: 9.250 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0508-05-M (Each)
2 Available Now | Further orders can be expected around Thu, Aug 13, 2026
Regular price $4.68 AUD
Regular price $11.41 AUD Sale price $4.68 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 2 available can be backordered.
Extension Springs - 4.57x50.8x0.51 mm Music Wire - Steel Spring
OD (D0)
4.57
mm
Overall Length (L0)
50.8
mm
Wire Diameter (d)
0.51
mm
Max. Extension (L1)
122.170
mm
Extension Springs - 4.57x50.8x0.51 mm - Steel
Material: Steel    Spring Rate: 0.123 N/mm    Initial Tension (IT): 0.8 N    Load at L1: 9.250 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0508-05-M (Each)
2 Available Now | Further orders can be expected around Thu, Aug 13, 2026
Regular price $4.68 AUD
Regular price $11.41 AUD Sale price $4.68 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

2 Available Now. Backorder if more than 2.
Extension Springs - 4.75x38.1x0.64 mm Stainless Steel - Steel - Zinc Spring
OD (D0)
4.75
mm
Overall Length (L0)
38.1
mm
Wire Diameter (d)
0.64
mm
Spring Rate
0.46
N/mm
Initial Tension (IT)
0.5
N
Extension Springs - 4.75x38.1x0.64 mm - Steel - Zinc
Material: Steel - Zinc   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0475-0381-06-M (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Jul 09, 2026
Regular price $7.86 AUD
Regular price Sale price $7.86 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Extension Springs - 4.75x38.1x0.64 mm Stainless Steel - Steel - Zinc Spring
OD (D0)
4.75
mm
Overall Length (L0)
38.1
mm
Wire Diameter (d)
0.64
mm
Extension Springs - 4.75x38.1x0.64 mm - Steel - Zinc
Material: Steel - Zinc    Spring Rate: 0.46 N/mm    Initial Tension (IT): 0.5 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0475-0381-06-M (Each)
Out of Stock | Backorder Now | Backorder now for delivery around Thu, Jul 09, 2026
Regular price $7.86 AUD
Regular price Sale price $7.86 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Extension Springs - 5x15x0.45 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80 Spring
OD (D0)
5.00
mm
Overall Length (L0)
15
mm
Wire Diameter (d)
0.450
mm
Max. Extension (L1)
23.20
mm
Spring Rate
0.33
N/mm
Initial Tension (IT)
0.5
N
Extension Springs - 5x15x0.45 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80    Load at L1: 3.24 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0500-0150-045-S4 (PK-5)
8 units (40 pcs) Available Now | Further orders can be expected around Thu, Jul 23, 2026
Regular price $5.86 AUD
Regular price $7.04 AUD Sale price $5.86 AUD
Priced, Stocked and Sold Per 5 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 8 available can be backordered.
Extension Springs - 5x15x0.45 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80 Spring
OD (D0)
5.00
mm
Overall Length (L0)
15
mm
Wire Diameter (d)
0.450
mm
Max. Extension (L1)
23.20
mm
Extension Springs - 5x15x0.45 mm - Stainless Steel 304 Similar to A2, 18-8 HRB80
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80    Spring Rate: 0.33 N/mm    Initial Tension (IT): 0.5 N    Load at L1: 3.24 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0500-0150-045-S4 (PK-5)
8 units (40 pcs) Available Now | Further orders can be expected around Thu, Jul 23, 2026
Regular price $5.86 AUD
Regular price $7.04 AUD Sale price $5.86 AUD
Priced, Stocked and Sold Per 5 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

8 units (40 pcs) Available Now. Backorder if more than 8.
Extension Springs - 5x20x0.5 mm Music Wire - Steel Spring
OD (D0)
5.00
mm
Overall Length (L0)
20
mm
Wire Diameter (d)
0.500
mm
Max. Extension (L1)
31.70
mm
Spring Rate
0.28
N/mm
Initial Tension (IT)
0.9
N
Extension Springs - 5x20x0.5 mm - Steel
Material: Steel    Load at L1: 4.22 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0500-0200-05-M (PK-5)
2 units (10 pcs) Available Now | Further orders can be expected around Thu, Jul 23, 2026
Regular price $10.77 AUD
Regular price Sale price $10.77 AUD
Priced, Stocked and Sold Per 5 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 2 available can be backordered.
Extension Springs - 5x20x0.5 mm Music Wire - Steel Spring
OD (D0)
5.00
mm
Overall Length (L0)
20
mm
Wire Diameter (d)
0.500
mm
Max. Extension (L1)
31.70
mm
Extension Springs - 5x20x0.5 mm - Steel
Material: Steel    Spring Rate: 0.28 N/mm    Initial Tension (IT): 0.9 N    Load at L1: 4.22 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0500-0200-05-M (PK-5)
2 units (10 pcs) Available Now | Further orders can be expected around Thu, Jul 23, 2026
Regular price $10.77 AUD
Regular price Sale price $10.77 AUD
Priced, Stocked and Sold Per 5 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

2 units (10 pcs) Available Now. Backorder if more than 2.
Extension Springs - 5x20x0.6 mm Music Wire - Steel Spring
OD (D0)
5.00
mm
Overall Length (L0)
20
mm
Wire Diameter (d)
0.600
mm
Max. Extension (L1)
28.90
mm
Spring Rate
0.78
N/mm
Initial Tension (IT)
1.6
N
Extension Springs - 5x20x0.6 mm - Steel
Material: Steel    Load at L1: 8.53 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0500-0200-06-M (PK-5)
2 units (10 pcs) Available Now | Further orders can be expected around Thu, Jul 23, 2026
Regular price $10.77 AUD
Regular price Sale price $10.77 AUD
Priced, Stocked and Sold Per 5 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 2 available can be backordered.
Extension Springs - 5x20x0.6 mm Music Wire - Steel Spring
OD (D0)
5.00
mm
Overall Length (L0)
20
mm
Wire Diameter (d)
0.600
mm
Max. Extension (L1)
28.90
mm
Extension Springs - 5x20x0.6 mm - Steel
Material: Steel    Spring Rate: 0.78 N/mm    Initial Tension (IT): 1.6 N    Load at L1: 8.53 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0500-0200-06-M (PK-5)
2 units (10 pcs) Available Now | Further orders can be expected around Thu, Jul 23, 2026
Regular price $10.77 AUD
Regular price Sale price $10.77 AUD
Priced, Stocked and Sold Per 5 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

2 units (10 pcs) Available Now. Backorder if more than 2.
Extension Springs - 5x20x0.7 mm Music Wire - Steel Spring
OD (D0)
5.00
mm
Overall Length (L0)
20
mm
Wire Diameter (d)
0.700
mm
Max. Extension (L1)
26.90
mm
Spring Rate
1.77
N/mm
Initial Tension (IT)
2.4
N
Extension Springs - 5x20x0.7 mm - Steel
Material: Steel    Load at L1: 14.71 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0500-0200-07-M (PK-5)
1 pack (5 pcs) Available Now | Further orders can be expected around Thu, Jul 23, 2026
Regular price $10.77 AUD
Regular price Sale price $10.77 AUD
Priced, Stocked and Sold Per 5 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 1 available can be backordered.
Extension Springs - 5x20x0.7 mm Music Wire - Steel Spring
OD (D0)
5.00
mm
Overall Length (L0)
20
mm
Wire Diameter (d)
0.700
mm
Max. Extension (L1)
26.90
mm
Extension Springs - 5x20x0.7 mm - Steel
Material: Steel    Spring Rate: 1.77 N/mm    Initial Tension (IT): 2.4 N    Load at L1: 14.71 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0500-0200-07-M (PK-5)
1 pack (5 pcs) Available Now | Further orders can be expected around Thu, Jul 23, 2026
Regular price $10.77 AUD
Regular price Sale price $10.77 AUD
Priced, Stocked and Sold Per 5 Units
Excludes GST and overseas Taxes & Duties
Quantity Required

1 pack (5 pcs) Available Now. Backorder if more than 1.
Extension Springs - 5.5x19.8x0.8 mm - Stainless Steel 302/304 Similar to A2, 18-8 Spring
OD (D0)
5.50
mm
Overall Length (L0)
19.8
mm
Wire Diameter (d)
0.80
mm
Max. Extension (L1)
30.00
mm
Spring Rate
2.08
N/mm
Initial Tension (IT)
4.0
N
Extension Springs - 5.5x19.8x0.8 mm - Stainless Steel 302/304 Similar to A2, 18-8
Material: Stainless Steel 302/304 (Similar to A2, 18-8)    Load at L1: 25.17 N   
Category: Springs - Extension - Stainless Steel
Deleted Item. Available while stocks last.
Part Number: ES-0550-0198-08-S2 (Each)
1 Available Now | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $27.21 AUD
Regular price $51.70 AUD Sale price $27.21 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

1 Available Now. These are priced to quit. Please contact us for a quote if you require more.
Extension Springs - 5.5x19.8x0.8 mm - Stainless Steel 302/304 Similar to A2, 18-8 Spring
OD (D0)
5.50
mm
Overall Length (L0)
19.8
mm
Wire Diameter (d)
0.80
mm
Max. Extension (L1)
30.00
mm
Extension Springs - 5.5x19.8x0.8 mm - Stainless Steel 302/304 Similar to A2, 18-8
Material: Stainless Steel 302/304 (Similar to A2, 18-8)    Spring Rate: 2.08 N/mm    Initial Tension (IT): 4.0 N    Load at L1: 25.17 N   
Category: Springs - Extension - Stainless Steel
Deleted Item. Available while stocks last.
Part Number: ES-0550-0198-08-S2 (Each)
1 Available Now | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $27.21 AUD
Regular price $51.70 AUD Sale price $27.21 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

1 Available Now. These are priced to quit. Please contact us for a quote if you require more.
Extension Springs - 5.5x27.7x0.5 mm - Stainless Steel 302/304 Similar to A2, 18-8 Spring
OD (D0)
5.50
mm
Overall Length (L0)
27.7
mm
Wire Diameter (d)
0.50
mm
Max. Extension (L1)
80.00
mm
Spring Rate
0.26
N/mm
Initial Tension (IT)
2.1
N
Extension Springs - 5.5x27.7x0.5 mm - Stainless Steel 302/304 Similar to A2, 18-8
Material: Stainless Steel 302/304 (Similar to A2, 18-8)    Load at L1: 6.50 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0550-0277-05-S2 (Each)
39 Available Now | Further orders can be expected around Thu, Aug 13, 2026
Regular price $7.41 AUD
Regular price $13.85 AUD Sale price $7.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 39 available can be backordered.
Extension Springs - 5.5x27.7x0.5 mm - Stainless Steel 302/304 Similar to A2, 18-8 Spring
OD (D0)
5.50
mm
Overall Length (L0)
27.7
mm
Wire Diameter (d)
0.50
mm
Max. Extension (L1)
80.00
mm
Extension Springs - 5.5x27.7x0.5 mm - Stainless Steel 302/304 Similar to A2, 18-8
Material: Stainless Steel 302/304 (Similar to A2, 18-8)    Spring Rate: 0.26 N/mm    Initial Tension (IT): 2.1 N    Load at L1: 6.50 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0550-0277-05-S2 (Each)
39 Available Now | Further orders can be expected around Thu, Aug 13, 2026
Regular price $7.41 AUD
Regular price $13.85 AUD Sale price $7.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

39 Available Now. Backorder if more than 39.
Extension Springs - 6.1x19.1x0.66 mm - Stainless Steel 302/304 Similar to A2, 18-8 Spring
OD (D0)
6.10
mm
Overall Length (L0)
19.1
mm
Wire Diameter (d)
0.66
mm
Max. Extension (L1)
32.766
mm
Spring Rate
0.82
N/mm
Initial Tension (IT)
0.4
N
Extension Springs - 6.1x19.1x0.66 mm - Stainless Steel 302/304 Similar to A2, 18-8
Material: Stainless Steel 302/304 (Similar to A2, 18-8)    Load at L1: 2.75 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0610-0191-06-S2 (Each)
2 Available Now | Further orders can be expected around Sat, Jul 25, 2026
Regular price $13.50 AUD
Regular price Sale price $13.50 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 2 available can be backordered.
Extension Springs - 6.1x19.1x0.66 mm - Stainless Steel 302/304 Similar to A2, 18-8 Spring
OD (D0)
6.10
mm
Overall Length (L0)
19.1
mm
Wire Diameter (d)
0.66
mm
Max. Extension (L1)
32.766
mm
Extension Springs - 6.1x19.1x0.66 mm - Stainless Steel 302/304 Similar to A2, 18-8
Material: Stainless Steel 302/304 (Similar to A2, 18-8)    Spring Rate: 0.82 N/mm    Initial Tension (IT): 0.4 N    Load at L1: 2.75 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0610-0191-06-S2 (Each)
2 Available Now | Further orders can be expected around Sat, Jul 25, 2026
Regular price $13.50 AUD
Regular price Sale price $13.50 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

2 Available Now. Backorder if more than 2.
Extension Springs - 6.1x19.1x0.56 mm Music Wire - Steel Spring
OD (D0)
6.10
mm
Overall Length (L0)
19.1
mm
Wire Diameter (d)
0.56
mm
Max. Extension (L1)
38.860
mm
Spring Rate
0.420
N/mm
Initial Tension (IT)
0.8
N
Extension Springs - 6.1x19.1x0.56 mm - Steel
Material: Steel    Load at L1: 9.210 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0610-0191-06-M (Each)
4 Available Now | Further orders can be expected around Thu, Aug 13, 2026
Regular price $4.68 AUD
Regular price $11.38 AUD Sale price $4.68 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 4 available can be backordered.
Extension Springs - 6.1x19.1x0.56 mm Music Wire - Steel Spring
OD (D0)
6.10
mm
Overall Length (L0)
19.1
mm
Wire Diameter (d)
0.56
mm
Max. Extension (L1)
38.860
mm
Extension Springs - 6.1x19.1x0.56 mm - Steel
Material: Steel    Spring Rate: 0.420 N/mm    Initial Tension (IT): 0.8 N    Load at L1: 9.210 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0610-0191-06-M (Each)
4 Available Now | Further orders can be expected around Thu, Aug 13, 2026
Regular price $4.68 AUD
Regular price $11.38 AUD Sale price $4.68 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

4 Available Now. Backorder if more than 4.
Extension Springs - 6.1x44.5x0.56 mm Music Wire - Steel Spring
OD (D0)
6.10
mm
Overall Length (L0)
44.5
mm
Wire Diameter (d)
0.56
mm
Max. Extension (L1)
131.060
mm
Spring Rate
0.105
N/mm
Initial Tension (IT)
0.8
N
Extension Springs - 6.1x44.5x0.56 mm - Steel
Material: Steel    Load at L1: 9.210 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0610-0445-06-M (Each)
3 Available Now | Further orders can be expected around Thu, Aug 13, 2026
Regular price $4.95 AUD
Regular price $12.10 AUD Sale price $4.95 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 3 available can be backordered.
Extension Springs - 6.1x44.5x0.56 mm Music Wire - Steel Spring
OD (D0)
6.10
mm
Overall Length (L0)
44.5
mm
Wire Diameter (d)
0.56
mm
Max. Extension (L1)
131.060
mm
Extension Springs - 6.1x44.5x0.56 mm - Steel
Material: Steel    Spring Rate: 0.105 N/mm    Initial Tension (IT): 0.8 N    Load at L1: 9.210 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0610-0445-06-M (Each)
3 Available Now | Further orders can be expected around Thu, Aug 13, 2026
Regular price $4.95 AUD
Regular price $12.10 AUD Sale price $4.95 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

3 Available Now. Backorder if more than 3.
Extension Springs - 6.35x47.6x0.58 mm Stainless Steel - Steel - Zinc Spring
OD (D0)
6.35
mm
Overall Length (L0)
47.6
mm
Wire Diameter (d)
0.58
mm
Spring Rate
0.09
N/mm
Initial Tension (IT)
0.1
N
Extension Springs - 6.35x47.6x0.58 mm - Steel - Zinc
Material: Steel - Zinc   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0635-0476-06-M (Each)
20 Available Now | Further orders can be expected around Thu, Jul 09, 2026
Regular price $9.95 AUD
Regular price Sale price $9.95 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 20 available can be backordered.
Extension Springs - 6.35x47.6x0.58 mm Stainless Steel - Steel - Zinc Spring
OD (D0)
6.35
mm
Overall Length (L0)
47.6
mm
Wire Diameter (d)
0.58
mm
Extension Springs - 6.35x47.6x0.58 mm - Steel - Zinc
Material: Steel - Zinc    Spring Rate: 0.09 N/mm    Initial Tension (IT): 0.1 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0635-0476-06-M (Each)
20 Available Now | Further orders can be expected around Thu, Jul 09, 2026
Regular price $9.95 AUD
Regular price Sale price $9.95 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

20 Available Now. Backorder if more than 20.