Springs - Extension - Music Wire

24 Products in this selection

A selection of Music Wire Extension Springs. Carbon spring steel, zinc plated selection.

  • 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.
  • Zinc Plated Spring Steel not recommended for applications exceeding 121 Deg C (250 Deg F).
Small Parts & Bearings

Additional resources:
Spings Catalogue PDF
Assortment Kits
Spring Anchors

A more comprehensive listing may be found on the MBA Minibearings main store at Springs - Extension - Music Wire.
OD (D0) Overall Length (L0) Wire Diameter (d) Max. Extension (L1) Spring Rate Initial Tension (IT) Indicative
Image
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   
Part Number: ES-0318-1524-04-M (Each) Extension Springs - 3.18x152.4x0.38 mm Music Wire - Steel Spring
3 Available Now | Further orders can be expected around Wed, Jul 22, 2026
$15.50 AUD
$15.50 AUD
Each
OD (D0) Overall Length (L0) Wire Diameter (d) Max. Extension (L1) Indicative
Image
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   
Part Number: ES-0318-1524-04-M (Each) Extension Springs - 3.18x152.4x0.38 mm Music Wire - Steel Spring
3 Available Now | Further orders can be expected around Wed, Jul 22, 2026
$15.50 AUD
$15.50 AUD
Each
View the product page first if you are unsure.
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   
Part Number: ES-0318-2032-04-M (Each) Extension Springs - 3.18x203.2x0.38 mm Music Wire - Steel Spring
5 Available Now | Further orders can be expected around Wed, Jul 22, 2026
$14.23 AUD
$14.23 AUD
Each
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   
Part Number: ES-0318-2032-04-M (Each) Extension Springs - 3.18x203.2x0.38 mm Music Wire - Steel Spring
5 Available Now | Further orders can be expected around Wed, Jul 22, 2026
$14.23 AUD
$14.23 AUD
Each
View the product page first if you are unsure.
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   
Part Number: ES-0318-2794-04-M (Each) Extension Springs - 3.18x279.4x0.41 mm Music Wire - Steel Spring
8 Available Now | Further orders can be expected around Wed, Jul 22, 2026
$16.68 AUD
$16.68 AUD
Each
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   
Part Number: ES-0318-2794-04-M (Each) Extension Springs - 3.18x279.4x0.41 mm Music Wire - Steel Spring
8 Available Now | Further orders can be expected around Wed, Jul 22, 2026
$16.68 AUD
$16.68 AUD
Each
View the product page first if you are unsure.
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   
Part Number: ES-0396-2794-04-M (Each) Extension Springs - 3.96x279.4x0.41 mm Music Wire - Steel Spring
9 Available Now | Further orders can be expected around Wed, Jul 22, 2026
$20.86 AUD
$20.86 AUD
Each
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   
Part Number: ES-0396-2794-04-M (Each) Extension Springs - 3.96x279.4x0.41 mm Music Wire - Steel Spring
9 Available Now | Further orders can be expected around Wed, Jul 22, 2026
$20.86 AUD
$20.86 AUD
Each
View the product page first if you are unsure.
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    End Type: Closed - Full Loop   
Part Number: ES-0457-0127-06-M (Each) Extension Springs - 4.57x12.7x0.56 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Wed, Aug 26, 2026
$11.50 AUD
$11.50 AUD
Each
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    End Type: Closed - Full Loop   
Part Number: ES-0457-0127-06-M (Each) Extension Springs - 4.57x12.7x0.56 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Wed, Aug 26, 2026
$11.50 AUD
$11.50 AUD
Each
View the product page first if you are unsure.
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    End Type: Closed - Full Loop   
Part Number: ES-0457-0191-05-M (Each) Extension Springs - 4.57x19.1x0.51 mm Music Wire - Steel Spring
1 Available Now | Further orders can be expected around Wed, Aug 26, 2026
$4.50 AUD
$10.91 AUD $4.50 AUD
Each
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    End Type: Closed - Full Loop   
Part Number: ES-0457-0191-05-M (Each) Extension Springs - 4.57x19.1x0.51 mm Music Wire - Steel Spring
1 Available Now | Further orders can be expected around Wed, Aug 26, 2026
$4.50 AUD
$10.91 AUD $4.50 AUD
Each
View the product page first if you are unsure.
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    End Type: Closed - Full Loop   
Part Number: ES-0457-0508-05-M (Each) Extension Springs - 4.57x50.8x0.51 mm Music Wire - Steel Spring
2 Available Now | Further orders can be expected around Wed, Aug 26, 2026
$4.68 AUD
$11.41 AUD $4.68 AUD
Each
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    End Type: Closed - Full Loop   
Part Number: ES-0457-0508-05-M (Each) Extension Springs - 4.57x50.8x0.51 mm Music Wire - Steel Spring
2 Available Now | Further orders can be expected around Wed, Aug 26, 2026
$4.68 AUD
$11.41 AUD $4.68 AUD
Each
View the product page first if you are unsure.
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   
Part Number: ES-0475-0381-06-M (Each) Extension Springs - 4.75x38.1x0.64 mm Stainless Steel - Steel - Zinc Spring
Out of Stock | Backorder Now | Orders can be expected around Wed, Jul 22, 2026
$8.86 AUD
$8.86 AUD
Each
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   
Part Number: ES-0475-0381-06-M (Each) Extension Springs - 4.75x38.1x0.64 mm Stainless Steel - Steel - Zinc Spring
Out of Stock | Backorder Now | Orders can be expected around Wed, Jul 22, 2026
$8.86 AUD
$8.86 AUD
Each
View the product page first if you are unsure.
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   
Part Number: ES-0500-0200-05-M (PK-5) Extension Springs - 5x20x0.5 mm Music Wire - Steel Spring
2 units (10 pcs) Available Now | Further orders can be expected around Wed, Aug 05, 2026
$10.77 AUD
$10.77 AUD
Per 5
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   
Part Number: ES-0500-0200-05-M (PK-5) Extension Springs - 5x20x0.5 mm Music Wire - Steel Spring
2 units (10 pcs) Available Now | Further orders can be expected around Wed, Aug 05, 2026
$10.77 AUD
$10.77 AUD
Per 5
View the product page first if you are unsure.
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   
Part Number: ES-0500-0200-06-M (PK-5) Extension Springs - 5x20x0.6 mm Music Wire - Steel Spring
2 units (10 pcs) Available Now | Further orders can be expected around Wed, Aug 05, 2026
$10.77 AUD
$10.77 AUD
Per 5
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   
Part Number: ES-0500-0200-06-M (PK-5) Extension Springs - 5x20x0.6 mm Music Wire - Steel Spring
2 units (10 pcs) Available Now | Further orders can be expected around Wed, Aug 05, 2026
$10.77 AUD
$10.77 AUD
Per 5
View the product page first if you are unsure.
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   
Part Number: ES-0500-0200-07-M (PK-5) Extension Springs - 5x20x0.7 mm Music Wire - Steel Spring
1 pack (5 pcs) Available Now | Further orders can be expected around Wed, Aug 05, 2026
$10.77 AUD
$10.77 AUD
Per 5
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   
Part Number: ES-0500-0200-07-M (PK-5) Extension Springs - 5x20x0.7 mm Music Wire - Steel Spring
1 pack (5 pcs) Available Now | Further orders can be expected around Wed, Aug 05, 2026
$10.77 AUD
$10.77 AUD
Per 5
View the product page first if you are unsure.
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    End Type: Closed - Full Loop   
Part Number: ES-0610-0191-06-M (Each) Extension Springs - 6.1x19.1x0.56 mm Music Wire - Steel Spring
4 Available Now | Further orders can be expected around Wed, Aug 26, 2026
$4.68 AUD
$11.38 AUD $4.68 AUD
Each
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    End Type: Closed - Full Loop   
Part Number: ES-0610-0191-06-M (Each) Extension Springs - 6.1x19.1x0.56 mm Music Wire - Steel Spring
4 Available Now | Further orders can be expected around Wed, Aug 26, 2026
$4.68 AUD
$11.38 AUD $4.68 AUD
Each
View the product page first if you are unsure.
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    End Type: Closed - Full Loop   
Part Number: ES-0610-0445-06-M (Each) Extension Springs - 6.1x44.5x0.56 mm Music Wire - Steel Spring
3 Available Now | Further orders can be expected around Wed, Aug 26, 2026
$4.95 AUD
$12.10 AUD $4.95 AUD
Each
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    End Type: Closed - Full Loop   
Part Number: ES-0610-0445-06-M (Each) Extension Springs - 6.1x44.5x0.56 mm Music Wire - Steel Spring
3 Available Now | Further orders can be expected around Wed, Aug 26, 2026
$4.95 AUD
$12.10 AUD $4.95 AUD
Each
View the product page first if you are unsure.
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   
Part Number: ES-0635-0476-06-M (Each) Extension Springs - 6.35x47.6x0.58 mm Stainless Steel - Steel - Zinc Spring
20 Available Now | Further orders can be expected around Wed, Jul 22, 2026
$8.59 AUD
$8.59 AUD
Each
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   
Part Number: ES-0635-0476-06-M (Each) Extension Springs - 6.35x47.6x0.58 mm Stainless Steel - Steel - Zinc Spring
20 Available Now | Further orders can be expected around Wed, Jul 22, 2026
$8.59 AUD
$8.59 AUD
Each
View the product page first if you are unsure.
OD (D0)
7.62
mm
Overall Length (L0)
76.2
mm
Wire Diameter (d)
0.89
mm
Max. Extension (L1)
150.880
mm
Spring Rate
0.385
N/mm
Initial Tension (IT)
2.9
N
Extension Springs - 7.62x76.2x0.89 mm - Steel
Material: Steel    Load at L1: 32.030 N    End Type: Closed - Full Loop   
Part Number: ES-0762-0762-09-M (Each) Extension Springs - 7.62x76.2x0.89 mm Music Wire - Steel Spring
5 Available Now | Further orders can be expected around Wed, Aug 26, 2026
$6.14 AUD
$15.12 AUD $6.14 AUD
Each
OD (D0)
7.62
mm
Overall Length (L0)
76.2
mm
Wire Diameter (d)
0.89
mm
Max. Extension (L1)
150.880
mm
Extension Springs - 7.62x76.2x0.89 mm - Steel
Material: Steel    Spring Rate: 0.385 N/mm    Initial Tension (IT): 2.9 N    Load at L1: 32.030 N    End Type: Closed - Full Loop   
Part Number: ES-0762-0762-09-M (Each) Extension Springs - 7.62x76.2x0.89 mm Music Wire - Steel Spring
5 Available Now | Further orders can be expected around Wed, Aug 26, 2026
$6.14 AUD
$15.12 AUD $6.14 AUD
Each
View the product page first if you are unsure.
OD (D0)
9.53
mm
Overall Length (L0)
279.4
mm
Wire Diameter (d)
0.79
mm
Spring Rate
0.02
N/mm
Initial Tension (IT)
0.0
N
Extension Springs - 9.53x279.4x0.79 mm - Steel
Material: Steel   
Part Number: ES-0953-2794-08-M (Each) Extension Springs - 9.53x279.4x0.79 mm Music Wire - Steel Spring
2 Available Now | Further orders can be expected around Wed, Jul 22, 2026
$25.05 AUD
$25.05 AUD
Each
OD (D0)
9.53
mm
Overall Length (L0)
279.4
mm
Wire Diameter (d)
0.79
mm
Extension Springs - 9.53x279.4x0.79 mm - Steel
Material: Steel    Spring Rate: 0.02 N/mm    Initial Tension (IT): 0.0 N   
Part Number: ES-0953-2794-08-M (Each) Extension Springs - 9.53x279.4x0.79 mm Music Wire - Steel Spring
2 Available Now | Further orders can be expected around Wed, Jul 22, 2026
$25.05 AUD
$25.05 AUD
Each
View the product page first if you are unsure.
OD (D0)
10.00
mm
Overall Length (L0)
30
mm
Wire Diameter (d)
1.600
mm
Max. Extension (L1)
35.20
mm
Spring Rate
10.89
N/mm
Initial Tension (IT)
20.6
N
Extension Springs - 10x30x1.6 mm - Steel
Material: Steel    Load at L1: 77.47 N   
Part Number: ES-1000-0300-16-M (PK-5) Extension Springs - 10x30x1.6 mm Music Wire - Steel Spring
17 units (85 pcs) Available Now | Further orders can be expected around Wed, Aug 05, 2026
$11.05 AUD
$11.05 AUD
Per 5
OD (D0)
10.00
mm
Overall Length (L0)
30
mm
Wire Diameter (d)
1.600
mm
Max. Extension (L1)
35.20
mm
Extension Springs - 10x30x1.6 mm - Steel
Material: Steel    Spring Rate: 10.89 N/mm    Initial Tension (IT): 20.6 N    Load at L1: 77.47 N   
Part Number: ES-1000-0300-16-M (PK-5) Extension Springs - 10x30x1.6 mm Music Wire - Steel Spring
17 units (85 pcs) Available Now | Further orders can be expected around Wed, Aug 05, 2026
$11.05 AUD
$11.05 AUD
Per 5
View the product page first if you are unsure.
OD (D0)
11.10
mm
Overall Length (L0)
114.3
mm
Wire Diameter (d)
0.71
mm
Spring Rate
0.02
N/mm
Initial Tension (IT)
0.0
N
Extension Springs - 11.1x114.3x0.71 mm - Steel - Zinc
Material: Steel - Zinc   
Part Number: ES-1110-1143-07-M (Each) Extension Springs - 11.1x114.3x0.71 mm Stainless Steel - Steel - Zinc Spring
Out of Stock | Backorder Now | Orders can be expected around Wed, Jul 22, 2026
$14.95 AUD
$14.95 AUD
Each
OD (D0)
11.10
mm
Overall Length (L0)
114.3
mm
Wire Diameter (d)
0.71
mm
Extension Springs - 11.1x114.3x0.71 mm - Steel - Zinc
Material: Steel - Zinc    Spring Rate: 0.02 N/mm    Initial Tension (IT): 0.0 N   
Part Number: ES-1110-1143-07-M (Each) Extension Springs - 11.1x114.3x0.71 mm Stainless Steel - Steel - Zinc Spring
Out of Stock | Backorder Now | Orders can be expected around Wed, Jul 22, 2026
$14.95 AUD
$14.95 AUD
Each
View the product page first if you are unsure.
OD (D0)
12.70
mm
Overall Length (L0)
44.5
mm
Wire Diameter (d)
1.40
mm
Max. Extension (L1)
76.450
mm
Spring Rate
1.576
N/mm
Initial Tension (IT)
5.3
N
1102981 | ES-1270-0445-14-M (Each) --- Extension Springs - 12.7x44.5x1.4 mm Music Wire - Steel Spring
Material: Steel    Load at L1: 58.270 N    End Type: Closed - Full Loop   
Part Number: ES-1270-0445-14-M (Each) Extension Springs - 12.7x44.5x1.4 mm Music Wire - Steel Spring
1 Available Now | Further orders can be expected around Wed, Aug 26, 2026
$8.32 AUD
$17.17 AUD $8.32 AUD
Each
OD (D0)
12.70
mm
Overall Length (L0)
44.5
mm
Wire Diameter (d)
1.40
mm
Max. Extension (L1)
76.450
mm
1102981 | ES-1270-0445-14-M (Each) --- Extension Springs - 12.7x44.5x1.4 mm Music Wire - Steel Spring
Material: Steel    Spring Rate: 1.576 N/mm    Initial Tension (IT): 5.3 N    Load at L1: 58.270 N    End Type: Closed - Full Loop   
Part Number: ES-1270-0445-14-M (Each) Extension Springs - 12.7x44.5x1.4 mm Music Wire - Steel Spring
1 Available Now | Further orders can be expected around Wed, Aug 26, 2026
$8.32 AUD
$17.17 AUD $8.32 AUD
Each
View the product page first if you are unsure.
OD (D0)
12.70
mm
Overall Length (L0)
44.5
mm
Wire Diameter (d)
1.60
mm
Max. Extension (L1)
67.560
mm
Spring Rate
3.270
N/mm
Initial Tension (IT)
7.6
N
Extension Springs - 12.7x44.5x1.6 mm - Steel
Material: Steel    Load at L1: 83.630 N    End Type: Closed - Full Loop   
Part Number: ES-1270-0445-16-M (Each) Extension Springs - 12.7x44.5x1.6 mm Music Wire - Steel Spring
1 Available Now | Further orders can be expected around Wed, Aug 26, 2026
$7.23 AUD
$17.96 AUD $7.23 AUD
Each
OD (D0)
12.70
mm
Overall Length (L0)
44.5
mm
Wire Diameter (d)
1.60
mm
Max. Extension (L1)
67.560
mm
Extension Springs - 12.7x44.5x1.6 mm - Steel
Material: Steel    Spring Rate: 3.270 N/mm    Initial Tension (IT): 7.6 N    Load at L1: 83.630 N    End Type: Closed - Full Loop   
Part Number: ES-1270-0445-16-M (Each) Extension Springs - 12.7x44.5x1.6 mm Music Wire - Steel Spring
1 Available Now | Further orders can be expected around Wed, Aug 26, 2026
$7.23 AUD
$17.96 AUD $7.23 AUD
Each
View the product page first if you are unsure.
OD (D0)
12.70
mm
Overall Length (L0)
119.0
mm
Wire Diameter (d)
1.58
mm
Spring Rate
0.72
N/mm
Extension Springs - 12.7x119x1.58 mm - Hard Drawn - Zinc
Material: Hard Drawn - Zinc   
Part Number: ES-1270-1190-16-M (Each) Extension Springs - 12.7x119x1.58 mm Stainless Steel - Hard Drawn - Zinc Spring
1 Available Now | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity
$7.00 AUD
$13.30 AUD $7.00 AUD
Each
OD (D0)
12.70
mm
Overall Length (L0)
119.0
mm
Wire Diameter (d)
1.58
mm
Extension Springs - 12.7x119x1.58 mm - Hard Drawn - Zinc
Material: Hard Drawn - Zinc    Spring Rate: 0.72 N/mm   
Part Number: ES-1270-1190-16-M (Each) Extension Springs - 12.7x119x1.58 mm Stainless Steel - Hard Drawn - Zinc Spring
1 Available Now | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity
$7.00 AUD
$13.30 AUD $7.00 AUD
Each
OD (D0)
12.70
mm
Overall Length (L0)
279.4
mm
Wire Diameter (d)
1.19
mm
Spring Rate
0.06
N/mm
Initial Tension (IT)
0.1
N
Extension Springs - 12.7x279.4x1.19 mm - Steel
Material: Steel   
Part Number: ES-1270-2794-12-M (Each) Extension Springs - 12.7x279.4x1.19 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Wed, Jul 22, 2026
$31.86 AUD
$31.86 AUD
Each
OD (D0)
12.70
mm
Overall Length (L0)
279.4
mm
Wire Diameter (d)
1.19
mm
Extension Springs - 12.7x279.4x1.19 mm - Steel
Material: Steel    Spring Rate: 0.06 N/mm    Initial Tension (IT): 0.1 N   
Part Number: ES-1270-2794-12-M (Each) Extension Springs - 12.7x279.4x1.19 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Wed, Jul 22, 2026
$31.86 AUD
$31.86 AUD
Each
View the product page first if you are unsure.
OD (D0)
16.51
mm
Overall Length (L0)
57.2
mm
Wire Diameter (d)
1.60
mm
Max. Extension (L1)
109.730
mm
Spring Rate
1.121
N/mm
Initial Tension (IT)
6.2
N
Extension Springs - 16.51x57.2x1.6 mm - Steel
Material: Steel    Load at L1: 65.830 N    End Type: Closed - Full Loop   
Part Number: ES-1651-0572-16-M (Each) Extension Springs - 16.51x57.2x1.6 mm Music Wire - Steel Spring
2 Available Now | Further orders can be expected around Wed, Aug 26, 2026
$8.32 AUD
$20.77 AUD $8.32 AUD
Each
OD (D0)
16.51
mm
Overall Length (L0)
57.2
mm
Wire Diameter (d)
1.60
mm
Max. Extension (L1)
109.730
mm
Extension Springs - 16.51x57.2x1.6 mm - Steel
Material: Steel    Spring Rate: 1.121 N/mm    Initial Tension (IT): 6.2 N    Load at L1: 65.830 N    End Type: Closed - Full Loop   
Part Number: ES-1651-0572-16-M (Each) Extension Springs - 16.51x57.2x1.6 mm Music Wire - Steel Spring
2 Available Now | Further orders can be expected around Wed, Aug 26, 2026
$8.32 AUD
$20.77 AUD $8.32 AUD
Each
View the product page first if you are unsure.
OD (D0)
25.40
mm
Overall Length (L0)
177.8
mm
Wire Diameter (d)
3.43
mm
Extension Springs - 25.4x177.8x3.43 mm - Zinc Plated Steel
Material: Zinc Plated Steel    Load at L1: 310.93 N   
Part Number: ES-2540-1778-34-M (Each) Extension Springs - 25.4x177.8x3.43 mm Stainless Steel - Zinc Plated Steel Spring
1 Available Now | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity
$6.00 AUD
$11.40 AUD $6.00 AUD
Each
OD (D0)
25.40
mm
Overall Length (L0)
177.8
mm
Wire Diameter (d)
3.43
mm
Extension Springs - 25.4x177.8x3.43 mm - Zinc Plated Steel
Material: Zinc Plated Steel    Load at L1: 310.93 N   
Part Number: ES-2540-1778-34-M (Each) Extension Springs - 25.4x177.8x3.43 mm Stainless Steel - Zinc Plated Steel Spring
1 Available Now | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity
$6.00 AUD
$11.40 AUD $6.00 AUD
Each