Collection: Springs - Extension

Springs -> Extension
OD (D0) Overall Length (L0) Wire Diameter (d) Max. Extension (L1) Spring Rate Initial Tension (IT) Indicative
Image
OD (D0)
3.05
mm

(Equiv. 0.12 in.)
Overall Length (L0)
38.1
mm

(Equiv. 1.5 in.)
Wire Diameter (d)
0.36
mm

(Equiv. 0.014 in.)
Max. Extension (L1)
89.150
mm
Spring Rate
0.088
N/mm
Initial Tension (IT)
0.4
N
Extension Springs - 3.05x38.1x0.36 mm - Steel
Material: Steel    Load at L1: 4.980 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0305-0381-04-M
Extension Springs - 3.05x38.1x0.36 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $5.05 AUD
Regular price $9.58 AUD Sale price $5.05 AUD
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OD (D0) Overall Length (L0) Wire Diameter (d) Max. Extension (L1) Indicative
Image
OD (D0)
3.05
mm

(Equiv. 0.12 in.)
Overall Length (L0)
38.1
mm

(Equiv. 1.5 in.)
Wire Diameter (d)
0.36
mm

(Equiv. 0.014 in.)
Max. Extension (L1)
89.150
mm
Extension Springs - 3.05x38.1x0.36 mm - Steel
Material: Steel    Spring Rate: 0.088 N/mm    Initial Tension (IT): 0.4 N    Load at L1: 4.980 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0305-0381-04-M
Extension Springs - 3.05x38.1x0.36 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $5.05 AUD
Regular price $9.58 AUD Sale price $5.05 AUD
Each
Quantity Required

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OD (D0)
3.05
mm

(Equiv. 0.12 in.)
Overall Length (L0)
38.1
mm

(Equiv. 1.5 in.)
Wire Diameter (d)
0.46
mm

(Equiv. 0.018 in.)
Max. Extension (L1)
62.740
mm
Spring Rate
0.350
N/mm
Initial Tension (IT)
0.9
N
Extension Springs - 3.05x38.1x0.46 mm - Steel
Material: Steel    Load at L1: 9.790 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0305-0381-05-M
Extension Springs - 3.05x38.1x0.46 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $5.23 AUD
Regular price $9.83 AUD Sale price $5.23 AUD
Each
Quantity Required

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OD (D0)
3.05
mm

(Equiv. 0.12 in.)
Overall Length (L0)
38.1
mm

(Equiv. 1.5 in.)
Wire Diameter (d)
0.46
mm

(Equiv. 0.018 in.)
Max. Extension (L1)
62.740
mm
Extension Springs - 3.05x38.1x0.46 mm - Steel
Material: Steel    Spring Rate: 0.350 N/mm    Initial Tension (IT): 0.9 N    Load at L1: 9.790 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0305-0381-05-M
Extension Springs - 3.05x38.1x0.46 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $5.23 AUD
Regular price $9.83 AUD Sale price $5.23 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.05
mm

(Equiv. 0.12 in.)
Overall Length (L0)
38.1
mm

(Equiv. 1.5 in.)
Wire Diameter (d)
0.56
mm

(Equiv. 0.022 in.)
Max. Extension (L1)
53.090
mm
Spring Rate
1.051
N/mm
Initial Tension (IT)
1.6
N
Extension Springs - 3.05x38.1x0.56 mm - Steel
Material: Steel    Load at L1: 17.300 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0305-0381-06-M
Extension Springs - 3.05x38.1x0.56 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $5.32 AUD
Regular price $10.04 AUD Sale price $5.32 AUD
Each
Quantity Required

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OD (D0)
3.05
mm

(Equiv. 0.12 in.)
Overall Length (L0)
38.1
mm

(Equiv. 1.5 in.)
Wire Diameter (d)
0.56
mm

(Equiv. 0.022 in.)
Max. Extension (L1)
53.090
mm
Extension Springs - 3.05x38.1x0.56 mm - Steel
Material: Steel    Spring Rate: 1.051 N/mm    Initial Tension (IT): 1.6 N    Load at L1: 17.300 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0305-0381-06-M
Extension Springs - 3.05x38.1x0.56 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $5.32 AUD
Regular price $10.04 AUD Sale price $5.32 AUD
Each
Quantity Required

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OD (D0)
3.05
mm

(Equiv. 0.12 in.)
Overall Length (L0)
44.5
mm

(Equiv. 1.752 in.)
Wire Diameter (d)
0.46
mm

(Equiv. 0.018 in.)
Max. Extension (L1)
73.660
mm
Spring Rate
0.298
N/mm
Initial Tension (IT)
0.9
N
Extension Springs - 3.05x44.5x0.46 mm - Steel
Material: Steel    Load at L1: 9.790 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0305-0445-05-M
Extension Springs - 3.05x44.5x0.46 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $5.32 AUD
Regular price $10.04 AUD Sale price $5.32 AUD
Each
Quantity Required

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OD (D0)
3.05
mm

(Equiv. 0.12 in.)
Overall Length (L0)
44.5
mm

(Equiv. 1.752 in.)
Wire Diameter (d)
0.46
mm

(Equiv. 0.018 in.)
Max. Extension (L1)
73.660
mm
Extension Springs - 3.05x44.5x0.46 mm - Steel
Material: Steel    Spring Rate: 0.298 N/mm    Initial Tension (IT): 0.9 N    Load at L1: 9.790 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0305-0445-05-M
Extension Springs - 3.05x44.5x0.46 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $5.32 AUD
Regular price $10.04 AUD Sale price $5.32 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.05
mm

(Equiv. 0.12 in.)
Overall Length (L0)
44.5
mm

(Equiv. 1.752 in.)
Wire Diameter (d)
0.56
mm

(Equiv. 0.022 in.)
Max. Extension (L1)
62.230
mm
Spring Rate
0.876
N/mm
Initial Tension (IT)
1.6
N
Extension Springs - 3.05x44.5x0.56 mm - Steel
Material: Steel    Load at L1: 17.300 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0305-0445-06-M
Extension Springs - 3.05x44.5x0.56 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $5.41 AUD
Regular price $10.22 AUD Sale price $5.41 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.05
mm

(Equiv. 0.12 in.)
Overall Length (L0)
44.5
mm

(Equiv. 1.752 in.)
Wire Diameter (d)
0.56
mm

(Equiv. 0.022 in.)
Max. Extension (L1)
62.230
mm
Extension Springs - 3.05x44.5x0.56 mm - Steel
Material: Steel    Spring Rate: 0.876 N/mm    Initial Tension (IT): 1.6 N    Load at L1: 17.300 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0305-0445-06-M
Extension Springs - 3.05x44.5x0.56 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $5.41 AUD
Regular price $10.22 AUD Sale price $5.41 AUD
Each
Quantity Required

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OD (D0)
3.05
mm

(Equiv. 0.12 in.)
Overall Length (L0)
50.8
mm

(Equiv. 2 in.)
Wire Diameter (d)
0.46
mm

(Equiv. 0.018 in.)
Max. Extension (L1)
84.840
mm
Spring Rate
2.450
N/mm
Initial Tension (IT)
0.9
N
Extension Springs - 3.05x50.8x0.46 mm - Steel
Material: Steel    Load at L1: 9.790 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0305-0508-05-M
Extension Springs - 3.05x50.8x0.46 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $5.41 AUD
Regular price $10.22 AUD Sale price $5.41 AUD
Each
Quantity Required

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OD (D0)
3.05
mm

(Equiv. 0.12 in.)
Overall Length (L0)
50.8
mm

(Equiv. 2 in.)
Wire Diameter (d)
0.46
mm

(Equiv. 0.018 in.)
Max. Extension (L1)
84.840
mm
Extension Springs - 3.05x50.8x0.46 mm - Steel
Material: Steel    Spring Rate: 2.450 N/mm    Initial Tension (IT): 0.9 N    Load at L1: 9.790 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0305-0508-05-M
Extension Springs - 3.05x50.8x0.46 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $5.41 AUD
Regular price $10.22 AUD Sale price $5.41 AUD
Each
Quantity Required

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OD (D0)
3.05
mm

(Equiv. 0.12 in.)
Overall Length (L0)
50.8
mm

(Equiv. 2 in.)
Wire Diameter (d)
0.56
mm

(Equiv. 0.022 in.)
Max. Extension (L1)
71.630
mm
Spring Rate
0.753
N/mm
Initial Tension (IT)
1.6
N
Extension Springs - 3.05x50.8x0.56 mm - Steel
Material: Steel    Load at L1: 17.300 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0305-0508-06-M
Extension Springs - 3.05x50.8x0.56 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $5.50 AUD
Regular price $10.44 AUD Sale price $5.50 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.05
mm

(Equiv. 0.12 in.)
Overall Length (L0)
50.8
mm

(Equiv. 2 in.)
Wire Diameter (d)
0.56
mm

(Equiv. 0.022 in.)
Max. Extension (L1)
71.630
mm
Extension Springs - 3.05x50.8x0.56 mm - Steel
Material: Steel    Spring Rate: 0.753 N/mm    Initial Tension (IT): 1.6 N    Load at L1: 17.300 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0305-0508-06-M
Extension Springs - 3.05x50.8x0.56 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $5.50 AUD
Regular price $10.44 AUD Sale price $5.50 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.05
mm

(Equiv. 0.12 in.)
Overall Length (L0)
57.2
mm

(Equiv. 2.252 in.)
Wire Diameter (d)
0.46
mm

(Equiv. 0.018 in.)
Max. Extension (L1)
98.810
mm
Spring Rate
0.228
N/mm
Initial Tension (IT)
0.9
N
Extension Springs - 3.05x57.2x0.46 mm - Steel
Material: Steel    Load at L1: 9.790 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0305-0572-05-M
Extension Springs - 3.05x57.2x0.46 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $5.50 AUD
Regular price $10.44 AUD Sale price $5.50 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.05
mm

(Equiv. 0.12 in.)
Overall Length (L0)
57.2
mm

(Equiv. 2.252 in.)
Wire Diameter (d)
0.46
mm

(Equiv. 0.018 in.)
Max. Extension (L1)
98.810
mm
Extension Springs - 3.05x57.2x0.46 mm - Steel
Material: Steel    Spring Rate: 0.228 N/mm    Initial Tension (IT): 0.9 N    Load at L1: 9.790 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0305-0572-05-M
Extension Springs - 3.05x57.2x0.46 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $5.50 AUD
Regular price $10.44 AUD Sale price $5.50 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.05
mm

(Equiv. 0.12 in.)
Overall Length (L0)
57.2
mm

(Equiv. 2.252 in.)
Wire Diameter (d)
0.56
mm

(Equiv. 0.022 in.)
Max. Extension (L1)
80.770
mm
Spring Rate
0.666
N/mm
Initial Tension (IT)
1.6
N
Extension Springs - 3.05x57.2x0.56 mm - Steel
Material: Steel    Load at L1: 17.300 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0305-0572-06-M
Extension Springs - 3.05x57.2x0.56 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $5.77 AUD
Regular price $10.91 AUD Sale price $5.77 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.05
mm

(Equiv. 0.12 in.)
Overall Length (L0)
57.2
mm

(Equiv. 2.252 in.)
Wire Diameter (d)
0.56
mm

(Equiv. 0.022 in.)
Max. Extension (L1)
80.770
mm
Extension Springs - 3.05x57.2x0.56 mm - Steel
Material: Steel    Spring Rate: 0.666 N/mm    Initial Tension (IT): 1.6 N    Load at L1: 17.300 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0305-0572-06-M
Extension Springs - 3.05x57.2x0.56 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $5.77 AUD
Regular price $10.91 AUD Sale price $5.77 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.05
mm

(Equiv. 0.12 in.)
Overall Length (L0)
63.5
mm

(Equiv. 2.5 in.)
Wire Diameter (d)
0.56
mm

(Equiv. 0.022 in.)
Max. Extension (L1)
89.920
mm
Spring Rate
0.595
N/mm
Initial Tension (IT)
1.6
N
Extension Springs - 3.05x63.5x0.56 mm - Steel
Material: Steel    Load at L1: 17.300 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0305-0635-06-M
Extension Springs - 3.05x63.5x0.56 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $5.86 AUD
Regular price $11.09 AUD Sale price $5.86 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.05
mm

(Equiv. 0.12 in.)
Overall Length (L0)
63.5
mm

(Equiv. 2.5 in.)
Wire Diameter (d)
0.56
mm

(Equiv. 0.022 in.)
Max. Extension (L1)
89.920
mm
Extension Springs - 3.05x63.5x0.56 mm - Steel
Material: Steel    Spring Rate: 0.595 N/mm    Initial Tension (IT): 1.6 N    Load at L1: 17.300 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0305-0635-06-M
Extension Springs - 3.05x63.5x0.56 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $5.86 AUD
Regular price $11.09 AUD Sale price $5.86 AUD
Each
Quantity Required

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OD (D0)
3.18
mm

(Equiv. 0.125 in.)
Overall Length (L0)
152.4
mm

(Equiv. 6 in.)
Wire Diameter (d)
0.38
mm

(Equiv. 0.015 in.)
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
Extension Springs - 3.18x152.4x0.38 mm Music Wire - Steel Spring
3 Available Now | Further orders can be expected around Thu, Sep 18, 2025
Regular price $13.77 AUD
Regular price Sale price $13.77 AUD
Each
Quantity Required

3 Available Now. Backorder if more than 3.
OD (D0)
3.18
mm

(Equiv. 0.125 in.)
Overall Length (L0)
152.4
mm

(Equiv. 6 in.)
Wire Diameter (d)
0.38
mm

(Equiv. 0.015 in.)
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
Extension Springs - 3.18x152.4x0.38 mm Music Wire - Steel Spring
3 Available Now | Further orders can be expected around Thu, Sep 18, 2025
Regular price $13.77 AUD
Regular price Sale price $13.77 AUD
Each
Quantity Required

3 Available Now. Backorder if more than 3.
OD (D0)
3.18
mm

(Equiv. 0.125 in.)
Overall Length (L0)
203.2
mm

(Equiv. 8 in.)
Wire Diameter (d)
0.38
mm

(Equiv. 0.015 in.)
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
Extension Springs - 3.18x203.2x0.38 mm Music Wire - Steel Spring
5 Available Now | Further orders can be expected around Thu, Sep 18, 2025
Regular price $12.68 AUD
Regular price Sale price $12.68 AUD
Each
Quantity Required

5 Available Now. Backorder if more than 5.
OD (D0)
3.18
mm

(Equiv. 0.125 in.)
Overall Length (L0)
203.2
mm

(Equiv. 8 in.)
Wire Diameter (d)
0.38
mm

(Equiv. 0.015 in.)
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
Extension Springs - 3.18x203.2x0.38 mm Music Wire - Steel Spring
5 Available Now | Further orders can be expected around Thu, Sep 18, 2025
Regular price $12.68 AUD
Regular price Sale price $12.68 AUD
Each
Quantity Required

5 Available Now. Backorder if more than 5.
OD (D0)
3.18
mm

(Equiv. 0.125 in.)
Overall Length (L0)
279.4
mm

(Equiv. 11 in.)
Wire Diameter (d)
0.41
mm

(Equiv. 0.016 in.)
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
Extension Springs - 3.18x279.4x0.41 mm Music Wire - Steel Spring
8 Available Now | Further orders can be expected around Thu, Sep 18, 2025
Regular price $11.41 AUD
Regular price Sale price $11.41 AUD
Each
Quantity Required

8 Available Now. Backorder if more than 8.
OD (D0)
3.18
mm

(Equiv. 0.125 in.)
Overall Length (L0)
279.4
mm

(Equiv. 11 in.)
Wire Diameter (d)
0.41
mm

(Equiv. 0.016 in.)
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
Extension Springs - 3.18x279.4x0.41 mm Music Wire - Steel Spring
8 Available Now | Further orders can be expected around Thu, Sep 18, 2025
Regular price $11.41 AUD
Regular price Sale price $11.41 AUD
Each
Quantity Required

8 Available Now. Backorder if more than 8.
OD (D0)
3.18
mm

(Equiv. 0.125 in.)
Overall Length (L0)
508.0
mm

(Equiv. 20 in.)
Wire Diameter (d)
0.33
mm

(Equiv. 0.013 in.)
Spring Rate
0.06
N/mm
Initial Tension (IT)
0.1
N
Extension Springs - 3.18x508x0.33 mm - Stainless Steel
Material: Stainless Steel   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0318-5080-03-S2
Extension Springs - 3.18x508x0.33 mm - Stainless Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Sep 18, 2025
Regular price $26.14 AUD
Regular price $31.36 AUD Sale price $26.14 AUD
Each
Quantity Required

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OD (D0)
3.18
mm

(Equiv. 0.125 in.)
Overall Length (L0)
508.0
mm

(Equiv. 20 in.)
Wire Diameter (d)
0.33
mm

(Equiv. 0.013 in.)
Extension Springs - 3.18x508x0.33 mm - Stainless Steel
Material: Stainless Steel    Spring Rate: 0.06 N/mm    Initial Tension (IT): 0.1 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0318-5080-03-S2
Extension Springs - 3.18x508x0.33 mm - Stainless Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Sep 18, 2025
Regular price $26.14 AUD
Regular price $31.36 AUD Sale price $26.14 AUD
Each
Quantity Required

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OD (D0)
3.18
mm

(Equiv. 0.125 in.)
Overall Length (L0)
508.0
mm

(Equiv. 20 in.)
Wire Diameter (d)
0.43
mm

(Equiv. 0.017 in.)
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
Extension Springs - 3.18x508x0.43 mm - Stainless Steel Spring
1 Available Now | Further orders can be expected around Thu, Sep 18, 2025
Regular price $39.05 AUD
Regular price $74.80 AUD Sale price $39.05 AUD
Each
Quantity Required

1 Available Now. Backorder if more than 1.
OD (D0)
3.18
mm

(Equiv. 0.125 in.)
Overall Length (L0)
508.0
mm

(Equiv. 20 in.)
Wire Diameter (d)
0.43
mm

(Equiv. 0.017 in.)
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
Extension Springs - 3.18x508x0.43 mm - Stainless Steel Spring
1 Available Now | Further orders can be expected around Thu, Sep 18, 2025
Regular price $39.05 AUD
Regular price $74.80 AUD Sale price $39.05 AUD
Each
Quantity Required

1 Available Now. Backorder if more than 1.
OD (D0)
3.18
mm

(Equiv. 0.125 in.)
Overall Length (L0)
508.0
mm

(Equiv. 20 in.)
Wire Diameter (d)
0.51
mm

(Equiv. 0.02 in.)
Spring Rate
0.61
N/mm
Initial Tension (IT)
0.6
N
Extension Springs - 3.18x508x0.51 mm - Stainless Steel
Material: Stainless Steel   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0318-5080-05-S2
Extension Springs - 3.18x508x0.51 mm - Stainless Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Sep 18, 2025
Regular price $33.32 AUD
Regular price $39.98 AUD Sale price $33.32 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.18
mm

(Equiv. 0.125 in.)
Overall Length (L0)
508.0
mm

(Equiv. 20 in.)
Wire Diameter (d)
0.51
mm

(Equiv. 0.02 in.)
Extension Springs - 3.18x508x0.51 mm - Stainless Steel
Material: Stainless Steel    Spring Rate: 0.61 N/mm    Initial Tension (IT): 0.6 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0318-5080-05-S2
Extension Springs - 3.18x508x0.51 mm - Stainless Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Sep 18, 2025
Regular price $33.32 AUD
Regular price $39.98 AUD Sale price $33.32 AUD
Each
Quantity Required

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OD (D0)
3.18
mm

(Equiv. 0.125 in.)
Overall Length (L0)
914.0
mm

(Equiv. 35.984 in.)
Wire Diameter (d)
0.31
mm

(Equiv. 0.012 in.)
Spring Rate
0.04
N/mm
Initial Tension (IT)
0.0
N
Extension Springs - 3.18x914x0.31 mm - Steel - None
Material: Steel - None   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0318-9140-03-S2
Extension Springs - 3.18x914x0.31 mm Stainless Steel - Steel - None Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Sep 18, 2025
Regular price $27.50 AUD
Regular price $33.00 AUD Sale price $27.50 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.18
mm

(Equiv. 0.125 in.)
Overall Length (L0)
914.0
mm

(Equiv. 35.984 in.)
Wire Diameter (d)
0.31
mm

(Equiv. 0.012 in.)
Extension Springs - 3.18x914x0.31 mm - Steel - None
Material: Steel - None    Spring Rate: 0.04 N/mm    Initial Tension (IT): 0.0 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0318-9140-03-S2
Extension Springs - 3.18x914x0.31 mm Stainless Steel - Steel - None Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Sep 18, 2025
Regular price $27.50 AUD
Regular price $33.00 AUD Sale price $27.50 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.18
mm

(Equiv. 0.125 in.)
Overall Length (L0)
914.0
mm

(Equiv. 35.984 in.)
Wire Diameter (d)
0.36
mm

(Equiv. 0.014 in.)
Spring Rate
0.10
N/mm
Initial Tension (IT)
0.1
N
Extension Springs - 3.18x914x0.36 mm - Steel - None
Material: Steel - None   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0318-9140-035-S2
Extension Springs - 3.18x914x0.36 mm Stainless Steel - Steel - None Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Sep 18, 2025
Regular price $22.50 AUD
Regular price $27.00 AUD Sale price $22.50 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.18
mm

(Equiv. 0.125 in.)
Overall Length (L0)
914.0
mm

(Equiv. 35.984 in.)
Wire Diameter (d)
0.36
mm

(Equiv. 0.014 in.)
Extension Springs - 3.18x914x0.36 mm - Steel - None
Material: Steel - None    Spring Rate: 0.10 N/mm    Initial Tension (IT): 0.1 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0318-9140-035-S2
Extension Springs - 3.18x914x0.36 mm Stainless Steel - Steel - None Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Sep 18, 2025
Regular price $22.50 AUD
Regular price $27.00 AUD Sale price $22.50 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.18
mm

(Equiv. 0.125 in.)
Overall Length (L0)
914.0
mm

(Equiv. 35.984 in.)
Wire Diameter (d)
0.41
mm

(Equiv. 0.016 in.)
Spring Rate
0.21
N/mm
Initial Tension (IT)
0.2
N
Extension Springs - 3.18x914x0.41 mm - Steel - None
Material: Steel - None   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0318-0914-04-S2
Extension Springs - 3.18x914x0.41 mm Stainless Steel - Steel - None Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Sep 18, 2025
Regular price $23.05 AUD
Regular price $27.65 AUD Sale price $23.05 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.18
mm

(Equiv. 0.125 in.)
Overall Length (L0)
914.0
mm

(Equiv. 35.984 in.)
Wire Diameter (d)
0.41
mm

(Equiv. 0.016 in.)
Extension Springs - 3.18x914x0.41 mm - Steel - None
Material: Steel - None    Spring Rate: 0.21 N/mm    Initial Tension (IT): 0.2 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0318-0914-04-S2
Extension Springs - 3.18x914x0.41 mm Stainless Steel - Steel - None Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Sep 18, 2025
Regular price $23.05 AUD
Regular price $27.65 AUD Sale price $23.05 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.18
mm

(Equiv. 0.125 in.)
Overall Length (L0)
914.0
mm

(Equiv. 35.984 in.)
Wire Diameter (d)
0.58
mm

(Equiv. 0.023 in.)
Spring Rate
1.52
N/mm
Initial Tension (IT)
1.5
N
Extension Springs - 3.18x914x0.58 mm - Steel - None
Material: Steel - None   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0318-9140-06-S2
Extension Springs - 3.18x914x0.58 mm Stainless Steel - Steel - None Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Sep 18, 2025
Regular price $31.14 AUD
Regular price $37.36 AUD Sale price $31.14 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.18
mm

(Equiv. 0.125 in.)
Overall Length (L0)
914.0
mm

(Equiv. 35.984 in.)
Wire Diameter (d)
0.58
mm

(Equiv. 0.023 in.)
Extension Springs - 3.18x914x0.58 mm - Steel - None
Material: Steel - None    Spring Rate: 1.52 N/mm    Initial Tension (IT): 1.5 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0318-9140-06-S2
Extension Springs - 3.18x914x0.58 mm Stainless Steel - Steel - None Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Sep 18, 2025
Regular price $31.14 AUD
Regular price $37.36 AUD Sale price $31.14 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.20
mm

(Equiv. 0.126 in.)
Overall Length (L0)
107.0
mm

(Equiv. 4.213 in.)
Wire Diameter (d)
0.40
mm

(Equiv. 0.016 in.)
Initial Tension (IT)
0.0
N
Extension Springs - 3.2x107x0.4 mm - Steel
Material: Steel   
Category: Springs - Extension - Music Wire
Part Number: ES-0318-1070-04-M
Extension Springs - 3.2x107x0.4 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $5.68 AUD
Regular price $10.66 AUD Sale price $5.68 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.20
mm

(Equiv. 0.126 in.)
Overall Length (L0)
107.0
mm

(Equiv. 4.213 in.)
Wire Diameter (d)
0.40
mm

(Equiv. 0.016 in.)
Extension Springs - 3.2x107x0.4 mm - Steel
Material: Steel    Initial Tension (IT): 0.0 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0318-1070-04-M
Extension Springs - 3.2x107x0.4 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $5.68 AUD
Regular price $10.66 AUD Sale price $5.68 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.50
mm

(Equiv. 0.138 in.)
Overall Length (L0)
11.1
mm

(Equiv. 0.437 in.)
Wire Diameter (d)
0.70
mm

(Equiv. 0.028 in.)
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
Part Number: ES-0350-0111-07-S2
Extension Springs - 3.5x11.1x0.7 mm - Stainless Steel 302/304 Similar to A2, 18-8 Spring
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
Quantity Required

1 Available Now. These are priced to quit. Please contact us for a quote if you require more.
OD (D0)
3.50
mm

(Equiv. 0.138 in.)
Overall Length (L0)
11.1
mm

(Equiv. 0.437 in.)
Wire Diameter (d)
0.70
mm

(Equiv. 0.028 in.)
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
Part Number: ES-0350-0111-07-S2
Extension Springs - 3.5x11.1x0.7 mm - Stainless Steel 302/304 Similar to A2, 18-8 Spring
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
Quantity Required

1 Available Now. These are priced to quit. Please contact us for a quote if you require more.
OD (D0)
3.96
mm

(Equiv. 0.156 in.)
Overall Length (L0)
38.1
mm

(Equiv. 1.5 in.)
Wire Diameter (d)
0.51
mm

(Equiv. 0.02 in.)
Spring Rate
0.25
N/mm
Initial Tension (IT)
0.3
N
Extension Springs - 3.96x38.1x0.51 mm - Steel - Zinc
Material: Steel - Zinc   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0396-0381-05-M
Extension Springs - 3.96x38.1x0.51 mm Stainless Steel - Steel - Zinc Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Sep 18, 2025
Regular price $4.86 AUD
Regular price $5.84 AUD Sale price $4.86 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.96
mm

(Equiv. 0.156 in.)
Overall Length (L0)
38.1
mm

(Equiv. 1.5 in.)
Wire Diameter (d)
0.51
mm

(Equiv. 0.02 in.)
Extension Springs - 3.96x38.1x0.51 mm - Steel - Zinc
Material: Steel - Zinc    Spring Rate: 0.25 N/mm    Initial Tension (IT): 0.3 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-0396-0381-05-M
Extension Springs - 3.96x38.1x0.51 mm Stainless Steel - Steel - Zinc Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Sep 18, 2025
Regular price $4.86 AUD
Regular price $5.84 AUD Sale price $4.86 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.96
mm

(Equiv. 0.156 in.)
Overall Length (L0)
152.4
mm

(Equiv. 6 in.)
Wire Diameter (d)
0.51
mm

(Equiv. 0.02 in.)
Spring Rate
0.06
N/mm
Initial Tension (IT)
0.1
N
Extension Springs - 3.96x152.4x0.51 mm - Steel
Material: Steel   
Category: Springs - Extension - Music Wire
Part Number: ES-0396-1524-05-M
Extension Springs - 3.96x152.4x0.51 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Sep 18, 2025
Regular price $16.14 AUD
Regular price Sale price $16.14 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
3.96
mm

(Equiv. 0.156 in.)
Overall Length (L0)
152.4
mm

(Equiv. 6 in.)
Wire Diameter (d)
0.51
mm

(Equiv. 0.02 in.)
Extension Springs - 3.96x152.4x0.51 mm - Steel
Material: Steel    Spring Rate: 0.06 N/mm    Initial Tension (IT): 0.1 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0396-1524-05-M
Extension Springs - 3.96x152.4x0.51 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Sep 18, 2025
Regular price $16.14 AUD
Regular price Sale price $16.14 AUD
Each
Quantity Required

Backorder: Out of Stock.