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)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
114.3
mm

(Equiv. 4.5 in.)
Wire Diameter (d)
3.15
mm

(Equiv. 0.124 in.)
Max. Extension (L1)
218.190
mm
Spring Rate
1.821
N/mm
Initial Tension (IT)
18.7
N
Extension Springs - 38.1x114.3x3.15 mm - Steel
Material: Steel    Load at L1: 207.470 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1143-31-M
Extension Springs - 38.1x114.3x3.15 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $40.86 AUD
Regular price $84.35 AUD Sale price $40.86 AUD
Each
Quantity Required

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OD (D0) Overall Length (L0) Wire Diameter (d) Max. Extension (L1) Indicative
Image
OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
114.3
mm

(Equiv. 4.5 in.)
Wire Diameter (d)
3.15
mm

(Equiv. 0.124 in.)
Max. Extension (L1)
218.190
mm
Extension Springs - 38.1x114.3x3.15 mm - Steel
Material: Steel    Spring Rate: 1.821 N/mm    Initial Tension (IT): 18.7 N    Load at L1: 207.470 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1143-31-M
Extension Springs - 38.1x114.3x3.15 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $40.86 AUD
Regular price $84.35 AUD Sale price $40.86 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
114.3
mm

(Equiv. 4.5 in.)
Wire Diameter (d)
4.50
mm

(Equiv. 0.177 in.)
Max. Extension (L1)
161.290
mm
Spring Rate
10.490
N/mm
Initial Tension (IT)
48.8
N
Extension Springs - 38.1x114.3x4.5 mm - Steel
Material: Steel    Load at L1: 542.240 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1143-45-M
Extension Springs - 38.1x114.3x4.5 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $70.32 AUD
Regular price $146.74 AUD Sale price $70.32 AUD
Each
Quantity Required

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OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
114.3
mm

(Equiv. 4.5 in.)
Wire Diameter (d)
4.50
mm

(Equiv. 0.177 in.)
Max. Extension (L1)
161.290
mm
Extension Springs - 38.1x114.3x4.5 mm - Steel
Material: Steel    Spring Rate: 10.490 N/mm    Initial Tension (IT): 48.8 N    Load at L1: 542.240 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1143-45-M
Extension Springs - 38.1x114.3x4.5 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $70.32 AUD
Regular price $146.74 AUD Sale price $70.32 AUD
Each
Quantity Required

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OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
127.0
mm

(Equiv. 5 in.)
Wire Diameter (d)
3.15
mm

(Equiv. 0.124 in.)
Max. Extension (L1)
262.640
mm
Spring Rate
1.384
N/mm
Initial Tension (IT)
18.7
N
Extension Springs - 38.1x127x3.15 mm - Steel
Material: Steel    Load at L1: 207.470 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1270-31-M
Extension Springs - 38.1x127x3.15 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $43.68 AUD
Regular price $90.29 AUD Sale price $43.68 AUD
Each
Quantity Required

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OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
127.0
mm

(Equiv. 5 in.)
Wire Diameter (d)
3.15
mm

(Equiv. 0.124 in.)
Max. Extension (L1)
262.640
mm
Extension Springs - 38.1x127x3.15 mm - Steel
Material: Steel    Spring Rate: 1.384 N/mm    Initial Tension (IT): 18.7 N    Load at L1: 207.470 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1270-31-M
Extension Springs - 38.1x127x3.15 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $43.68 AUD
Regular price $90.29 AUD Sale price $43.68 AUD
Each
Quantity Required

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OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
127.0
mm

(Equiv. 5 in.)
Wire Diameter (d)
4.50
mm

(Equiv. 0.177 in.)
Max. Extension (L1)
187.200
mm
Spring Rate
8.210
N/mm
Initial Tension (IT)
48.8
N
Extension Springs - 38.1x127x4.5 mm - Steel
Material: Steel    Load at L1: 542.240 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1270-45-M
Extension Springs - 38.1x127x4.5 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $75.95 AUD
Regular price $158.62 AUD Sale price $75.95 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
127.0
mm

(Equiv. 5 in.)
Wire Diameter (d)
4.50
mm

(Equiv. 0.177 in.)
Max. Extension (L1)
187.200
mm
Extension Springs - 38.1x127x4.5 mm - Steel
Material: Steel    Spring Rate: 8.210 N/mm    Initial Tension (IT): 48.8 N    Load at L1: 542.240 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1270-45-M
Extension Springs - 38.1x127x4.5 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $75.95 AUD
Regular price $158.62 AUD Sale price $75.95 AUD
Each
Quantity Required

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OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
127.0
mm

(Equiv. 5 in.)
Wire Diameter (d)
4.01
mm

(Equiv. 0.158 in.)
Max. Extension (L1)
218.950
mm
Spring Rate
4.642
N/mm
Initial Tension (IT)
29.8
N
Extension Springs - 38.1x127x4.01 mm - Steel
Material: Steel    Load at L1: 456.700 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1270-40-M
Extension Springs - 38.1x127x4.01 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $65.05 AUD
Regular price $135.50 AUD Sale price $65.05 AUD
Each
Quantity Required

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OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
127.0
mm

(Equiv. 5 in.)
Wire Diameter (d)
4.01
mm

(Equiv. 0.158 in.)
Max. Extension (L1)
218.950
mm
Extension Springs - 38.1x127x4.01 mm - Steel
Material: Steel    Spring Rate: 4.642 N/mm    Initial Tension (IT): 29.8 N    Load at L1: 456.700 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1270-40-M
Extension Springs - 38.1x127x4.01 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $65.05 AUD
Regular price $135.50 AUD Sale price $65.05 AUD
Each
Quantity Required

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OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
139.7
mm

(Equiv. 5.5 in.)
Wire Diameter (d)
4.01
mm

(Equiv. 0.158 in.)
Max. Extension (L1)
252.480
mm
Spring Rate
3.784
N/mm
Initial Tension (IT)
29.8
N
Extension Springs - 38.1x139.7x4.01 mm - Steel
Material: Steel    Load at L1: 456.700 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1397-40-M
Extension Springs - 38.1x139.7x4.01 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $69.32 AUD
Regular price $144.65 AUD Sale price $69.32 AUD
Each
Quantity Required

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OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
139.7
mm

(Equiv. 5.5 in.)
Wire Diameter (d)
4.01
mm

(Equiv. 0.158 in.)
Max. Extension (L1)
252.480
mm
Extension Springs - 38.1x139.7x4.01 mm - Steel
Material: Steel    Spring Rate: 3.784 N/mm    Initial Tension (IT): 29.8 N    Load at L1: 456.700 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1397-40-M
Extension Springs - 38.1x139.7x4.01 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $69.32 AUD
Regular price $144.65 AUD Sale price $69.32 AUD
Each
Quantity Required

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OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
139.7
mm

(Equiv. 5.5 in.)
Wire Diameter (d)
3.15
mm

(Equiv. 0.124 in.)
Max. Extension (L1)
307.340
mm
Spring Rate
1.121
N/mm
Initial Tension (IT)
18.7
N
Extension Springs - 38.1x139.7x3.15 mm - Steel
Material: Steel    Load at L1: 207.470 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1397-31-M
Extension Springs - 38.1x139.7x3.15 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $46.95 AUD
Regular price $97.20 AUD Sale price $46.95 AUD
Each
Quantity Required

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OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
139.7
mm

(Equiv. 5.5 in.)
Wire Diameter (d)
3.15
mm

(Equiv. 0.124 in.)
Max. Extension (L1)
307.340
mm
Extension Springs - 38.1x139.7x3.15 mm - Steel
Material: Steel    Spring Rate: 1.121 N/mm    Initial Tension (IT): 18.7 N    Load at L1: 207.470 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1397-31-M
Extension Springs - 38.1x139.7x3.15 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $46.95 AUD
Regular price $97.20 AUD Sale price $46.95 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
139.7
mm

(Equiv. 5.5 in.)
Wire Diameter (d)
4.50
mm

(Equiv. 0.177 in.)
Max. Extension (L1)
212.850
mm
Spring Rate
6.740
N/mm
Initial Tension (IT)
48.8
N
Extension Springs - 38.1x139.7x4.5 mm - Steel
Material: Steel    Load at L1: 542.240 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1397-45-M
Extension Springs - 38.1x139.7x4.5 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $81.86 AUD
Regular price $171.11 AUD Sale price $81.86 AUD
Each
Quantity Required

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OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
139.7
mm

(Equiv. 5.5 in.)
Wire Diameter (d)
4.50
mm

(Equiv. 0.177 in.)
Max. Extension (L1)
212.850
mm
Extension Springs - 38.1x139.7x4.5 mm - Steel
Material: Steel    Spring Rate: 6.740 N/mm    Initial Tension (IT): 48.8 N    Load at L1: 542.240 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1397-45-M
Extension Springs - 38.1x139.7x4.5 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $81.86 AUD
Regular price $171.11 AUD Sale price $81.86 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
152.4
mm

(Equiv. 6 in.)
Wire Diameter (d)
3.15
mm

(Equiv. 0.124 in.)
Max. Extension (L1)
352.040
mm
Spring Rate
0.946
N/mm
Initial Tension (IT)
18.7
N
Extension Springs - 38.1x152.4x3.15 mm - Steel
Material: Steel    Load at L1: 207.470 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1524-31-M
Extension Springs - 38.1x152.4x3.15 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $50.59 AUD
Regular price $104.90 AUD Sale price $50.59 AUD
Each
Quantity Required

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OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
152.4
mm

(Equiv. 6 in.)
Wire Diameter (d)
3.15
mm

(Equiv. 0.124 in.)
Max. Extension (L1)
352.040
mm
Extension Springs - 38.1x152.4x3.15 mm - Steel
Material: Steel    Spring Rate: 0.946 N/mm    Initial Tension (IT): 18.7 N    Load at L1: 207.470 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1524-31-M
Extension Springs - 38.1x152.4x3.15 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $50.59 AUD
Regular price $104.90 AUD Sale price $50.59 AUD
Each
Quantity Required

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OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
152.4
mm

(Equiv. 6 in.)
Wire Diameter (d)
4.01
mm

(Equiv. 0.158 in.)
Max. Extension (L1)
286.000
mm
Spring Rate
3.188
N/mm
Initial Tension (IT)
29.8
N
Extension Springs - 38.1x152.4x4.01 mm - Steel
Material: Steel    Load at L1: 456.700 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1524-40-M
Extension Springs - 38.1x152.4x4.01 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $73.95 AUD
Regular price $154.40 AUD Sale price $73.95 AUD
Each
Quantity Required

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OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
152.4
mm

(Equiv. 6 in.)
Wire Diameter (d)
4.01
mm

(Equiv. 0.158 in.)
Max. Extension (L1)
286.000
mm
Extension Springs - 38.1x152.4x4.01 mm - Steel
Material: Steel    Spring Rate: 3.188 N/mm    Initial Tension (IT): 29.8 N    Load at L1: 456.700 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1524-40-M
Extension Springs - 38.1x152.4x4.01 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $73.95 AUD
Regular price $154.40 AUD Sale price $73.95 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
152.4
mm

(Equiv. 6 in.)
Wire Diameter (d)
4.50
mm

(Equiv. 0.177 in.)
Max. Extension (L1)
238.760
mm
Spring Rate
5.730
N/mm
Initial Tension (IT)
48.8
N
Extension Springs - 38.1x152.4x4.5 mm - Steel
Material: Steel    Load at L1: 542.240 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1524-45-M
Extension Springs - 38.1x152.4x4.5 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $87.23 AUD
Regular price $182.59 AUD Sale price $87.23 AUD
Each
Quantity Required

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OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
152.4
mm

(Equiv. 6 in.)
Wire Diameter (d)
4.50
mm

(Equiv. 0.177 in.)
Max. Extension (L1)
238.760
mm
Extension Springs - 38.1x152.4x4.5 mm - Steel
Material: Steel    Spring Rate: 5.730 N/mm    Initial Tension (IT): 48.8 N    Load at L1: 542.240 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1524-45-M
Extension Springs - 38.1x152.4x4.5 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $87.23 AUD
Regular price $182.59 AUD Sale price $87.23 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
165.1
mm

(Equiv. 6.5 in.)
Wire Diameter (d)
4.01
mm

(Equiv. 0.158 in.)
Max. Extension (L1)
319.530
mm
Spring Rate
2.768
N/mm
Initial Tension (IT)
29.8
N
Extension Springs - 38.1x165.1x4.01 mm - Steel
Material: Steel    Load at L1: 456.700 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1651-40-M
Extension Springs - 38.1x165.1x4.01 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $78.68 AUD
Regular price $164.56 AUD Sale price $78.68 AUD
Each
Quantity Required

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OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
165.1
mm

(Equiv. 6.5 in.)
Wire Diameter (d)
4.01
mm

(Equiv. 0.158 in.)
Max. Extension (L1)
319.530
mm
Extension Springs - 38.1x165.1x4.01 mm - Steel
Material: Steel    Spring Rate: 2.768 N/mm    Initial Tension (IT): 29.8 N    Load at L1: 456.700 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1651-40-M
Extension Springs - 38.1x165.1x4.01 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $78.68 AUD
Regular price $164.56 AUD Sale price $78.68 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
165.1
mm

(Equiv. 6.5 in.)
Wire Diameter (d)
3.15
mm

(Equiv. 0.124 in.)
Max. Extension (L1)
396.750
mm
Spring Rate
0.823
N/mm
Initial Tension (IT)
18.7
N
Extension Springs - 38.1x165.1x3.15 mm - Steel
Material: Steel    Load at L1: 207.470 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1651-31-M
Extension Springs - 38.1x165.1x3.15 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $53.77 AUD
Regular price $111.67 AUD Sale price $53.77 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
165.1
mm

(Equiv. 6.5 in.)
Wire Diameter (d)
3.15
mm

(Equiv. 0.124 in.)
Max. Extension (L1)
396.750
mm
Extension Springs - 38.1x165.1x3.15 mm - Steel
Material: Steel    Spring Rate: 0.823 N/mm    Initial Tension (IT): 18.7 N    Load at L1: 207.470 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1651-31-M
Extension Springs - 38.1x165.1x3.15 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $53.77 AUD
Regular price $111.67 AUD Sale price $53.77 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
165.1
mm

(Equiv. 6.5 in.)
Wire Diameter (d)
4.50
mm

(Equiv. 0.177 in.)
Max. Extension (L1)
264.410
mm
Spring Rate
4.970
N/mm
Initial Tension (IT)
48.8
N
Extension Springs - 38.1x165.1x4.5 mm - Steel
Material: Steel    Load at L1: 542.240 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1651-45-M
Extension Springs - 38.1x165.1x4.5 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $92.86 AUD
Regular price $194.47 AUD Sale price $92.86 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
165.1
mm

(Equiv. 6.5 in.)
Wire Diameter (d)
4.50
mm

(Equiv. 0.177 in.)
Max. Extension (L1)
264.410
mm
Extension Springs - 38.1x165.1x4.5 mm - Steel
Material: Steel    Spring Rate: 4.970 N/mm    Initial Tension (IT): 48.8 N    Load at L1: 542.240 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1651-45-M
Extension Springs - 38.1x165.1x4.5 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $92.86 AUD
Regular price $194.47 AUD Sale price $92.86 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
177.8
mm

(Equiv. 7 in.)
Wire Diameter (d)
3.15
mm

(Equiv. 0.124 in.)
Max. Extension (L1)
441.200
mm
Spring Rate
0.718
N/mm
Initial Tension (IT)
18.7
N
Extension Springs - 38.1x177.8x3.15 mm - Steel
Material: Steel    Load at L1: 207.470 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1778-31-M
Extension Springs - 38.1x177.8x3.15 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $57.50 AUD
Regular price $119.63 AUD Sale price $57.50 AUD
Each
Quantity Required

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OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
177.8
mm

(Equiv. 7 in.)
Wire Diameter (d)
3.15
mm

(Equiv. 0.124 in.)
Max. Extension (L1)
441.200
mm
Extension Springs - 38.1x177.8x3.15 mm - Steel
Material: Steel    Spring Rate: 0.718 N/mm    Initial Tension (IT): 18.7 N    Load at L1: 207.470 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1778-31-M
Extension Springs - 38.1x177.8x3.15 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $57.50 AUD
Regular price $119.63 AUD Sale price $57.50 AUD
Each
Quantity Required

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OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
177.8
mm

(Equiv. 7 in.)
Wire Diameter (d)
4.01
mm

(Equiv. 0.158 in.)
Max. Extension (L1)
353.160
mm
Spring Rate
2.417
N/mm
Initial Tension (IT)
29.8
N
Extension Springs - 38.1x177.8x4.01 mm - Steel
Material: Steel    Load at L1: 456.700 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1778-40-M
Extension Springs - 38.1x177.8x4.01 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $83.32 AUD
Regular price $174.31 AUD Sale price $83.32 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
177.8
mm

(Equiv. 7 in.)
Wire Diameter (d)
4.01
mm

(Equiv. 0.158 in.)
Max. Extension (L1)
353.160
mm
Extension Springs - 38.1x177.8x4.01 mm - Steel
Material: Steel    Spring Rate: 2.417 N/mm    Initial Tension (IT): 29.8 N    Load at L1: 456.700 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1778-40-M
Extension Springs - 38.1x177.8x4.01 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $83.32 AUD
Regular price $174.31 AUD Sale price $83.32 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
177.8
mm

(Equiv. 7 in.)
Wire Diameter (d)
4.50
mm

(Equiv. 0.177 in.)
Max. Extension (L1)
290.070
mm
Spring Rate
4.400
N/mm
Initial Tension (IT)
48.8
N
Extension Springs - 38.1x177.8x4.5 mm - Steel
Material: Steel    Load at L1: 542.240 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1778-45-M
Extension Springs - 38.1x177.8x4.5 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $98.59 AUD
Regular price $206.57 AUD Sale price $98.59 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
177.8
mm

(Equiv. 7 in.)
Wire Diameter (d)
4.50
mm

(Equiv. 0.177 in.)
Max. Extension (L1)
290.070
mm
Extension Springs - 38.1x177.8x4.5 mm - Steel
Material: Steel    Spring Rate: 4.400 N/mm    Initial Tension (IT): 48.8 N    Load at L1: 542.240 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1778-45-M
Extension Springs - 38.1x177.8x4.5 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $98.59 AUD
Regular price $206.57 AUD Sale price $98.59 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
190.5
mm

(Equiv. 7.5 in.)
Wire Diameter (d)
4.01
mm

(Equiv. 0.158 in.)
Max. Extension (L1)
386.590
mm
Spring Rate
2.172
N/mm
Initial Tension (IT)
29.8
N
Extension Springs - 38.1x190.5x4.01 mm - Steel
Material: Steel    Load at L1: 456.700 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1905-40-M
Extension Springs - 38.1x190.5x4.01 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $88.50 AUD
Regular price $185.26 AUD Sale price $88.50 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
190.5
mm

(Equiv. 7.5 in.)
Wire Diameter (d)
4.01
mm

(Equiv. 0.158 in.)
Max. Extension (L1)
386.590
mm
Extension Springs - 38.1x190.5x4.01 mm - Steel
Material: Steel    Spring Rate: 2.172 N/mm    Initial Tension (IT): 29.8 N    Load at L1: 456.700 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1905-40-M
Extension Springs - 38.1x190.5x4.01 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $88.50 AUD
Regular price $185.26 AUD Sale price $88.50 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
190.5
mm

(Equiv. 7.5 in.)
Wire Diameter (d)
3.15
mm

(Equiv. 0.124 in.)
Max. Extension (L1)
485.700
mm
Spring Rate
0.631
N/mm
Initial Tension (IT)
18.7
N
Extension Springs - 38.1x190.5x3.15 mm - Steel
Material: Steel    Load at L1: 207.470 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1905-31-M
Extension Springs - 38.1x190.5x3.15 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $61.05 AUD
Regular price $127.19 AUD Sale price $61.05 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
190.5
mm

(Equiv. 7.5 in.)
Wire Diameter (d)
3.15
mm

(Equiv. 0.124 in.)
Max. Extension (L1)
485.700
mm
Extension Springs - 38.1x190.5x3.15 mm - Steel
Material: Steel    Spring Rate: 0.631 N/mm    Initial Tension (IT): 18.7 N    Load at L1: 207.470 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1905-31-M
Extension Springs - 38.1x190.5x3.15 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $61.05 AUD
Regular price $127.19 AUD Sale price $61.05 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
190.5
mm

(Equiv. 7.5 in.)
Wire Diameter (d)
4.50
mm

(Equiv. 0.177 in.)
Max. Extension (L1)
315.980
mm
Spring Rate
3.940
N/mm
Initial Tension (IT)
48.8
N
Extension Springs - 38.1x190.5x4.5 mm - Steel
Material: Steel    Load at L1: 542.240 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1905-45-M
Extension Springs - 38.1x190.5x4.5 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $105.23 AUD
Regular price $220.61 AUD Sale price $105.23 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
190.5
mm

(Equiv. 7.5 in.)
Wire Diameter (d)
4.50
mm

(Equiv. 0.177 in.)
Max. Extension (L1)
315.980
mm
Extension Springs - 38.1x190.5x4.5 mm - Steel
Material: Steel    Spring Rate: 3.940 N/mm    Initial Tension (IT): 48.8 N    Load at L1: 542.240 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-1905-45-M
Extension Springs - 38.1x190.5x4.5 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $105.23 AUD
Regular price $220.61 AUD Sale price $105.23 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
203.2
mm

(Equiv. 8 in.)
Wire Diameter (d)
3.15
mm

(Equiv. 0.124 in.)
Max. Extension (L1)
530.610
mm
Spring Rate
0.578
N/mm
Initial Tension (IT)
18.7
N
Extension Springs - 38.1x203.2x3.15 mm - Steel
Material: Steel    Load at L1: 207.470 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-2032-31-M
Extension Springs - 38.1x203.2x3.15 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $66.14 AUD
Regular price $137.92 AUD Sale price $66.14 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
203.2
mm

(Equiv. 8 in.)
Wire Diameter (d)
3.15
mm

(Equiv. 0.124 in.)
Max. Extension (L1)
530.610
mm
Extension Springs - 38.1x203.2x3.15 mm - Steel
Material: Steel    Spring Rate: 0.578 N/mm    Initial Tension (IT): 18.7 N    Load at L1: 207.470 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-2032-31-M
Extension Springs - 38.1x203.2x3.15 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $66.14 AUD
Regular price $137.92 AUD Sale price $66.14 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
203.2
mm

(Equiv. 8 in.)
Wire Diameter (d)
4.01
mm

(Equiv. 0.158 in.)
Max. Extension (L1)
420.120
mm
Spring Rate
1.962
N/mm
Initial Tension (IT)
29.8
N
Extension Springs - 38.1x203.2x4.01 mm - Steel
Material: Steel    Load at L1: 456.700 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-2032-40-M
Extension Springs - 38.1x203.2x4.01 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $93.59 AUD
Regular price $196.02 AUD Sale price $93.59 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
203.2
mm

(Equiv. 8 in.)
Wire Diameter (d)
4.01
mm

(Equiv. 0.158 in.)
Max. Extension (L1)
420.120
mm
Extension Springs - 38.1x203.2x4.01 mm - Steel
Material: Steel    Spring Rate: 1.962 N/mm    Initial Tension (IT): 29.8 N    Load at L1: 456.700 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-2032-40-M
Extension Springs - 38.1x203.2x4.01 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $93.59 AUD
Regular price $196.02 AUD Sale price $93.59 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
203.2
mm

(Equiv. 8 in.)
Wire Diameter (d)
4.50
mm

(Equiv. 0.177 in.)
Max. Extension (L1)
341.630
mm
Spring Rate
3.560
N/mm
Initial Tension (IT)
48.8
N
Extension Springs - 38.1x203.2x4.5 mm - Steel
Material: Steel    Load at L1: 542.240 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-2032-45-M
Extension Springs - 38.1x203.2x4.5 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $111.14 AUD
Regular price $233.14 AUD Sale price $111.14 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
203.2
mm

(Equiv. 8 in.)
Wire Diameter (d)
4.50
mm

(Equiv. 0.177 in.)
Max. Extension (L1)
341.630
mm
Extension Springs - 38.1x203.2x4.5 mm - Steel
Material: Steel    Spring Rate: 3.560 N/mm    Initial Tension (IT): 48.8 N    Load at L1: 542.240 N   
Category: Springs - Extension - Music Wire
Part Number: ES-3810-2032-45-M
Extension Springs - 38.1x203.2x4.5 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $111.14 AUD
Regular price $233.14 AUD Sale price $111.14 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
371.0
mm

(Equiv. 14.606 in.)
Wire Diameter (d)
5.00
mm

(Equiv. 0.197 in.)
Initial Tension (IT)
2.9
N
Extension Springs - 38.1x371x5 mm - Music Wire
Material: Music Wire   
Category: Springs - Extension - Stainless Steel
Part Number: ES-3810-3710-50-M
Extension Springs - 38.1x371x5 mm Stainless Steel - Music Wire Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $179.59 AUD
Regular price $215.51 AUD Sale price $179.59 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
38.10
mm

(Equiv. 1.5 in.)
Overall Length (L0)
371.0
mm

(Equiv. 14.606 in.)
Wire Diameter (d)
5.00
mm

(Equiv. 0.197 in.)
Extension Springs - 38.1x371x5 mm - Music Wire
Material: Music Wire    Initial Tension (IT): 2.9 N   
Category: Springs - Extension - Stainless Steel
Part Number: ES-3810-3710-50-M
Extension Springs - 38.1x371x5 mm Stainless Steel - Music Wire Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $179.59 AUD
Regular price $215.51 AUD Sale price $179.59 AUD
Each
Quantity Required

Backorder: Out of Stock.