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)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
38.1
mm

(Equiv. 1.5 in.)
Wire Diameter (d)
0.71
mm

(Equiv. 0.028 in.)
Max. Extension (L1)
56.900
mm
Spring Rate
1.243
N/mm
Initial Tension (IT)
2.3
N
Extension Springs - 4.57x38.1x0.71 mm - Steel
Material: Steel    Load at L1: 25.890 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0381-07-M
Extension Springs - 4.57x38.1x0.71 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $5.95 AUD
Regular price $11.30 AUD Sale price $5.95 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0) Overall Length (L0) Wire Diameter (d) Max. Extension (L1) Indicative
Image
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
38.1
mm

(Equiv. 1.5 in.)
Wire Diameter (d)
0.71
mm

(Equiv. 0.028 in.)
Max. Extension (L1)
56.900
mm
Extension Springs - 4.57x38.1x0.71 mm - Steel
Material: Steel    Spring Rate: 1.243 N/mm    Initial Tension (IT): 2.3 N    Load at L1: 25.890 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0381-07-M
Extension Springs - 4.57x38.1x0.71 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $5.95 AUD
Regular price $11.30 AUD Sale price $5.95 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
38.1
mm

(Equiv. 1.5 in.)
Wire Diameter (d)
0.79
mm

(Equiv. 0.031 in.)
Max. Extension (L1)
53.090
mm
Spring Rate
1.839
N/mm
Initial Tension (IT)
2.7
N
Extension Springs - 4.57x38.1x0.79 mm - Steel
Material: Steel    Load at L1: 30.250 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0381-08-M
Extension Springs - 4.57x38.1x0.79 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $6.05 AUD
Regular price $11.48 AUD Sale price $6.05 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
38.1
mm

(Equiv. 1.5 in.)
Wire Diameter (d)
0.79
mm

(Equiv. 0.031 in.)
Max. Extension (L1)
53.090
mm
Extension Springs - 4.57x38.1x0.79 mm - Steel
Material: Steel    Spring Rate: 1.839 N/mm    Initial Tension (IT): 2.7 N    Load at L1: 30.250 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0381-08-M
Extension Springs - 4.57x38.1x0.79 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $6.05 AUD
Regular price $11.48 AUD Sale price $6.05 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
38.1
mm

(Equiv. 1.5 in.)
Wire Diameter (d)
0.89
mm

(Equiv. 0.035 in.)
Max. Extension (L1)
50.040
mm
Spring Rate
3.010
N/mm
Initial Tension (IT)
3.6
N
Extension Springs - 4.57x38.1x0.89 mm - Steel
Material: Steel    Load at L1: 39.900 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0381-09-M
Extension Springs - 4.57x38.1x0.89 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $6.41 AUD
Regular price $12.13 AUD Sale price $6.41 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
38.1
mm

(Equiv. 1.5 in.)
Wire Diameter (d)
0.89
mm

(Equiv. 0.035 in.)
Max. Extension (L1)
50.040
mm
Extension Springs - 4.57x38.1x0.89 mm - Steel
Material: Steel    Spring Rate: 3.010 N/mm    Initial Tension (IT): 3.6 N    Load at L1: 39.900 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0381-09-M
Extension Springs - 4.57x38.1x0.89 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $6.41 AUD
Regular price $12.13 AUD Sale price $6.41 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
44.5
mm

(Equiv. 1.752 in.)
Wire Diameter (d)
0.51
mm

(Equiv. 0.02 in.)
Max. Extension (L1)
105.160
mm
Spring Rate
0.140
N/mm
Initial Tension (IT)
0.8
N
Extension Springs - 4.57x44.5x0.51 mm - Steel
Material: Steel    Load at L1: 9.250 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0445-05-M
Extension Springs - 4.57x44.5x0.51 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 $10.26 AUD Sale price $5.41 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
44.5
mm

(Equiv. 1.752 in.)
Wire Diameter (d)
0.51
mm

(Equiv. 0.02 in.)
Max. Extension (L1)
105.160
mm
Extension Springs - 4.57x44.5x0.51 mm - Steel
Material: Steel    Spring Rate: 0.140 N/mm    Initial Tension (IT): 0.8 N    Load at L1: 9.250 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0445-05-M
Extension Springs - 4.57x44.5x0.51 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 $10.26 AUD Sale price $5.41 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
44.5
mm

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

(Equiv. 0.022 in.)
Max. Extension (L1)
90.170
mm
Spring Rate
0.228
N/mm
Initial Tension (IT)
0.9
N
Extension Springs - 4.57x44.5x0.56 mm - Steel
Material: Steel    Load at L1: 11.570 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0445-06-M
Extension Springs - 4.57x44.5x0.56 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)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
44.5
mm

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

(Equiv. 0.022 in.)
Max. Extension (L1)
90.170
mm
Extension Springs - 4.57x44.5x0.56 mm - Steel
Material: Steel    Spring Rate: 0.228 N/mm    Initial Tension (IT): 0.9 N    Load at L1: 11.570 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0445-06-M
Extension Springs - 4.57x44.5x0.56 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)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
44.5
mm

(Equiv. 1.752 in.)
Wire Diameter (d)
0.79
mm

(Equiv. 0.031 in.)
Max. Extension (L1)
62.480
mm
Spring Rate
1.524
N/mm
Initial Tension (IT)
2.7
N
Extension Springs - 4.57x44.5x0.79 mm - Steel
Material: Steel    Load at L1: 30.250 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0445-08-M
Extension Springs - 4.57x44.5x0.79 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $6.23 AUD
Regular price $11.74 AUD Sale price $6.23 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
44.5
mm

(Equiv. 1.752 in.)
Wire Diameter (d)
0.79
mm

(Equiv. 0.031 in.)
Max. Extension (L1)
62.480
mm
Extension Springs - 4.57x44.5x0.79 mm - Steel
Material: Steel    Spring Rate: 1.524 N/mm    Initial Tension (IT): 2.7 N    Load at L1: 30.250 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0445-08-M
Extension Springs - 4.57x44.5x0.79 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $6.23 AUD
Regular price $11.74 AUD Sale price $6.23 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
44.5
mm

(Equiv. 1.752 in.)
Wire Diameter (d)
0.71
mm

(Equiv. 0.028 in.)
Max. Extension (L1)
67.310
mm
Spring Rate
1.033
N/mm
Initial Tension (IT)
2.3
N
Extension Springs - 4.57x44.5x0.71 mm - Steel
Material: Steel    Load at L1: 25.890 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0445-07-M
Extension Springs - 4.57x44.5x0.71 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $6.05 AUD
Regular price $11.48 AUD Sale price $6.05 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
44.5
mm

(Equiv. 1.752 in.)
Wire Diameter (d)
0.71
mm

(Equiv. 0.028 in.)
Max. Extension (L1)
67.310
mm
Extension Springs - 4.57x44.5x0.71 mm - Steel
Material: Steel    Spring Rate: 1.033 N/mm    Initial Tension (IT): 2.3 N    Load at L1: 25.890 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0445-07-M
Extension Springs - 4.57x44.5x0.71 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $6.05 AUD
Regular price $11.48 AUD Sale price $6.05 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
44.5
mm

(Equiv. 1.752 in.)
Wire Diameter (d)
0.89
mm

(Equiv. 0.035 in.)
Max. Extension (L1)
58.930
mm
Spring Rate
2.500
N/mm
Initial Tension (IT)
3.6
N
Extension Springs - 4.57x44.5x0.89 mm - Steel
Material: Steel    Load at L1: 39.900 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0445-09-M
Extension Springs - 4.57x44.5x0.89 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $6.41 AUD
Regular price $12.17 AUD Sale price $6.41 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
44.5
mm

(Equiv. 1.752 in.)
Wire Diameter (d)
0.89
mm

(Equiv. 0.035 in.)
Max. Extension (L1)
58.930
mm
Extension Springs - 4.57x44.5x0.89 mm - Steel
Material: Steel    Spring Rate: 2.500 N/mm    Initial Tension (IT): 3.6 N    Load at L1: 39.900 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0445-09-M
Extension Springs - 4.57x44.5x0.89 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $6.41 AUD
Regular price $12.17 AUD Sale price $6.41 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
50.8
mm

(Equiv. 2 in.)
Wire Diameter (d)
0.51
mm

(Equiv. 0.02 in.)
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
Extension Springs - 4.57x50.8x0.51 mm Music Wire - Steel Spring
2 Available Now | Further orders can be expected around Thu, Oct 23, 2025
Regular price $4.23 AUD
Regular price $10.26 AUD Sale price $4.23 AUD
Each
Quantity Required

2 Available Now. Backorder if more than 2.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
50.8
mm

(Equiv. 2 in.)
Wire Diameter (d)
0.51
mm

(Equiv. 0.02 in.)
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
Extension Springs - 4.57x50.8x0.51 mm Music Wire - Steel Spring
2 Available Now | Further orders can be expected around Thu, Oct 23, 2025
Regular price $4.23 AUD
Regular price $10.26 AUD Sale price $4.23 AUD
Each
Quantity Required

2 Available Now. Backorder if more than 2.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
50.8
mm

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

(Equiv. 0.022 in.)
Max. Extension (L1)
103.380
mm
Spring Rate
0.210
N/mm
Initial Tension (IT)
0.9
N
Extension Springs - 4.57x50.8x0.56 mm - Steel
Material: Steel    Load at L1: 11.570 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0508-06-M
Extension Springs - 4.57x50.8x0.56 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)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
50.8
mm

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

(Equiv. 0.022 in.)
Max. Extension (L1)
103.380
mm
Extension Springs - 4.57x50.8x0.56 mm - Steel
Material: Steel    Spring Rate: 0.210 N/mm    Initial Tension (IT): 0.9 N    Load at L1: 11.570 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0508-06-M
Extension Springs - 4.57x50.8x0.56 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)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
50.8
mm

(Equiv. 2 in.)
Wire Diameter (d)
0.71
mm

(Equiv. 0.028 in.)
Max. Extension (L1)
77.470
mm
Spring Rate
0.876
N/mm
Initial Tension (IT)
2.3
N
Extension Springs - 4.57x50.8x0.71 mm - Steel
Material: Steel    Load at L1: 25.890 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0508-07-M
Extension Springs - 4.57x50.8x0.71 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $6.23 AUD
Regular price $11.70 AUD Sale price $6.23 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
50.8
mm

(Equiv. 2 in.)
Wire Diameter (d)
0.71
mm

(Equiv. 0.028 in.)
Max. Extension (L1)
77.470
mm
Extension Springs - 4.57x50.8x0.71 mm - Steel
Material: Steel    Spring Rate: 0.876 N/mm    Initial Tension (IT): 2.3 N    Load at L1: 25.890 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0508-07-M
Extension Springs - 4.57x50.8x0.71 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $6.23 AUD
Regular price $11.70 AUD Sale price $6.23 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
50.8
mm

(Equiv. 2 in.)
Wire Diameter (d)
0.79
mm

(Equiv. 0.031 in.)
Max. Extension (L1)
71.880
mm
Spring Rate
1.313
N/mm
Initial Tension (IT)
2.7
N
Extension Springs - 4.57x50.8x0.79 mm - Steel
Material: Steel    Load at L1: 30.250 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0508-08-M
Extension Springs - 4.57x50.8x0.79 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $6.32 AUD
Regular price $11.92 AUD Sale price $6.32 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
50.8
mm

(Equiv. 2 in.)
Wire Diameter (d)
0.79
mm

(Equiv. 0.031 in.)
Max. Extension (L1)
71.880
mm
Extension Springs - 4.57x50.8x0.79 mm - Steel
Material: Steel    Spring Rate: 1.313 N/mm    Initial Tension (IT): 2.7 N    Load at L1: 30.250 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0508-08-M
Extension Springs - 4.57x50.8x0.79 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $6.32 AUD
Regular price $11.92 AUD Sale price $6.32 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
50.8
mm

(Equiv. 2 in.)
Wire Diameter (d)
0.89
mm

(Equiv. 0.035 in.)
Max. Extension (L1)
67.820
mm
Spring Rate
2.140
N/mm
Initial Tension (IT)
3.6
N
Extension Springs - 4.57x50.8x0.89 mm - Steel
Material: Steel    Load at L1: 39.900 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0508-09-M
Extension Springs - 4.57x50.8x0.89 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $6.59 AUD
Regular price $12.38 AUD Sale price $6.59 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
50.8
mm

(Equiv. 2 in.)
Wire Diameter (d)
0.89
mm

(Equiv. 0.035 in.)
Max. Extension (L1)
67.820
mm
Extension Springs - 4.57x50.8x0.89 mm - Steel
Material: Steel    Spring Rate: 2.140 N/mm    Initial Tension (IT): 3.6 N    Load at L1: 39.900 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0508-09-M
Extension Springs - 4.57x50.8x0.89 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $6.59 AUD
Regular price $12.38 AUD Sale price $6.59 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
57.2
mm

(Equiv. 2.252 in.)
Wire Diameter (d)
0.51
mm

(Equiv. 0.02 in.)
Max. Extension (L1)
139.190
mm
Spring Rate
0.105
N/mm
Initial Tension (IT)
0.8
N
Extension Springs - 4.57x57.2x0.51 mm - Steel
Material: Steel    Load at L1: 9.250 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0572-05-M
Extension Springs - 4.57x57.2x0.51 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $5.59 AUD
Regular price $10.48 AUD Sale price $5.59 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
57.2
mm

(Equiv. 2.252 in.)
Wire Diameter (d)
0.51
mm

(Equiv. 0.02 in.)
Max. Extension (L1)
139.190
mm
Extension Springs - 4.57x57.2x0.51 mm - Steel
Material: Steel    Spring Rate: 0.105 N/mm    Initial Tension (IT): 0.8 N    Load at L1: 9.250 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0572-05-M
Extension Springs - 4.57x57.2x0.51 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $5.59 AUD
Regular price $10.48 AUD Sale price $5.59 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
57.2
mm

(Equiv. 2.252 in.)
Wire Diameter (d)
0.71
mm

(Equiv. 0.028 in.)
Max. Extension (L1)
87.880
mm
Spring Rate
0.701
N/mm
Initial Tension (IT)
2.3
N
Extension Springs - 4.57x57.2x0.71 mm - Steel
Material: Steel    Load at L1: 25.890 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0572-07-M
Extension Springs - 4.57x57.2x0.71 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $6.32 AUD
Regular price $11.92 AUD Sale price $6.32 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
57.2
mm

(Equiv. 2.252 in.)
Wire Diameter (d)
0.71
mm

(Equiv. 0.028 in.)
Max. Extension (L1)
87.880
mm
Extension Springs - 4.57x57.2x0.71 mm - Steel
Material: Steel    Spring Rate: 0.701 N/mm    Initial Tension (IT): 2.3 N    Load at L1: 25.890 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0572-07-M
Extension Springs - 4.57x57.2x0.71 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $6.32 AUD
Regular price $11.92 AUD Sale price $6.32 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
57.2
mm

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

(Equiv. 0.022 in.)
Max. Extension (L1)
121.410
mm
Spring Rate
0.175
N/mm
Initial Tension (IT)
0.9
N
Extension Springs - 4.57x57.2x0.56 mm - Steel
Material: Steel    Load at L1: 11.570 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0572-06-M
Extension Springs - 4.57x57.2x0.56 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)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
57.2
mm

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

(Equiv. 0.022 in.)
Max. Extension (L1)
121.410
mm
Extension Springs - 4.57x57.2x0.56 mm - Steel
Material: Steel    Spring Rate: 0.175 N/mm    Initial Tension (IT): 0.9 N    Load at L1: 11.570 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0572-06-M
Extension Springs - 4.57x57.2x0.56 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)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
57.2
mm

(Equiv. 2.252 in.)
Wire Diameter (d)
0.89
mm

(Equiv. 0.035 in.)
Max. Extension (L1)
76.710
mm
Spring Rate
1.874
N/mm
Initial Tension (IT)
3.6
N
Extension Springs - 4.57x57.2x0.89 mm - Steel
Material: Steel    Load at L1: 39.900 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0572-09-M
Extension Springs - 4.57x57.2x0.89 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $6.68 AUD
Regular price $12.60 AUD Sale price $6.68 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
57.2
mm

(Equiv. 2.252 in.)
Wire Diameter (d)
0.89
mm

(Equiv. 0.035 in.)
Max. Extension (L1)
76.710
mm
Extension Springs - 4.57x57.2x0.89 mm - Steel
Material: Steel    Spring Rate: 1.874 N/mm    Initial Tension (IT): 3.6 N    Load at L1: 39.900 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0572-09-M
Extension Springs - 4.57x57.2x0.89 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $6.68 AUD
Regular price $12.60 AUD Sale price $6.68 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
57.2
mm

(Equiv. 2.252 in.)
Wire Diameter (d)
0.79
mm

(Equiv. 0.031 in.)
Max. Extension (L1)
81.280
mm
Spring Rate
1.138
N/mm
Initial Tension (IT)
2.7
N
Extension Springs - 4.57x57.2x0.79 mm - Steel
Material: Steel    Load at L1: 30.250 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0572-08-M
Extension Springs - 4.57x57.2x0.79 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $6.41 AUD
Regular price $12.17 AUD Sale price $6.41 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
57.2
mm

(Equiv. 2.252 in.)
Wire Diameter (d)
0.79
mm

(Equiv. 0.031 in.)
Max. Extension (L1)
81.280
mm
Extension Springs - 4.57x57.2x0.79 mm - Steel
Material: Steel    Spring Rate: 1.138 N/mm    Initial Tension (IT): 2.7 N    Load at L1: 30.250 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0572-08-M
Extension Springs - 4.57x57.2x0.79 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $6.41 AUD
Regular price $12.17 AUD Sale price $6.41 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
63.5
mm

(Equiv. 2.5 in.)
Wire Diameter (d)
0.51
mm

(Equiv. 0.02 in.)
Max. Extension (L1)
156.460
mm
Spring Rate
0.088
N/mm
Initial Tension (IT)
0.8
N
Extension Springs - 4.57x63.5x0.51 mm - Steel
Material: Steel    Load at L1: 9.250 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0635-05-M
Extension Springs - 4.57x63.5x0.51 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)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
63.5
mm

(Equiv. 2.5 in.)
Wire Diameter (d)
0.51
mm

(Equiv. 0.02 in.)
Max. Extension (L1)
156.460
mm
Extension Springs - 4.57x63.5x0.51 mm - Steel
Material: Steel    Spring Rate: 0.088 N/mm    Initial Tension (IT): 0.8 N    Load at L1: 9.250 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0635-05-M
Extension Springs - 4.57x63.5x0.51 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)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
63.5
mm

(Equiv. 2.5 in.)
Wire Diameter (d)
0.71
mm

(Equiv. 0.028 in.)
Max. Extension (L1)
98.040
mm
Spring Rate
0.683
N/mm
Initial Tension (IT)
2.3
N
Extension Springs - 4.57x63.5x0.71 mm - Steel
Material: Steel    Load at L1: 25.890 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0635-07-M
Extension Springs - 4.57x63.5x0.71 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $6.41 AUD
Regular price $12.13 AUD Sale price $6.41 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
63.5
mm

(Equiv. 2.5 in.)
Wire Diameter (d)
0.71
mm

(Equiv. 0.028 in.)
Max. Extension (L1)
98.040
mm
Extension Springs - 4.57x63.5x0.71 mm - Steel
Material: Steel    Spring Rate: 0.683 N/mm    Initial Tension (IT): 2.3 N    Load at L1: 25.890 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0635-07-M
Extension Springs - 4.57x63.5x0.71 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $6.41 AUD
Regular price $12.13 AUD Sale price $6.41 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
63.5
mm

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

(Equiv. 0.022 in.)
Max. Extension (L1)
136.140
mm
Spring Rate
0.158
N/mm
Initial Tension (IT)
0.9
N
Extension Springs - 4.57x63.5x0.56 mm - Steel
Material: Steel    Load at L1: 11.570 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0635-06-M
Extension Springs - 4.57x63.5x0.56 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 $11.12 AUD Sale price $5.86 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
63.5
mm

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

(Equiv. 0.022 in.)
Max. Extension (L1)
136.140
mm
Extension Springs - 4.57x63.5x0.56 mm - Steel
Material: Steel    Spring Rate: 0.158 N/mm    Initial Tension (IT): 0.9 N    Load at L1: 11.570 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0635-06-M
Extension Springs - 4.57x63.5x0.56 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 $11.12 AUD Sale price $5.86 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
63.5
mm

(Equiv. 2.5 in.)
Wire Diameter (d)
0.79
mm

(Equiv. 0.031 in.)
Max. Extension (L1)
92.200
mm
Spring Rate
0.981
N/mm
Initial Tension (IT)
2.7
N
Extension Springs - 4.57x63.5x0.79 mm - Steel
Material: Steel    Load at L1: 30.250 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0635-08-M
Extension Springs - 4.57x63.5x0.79 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $6.59 AUD
Regular price $12.38 AUD Sale price $6.59 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
63.5
mm

(Equiv. 2.5 in.)
Wire Diameter (d)
0.79
mm

(Equiv. 0.031 in.)
Max. Extension (L1)
92.200
mm
Extension Springs - 4.57x63.5x0.79 mm - Steel
Material: Steel    Spring Rate: 0.981 N/mm    Initial Tension (IT): 2.7 N    Load at L1: 30.250 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0635-08-M
Extension Springs - 4.57x63.5x0.79 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $6.59 AUD
Regular price $12.38 AUD Sale price $6.59 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
63.5
mm

(Equiv. 2.5 in.)
Wire Diameter (d)
0.89
mm

(Equiv. 0.035 in.)
Max. Extension (L1)
85.340
mm
Spring Rate
1.664
N/mm
Initial Tension (IT)
3.6
N
Extension Springs - 4.57x63.5x0.89 mm - Steel
Material: Steel    Load at L1: 39.900 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0635-09-M
Extension Springs - 4.57x63.5x0.89 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $6.77 AUD
Regular price $12.85 AUD Sale price $6.77 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
63.5
mm

(Equiv. 2.5 in.)
Wire Diameter (d)
0.89
mm

(Equiv. 0.035 in.)
Max. Extension (L1)
85.340
mm
Extension Springs - 4.57x63.5x0.89 mm - Steel
Material: Steel    Spring Rate: 1.664 N/mm    Initial Tension (IT): 3.6 N    Load at L1: 39.900 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0635-09-M
Extension Springs - 4.57x63.5x0.89 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $6.77 AUD
Regular price $12.85 AUD Sale price $6.77 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
69.9
mm

(Equiv. 2.752 in.)
Wire Diameter (d)
0.89
mm

(Equiv. 0.035 in.)
Max. Extension (L1)
94.230
mm
Spring Rate
1.489
N/mm
Initial Tension (IT)
3.6
N
Extension Springs - 4.57x69.9x0.89 mm - Steel
Material: Steel    Load at L1: 39.900 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0699-09-M
Extension Springs - 4.57x69.9x0.89 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $7.05 AUD
Regular price $13.32 AUD Sale price $7.05 AUD
Each
Quantity Required

Backorder: Out of Stock.
OD (D0)
4.57
mm

(Equiv. 0.18 in.)
Overall Length (L0)
69.9
mm

(Equiv. 2.752 in.)
Wire Diameter (d)
0.89
mm

(Equiv. 0.035 in.)
Max. Extension (L1)
94.230
mm
Extension Springs - 4.57x69.9x0.89 mm - Steel
Material: Steel    Spring Rate: 1.489 N/mm    Initial Tension (IT): 3.6 N    Load at L1: 39.900 N   
Category: Springs - Extension - Music Wire
Part Number: ES-0457-0699-09-M
Extension Springs - 4.57x69.9x0.89 mm Music Wire - Steel Spring
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025
Regular price $7.05 AUD
Regular price $13.32 AUD Sale price $7.05 AUD
Each
Quantity Required

Backorder: Out of Stock.