| 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)
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 |
|
| Material: Steel Load at L1: 456.700 N End Type: Closed - Full Loop | ||||||
|
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
Unit price
per
Each
|
||||||
| 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)
165.1
mm (Equiv. 6.5 in.) |
Wire Diameter (d)
4.01
mm (Equiv. 0.158 in.) |
Max. Extension (L1)
319.530
mm |
|
||
| Material: Steel Spring Rate: 2.768 N/mm Initial Tension (IT): 29.8 N Load at L1: 456.700 N End Type: Closed - Full Loop | ||||||
|
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
Unit price
per
Each
|
||||||
|
||||||
|
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 |
|
| Material: Steel Load at L1: 207.470 N End Type: Closed - Full Loop | ||||||
|
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
Unit price
per
Each
|
||||||
|
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 |
|
||
| Material: Steel Spring Rate: 0.823 N/mm Initial Tension (IT): 18.7 N Load at L1: 207.470 N End Type: Closed - Full Loop | ||||||
|
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
Unit price
per
Each
|
||||||
|
||||||
|
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 |
|
| Material: Steel Load at L1: 542.240 N End Type: Closed - Full Loop | ||||||
|
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
Unit price
per
Each
|
||||||
|
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 |
|
||
| Material: Steel Spring Rate: 4.970 N/mm Initial Tension (IT): 48.8 N Load at L1: 542.240 N End Type: Closed - Full Loop | ||||||
|
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
Unit price
per
Each
|
||||||
|
||||||
|
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 |
|
| Material: Steel Load at L1: 207.470 N End Type: Closed - Full Loop | ||||||
|
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
Unit price
per
Each
|
||||||
|
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 |
|
||
| Material: Steel Spring Rate: 0.718 N/mm Initial Tension (IT): 18.7 N Load at L1: 207.470 N End Type: Closed - Full Loop | ||||||
|
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
Unit price
per
Each
|
||||||
|
||||||
|
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 |
|
| Material: Steel Load at L1: 456.700 N End Type: Closed - Full Loop | ||||||
|
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
Unit price
per
Each
|
||||||
|
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 |
|
||
| Material: Steel Spring Rate: 2.417 N/mm Initial Tension (IT): 29.8 N Load at L1: 456.700 N End Type: Closed - Full Loop | ||||||
|
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
Unit price
per
Each
|
||||||
|
||||||
|
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 |
|
| Material: Steel Load at L1: 542.240 N End Type: Closed - Full Loop | ||||||
|
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
Unit price
per
Each
|
||||||
|
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 |
|
||
| Material: Steel Spring Rate: 4.400 N/mm Initial Tension (IT): 48.8 N Load at L1: 542.240 N End Type: Closed - Full Loop | ||||||
|
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
Unit price
per
Each
|
||||||
|
||||||
|
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 |
|
| Material: Steel Load at L1: 456.700 N End Type: Closed - Full Loop | ||||||
|
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
Unit price
per
Each
|
||||||
|
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 |
|
||
| Material: Steel Spring Rate: 2.172 N/mm Initial Tension (IT): 29.8 N Load at L1: 456.700 N End Type: Closed - Full Loop | ||||||
|
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
Unit price
per
Each
|
||||||
|
||||||
|
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 |
|
| Material: Steel Load at L1: 207.470 N End Type: Closed - Full Loop | ||||||
|
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
Unit price
per
Each
|
||||||
|
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 |
|
||
| Material: Steel Spring Rate: 0.631 N/mm Initial Tension (IT): 18.7 N Load at L1: 207.470 N End Type: Closed - Full Loop | ||||||
|
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
Unit price
per
Each
|
||||||
|
||||||
|
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 |
|
| Material: Steel Load at L1: 542.240 N End Type: Closed - Full Loop | ||||||
|
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
Unit price
per
Each
|
||||||
|
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 |
|
||
| Material: Steel Spring Rate: 3.940 N/mm Initial Tension (IT): 48.8 N Load at L1: 542.240 N End Type: Closed - Full Loop | ||||||
|
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
Unit price
per
Each
|
||||||
|
||||||
|
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 |
|
| Material: Steel Load at L1: 207.470 N End Type: Closed - Full Loop | ||||||
|
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
Unit price
per
Each
|
||||||
|
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 |
|
||
| Material: Steel Spring Rate: 0.578 N/mm Initial Tension (IT): 18.7 N Load at L1: 207.470 N End Type: Closed - Full Loop | ||||||
|
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
Unit price
per
Each
|
||||||
|
||||||
|
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 |
|
| Material: Steel Load at L1: 456.700 N End Type: Closed - Full Loop | ||||||
|
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
Unit price
per
Each
|
||||||
|
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 |
|
||
| Material: Steel Spring Rate: 1.962 N/mm Initial Tension (IT): 29.8 N Load at L1: 456.700 N End Type: Closed - Full Loop | ||||||
|
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
Unit price
per
Each
|
||||||
|
||||||
|
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 |
|
| Material: Steel Load at L1: 542.240 N End Type: Closed - Full Loop | ||||||
|
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
Unit price
per
Each
|
||||||
|
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 |
|
||
| Material: Steel Spring Rate: 3.560 N/mm Initial Tension (IT): 48.8 N Load at L1: 542.240 N End Type: Closed - Full Loop | ||||||
|
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
Unit price
per
Each
|
||||||
|
||||||
|
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 |
|
||
| Material: Music Wire Body Length: 304.800 mm End Type: Closed - Full Loop | ||||||
|
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
Unit price
per
Each
|
||||||
|
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.) |
|
|||
| Material: Music Wire Initial Tension (IT): 2.9 N Body Length: 304.800 mm End Type: Closed - Full Loop | ||||||
|
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
Unit price
per
Each
|
||||||
|
||||||
|
OD (D0)
44.45
mm (Equiv. 1.75 in.) |
Overall Length (L0)
127.0
mm (Equiv. 5 in.) |
Wire Diameter (d)
4.01
mm (Equiv. 0.158 in.) |
Max. Extension (L1)
226.060
mm |
Spring Rate
3.696
N/mm |
Initial Tension (IT)
25.8
N |
|
| Material: Steel Load at L1: 392.040 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-4445-1270-40-M
Extension Springs - 44.45x127x4.01 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025 Regular price
$71.86 AUD
Regular price
Unit price
per
Each
|
||||||
|
OD (D0)
44.45
mm (Equiv. 1.75 in.) |
Overall Length (L0)
127.0
mm (Equiv. 5 in.) |
Wire Diameter (d)
4.01
mm (Equiv. 0.158 in.) |
Max. Extension (L1)
226.060
mm |
|
||
| Material: Steel Spring Rate: 3.696 N/mm Initial Tension (IT): 25.8 N Load at L1: 392.040 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-4445-1270-40-M
Extension Springs - 44.45x127x4.01 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025 Regular price
$71.86 AUD
Regular price
Unit price
per
Each
|
||||||
|
||||||
|
OD (D0)
44.45
mm (Equiv. 1.75 in.) |
Overall Length (L0)
127.0
mm (Equiv. 5 in.) |
Wire Diameter (d)
4.50
mm (Equiv. 0.177 in.) |
Max. Extension (L1)
193.550
mm |
Spring Rate
6.410
N/mm |
Initial Tension (IT)
42.3
N |
|
| Material: Steel Load at L1: 469.330 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-4445-1270-45-M
Extension Springs - 44.45x127x4.5 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025 Regular price
$85.05 AUD
Regular price
Unit price
per
Each
|
||||||
|
OD (D0)
44.45
mm (Equiv. 1.75 in.) |
Overall Length (L0)
127.0
mm (Equiv. 5 in.) |
Wire Diameter (d)
4.50
mm (Equiv. 0.177 in.) |
Max. Extension (L1)
193.550
mm |
|
||
| Material: Steel Spring Rate: 6.410 N/mm Initial Tension (IT): 42.3 N Load at L1: 469.330 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-4445-1270-45-M
Extension Springs - 44.45x127x4.5 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025 Regular price
$85.05 AUD
Regular price
Unit price
per
Each
|
||||||
|
||||||
|
OD (D0)
44.45
mm (Equiv. 1.75 in.) |
Overall Length (L0)
127.0
mm (Equiv. 5 in.) |
Wire Diameter (d)
5.00
mm (Equiv. 0.197 in.) |
Max. Extension (L1)
173.740
mm |
Spring Rate
10.757
N/mm |
Initial Tension (IT)
64.9
N |
|
| Material: Steel Load at L1: 564.040 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-4445-1270-50-M
Extension Springs - 44.45x127x5 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025 Regular price
$100.23 AUD
Regular price
Unit price
per
Each
|
||||||
|
OD (D0)
44.45
mm (Equiv. 1.75 in.) |
Overall Length (L0)
127.0
mm (Equiv. 5 in.) |
Wire Diameter (d)
5.00
mm (Equiv. 0.197 in.) |
Max. Extension (L1)
173.740
mm |
|
||
| Material: Steel Spring Rate: 10.757 N/mm Initial Tension (IT): 64.9 N Load at L1: 564.040 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-4445-1270-50-M
Extension Springs - 44.45x127x5 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025 Regular price
$100.23 AUD
Regular price
Unit price
per
Each
|
||||||
|
||||||
|
OD (D0)
44.45
mm (Equiv. 1.75 in.) |
Overall Length (L0)
139.7
mm (Equiv. 5.5 in.) |
Wire Diameter (d)
4.01
mm (Equiv. 0.158 in.) |
Max. Extension (L1)
268.730
mm |
Spring Rate
2.838
N/mm |
Initial Tension (IT)
25.8
N |
|
| Material: Steel Load at L1: 392.040 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-4445-1397-40-M
Extension Springs - 44.45x139.7x4.01 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025 Regular price
$77.50 AUD
Regular price
Unit price
per
Each
|
||||||
|
OD (D0)
44.45
mm (Equiv. 1.75 in.) |
Overall Length (L0)
139.7
mm (Equiv. 5.5 in.) |
Wire Diameter (d)
4.01
mm (Equiv. 0.158 in.) |
Max. Extension (L1)
268.730
mm |
|
||
| Material: Steel Spring Rate: 2.838 N/mm Initial Tension (IT): 25.8 N Load at L1: 392.040 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-4445-1397-40-M
Extension Springs - 44.45x139.7x4.01 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025 Regular price
$77.50 AUD
Regular price
Unit price
per
Each
|
||||||
|
||||||
|
OD (D0)
44.45
mm (Equiv. 1.75 in.) |
Overall Length (L0)
139.7
mm (Equiv. 5.5 in.) |
Wire Diameter (d)
4.50
mm (Equiv. 0.177 in.) |
Max. Extension (L1)
225.300
mm |
Spring Rate
4.990
N/mm |
Initial Tension (IT)
42.3
N |
|
| Material: Steel Load at L1: 469.330 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-4445-1397-45-M
Extension Springs - 44.45x139.7x4.5 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025 Regular price
$91.32 AUD
Regular price
Unit price
per
Each
|
||||||
|
OD (D0)
44.45
mm (Equiv. 1.75 in.) |
Overall Length (L0)
139.7
mm (Equiv. 5.5 in.) |
Wire Diameter (d)
4.50
mm (Equiv. 0.177 in.) |
Max. Extension (L1)
225.300
mm |
|
||
| Material: Steel Spring Rate: 4.990 N/mm Initial Tension (IT): 42.3 N Load at L1: 469.330 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-4445-1397-45-M
Extension Springs - 44.45x139.7x4.5 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025 Regular price
$91.32 AUD
Regular price
Unit price
per
Each
|
||||||
|
||||||
|
OD (D0)
44.45
mm (Equiv. 1.75 in.) |
Overall Length (L0)
139.7
mm (Equiv. 5.5 in.) |
Wire Diameter (d)
5.00
mm (Equiv. 0.197 in.) |
Max. Extension (L1)
199.140
mm |
Spring Rate
8.462
N/mm |
Initial Tension (IT)
64.9
N |
|
| Material: Steel Load at L1: 564.040 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-4445-1397-50-M
Extension Springs - 44.45x139.7x5 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025 Regular price
$108.68 AUD
Regular price
Unit price
per
Each
|
||||||
|
OD (D0)
44.45
mm (Equiv. 1.75 in.) |
Overall Length (L0)
139.7
mm (Equiv. 5.5 in.) |
Wire Diameter (d)
5.00
mm (Equiv. 0.197 in.) |
Max. Extension (L1)
199.140
mm |
|
||
| Material: Steel Spring Rate: 8.462 N/mm Initial Tension (IT): 64.9 N Load at L1: 564.040 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-4445-1397-50-M
Extension Springs - 44.45x139.7x5 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025 Regular price
$108.68 AUD
Regular price
Unit price
per
Each
|
||||||
|
||||||
|
OD (D0)
44.45
mm (Equiv. 1.75 in.) |
Overall Length (L0)
152.4
mm (Equiv. 6 in.) |
Wire Diameter (d)
4.01
mm (Equiv. 0.158 in.) |
Max. Extension (L1)
311.400
mm |
Spring Rate
2.312
N/mm |
Initial Tension (IT)
25.8
N |
|
| Material: Steel Load at L1: 392.040 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-4445-1524-40-M
Extension Springs - 44.45x152.4x4.01 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025 Regular price
$82.59 AUD
Regular price
Unit price
per
Each
|
||||||
|
OD (D0)
44.45
mm (Equiv. 1.75 in.) |
Overall Length (L0)
152.4
mm (Equiv. 6 in.) |
Wire Diameter (d)
4.01
mm (Equiv. 0.158 in.) |
Max. Extension (L1)
311.400
mm |
|
||
| Material: Steel Spring Rate: 2.312 N/mm Initial Tension (IT): 25.8 N Load at L1: 392.040 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-4445-1524-40-M
Extension Springs - 44.45x152.4x4.01 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025 Regular price
$82.59 AUD
Regular price
Unit price
per
Each
|
||||||
|
||||||
|
OD (D0)
44.45
mm (Equiv. 1.75 in.) |
Overall Length (L0)
152.4
mm (Equiv. 6 in.) |
Wire Diameter (d)
4.50
mm (Equiv. 0.177 in.) |
Max. Extension (L1)
257.050
mm |
Spring Rate
4.080
N/mm |
Initial Tension (IT)
42.3
N |
|
| Material: Steel Load at L1: 469.330 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-4445-1524-45-M
Extension Springs - 44.45x152.4x4.5 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025 Regular price
$98.68 AUD
Regular price
Unit price
per
Each
|
||||||
|
OD (D0)
44.45
mm (Equiv. 1.75 in.) |
Overall Length (L0)
152.4
mm (Equiv. 6 in.) |
Wire Diameter (d)
4.50
mm (Equiv. 0.177 in.) |
Max. Extension (L1)
257.050
mm |
|
||
| Material: Steel Spring Rate: 4.080 N/mm Initial Tension (IT): 42.3 N Load at L1: 469.330 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-4445-1524-45-M
Extension Springs - 44.45x152.4x4.5 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025 Regular price
$98.68 AUD
Regular price
Unit price
per
Each
|
||||||
|
||||||
|
OD (D0)
44.45
mm (Equiv. 1.75 in.) |
Overall Length (L0)
152.4
mm (Equiv. 6 in.) |
Wire Diameter (d)
5.00
mm (Equiv. 0.197 in.) |
Max. Extension (L1)
224.280
mm |
Spring Rate
6.973
N/mm |
Initial Tension (IT)
64.9
N |
|
| Material: Steel Load at L1: 564.040 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-4445-1524-50-M
Extension Springs - 44.45x152.4x5 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025 Regular price
$117.50 AUD
Regular price
Unit price
per
Each
|
||||||
|
OD (D0)
44.45
mm (Equiv. 1.75 in.) |
Overall Length (L0)
152.4
mm (Equiv. 6 in.) |
Wire Diameter (d)
5.00
mm (Equiv. 0.197 in.) |
Max. Extension (L1)
224.280
mm |
|
||
| Material: Steel Spring Rate: 6.973 N/mm Initial Tension (IT): 64.9 N Load at L1: 564.040 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-4445-1524-50-M
Extension Springs - 44.45x152.4x5 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025 Regular price
$117.50 AUD
Regular price
Unit price
per
Each
|
||||||
|
||||||
|
OD (D0)
44.45
mm (Equiv. 1.75 in.) |
Overall Length (L0)
165.1
mm (Equiv. 6.5 in.) |
Wire Diameter (d)
4.01
mm (Equiv. 0.158 in.) |
Max. Extension (L1)
353.820
mm |
Spring Rate
1.962
N/mm |
Initial Tension (IT)
25.8
N |
|
| Material: Steel Load at L1: 392.040 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-4445-1651-40-M
Extension Springs - 44.45x165.1x4.01 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025 Regular price
$87.86 AUD
Regular price
Unit price
per
Each
|
||||||
|
OD (D0)
44.45
mm (Equiv. 1.75 in.) |
Overall Length (L0)
165.1
mm (Equiv. 6.5 in.) |
Wire Diameter (d)
4.01
mm (Equiv. 0.158 in.) |
Max. Extension (L1)
353.820
mm |
|
||
| Material: Steel Spring Rate: 1.962 N/mm Initial Tension (IT): 25.8 N Load at L1: 392.040 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-4445-1651-40-M
Extension Springs - 44.45x165.1x4.01 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025 Regular price
$87.86 AUD
Regular price
Unit price
per
Each
|
||||||
|
||||||
|
OD (D0)
44.45
mm (Equiv. 1.75 in.) |
Overall Length (L0)
165.1
mm (Equiv. 6.5 in.) |
Wire Diameter (d)
5.00
mm (Equiv. 0.197 in.) |
Max. Extension (L1)
249.680
mm |
Spring Rate
5.939
N/mm |
Initial Tension (IT)
64.9
N |
|
| Material: Steel Load at L1: 564.040 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-4445-1651-50-M
Extension Springs - 44.45x165.1x5 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025 Regular price
$125.23 AUD
Regular price
Unit price
per
Each
|
||||||
|
OD (D0)
44.45
mm (Equiv. 1.75 in.) |
Overall Length (L0)
165.1
mm (Equiv. 6.5 in.) |
Wire Diameter (d)
5.00
mm (Equiv. 0.197 in.) |
Max. Extension (L1)
249.680
mm |
|
||
| Material: Steel Spring Rate: 5.939 N/mm Initial Tension (IT): 64.9 N Load at L1: 564.040 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-4445-1651-50-M
Extension Springs - 44.45x165.1x5 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 23, 2025 Regular price
$125.23 AUD
Regular price
Unit price
per
Each
|
||||||
|
||||||
