| OD (D0) | Overall Length (L0) | Wire Diameter (d) | Max. Extension (L1) | Spring Rate | Initial Tension (IT) |
Indicative Image |
|---|---|---|---|---|---|---|
|
OD (D0)
12.00
mm (Equiv. 0.472 in.) |
Overall Length (L0)
40
mm (Equiv. 1.575 in.) |
Wire Diameter (d)
2.000
mm (Equiv. 0.079 in.) |
Max. Extension (L1)
46.60
mm |
Spring Rate
13.04
N/mm |
Initial Tension (IT)
34.3
N |
|
| Material: Steel Load at L1: 120.62 N End Type: Double Loop | ||||||
|
Part Number: ES-1200-0400-20-M (100 Pcs)
Extension Springs - 12x40x2 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Dec 11, 2025 Regular price
$142.77 AUD
Regular price
Unit price
per
100 Per Sell Unit
Excludes GST and overseas Taxes & Duties |
||||||
| OD (D0) | Overall Length (L0) | Wire Diameter (d) | Max. Extension (L1) |
Indicative Image |
||
|
OD (D0)
12.00
mm (Equiv. 0.472 in.) |
Overall Length (L0)
40
mm (Equiv. 1.575 in.) |
Wire Diameter (d)
2.000
mm (Equiv. 0.079 in.) |
Max. Extension (L1)
46.60
mm |
|
||
| Material: Steel Spring Rate: 13.04 N/mm Initial Tension (IT): 34.3 N Load at L1: 120.62 N End Type: Double Loop | ||||||
|
Part Number: ES-1200-0400-20-M (100 Pcs)
Extension Springs - 12x40x2 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Dec 11, 2025 Regular price
$142.77 AUD
Regular price
Unit price
per
100 Per Sell Unit
Excludes GST and overseas Taxes & Duties |
||||||
|
||||||
|
OD (D0)
12.00
mm (Equiv. 0.472 in.) |
Overall Length (L0)
45
mm (Equiv. 1.772 in.) |
Wire Diameter (d)
2.000
mm (Equiv. 0.079 in.) |
Max. Extension (L1)
52.70
mm |
Spring Rate
11.18
N/mm |
Initial Tension (IT)
34.3
N |
|
| Material: Steel Load at L1: 120.62 N End Type: Double Loop | ||||||
|
Part Number: ES-1200-0450-20-M (100 Pcs)
Extension Springs - 12x45x2 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Dec 11, 2025 Regular price
$151.14 AUD
Regular price
Unit price
per
100 Per Sell Unit
Excludes GST and overseas Taxes & Duties |
||||||
|
OD (D0)
12.00
mm (Equiv. 0.472 in.) |
Overall Length (L0)
45
mm (Equiv. 1.772 in.) |
Wire Diameter (d)
2.000
mm (Equiv. 0.079 in.) |
Max. Extension (L1)
52.70
mm |
|
||
| Material: Steel Spring Rate: 11.18 N/mm Initial Tension (IT): 34.3 N Load at L1: 120.62 N End Type: Double Loop | ||||||
|
Part Number: ES-1200-0450-20-M (100 Pcs)
Extension Springs - 12x45x2 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Dec 11, 2025 Regular price
$151.14 AUD
Regular price
Unit price
per
100 Per Sell Unit
Excludes GST and overseas Taxes & Duties |
||||||
|
||||||
|
OD (D0)
12.00
mm (Equiv. 0.472 in.) |
Overall Length (L0)
50
mm (Equiv. 1.969 in.) |
Wire Diameter (d)
2.000
mm (Equiv. 0.079 in.) |
Max. Extension (L1)
59.40
mm |
Spring Rate
9.22
N/mm |
Initial Tension (IT)
34.3
N |
|
| Material: Steel Load at L1: 120.62 N End Type: Double Loop | ||||||
|
Part Number: ES-1200-0500-20-M (100 Pcs)
Extension Springs - 12x50x2 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Dec 11, 2025 Regular price
$156.77 AUD
Regular price
Unit price
per
100 Per Sell Unit
Excludes GST and overseas Taxes & Duties |
||||||
|
OD (D0)
12.00
mm (Equiv. 0.472 in.) |
Overall Length (L0)
50
mm (Equiv. 1.969 in.) |
Wire Diameter (d)
2.000
mm (Equiv. 0.079 in.) |
Max. Extension (L1)
59.40
mm |
|
||
| Material: Steel Spring Rate: 9.22 N/mm Initial Tension (IT): 34.3 N Load at L1: 120.62 N End Type: Double Loop | ||||||
|
Part Number: ES-1200-0500-20-M (100 Pcs)
Extension Springs - 12x50x2 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Dec 11, 2025 Regular price
$156.77 AUD
Regular price
Unit price
per
100 Per Sell Unit
Excludes GST and overseas Taxes & Duties |
||||||
|
||||||
|
OD (D0)
12.00
mm (Equiv. 0.472 in.) |
Overall Length (L0)
60
mm (Equiv. 2.362 in.) |
Wire Diameter (d)
2.000
mm (Equiv. 0.079 in.) |
Max. Extension (L1)
72.10
mm |
Spring Rate
7.16
N/mm |
Initial Tension (IT)
34.3
N |
|
| Material: Steel Load at L1: 120.62 N End Type: Double Loop | ||||||
|
Part Number: ES-1200-0600-20-M (5 Pcs)
Extension Springs - 12x60x2 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Dec 11, 2025 Regular price
$8.77 AUD
Regular price
Unit price
per
5 Per Sell Unit
Excludes GST and overseas Taxes & Duties |
||||||
|
OD (D0)
12.00
mm (Equiv. 0.472 in.) |
Overall Length (L0)
60
mm (Equiv. 2.362 in.) |
Wire Diameter (d)
2.000
mm (Equiv. 0.079 in.) |
Max. Extension (L1)
72.10
mm |
|
||
| Material: Steel Spring Rate: 7.16 N/mm Initial Tension (IT): 34.3 N Load at L1: 120.62 N End Type: Double Loop | ||||||
|
Part Number: ES-1200-0600-20-M (5 Pcs)
Extension Springs - 12x60x2 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Dec 11, 2025 Regular price
$8.77 AUD
Regular price
Unit price
per
5 Per Sell Unit
Excludes GST and overseas Taxes & Duties |
||||||
|
||||||
|
OD (D0)
12.00
mm (Equiv. 0.472 in.) |
Overall Length (L0)
65
mm (Equiv. 2.559 in.) |
Wire Diameter (d)
2.000
mm (Equiv. 0.079 in.) |
Max. Extension (L1)
78.10
mm |
Spring Rate
6.57
N/mm |
Initial Tension (IT)
34.3
N |
|
| Material: Steel Load at L1: 120.62 N End Type: Double Loop | ||||||
|
Part Number: ES-1200-0650-20-M (50 Pcs)
Extension Springs - 12x65x2 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Dec 11, 2025 Regular price
$160.86 AUD
Regular price
Unit price
per
50 Per Sell Unit
Excludes GST and overseas Taxes & Duties |
||||||
|
OD (D0)
12.00
mm (Equiv. 0.472 in.) |
Overall Length (L0)
65
mm (Equiv. 2.559 in.) |
Wire Diameter (d)
2.000
mm (Equiv. 0.079 in.) |
Max. Extension (L1)
78.10
mm |
|
||
| Material: Steel Spring Rate: 6.57 N/mm Initial Tension (IT): 34.3 N Load at L1: 120.62 N End Type: Double Loop | ||||||
|
Part Number: ES-1200-0650-20-M (50 Pcs)
Extension Springs - 12x65x2 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Dec 11, 2025 Regular price
$160.86 AUD
Regular price
Unit price
per
50 Per Sell Unit
Excludes GST and overseas Taxes & Duties |
||||||
|
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
31.8
mm (Equiv. 1.252 in.) |
Wire Diameter (d)
0.89
mm (Equiv. 0.035 in.) |
Max. Extension (L1)
67.310
mm |
Spring Rate
0.368
N/mm |
Initial Tension (IT)
1.8
N |
|
| Material: Steel Load at L1: 14.110 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0318-09-M
Extension Springs - 12.7x31.8x0.89 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$7.05 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
31.8
mm (Equiv. 1.252 in.) |
Wire Diameter (d)
0.89
mm (Equiv. 0.035 in.) |
Max. Extension (L1)
67.310
mm |
|
||
| Material: Steel Spring Rate: 0.368 N/mm Initial Tension (IT): 1.8 N Load at L1: 14.110 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0318-09-M
Extension Springs - 12.7x31.8x0.89 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$7.05 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
31.8
mm (Equiv. 1.252 in.) |
Wire Diameter (d)
0.99
mm (Equiv. 0.039 in.) |
Max. Extension (L1)
59.440
mm |
Spring Rate
0.841
N/mm |
Initial Tension (IT)
2.2
N |
|
| Material: Steel Load at L1: 25.800 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0318-10-M
Extension Springs - 12.7x31.8x0.99 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$7.32 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
31.8
mm (Equiv. 1.252 in.) |
Wire Diameter (d)
0.99
mm (Equiv. 0.039 in.) |
Max. Extension (L1)
59.440
mm |
|
||
| Material: Steel Spring Rate: 0.841 N/mm Initial Tension (IT): 2.2 N Load at L1: 25.800 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0318-10-M
Extension Springs - 12.7x31.8x0.99 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$7.32 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
31.8
mm (Equiv. 1.252 in.) |
Wire Diameter (d)
1.25
mm (Equiv. 0.049 in.) |
Max. Extension (L1)
47.750
mm |
Spring Rate
2.450
N/mm |
Initial Tension (IT)
3.9
N |
|
| Material: Steel Load at L1: 43.370 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0318-12-M
Extension Springs - 12.7x31.8x1.25 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$7.50 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
31.8
mm (Equiv. 1.252 in.) |
Wire Diameter (d)
1.25
mm (Equiv. 0.049 in.) |
Max. Extension (L1)
47.750
mm |
|
||
| Material: Steel Spring Rate: 2.450 N/mm Initial Tension (IT): 3.9 N Load at L1: 43.370 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0318-12-M
Extension Springs - 12.7x31.8x1.25 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$7.50 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
31.8
mm (Equiv. 1.252 in.) |
Wire Diameter (d)
1.40
mm (Equiv. 0.055 in.) |
Max. Extension (L1)
44.450
mm |
Spring Rate
4.270
N/mm |
Initial Tension (IT)
5.3
N |
|
| Material: Steel Load at L1: 58.270 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0318-14-M
Extension Springs - 12.7x31.8x1.4 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$7.86 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
31.8
mm (Equiv. 1.252 in.) |
Wire Diameter (d)
1.40
mm (Equiv. 0.055 in.) |
Max. Extension (L1)
44.450
mm |
|
||
| Material: Steel Spring Rate: 4.270 N/mm Initial Tension (IT): 5.3 N Load at L1: 58.270 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0318-14-M
Extension Springs - 12.7x31.8x1.4 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$7.86 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
31.8
mm (Equiv. 1.252 in.) |
Wire Diameter (d)
1.60
mm (Equiv. 0.063 in.) |
Max. Extension (L1)
41.400
mm |
Spring Rate
8.210
N/mm |
Initial Tension (IT)
7.6
N |
|
| Material: Steel Load at L1: 83.630 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0318-16-M
Extension Springs - 12.7x31.8x1.6 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$8.14 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
31.8
mm (Equiv. 1.252 in.) |
Wire Diameter (d)
1.60
mm (Equiv. 0.063 in.) |
Max. Extension (L1)
41.400
mm |
|
||
| Material: Steel Spring Rate: 8.210 N/mm Initial Tension (IT): 7.6 N Load at L1: 83.630 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0318-16-M
Extension Springs - 12.7x31.8x1.6 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$8.14 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
38.1
mm (Equiv. 1.5 in.) |
Wire Diameter (d)
0.99
mm (Equiv. 0.039 in.) |
Max. Extension (L1)
84.330
mm |
Spring Rate
0.508
N/mm |
Initial Tension (IT)
2.2
N |
|
| Material: Steel Load at L1: 25.800 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0381-10-M
Extension Springs - 12.7x38.1x0.99 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$7.41 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
38.1
mm (Equiv. 1.5 in.) |
Wire Diameter (d)
0.99
mm (Equiv. 0.039 in.) |
Max. Extension (L1)
84.330
mm |
|
||
| Material: Steel Spring Rate: 0.508 N/mm Initial Tension (IT): 2.2 N Load at L1: 25.800 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0381-10-M
Extension Springs - 12.7x38.1x0.99 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$7.41 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
38.1
mm (Equiv. 1.5 in.) |
Wire Diameter (d)
0.89
mm (Equiv. 0.035 in.) |
Max. Extension (L1)
96.770
mm |
Spring Rate
0.210
N/mm |
Initial Tension (IT)
1.8
N |
|
| Material: Steel Load at L1: 14.110 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0381-09-M
Extension Springs - 12.7x38.1x0.89 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$7.32 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
38.1
mm (Equiv. 1.5 in.) |
Wire Diameter (d)
0.89
mm (Equiv. 0.035 in.) |
Max. Extension (L1)
96.770
mm |
|
||
| Material: Steel Spring Rate: 0.210 N/mm Initial Tension (IT): 1.8 N Load at L1: 14.110 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0381-09-M
Extension Springs - 12.7x38.1x0.89 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$7.32 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
38.1
mm (Equiv. 1.5 in.) |
Wire Diameter (d)
1.25
mm (Equiv. 0.049 in.) |
Max. Extension (L1)
67.060
mm |
Spring Rate
1.366
N/mm |
Initial Tension (IT)
3.9
N |
|
| Material: Steel Load at L1: 43.370 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0381-12-M
Extension Springs - 12.7x38.1x1.25 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$7.59 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
38.1
mm (Equiv. 1.5 in.) |
Wire Diameter (d)
1.25
mm (Equiv. 0.049 in.) |
Max. Extension (L1)
67.060
mm |
|
||
| Material: Steel Spring Rate: 1.366 N/mm Initial Tension (IT): 3.9 N Load at L1: 43.370 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0381-12-M
Extension Springs - 12.7x38.1x1.25 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$7.59 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
38.1
mm (Equiv. 1.5 in.) |
Wire Diameter (d)
1.60
mm (Equiv. 0.063 in.) |
Max. Extension (L1)
55.120
mm |
Spring Rate
4.470
N/mm |
Initial Tension (IT)
7.6
N |
|
| Material: Steel Load at L1: 83.630 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0381-16-M
Extension Springs - 12.7x38.1x1.6 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$8.32 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
38.1
mm (Equiv. 1.5 in.) |
Wire Diameter (d)
1.60
mm (Equiv. 0.063 in.) |
Max. Extension (L1)
55.120
mm |
|
||
| Material: Steel Spring Rate: 4.470 N/mm Initial Tension (IT): 7.6 N Load at L1: 83.630 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0381-16-M
Extension Springs - 12.7x38.1x1.6 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$8.32 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
38.1
mm (Equiv. 1.5 in.) |
Wire Diameter (d)
1.40
mm (Equiv. 0.055 in.) |
Max. Extension (L1)
61.210
mm |
Spring Rate
2.280
N/mm |
Initial Tension (IT)
5.3
N |
|
| Material: Steel Load at L1: 58.270 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0381-14-M
Extension Springs - 12.7x38.1x1.4 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$8.05 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
38.1
mm (Equiv. 1.5 in.) |
Wire Diameter (d)
1.40
mm (Equiv. 0.055 in.) |
Max. Extension (L1)
61.210
mm |
|
||
| Material: Steel Spring Rate: 2.280 N/mm Initial Tension (IT): 5.3 N Load at L1: 58.270 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0381-14-M
Extension Springs - 12.7x38.1x1.4 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$8.05 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
41.3
mm (Equiv. 1.626 in.) |
Wire Diameter (d)
2.03
mm (Equiv. 0.08 in.) |
Spring Rate
11.59
N/mm |
Initial Tension (IT)
11.6
N |
|
|
| Material: Hard Drawn - Zinc | ||||||
|
Part Number: ES-1270-0413-20-M
Extension Springs - 12.7x41.3x2.03 mm Stainless Steel - Hard Drawn - Zinc Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Nov 27, 2025 Regular price
$5.50 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
41.3
mm (Equiv. 1.626 in.) |
Wire Diameter (d)
2.03
mm (Equiv. 0.08 in.) |
|
|||
| Material: Hard Drawn - Zinc Spring Rate: 11.59 N/mm Initial Tension (IT): 11.6 N | ||||||
|
Part Number: ES-1270-0413-20-M
Extension Springs - 12.7x41.3x2.03 mm Stainless Steel - Hard Drawn - Zinc Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Nov 27, 2025 Regular price
$5.50 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
44.5
mm (Equiv. 1.752 in.) |
Wire Diameter (d)
1.25
mm (Equiv. 0.049 in.) |
Max. Extension (L1)
86.110
mm |
Spring Rate
0.946
N/mm |
Initial Tension (IT)
3.9
N |
|
| Material: Steel Load at L1: 43.370 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0445-12-M
Extension Springs - 12.7x44.5x1.25 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$7.77 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
44.5
mm (Equiv. 1.752 in.) |
Wire Diameter (d)
1.25
mm (Equiv. 0.049 in.) |
Max. Extension (L1)
86.110
mm |
|
||
| Material: Steel Spring Rate: 0.946 N/mm Initial Tension (IT): 3.9 N Load at L1: 43.370 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0445-12-M
Extension Springs - 12.7x44.5x1.25 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$7.77 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
44.5
mm (Equiv. 1.752 in.) |
Wire Diameter (d)
0.89
mm (Equiv. 0.035 in.) |
Max. Extension (L1)
126.490
mm |
Spring Rate
0.145
N/mm |
Initial Tension (IT)
1.8
N |
|
| Material: Steel Load at L1: 14.110 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0445-09-M
Extension Springs - 12.7x44.5x0.89 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$7.41 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
44.5
mm (Equiv. 1.752 in.) |
Wire Diameter (d)
0.89
mm (Equiv. 0.035 in.) |
Max. Extension (L1)
126.490
mm |
|
||
| Material: Steel Spring Rate: 0.145 N/mm Initial Tension (IT): 1.8 N Load at L1: 14.110 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0445-09-M
Extension Springs - 12.7x44.5x0.89 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$7.41 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
44.5
mm (Equiv. 1.752 in.) |
Wire Diameter (d)
0.99
mm (Equiv. 0.039 in.) |
Max. Extension (L1)
108.970
mm |
Spring Rate
0.350
N/mm |
Initial Tension (IT)
2.2
N |
|
| Material: Steel Load at L1: 25.800 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0445-10-M
Extension Springs - 12.7x44.5x0.99 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$7.59 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
44.5
mm (Equiv. 1.752 in.) |
Wire Diameter (d)
0.99
mm (Equiv. 0.039 in.) |
Max. Extension (L1)
108.970
mm |
|
||
| Material: Steel Spring Rate: 0.350 N/mm Initial Tension (IT): 2.2 N Load at L1: 25.800 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0445-10-M
Extension Springs - 12.7x44.5x0.99 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$7.59 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
44.5
mm (Equiv. 1.752 in.) |
Wire Diameter (d)
1.60
mm (Equiv. 0.063 in.) |
Max. Extension (L1)
67.560
mm |
Spring Rate
3.270
N/mm |
Initial Tension (IT)
7.6
N |
|
| Material: Steel Load at L1: 83.630 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0445-16-M
Extension Springs - 12.7x44.5x1.6 mm Music Wire - Steel Spring 1 Available Now | Further orders can be expected around Thu, Jan 01, 2026 Regular price
$6.59 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
44.5
mm (Equiv. 1.752 in.) |
Wire Diameter (d)
1.60
mm (Equiv. 0.063 in.) |
Max. Extension (L1)
67.560
mm |
|
||
| Material: Steel Spring Rate: 3.270 N/mm Initial Tension (IT): 7.6 N Load at L1: 83.630 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0445-16-M
Extension Springs - 12.7x44.5x1.6 mm Music Wire - Steel Spring 1 Available Now | Further orders can be expected around Thu, Jan 01, 2026 Regular price
$6.59 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
44.5
mm (Equiv. 1.752 in.) |
Wire Diameter (d)
1.40
mm (Equiv. 0.055 in.) |
Max. Extension (L1)
76.450
mm |
Spring Rate
1.576
N/mm |
Initial Tension (IT)
5.3
N |
|
| Material: Steel Load at L1: 58.270 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0445-14-M
Extension Springs - 12.7x44.5x1.4 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$8.23 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
44.5
mm (Equiv. 1.752 in.) |
Wire Diameter (d)
1.40
mm (Equiv. 0.055 in.) |
Max. Extension (L1)
76.450
mm |
|
||
| Material: Steel Spring Rate: 1.576 N/mm Initial Tension (IT): 5.3 N Load at L1: 58.270 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0445-14-M
Extension Springs - 12.7x44.5x1.4 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$8.23 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
50.8
mm (Equiv. 2 in.) |
Wire Diameter (d)
0.89
mm (Equiv. 0.035 in.) |
Max. Extension (L1)
155.450
mm |
Spring Rate
0.129
N/mm |
Initial Tension (IT)
1.8
N |
|
| Material: Steel Load at L1: 14.110 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0508-09-M
Extension Springs - 12.7x50.8x0.89 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$7.59 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
50.8
mm (Equiv. 2 in.) |
Wire Diameter (d)
0.89
mm (Equiv. 0.035 in.) |
Max. Extension (L1)
155.450
mm |
|
||
| Material: Steel Spring Rate: 0.129 N/mm Initial Tension (IT): 1.8 N Load at L1: 14.110 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0508-09-M
Extension Springs - 12.7x50.8x0.89 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$7.59 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
50.8
mm (Equiv. 2 in.) |
Wire Diameter (d)
0.99
mm (Equiv. 0.039 in.) |
Max. Extension (L1)
135.380
mm |
Spring Rate
0.263
N/mm |
Initial Tension (IT)
2.2
N |
|
| Material: Steel Load at L1: 25.800 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0508-10-M
Extension Springs - 12.7x50.8x0.99 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$7.77 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
50.8
mm (Equiv. 2 in.) |
Wire Diameter (d)
0.99
mm (Equiv. 0.039 in.) |
Max. Extension (L1)
135.380
mm |
|
||
| Material: Steel Spring Rate: 0.263 N/mm Initial Tension (IT): 2.2 N Load at L1: 25.800 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0508-10-M
Extension Springs - 12.7x50.8x0.99 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$7.77 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
50.8
mm (Equiv. 2 in.) |
Wire Diameter (d)
1.25
mm (Equiv. 0.049 in.) |
Max. Extension (L1)
105.160
mm |
Spring Rate
0.736
N/mm |
Initial Tension (IT)
3.9
N |
|
| Material: Steel Load at L1: 43.370 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0508-12-M
Extension Springs - 12.7x50.8x1.25 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$7.95 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
OD (D0)
12.70
mm (Equiv. 0.5 in.) |
Overall Length (L0)
50.8
mm (Equiv. 2 in.) |
Wire Diameter (d)
1.25
mm (Equiv. 0.049 in.) |
Max. Extension (L1)
105.160
mm |
|
||
| Material: Steel Spring Rate: 0.736 N/mm Initial Tension (IT): 3.9 N Load at L1: 43.370 N End Type: Closed - Full Loop | ||||||
|
Part Number: ES-1270-0508-12-M
Extension Springs - 12.7x50.8x1.25 mm Music Wire - Steel Spring Out of Stock | Backorder Now | Orders can be expected around Thu, Jan 01, 2026 Regular price
$7.95 AUD
Regular price
Unit price
per
Each
Excludes GST and overseas Taxes & Duties |
||||||
|
||||||
