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Collection: Springs - Extension - Music Wire

Springs (With Images)

Extension

Music Wire
Stainless Steel

894 Products in this selection

Includes long lengths up to 1 metre
Zinc Plated Spring Steel not recommended for applications exceeding 121 ^oC (250 Deg F).
302 Stainless springs not recommended for applications exceeding 260 ^oC (500 Deg F).
302 stainless steel is slightly magnetic.

Additional resources:
Spings Catalogue PDF
Spring Anchors

A more concise listing may be found on the Smallparts store at Springs - Extension - Music Wire. Smallparts promote the most popular MBA products.

OD (D0)	Overall Length (L0)	Wire Diameter (d)	Max. Extension (L1)	Spring Rate	Initial Tension (IT)	Indicative Image
OD (D0) 38.10 mm _{(1.5 in.)}	Overall Length (L0) 165.1 mm _{(6.5 in.)}	Wire Diameter (d) 3.15 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $112.68 AUD Regular price Sale price $112.68 AUD Unit price per Each
OD (D0)	Overall Length (L0)	Wire Diameter (d)	Max. Extension (L1)	Indicative Image
OD (D0) 38.10 mm _{(1.5 in.)}	Overall Length (L0) 165.1 mm _{(6.5 in.)}	Wire Diameter (d) 3.15 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $112.68 AUD Regular price Sale price $112.68 AUD Unit price per Each View the product page first if you are unsure.
ES-3810-1651-31-M --- Extension Springs - 38.1x165.1x3.15 mm - Steel ES-3810-1651-31-M --- Extension Springs - 38.1x165.1x3.15 mm - Steel Regular price $112.68 AUD Regular price Sale price $112.68 AUD Unit price per Out of stock! Backorder Now
OD (D0) 38.10 mm _{(1.5 in.)}	Overall Length (L0) 165.1 mm _{(6.5 in.)}	Wire Diameter (d) 4.01 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $165.59 AUD Regular price Sale price $165.59 AUD Unit price per Each
OD (D0) 38.10 mm _{(1.5 in.)}	Overall Length (L0) 165.1 mm _{(6.5 in.)}	Wire Diameter (d) 4.01 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $165.59 AUD Regular price Sale price $165.59 AUD Unit price per Each View the product page first if you are unsure.
ES-3810-1651-40-M --- Extension Springs - 38.1x165.1x4.01 mm - Steel ES-3810-1651-40-M --- Extension Springs - 38.1x165.1x4.01 mm - Steel Regular price $165.59 AUD Regular price Sale price $165.59 AUD Unit price per Out of stock! Backorder Now
OD (D0) 38.10 mm _{(1.5 in.)}	Overall Length (L0) 165.1 mm _{(6.5 in.)}	Wire Diameter (d) 4.50 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $195.50 AUD Regular price Sale price $195.50 AUD Unit price per Each
OD (D0) 38.10 mm _{(1.5 in.)}	Overall Length (L0) 165.1 mm _{(6.5 in.)}	Wire Diameter (d) 4.50 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $195.50 AUD Regular price Sale price $195.50 AUD Unit price per Each View the product page first if you are unsure.
ES-3810-1651-45-M --- Extension Springs - 38.1x165.1x4.5 mm - Steel ES-3810-1651-45-M --- Extension Springs - 38.1x165.1x4.5 mm - Steel Regular price $195.50 AUD Regular price Sale price $195.50 AUD Unit price per Out of stock! Backorder Now
OD (D0) 38.10 mm _{(1.5 in.)}	Overall Length (L0) 177.8 mm _{(7 in.)}	Wire Diameter (d) 3.15 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $120.68 AUD Regular price Sale price $120.68 AUD Unit price per Each
OD (D0) 38.10 mm _{(1.5 in.)}	Overall Length (L0) 177.8 mm _{(7 in.)}	Wire Diameter (d) 3.15 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $120.68 AUD Regular price Sale price $120.68 AUD Unit price per Each View the product page first if you are unsure.
ES-3810-1778-31-M --- Extension Springs - 38.1x177.8x3.15 mm - Steel ES-3810-1778-31-M --- Extension Springs - 38.1x177.8x3.15 mm - Steel Regular price $120.68 AUD Regular price Sale price $120.68 AUD Unit price per Out of stock! Backorder Now
OD (D0) 38.10 mm _{(1.5 in.)}	Overall Length (L0) 177.8 mm _{(7 in.)}	Wire Diameter (d) 4.01 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $175.32 AUD Regular price Sale price $175.32 AUD Unit price per Each
OD (D0) 38.10 mm _{(1.5 in.)}	Overall Length (L0) 177.8 mm _{(7 in.)}	Wire Diameter (d) 4.01 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $175.32 AUD Regular price Sale price $175.32 AUD Unit price per Each View the product page first if you are unsure.
ES-3810-1778-40-M --- Extension Springs - 38.1x177.8x4.01 mm - Steel ES-3810-1778-40-M --- Extension Springs - 38.1x177.8x4.01 mm - Steel Regular price $175.32 AUD Regular price Sale price $175.32 AUD Unit price per Out of stock! Backorder Now
OD (D0) 38.10 mm _{(1.5 in.)}	Overall Length (L0) 177.8 mm _{(7 in.)}	Wire Diameter (d) 4.50 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $207.59 AUD Regular price Sale price $207.59 AUD Unit price per Each
OD (D0) 38.10 mm _{(1.5 in.)}	Overall Length (L0) 177.8 mm _{(7 in.)}	Wire Diameter (d) 4.50 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $207.59 AUD Regular price Sale price $207.59 AUD Unit price per Each View the product page first if you are unsure.
ES-3810-1778-45-M --- Extension Springs - 38.1x177.8x4.5 mm - Steel ES-3810-1778-45-M --- Extension Springs - 38.1x177.8x4.5 mm - Steel Regular price $207.59 AUD Regular price Sale price $207.59 AUD Unit price per Out of stock! Backorder Now
OD (D0) 38.10 mm _{(1.5 in.)}	Overall Length (L0) 190.5 mm _{(7.5 in.)}	Wire Diameter (d) 3.15 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $128.23 AUD Regular price Sale price $128.23 AUD Unit price per Each
OD (D0) 38.10 mm _{(1.5 in.)}	Overall Length (L0) 190.5 mm _{(7.5 in.)}	Wire Diameter (d) 3.15 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $128.23 AUD Regular price Sale price $128.23 AUD Unit price per Each View the product page first if you are unsure.
ES-3810-1905-31-M --- Extension Springs - 38.1x190.5x3.15 mm - Steel ES-3810-1905-31-M --- Extension Springs - 38.1x190.5x3.15 mm - Steel Regular price $128.23 AUD Regular price Sale price $128.23 AUD Unit price per Out of stock! Backorder Now
OD (D0) 38.10 mm _{(1.5 in.)}	Overall Length (L0) 190.5 mm _{(7.5 in.)}	Wire Diameter (d) 4.01 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $186.32 AUD Regular price Sale price $186.32 AUD Unit price per Each
OD (D0) 38.10 mm _{(1.5 in.)}	Overall Length (L0) 190.5 mm _{(7.5 in.)}	Wire Diameter (d) 4.01 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $186.32 AUD Regular price Sale price $186.32 AUD Unit price per Each View the product page first if you are unsure.
ES-3810-1905-40-M --- Extension Springs - 38.1x190.5x4.01 mm - Steel ES-3810-1905-40-M --- Extension Springs - 38.1x190.5x4.01 mm - Steel Regular price $186.32 AUD Regular price Sale price $186.32 AUD Unit price per Out of stock! Backorder Now
OD (D0) 38.10 mm _{(1.5 in.)}	Overall Length (L0) 190.5 mm _{(7.5 in.)}	Wire Diameter (d) 4.50 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $221.59 AUD Regular price Sale price $221.59 AUD Unit price per Each
OD (D0) 38.10 mm _{(1.5 in.)}	Overall Length (L0) 190.5 mm _{(7.5 in.)}	Wire Diameter (d) 4.50 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $221.59 AUD Regular price Sale price $221.59 AUD Unit price per Each View the product page first if you are unsure.
ES-3810-1905-45-M --- Extension Springs - 38.1x190.5x4.5 mm - Steel ES-3810-1905-45-M --- Extension Springs - 38.1x190.5x4.5 mm - Steel Regular price $221.59 AUD Regular price Sale price $221.59 AUD Unit price per Out of stock! Backorder Now
OD (D0) 38.10 mm _{(1.5 in.)}	Overall Length (L0) 203.2 mm _{(8 in.)}	Wire Diameter (d) 3.15 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $138.95 AUD Regular price Sale price $138.95 AUD Unit price per Each
OD (D0) 38.10 mm _{(1.5 in.)}	Overall Length (L0) 203.2 mm _{(8 in.)}	Wire Diameter (d) 3.15 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $138.95 AUD Regular price Sale price $138.95 AUD Unit price per Each View the product page first if you are unsure.
ES-3810-2032-31-M --- Extension Springs - 38.1x203.2x3.15 mm - Steel ES-3810-2032-31-M --- Extension Springs - 38.1x203.2x3.15 mm - Steel Regular price $138.95 AUD Regular price Sale price $138.95 AUD Unit price per Out of stock! Backorder Now
OD (D0) 38.10 mm _{(1.5 in.)}	Overall Length (L0) 203.2 mm _{(8 in.)}	Wire Diameter (d) 4.01 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $197.05 AUD Regular price Sale price $197.05 AUD Unit price per Each
OD (D0) 38.10 mm _{(1.5 in.)}	Overall Length (L0) 203.2 mm _{(8 in.)}	Wire Diameter (d) 4.01 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $197.05 AUD Regular price Sale price $197.05 AUD Unit price per Each View the product page first if you are unsure.
ES-3810-2032-40-M --- Extension Springs - 38.1x203.2x4.01 mm - Steel ES-3810-2032-40-M --- Extension Springs - 38.1x203.2x4.01 mm - Steel Regular price $197.05 AUD Regular price Sale price $197.05 AUD Unit price per Out of stock! Backorder Now
OD (D0) 38.10 mm _{(1.5 in.)}	Overall Length (L0) 203.2 mm _{(8 in.)}	Wire Diameter (d) 4.50 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $234.14 AUD Regular price Sale price $234.14 AUD Unit price per Each
OD (D0) 38.10 mm _{(1.5 in.)}	Overall Length (L0) 203.2 mm _{(8 in.)}	Wire Diameter (d) 4.50 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $234.14 AUD Regular price Sale price $234.14 AUD Unit price per Each View the product page first if you are unsure.
ES-3810-2032-45-M --- Extension Springs - 38.1x203.2x4.5 mm - Steel ES-3810-2032-45-M --- Extension Springs - 38.1x203.2x4.5 mm - Steel Regular price $234.14 AUD Regular price Sale price $234.14 AUD Unit price per Out of stock! Backorder Now
OD (D0) 38.10 mm _{(1.5 in.)}	Overall Length (L0) 371.0 mm _{(14.606 in.)}	Wire Diameter (d) 5.00 mm _{(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 - Music Wire Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $284.68 AUD Regular price Sale price $284.68 AUD Unit price per Each
OD (D0) 38.10 mm _{(1.5 in.)}	Overall Length (L0) 371.0 mm _{(14.606 in.)}	Wire Diameter (d) 5.00 mm _{(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 - Music Wire Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $284.68 AUD Regular price Sale price $284.68 AUD Unit price per Each View the product page first if you are unsure.
ES-3810-3710-50-M --- Extension Springs - 38.1x371x5 mm - Music Wire ES-3810-3710-50-M --- Extension Springs - 38.1x371x5 mm - Music Wire Regular price $284.68 AUD Regular price Sale price $284.68 AUD Unit price per Out of stock! Backorder Now
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 127.0 mm _{(5 in.)}	Wire Diameter (d) 4.01 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $151.05 AUD Regular price Sale price $151.05 AUD Unit price per Each
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 127.0 mm _{(5 in.)}	Wire Diameter (d) 4.01 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $151.05 AUD Regular price Sale price $151.05 AUD Unit price per Each View the product page first if you are unsure.
ES-4445-1270-40-M --- Extension Springs - 44.45x127x4.01 mm - Steel ES-4445-1270-40-M --- Extension Springs - 44.45x127x4.01 mm - Steel Regular price $151.05 AUD Regular price Sale price $151.05 AUD Unit price per Out of stock! Backorder Now
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 127.0 mm _{(5 in.)}	Wire Diameter (d) 4.50 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $178.95 AUD Regular price Sale price $178.95 AUD Unit price per Each
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 127.0 mm _{(5 in.)}	Wire Diameter (d) 4.50 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $178.95 AUD Regular price Sale price $178.95 AUD Unit price per Each View the product page first if you are unsure.
ES-4445-1270-45-M --- Extension Springs - 44.45x127x4.5 mm - Steel ES-4445-1270-45-M --- Extension Springs - 44.45x127x4.5 mm - Steel Regular price $178.95 AUD Regular price Sale price $178.95 AUD Unit price per Out of stock! Backorder Now
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 127.0 mm _{(5 in.)}	Wire Diameter (d) 5.00 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $211.14 AUD Regular price Sale price $211.14 AUD Unit price per Each
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 127.0 mm _{(5 in.)}	Wire Diameter (d) 5.00 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $211.14 AUD Regular price Sale price $211.14 AUD Unit price per Each View the product page first if you are unsure.
ES-4445-1270-50-M --- Extension Springs - 44.45x127x5 mm - Steel ES-4445-1270-50-M --- Extension Springs - 44.45x127x5 mm - Steel Regular price $211.14 AUD Regular price Sale price $211.14 AUD Unit price per Out of stock! Backorder Now
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 139.7 mm _{(5.5 in.)}	Wire Diameter (d) 4.01 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $162.95 AUD Regular price Sale price $162.95 AUD Unit price per Each
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 139.7 mm _{(5.5 in.)}	Wire Diameter (d) 4.01 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $162.95 AUD Regular price Sale price $162.95 AUD Unit price per Each View the product page first if you are unsure.
ES-4445-1397-40-M --- Extension Springs - 44.45x139.7x4.01 mm - Steel ES-4445-1397-40-M --- Extension Springs - 44.45x139.7x4.01 mm - Steel Regular price $162.95 AUD Regular price Sale price $162.95 AUD Unit price per Out of stock! Backorder Now
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 139.7 mm _{(5.5 in.)}	Wire Diameter (d) 4.50 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $192.32 AUD Regular price Sale price $192.32 AUD Unit price per Each
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 139.7 mm _{(5.5 in.)}	Wire Diameter (d) 4.50 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $192.32 AUD Regular price Sale price $192.32 AUD Unit price per Each View the product page first if you are unsure.
ES-4445-1397-45-M --- Extension Springs - 44.45x139.7x4.5 mm - Steel ES-4445-1397-45-M --- Extension Springs - 44.45x139.7x4.5 mm - Steel Regular price $192.32 AUD Regular price Sale price $192.32 AUD Unit price per Out of stock! Backorder Now
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 139.7 mm _{(5.5 in.)}	Wire Diameter (d) 5.00 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $229.05 AUD Regular price Sale price $229.05 AUD Unit price per Each
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 139.7 mm _{(5.5 in.)}	Wire Diameter (d) 5.00 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $229.05 AUD Regular price Sale price $229.05 AUD Unit price per Each View the product page first if you are unsure.
ES-4445-1397-50-M --- Extension Springs - 44.45x139.7x5 mm - Steel ES-4445-1397-50-M --- Extension Springs - 44.45x139.7x5 mm - Steel Regular price $229.05 AUD Regular price Sale price $229.05 AUD Unit price per Out of stock! Backorder Now
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 152.4 mm _{(6 in.)}	Wire Diameter (d) 4.01 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $173.77 AUD Regular price Sale price $173.77 AUD Unit price per Each
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 152.4 mm _{(6 in.)}	Wire Diameter (d) 4.01 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $173.77 AUD Regular price Sale price $173.77 AUD Unit price per Each View the product page first if you are unsure.
ES-4445-1524-40-M --- Extension Springs - 44.45x152.4x4.01 mm - Steel ES-4445-1524-40-M --- Extension Springs - 44.45x152.4x4.01 mm - Steel Regular price $173.77 AUD Regular price Sale price $173.77 AUD Unit price per Out of stock! Backorder Now
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 152.4 mm _{(6 in.)}	Wire Diameter (d) 4.50 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $207.77 AUD Regular price Sale price $207.77 AUD Unit price per Each
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 152.4 mm _{(6 in.)}	Wire Diameter (d) 4.50 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $207.77 AUD Regular price Sale price $207.77 AUD Unit price per Each View the product page first if you are unsure.
ES-4445-1524-45-M --- Extension Springs - 44.45x152.4x4.5 mm - Steel ES-4445-1524-45-M --- Extension Springs - 44.45x152.4x4.5 mm - Steel Regular price $207.77 AUD Regular price Sale price $207.77 AUD Unit price per Out of stock! Backorder Now
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 152.4 mm _{(6 in.)}	Wire Diameter (d) 5.00 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $247.59 AUD Regular price Sale price $247.59 AUD Unit price per Each
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 152.4 mm _{(6 in.)}	Wire Diameter (d) 5.00 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $247.59 AUD Regular price Sale price $247.59 AUD Unit price per Each View the product page first if you are unsure.
ES-4445-1524-50-M --- Extension Springs - 44.45x152.4x5 mm - Steel ES-4445-1524-50-M --- Extension Springs - 44.45x152.4x5 mm - Steel Regular price $247.59 AUD Regular price Sale price $247.59 AUD Unit price per Out of stock! Backorder Now
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 165.1 mm _{(6.5 in.)}	Wire Diameter (d) 4.01 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $184.86 AUD Regular price Sale price $184.86 AUD Unit price per Each
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 165.1 mm _{(6.5 in.)}	Wire Diameter (d) 4.01 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $184.86 AUD Regular price Sale price $184.86 AUD Unit price per Each View the product page first if you are unsure.
ES-4445-1651-40-M --- Extension Springs - 44.45x165.1x4.01 mm - Steel ES-4445-1651-40-M --- Extension Springs - 44.45x165.1x4.01 mm - Steel Regular price $184.86 AUD Regular price Sale price $184.86 AUD Unit price per Out of stock! Backorder Now
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 165.1 mm _{(6.5 in.)}	Wire Diameter (d) 4.50 mm _{(0.177 in.)}	Max. Extension (L1) 288.800 mm	Spring Rate 3.450 N/mm	Initial Tension (IT) 42.3 N
Material: Steel Load at L1: 469.330 N End Type: Closed - Full Loop
Part Number: ES-4445-1651-45-M Extension Springs - 44.45x165.1x4.5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $222.41 AUD Regular price Sale price $222.41 AUD Unit price per Each
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 165.1 mm _{(6.5 in.)}	Wire Diameter (d) 4.50 mm _{(0.177 in.)}	Max. Extension (L1) 288.800 mm
Material: Steel Spring Rate: 3.450 N/mm Initial Tension (IT): 42.3 N Load at L1: 469.330 N End Type: Closed - Full Loop
Part Number: ES-4445-1651-45-M Extension Springs - 44.45x165.1x4.5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $222.41 AUD Regular price Sale price $222.41 AUD Unit price per Each View the product page first if you are unsure.
ES-4445-1651-45-M --- Extension Springs - 44.45x165.1x4.5 mm - Steel ES-4445-1651-45-M --- Extension Springs - 44.45x165.1x4.5 mm - Steel Regular price $222.41 AUD Regular price Sale price $222.41 AUD Unit price per Out of stock! Backorder Now