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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) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 165.1 mm _{(6.5 in.)}	Wire Diameter (d) 5.00 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $264.14 AUD Regular price Sale price $264.14 AUD Unit price per Each
OD (D0)	Overall Length (L0)	Wire Diameter (d)	Max. Extension (L1)	Indicative Image
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 165.1 mm _{(6.5 in.)}	Wire Diameter (d) 5.00 mm _{(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 - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $264.14 AUD Regular price Sale price $264.14 AUD Unit price per Each View the product page first if you are unsure.
ES-4445-1651-50-M --- Extension Springs - 44.45x165.1x5 mm - Steel ES-4445-1651-50-M --- Extension Springs - 44.45x165.1x5 mm - Steel Regular price $264.14 AUD Regular price Sale price $264.14 AUD Unit price per Out of stock! Backorder Now
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 177.8 mm _{(7 in.)}	Wire Diameter (d) 4.01 mm _{(0.158 in.)}	Max. Extension (L1) 396.490 mm	Spring Rate 1.648 N/mm	Initial Tension (IT) 25.8 N
Material: Steel Load at L1: 392.040 N End Type: Closed - Full Loop
Part Number: ES-4445-1778-40-M Extension Springs - 44.45x177.8x4.01 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $195.86 AUD Regular price Sale price $195.86 AUD Unit price per Each
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 177.8 mm _{(7 in.)}	Wire Diameter (d) 4.01 mm _{(0.158 in.)}	Max. Extension (L1) 396.490 mm
Material: Steel Spring Rate: 1.648 N/mm Initial Tension (IT): 25.8 N Load at L1: 392.040 N End Type: Closed - Full Loop
Part Number: ES-4445-1778-40-M Extension Springs - 44.45x177.8x4.01 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $195.86 AUD Regular price Sale price $195.86 AUD Unit price per Each View the product page first if you are unsure.
ES-4445-1778-40-M --- Extension Springs - 44.45x177.8x4.01 mm - Steel ES-4445-1778-40-M --- Extension Springs - 44.45x177.8x4.01 mm - Steel Regular price $195.86 AUD Regular price Sale price $195.86 AUD Unit price per Out of stock! Backorder Now
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 177.8 mm _{(7 in.)}	Wire Diameter (d) 4.50 mm _{(0.177 in.)}	Max. Extension (L1) 320.290 mm	Spring Rate 2.990 N/mm	Initial Tension (IT) 42.3 N
Material: Steel Load at L1: 469.330 N End Type: Closed - Full Loop
Part Number: ES-4445-1778-45-M Extension Springs - 44.45x177.8x4.5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $236.68 AUD Regular price Sale price $236.68 AUD Unit price per Each
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 177.8 mm _{(7 in.)}	Wire Diameter (d) 4.50 mm _{(0.177 in.)}	Max. Extension (L1) 320.290 mm
Material: Steel Spring Rate: 2.990 N/mm Initial Tension (IT): 42.3 N Load at L1: 469.330 N End Type: Closed - Full Loop
Part Number: ES-4445-1778-45-M Extension Springs - 44.45x177.8x4.5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $236.68 AUD Regular price Sale price $236.68 AUD Unit price per Each View the product page first if you are unsure.
ES-4445-1778-45-M --- Extension Springs - 44.45x177.8x4.5 mm - Steel ES-4445-1778-45-M --- Extension Springs - 44.45x177.8x4.5 mm - Steel Regular price $236.68 AUD Regular price Sale price $236.68 AUD Unit price per Out of stock! Backorder Now
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 177.8 mm _{(7 in.)}	Wire Diameter (d) 5.00 mm _{(0.197 in.)}	Max. Extension (L1) 274.830 mm	Spring Rate 5.168 N/mm	Initial Tension (IT) 64.9 N
Material: Steel Load at L1: 564.040 N End Type: Closed - Full Loop
Part Number: ES-4445-1778-50-M Extension Springs - 44.45x177.8x5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $283.68 AUD Regular price Sale price $283.68 AUD Unit price per Each
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 177.8 mm _{(7 in.)}	Wire Diameter (d) 5.00 mm _{(0.197 in.)}	Max. Extension (L1) 274.830 mm
Material: Steel Spring Rate: 5.168 N/mm Initial Tension (IT): 64.9 N Load at L1: 564.040 N End Type: Closed - Full Loop
Part Number: ES-4445-1778-50-M Extension Springs - 44.45x177.8x5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $283.68 AUD Regular price Sale price $283.68 AUD Unit price per Each View the product page first if you are unsure.
ES-4445-1778-50-M --- Extension Springs - 44.45x177.8x5 mm - Steel ES-4445-1778-50-M --- Extension Springs - 44.45x177.8x5 mm - Steel Regular price $283.68 AUD Regular price Sale price $283.68 AUD Unit price per Out of stock! Backorder Now
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 190.5 mm _{(7.5 in.)}	Wire Diameter (d) 4.01 mm _{(0.158 in.)}	Max. Extension (L1) 439.170 mm	Spring Rate 1.488 N/mm	Initial Tension (IT) 25.8 N
Material: Steel Load at L1: 392.040 N End Type: Closed - Full Loop
Part Number: ES-4445-1905-40-M Extension Springs - 44.45x190.5x4.01 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $208.23 AUD Regular price Sale price $208.23 AUD Unit price per Each
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 190.5 mm _{(7.5 in.)}	Wire Diameter (d) 4.01 mm _{(0.158 in.)}	Max. Extension (L1) 439.170 mm
Material: Steel Spring Rate: 1.488 N/mm Initial Tension (IT): 25.8 N Load at L1: 392.040 N End Type: Closed - Full Loop
Part Number: ES-4445-1905-40-M Extension Springs - 44.45x190.5x4.01 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $208.23 AUD Regular price Sale price $208.23 AUD Unit price per Each View the product page first if you are unsure.
ES-4445-1905-40-M --- Extension Springs - 44.45x190.5x4.01 mm - Steel ES-4445-1905-40-M --- Extension Springs - 44.45x190.5x4.01 mm - Steel Regular price $208.23 AUD Regular price Sale price $208.23 AUD Unit price per Out of stock! Backorder Now
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 190.5 mm _{(7.5 in.)}	Wire Diameter (d) 4.50 mm _{(0.177 in.)}	Max. Extension (L1) 352.040 mm	Spring Rate 2.640 N/mm	Initial Tension (IT) 42.3 N
Material: Steel Load at L1: 469.330 N End Type: Closed - Full Loop
Part Number: ES-4445-1905-45-M Extension Springs - 44.45x190.5x4.5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $252.68 AUD Regular price Sale price $252.68 AUD Unit price per Each
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 190.5 mm _{(7.5 in.)}	Wire Diameter (d) 4.50 mm _{(0.177 in.)}	Max. Extension (L1) 352.040 mm
Material: Steel Spring Rate: 2.640 N/mm Initial Tension (IT): 42.3 N Load at L1: 469.330 N End Type: Closed - Full Loop
Part Number: ES-4445-1905-45-M Extension Springs - 44.45x190.5x4.5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $252.68 AUD Regular price Sale price $252.68 AUD Unit price per Each View the product page first if you are unsure.
ES-4445-1905-45-M --- Extension Springs - 44.45x190.5x4.5 mm - Steel ES-4445-1905-45-M --- Extension Springs - 44.45x190.5x4.5 mm - Steel Regular price $252.68 AUD Regular price Sale price $252.68 AUD Unit price per Out of stock! Backorder Now
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 190.5 mm _{(7.5 in.)}	Wire Diameter (d) 5.00 mm _{(0.197 in.)}	Max. Extension (L1) 300.230 mm	Spring Rate 4.555 N/mm	Initial Tension (IT) 64.9 N
Material: Steel Load at L1: 564.040 N End Type: Closed - Full Loop
Part Number: ES-4445-1905-50-M Extension Springs - 44.45x190.5x5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $303.50 AUD Regular price Sale price $303.50 AUD Unit price per Each
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 190.5 mm _{(7.5 in.)}	Wire Diameter (d) 5.00 mm _{(0.197 in.)}	Max. Extension (L1) 300.230 mm
Material: Steel Spring Rate: 4.555 N/mm Initial Tension (IT): 64.9 N Load at L1: 564.040 N End Type: Closed - Full Loop
Part Number: ES-4445-1905-50-M Extension Springs - 44.45x190.5x5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $303.50 AUD Regular price Sale price $303.50 AUD Unit price per Each View the product page first if you are unsure.
ES-4445-1905-50-M --- Extension Springs - 44.45x190.5x5 mm - Steel ES-4445-1905-50-M --- Extension Springs - 44.45x190.5x5 mm - Steel Regular price $303.50 AUD Regular price Sale price $303.50 AUD Unit price per Out of stock! Backorder Now
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 203.2 mm _{(8 in.)}	Wire Diameter (d) 4.01 mm _{(0.158 in.)}	Max. Extension (L1) 481.840 mm	Spring Rate 1.312 N/mm	Initial Tension (IT) 25.8 N
Material: Steel Load at L1: 392.040 N End Type: Closed - Full Loop
Part Number: ES-4445-2032-40-M Extension Springs - 44.45x203.2x4.01 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $224.50 AUD Regular price Sale price $224.50 AUD Unit price per Each
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 203.2 mm _{(8 in.)}	Wire Diameter (d) 4.01 mm _{(0.158 in.)}	Max. Extension (L1) 481.840 mm
Material: Steel Spring Rate: 1.312 N/mm Initial Tension (IT): 25.8 N Load at L1: 392.040 N End Type: Closed - Full Loop
Part Number: ES-4445-2032-40-M Extension Springs - 44.45x203.2x4.01 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $224.50 AUD Regular price Sale price $224.50 AUD Unit price per Each View the product page first if you are unsure.
ES-4445-2032-40-M --- Extension Springs - 44.45x203.2x4.01 mm - Steel ES-4445-2032-40-M --- Extension Springs - 44.45x203.2x4.01 mm - Steel Regular price $224.50 AUD Regular price Sale price $224.50 AUD Unit price per Out of stock! Backorder Now
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 203.2 mm _{(8 in.)}	Wire Diameter (d) 4.50 mm _{(0.177 in.)}	Max. Extension (L1) 383.790 mm	Spring Rate 2.360 N/mm	Initial Tension (IT) 42.3 N
Material: Steel Load at L1: 469.330 N End Type: Closed - Full Loop
Part Number: ES-4445-2032-45-M Extension Springs - 44.45x203.2x4.5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $266.86 AUD Regular price Sale price $266.86 AUD Unit price per Each
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 203.2 mm _{(8 in.)}	Wire Diameter (d) 4.50 mm _{(0.177 in.)}	Max. Extension (L1) 383.790 mm
Material: Steel Spring Rate: 2.360 N/mm Initial Tension (IT): 42.3 N Load at L1: 469.330 N End Type: Closed - Full Loop
Part Number: ES-4445-2032-45-M Extension Springs - 44.45x203.2x4.5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $266.86 AUD Regular price Sale price $266.86 AUD Unit price per Each View the product page first if you are unsure.
ES-4445-2032-45-M --- Extension Springs - 44.45x203.2x4.5 mm - Steel ES-4445-2032-45-M --- Extension Springs - 44.45x203.2x4.5 mm - Steel Regular price $266.86 AUD Regular price Sale price $266.86 AUD Unit price per Out of stock! Backorder Now
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 203.2 mm _{(8 in.)}	Wire Diameter (d) 5.00 mm _{(0.197 in.)}	Max. Extension (L1) 325.630 mm	Spring Rate 4.081 N/mm	Initial Tension (IT) 64.9 N
Material: Steel Load at L1: 564.040 N End Type: Closed - Full Loop
Part Number: ES-4445-2032-50-M Extension Springs - 44.45x203.2x5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $312.41 AUD Regular price Sale price $312.41 AUD Unit price per Each
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 203.2 mm _{(8 in.)}	Wire Diameter (d) 5.00 mm _{(0.197 in.)}	Max. Extension (L1) 325.630 mm
Material: Steel Spring Rate: 4.081 N/mm Initial Tension (IT): 64.9 N Load at L1: 564.040 N End Type: Closed - Full Loop
Part Number: ES-4445-2032-50-M Extension Springs - 44.45x203.2x5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $312.41 AUD Regular price Sale price $312.41 AUD Unit price per Each View the product page first if you are unsure.
ES-4445-2032-50-M --- Extension Springs - 44.45x203.2x5 mm - Steel ES-4445-2032-50-M --- Extension Springs - 44.45x203.2x5 mm - Steel Regular price $312.41 AUD Regular price Sale price $312.41 AUD Unit price per Out of stock! Backorder Now
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 228.6 mm _{(9 in.)}	Wire Diameter (d) 4.01 mm _{(0.158 in.)}	Max. Extension (L1) 567.180 mm	Spring Rate 0.840 N/mm	Initial Tension (IT) 25.8 N
Material: Steel Load at L1: 392.040 N End Type: Closed - Full Loop
Part Number: ES-4445-2286-40-M Extension Springs - 44.45x228.6x4.01 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $246.77 AUD Regular price Sale price $246.77 AUD Unit price per Each
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 228.6 mm _{(9 in.)}	Wire Diameter (d) 4.01 mm _{(0.158 in.)}	Max. Extension (L1) 567.180 mm
Material: Steel Spring Rate: 0.840 N/mm Initial Tension (IT): 25.8 N Load at L1: 392.040 N End Type: Closed - Full Loop
Part Number: ES-4445-2286-40-M Extension Springs - 44.45x228.6x4.01 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $246.77 AUD Regular price Sale price $246.77 AUD Unit price per Each View the product page first if you are unsure.
ES-4445-2286-40-M --- Extension Springs - 44.45x228.6x4.01 mm - Steel ES-4445-2286-40-M --- Extension Springs - 44.45x228.6x4.01 mm - Steel Regular price $246.77 AUD Regular price Sale price $246.77 AUD Unit price per Out of stock! Backorder Now
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 228.6 mm _{(9 in.)}	Wire Diameter (d) 4.50 mm _{(0.177 in.)}	Max. Extension (L1) 447.290 mm	Spring Rate 1.961 N/mm	Initial Tension (IT) 42.3 N
Material: Steel Load at L1: 469.330 N End Type: Closed - Full Loop
Part Number: ES-4445-2286-45-M Extension Springs - 44.45x228.6x4.5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $301.86 AUD Regular price Sale price $301.86 AUD Unit price per Each
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 228.6 mm _{(9 in.)}	Wire Diameter (d) 4.50 mm _{(0.177 in.)}	Max. Extension (L1) 447.290 mm
Material: Steel Spring Rate: 1.961 N/mm Initial Tension (IT): 42.3 N Load at L1: 469.330 N End Type: Closed - Full Loop
Part Number: ES-4445-2286-45-M Extension Springs - 44.45x228.6x4.5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $301.86 AUD Regular price Sale price $301.86 AUD Unit price per Each View the product page first if you are unsure.
ES-4445-2286-45-M --- Extension Springs - 44.45x228.6x4.5 mm - Steel ES-4445-2286-45-M --- Extension Springs - 44.45x228.6x4.5 mm - Steel Regular price $301.86 AUD Regular price Sale price $301.86 AUD Unit price per Out of stock! Backorder Now
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 228.6 mm _{(9 in.)}	Wire Diameter (d) 5.00 mm _{(0.197 in.)}	Max. Extension (L1) 376.170 mm	Spring Rate 3.366 N/mm	Initial Tension (IT) 64.9 N
Material: Steel Load at L1: 564.040 N End Type: Closed - Full Loop
Part Number: ES-4445-2286-50-M Extension Springs - 44.45x228.6x5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $330.32 AUD Regular price Sale price $330.32 AUD Unit price per Each
OD (D0) 44.45 mm _{(1.75 in.)}	Overall Length (L0) 228.6 mm _{(9 in.)}	Wire Diameter (d) 5.00 mm _{(0.197 in.)}	Max. Extension (L1) 376.170 mm
Material: Steel Spring Rate: 3.366 N/mm Initial Tension (IT): 64.9 N Load at L1: 564.040 N End Type: Closed - Full Loop
Part Number: ES-4445-2286-50-M Extension Springs - 44.45x228.6x5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $330.32 AUD Regular price Sale price $330.32 AUD Unit price per Each View the product page first if you are unsure.
ES-4445-2286-50-M --- Extension Springs - 44.45x228.6x5 mm - Steel ES-4445-2286-50-M --- Extension Springs - 44.45x228.6x5 mm - Steel Regular price $330.32 AUD Regular price Sale price $330.32 AUD Unit price per Out of stock! Backorder Now
OD (D0) 44.50 mm _{(1.752 in.)}	Overall Length (L0) 434.5 mm _{(17.106 in.)}	Wire Diameter (d) 5.00 mm _{(0.197 in.)}			Initial Tension (IT) 1.5 N
Material: Music Wire Body Length: 355.600 mm End Type: Closed - Full Loop
Part Number: ES-4445-4345-50-M Extension Springs - 44.5x434.5x5 mm - Music Wire Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $335.05 AUD Regular price Sale price $335.05 AUD Unit price per Each
OD (D0) 44.50 mm _{(1.752 in.)}	Overall Length (L0) 434.5 mm _{(17.106 in.)}	Wire Diameter (d) 5.00 mm _{(0.197 in.)}
Material: Music Wire Initial Tension (IT): 1.5 N Body Length: 355.600 mm End Type: Closed - Full Loop
Part Number: ES-4445-4345-50-M Extension Springs - 44.5x434.5x5 mm - Music Wire Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $335.05 AUD Regular price Sale price $335.05 AUD Unit price per Each View the product page first if you are unsure.
ES-4445-4345-50-M --- Extension Springs - 44.5x434.5x5 mm - Music Wire ES-4445-4345-50-M --- Extension Springs - 44.5x434.5x5 mm - Music Wire Regular price $335.05 AUD Regular price Sale price $335.05 AUD Unit price per Out of stock! Backorder Now
OD (D0) 50.80 mm _{(2 in.)}	Overall Length (L0) 25.4 mm _{(1 in.)}	Wire Diameter (d) 4.50 mm _{(0.177 in.)}	Max. Extension (L1) 228.350 mm	Spring Rate 4.240 N/mm	Initial Tension (IT) 37.2 N
Material: Steel Load at L1: 413.460 N End Type: Closed - Full Loop
Part Number: ES-5080-0254-45-M Extension Springs - 50.8x25.4x4.5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $103.32 AUD Regular price Sale price $103.32 AUD Unit price per Each
OD (D0) 50.80 mm _{(2 in.)}	Overall Length (L0) 25.4 mm _{(1 in.)}	Wire Diameter (d) 4.50 mm _{(0.177 in.)}	Max. Extension (L1) 228.350 mm
Material: Steel Spring Rate: 4.240 N/mm Initial Tension (IT): 37.2 N Load at L1: 413.460 N End Type: Closed - Full Loop
Part Number: ES-5080-0254-45-M Extension Springs - 50.8x25.4x4.5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $103.32 AUD Regular price Sale price $103.32 AUD Unit price per Each View the product page first if you are unsure.
ES-5080-0254-45-M --- Extension Springs - 50.8x25.4x4.5 mm - Steel ES-5080-0254-45-M --- Extension Springs - 50.8x25.4x4.5 mm - Steel Regular price $103.32 AUD Regular price Sale price $103.32 AUD Unit price per Out of stock! Backorder Now
OD (D0) 50.80 mm _{(2 in.)}	Overall Length (L0) 25.4 mm _{(1 in.)}	Wire Diameter (d) 5.00 mm _{(0.197 in.)}	Max. Extension (L1) 202.690 mm	Spring Rate 7.060 N/mm	Initial Tension (IT) 57.3 N
Material: Steel Load at L1: 501.670 N End Type: Closed - Full Loop
Part Number: ES-5080-0254-50-M Extension Springs - 50.8x25.4x5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $129.86 AUD Regular price Sale price $129.86 AUD Unit price per Each
OD (D0) 50.80 mm _{(2 in.)}	Overall Length (L0) 25.4 mm _{(1 in.)}	Wire Diameter (d) 5.00 mm _{(0.197 in.)}	Max. Extension (L1) 202.690 mm
Material: Steel Spring Rate: 7.060 N/mm Initial Tension (IT): 57.3 N Load at L1: 501.670 N End Type: Closed - Full Loop
Part Number: ES-5080-0254-50-M Extension Springs - 50.8x25.4x5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $129.86 AUD Regular price Sale price $129.86 AUD Unit price per Each View the product page first if you are unsure.
ES-5080-0254-50-M --- Extension Springs - 50.8x25.4x5 mm - Steel ES-5080-0254-50-M --- Extension Springs - 50.8x25.4x5 mm - Steel Regular price $129.86 AUD Regular price Sale price $129.86 AUD Unit price per Out of stock! Backorder Now
OD (D0) 50.80 mm _{(2 in.)}	Overall Length (L0) 139.7 mm _{(5.5 in.)}	Wire Diameter (d) 4.50 mm _{(0.177 in.)}	Max. Extension (L1) 267.210 mm	Spring Rate 3.270 N/mm	Initial Tension (IT) 37.2 N
Material: Steel Load at L1: 413.460 N End Type: Closed - Full Loop
Part Number: ES-5080-1397-45-M Extension Springs - 50.8x139.7x4.5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $216.59 AUD Regular price Sale price $216.59 AUD Unit price per Each
OD (D0) 50.80 mm _{(2 in.)}	Overall Length (L0) 139.7 mm _{(5.5 in.)}	Wire Diameter (d) 4.50 mm _{(0.177 in.)}	Max. Extension (L1) 267.210 mm
Material: Steel Spring Rate: 3.270 N/mm Initial Tension (IT): 37.2 N Load at L1: 413.460 N End Type: Closed - Full Loop
Part Number: ES-5080-1397-45-M Extension Springs - 50.8x139.7x4.5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $216.59 AUD Regular price Sale price $216.59 AUD Unit price per Each View the product page first if you are unsure.
ES-5080-1397-45-M --- Extension Springs - 50.8x139.7x4.5 mm - Steel ES-5080-1397-45-M --- Extension Springs - 50.8x139.7x4.5 mm - Steel Regular price $216.59 AUD Regular price Sale price $216.59 AUD Unit price per Out of stock! Backorder Now
OD (D0) 50.80 mm _{(2 in.)}	Overall Length (L0) 139.7 mm _{(5.5 in.)}	Wire Diameter (d) 5.00 mm _{(0.197 in.)}	Max. Extension (L1) 232.920 mm	Spring Rate 5.518 N/mm	Initial Tension (IT) 57.3 N
Material: Steel Load at L1: 501.670 N End Type: Closed - Full Loop
Part Number: ES-5080-1397-50-M Extension Springs - 50.8x139.7x5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $258.86 AUD Regular price Sale price $258.86 AUD Unit price per Each
OD (D0) 50.80 mm _{(2 in.)}	Overall Length (L0) 139.7 mm _{(5.5 in.)}	Wire Diameter (d) 5.00 mm _{(0.197 in.)}	Max. Extension (L1) 232.920 mm
Material: Steel Spring Rate: 5.518 N/mm Initial Tension (IT): 57.3 N Load at L1: 501.670 N End Type: Closed - Full Loop
Part Number: ES-5080-1397-50-M Extension Springs - 50.8x139.7x5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $258.86 AUD Regular price Sale price $258.86 AUD Unit price per Each View the product page first if you are unsure.
ES-5080-1397-50-M --- Extension Springs - 50.8x139.7x5 mm - Steel ES-5080-1397-50-M --- Extension Springs - 50.8x139.7x5 mm - Steel Regular price $258.86 AUD Regular price Sale price $258.86 AUD Unit price per Out of stock! Backorder Now
OD (D0) 50.80 mm _{(2 in.)}	Overall Length (L0) 152.4 mm _{(6 in.)}	Wire Diameter (d) 4.50 mm _{(0.177 in.)}	Max. Extension (L1) 305.820 mm	Spring Rate 2.680 N/mm	Initial Tension (IT) 37.2 N
Material: Steel Load at L1: 413.460 N End Type: Closed - Full Loop
Part Number: ES-5080-1524-45-M Extension Springs - 50.8x152.4x4.5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $231.95 AUD Regular price Sale price $231.95 AUD Unit price per Each
OD (D0) 50.80 mm _{(2 in.)}	Overall Length (L0) 152.4 mm _{(6 in.)}	Wire Diameter (d) 4.50 mm _{(0.177 in.)}	Max. Extension (L1) 305.820 mm
Material: Steel Spring Rate: 2.680 N/mm Initial Tension (IT): 37.2 N Load at L1: 413.460 N End Type: Closed - Full Loop
Part Number: ES-5080-1524-45-M Extension Springs - 50.8x152.4x4.5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $231.95 AUD Regular price Sale price $231.95 AUD Unit price per Each View the product page first if you are unsure.
ES-5080-1524-45-M --- Extension Springs - 50.8x152.4x4.5 mm - Steel ES-5080-1524-45-M --- Extension Springs - 50.8x152.4x4.5 mm - Steel Regular price $231.95 AUD Regular price Sale price $231.95 AUD Unit price per Out of stock! Backorder Now
OD (D0) 50.80 mm _{(2 in.)}	Overall Length (L0) 152.4 mm _{(6 in.)}	Wire Diameter (d) 5.00 mm _{(0.197 in.)}	Max. Extension (L1) 262.890 mm	Spring Rate 4.455 N/mm	Initial Tension (IT) 57.3 N
Material: Steel Load at L1: 501.670 N End Type: Closed - Full Loop
Part Number: ES-5080-1524-50-M Extension Springs - 50.8x152.4x5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $284.14 AUD Regular price Sale price $284.14 AUD Unit price per Each
OD (D0) 50.80 mm _{(2 in.)}	Overall Length (L0) 152.4 mm _{(6 in.)}	Wire Diameter (d) 5.00 mm _{(0.197 in.)}	Max. Extension (L1) 262.890 mm
Material: Steel Spring Rate: 4.455 N/mm Initial Tension (IT): 57.3 N Load at L1: 501.670 N End Type: Closed - Full Loop
Part Number: ES-5080-1524-50-M Extension Springs - 50.8x152.4x5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $284.14 AUD Regular price Sale price $284.14 AUD Unit price per Each View the product page first if you are unsure.
ES-5080-1524-50-M --- Extension Springs - 50.8x152.4x5 mm - Steel ES-5080-1524-50-M --- Extension Springs - 50.8x152.4x5 mm - Steel Regular price $284.14 AUD Regular price Sale price $284.14 AUD Unit price per Out of stock! Backorder Now
OD (D0) 50.80 mm _{(2 in.)}	Overall Length (L0) 165.1 mm _{(6.5 in.)}	Wire Diameter (d) 4.50 mm _{(0.177 in.)}	Max. Extension (L1) 344.680 mm	Spring Rate 2.260 N/mm	Initial Tension (IT) 37.2 N
Material: Steel Load at L1: 413.460 N End Type: Closed - Full Loop
Part Number: ES-5080-1651-45-M Extension Springs - 50.8x165.1x4.5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $248.14 AUD Regular price Sale price $248.14 AUD Unit price per Each
OD (D0) 50.80 mm _{(2 in.)}	Overall Length (L0) 165.1 mm _{(6.5 in.)}	Wire Diameter (d) 4.50 mm _{(0.177 in.)}	Max. Extension (L1) 344.680 mm
Material: Steel Spring Rate: 2.260 N/mm Initial Tension (IT): 37.2 N Load at L1: 413.460 N End Type: Closed - Full Loop
Part Number: ES-5080-1651-45-M Extension Springs - 50.8x165.1x4.5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $248.14 AUD Regular price Sale price $248.14 AUD Unit price per Each View the product page first if you are unsure.
ES-5080-1651-45-M --- Extension Springs - 50.8x165.1x4.5 mm - Steel ES-5080-1651-45-M --- Extension Springs - 50.8x165.1x4.5 mm - Steel Regular price $248.14 AUD Regular price Sale price $248.14 AUD Unit price per Out of stock! Backorder Now
OD (D0) 50.80 mm _{(2 in.)}	Overall Length (L0) 165.1 mm _{(6.5 in.)}	Wire Diameter (d) 5.00 mm _{(0.197 in.)}	Max. Extension (L1) 293.120 mm	Spring Rate 3.850 N/mm	Initial Tension (IT) 57.3 N
Material: Steel Load at L1: 501.670 N End Type: Closed - Full Loop
Part Number: ES-5080-1651-50-M Extension Springs - 50.8x165.1x5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $308.23 AUD Regular price Sale price $308.23 AUD Unit price per Each
OD (D0) 50.80 mm _{(2 in.)}	Overall Length (L0) 165.1 mm _{(6.5 in.)}	Wire Diameter (d) 5.00 mm _{(0.197 in.)}	Max. Extension (L1) 293.120 mm
Material: Steel Spring Rate: 3.850 N/mm Initial Tension (IT): 57.3 N Load at L1: 501.670 N End Type: Closed - Full Loop
Part Number: ES-5080-1651-50-M Extension Springs - 50.8x165.1x5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $308.23 AUD Regular price Sale price $308.23 AUD Unit price per Each View the product page first if you are unsure.
ES-5080-1651-50-M --- Extension Springs - 50.8x165.1x5 mm - Steel ES-5080-1651-50-M --- Extension Springs - 50.8x165.1x5 mm - Steel Regular price $308.23 AUD Regular price Sale price $308.23 AUD Unit price per Out of stock! Backorder Now
OD (D0) 50.80 mm _{(2 in.)}	Overall Length (L0) 177.8 mm _{(7 in.)}	Wire Diameter (d) 4.50 mm _{(0.177 in.)}	Max. Extension (L1) 383.540 mm	Spring Rate 1.944 N/mm	Initial Tension (IT) 37.2 N
Material: Steel Load at L1: 413.460 N End Type: Closed - Full Loop
Part Number: ES-5080-1778-45-M Extension Springs - 50.8x177.8x4.5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $266.86 AUD Regular price Sale price $266.86 AUD Unit price per Each
OD (D0) 50.80 mm _{(2 in.)}	Overall Length (L0) 177.8 mm _{(7 in.)}	Wire Diameter (d) 4.50 mm _{(0.177 in.)}	Max. Extension (L1) 383.540 mm
Material: Steel Spring Rate: 1.944 N/mm Initial Tension (IT): 37.2 N Load at L1: 413.460 N End Type: Closed - Full Loop
Part Number: ES-5080-1778-45-M Extension Springs - 50.8x177.8x4.5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $266.86 AUD Regular price Sale price $266.86 AUD Unit price per Each View the product page first if you are unsure.
ES-5080-1778-45-M --- Extension Springs - 50.8x177.8x4.5 mm - Steel ES-5080-1778-45-M --- Extension Springs - 50.8x177.8x4.5 mm - Steel Regular price $266.86 AUD Regular price Sale price $266.86 AUD Unit price per Out of stock! Backorder Now
OD (D0) 50.80 mm _{(2 in.)}	Overall Length (L0) 177.8 mm _{(7 in.)}	Wire Diameter (d) 5.00 mm _{(0.197 in.)}	Max. Extension (L1) 323.340 mm	Spring Rate 3.345 N/mm	Initial Tension (IT) 57.3 N
Material: Steel Load at L1: 501.670 N End Type: Closed - Full Loop
Part Number: ES-5080-1778-50-M Extension Springs - 50.8x177.8x5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $318.59 AUD Regular price Sale price $318.59 AUD Unit price per Each
OD (D0) 50.80 mm _{(2 in.)}	Overall Length (L0) 177.8 mm _{(7 in.)}	Wire Diameter (d) 5.00 mm _{(0.197 in.)}	Max. Extension (L1) 323.340 mm
Material: Steel Spring Rate: 3.345 N/mm Initial Tension (IT): 57.3 N Load at L1: 501.670 N End Type: Closed - Full Loop
Part Number: ES-5080-1778-50-M Extension Springs - 50.8x177.8x5 mm - Steel Out of Stock \| Backorder Now \| Orders can be expected around Tue, Jul 08, 2025 Regular price $318.59 AUD Regular price Sale price $318.59 AUD Unit price per Each View the product page first if you are unsure.
ES-5080-1778-50-M --- Extension Springs - 50.8x177.8x5 mm - Steel ES-5080-1778-50-M --- Extension Springs - 50.8x177.8x5 mm - Steel Regular price $318.59 AUD Regular price Sale price $318.59 AUD Unit price per Out of stock! Backorder Now