Springs - Extension - Music Wire– Page37 – Miniature Bearings Australia - MBA Minibearings - Online, Pick-Up, Retail, Distributors, Wholesale

OD (D0)	Overall Length (L0)	Wire Diameter (d)	Max. Extension (L1)	Spring Rate	Initial Tension (IT)
Extension Springs - 44.45x165.1x4.5 mm Music Wire - Steel Spring
OD (D0) 44.45 mm	Overall Length (L0) 165.1 mm	Wire Diameter (d) 4.50 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $116.77 AUD Regular price ~~$236.24 AUD~~ Sale price $116.77 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
OD (D0)	Overall Length (L0)	Wire Diameter (d)	Max. Extension (L1)	Indicative Image
Extension Springs - 44.45x165.1x4.5 mm Music Wire - Steel Spring
OD (D0) 44.45 mm	Overall Length (L0) 165.1 mm	Wire Diameter (d) 4.50 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $116.77 AUD Regular price ~~$236.24 AUD~~ Sale price $116.77 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
ES-4445-1651-45-M (Each) --- Extension Springs - 44.45x165.1x4.5 mm Music Wire - Steel Spring Sale ES-4445-1651-45-M (Each) --- Extension Springs - 44.45x165.1x4.5 mm Music Wire - Steel Spring Regular price $116.77 AUD Regular price ~~$236.24 AUD~~ Sale price $116.77 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Out of stock! Backorder Now Sale
Extension Springs - 44.45x177.8x4.01 mm Music Wire - Steel Spring
OD (D0) 44.45 mm	Overall Length (L0) 177.8 mm	Wire Diameter (d) 4.01 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $104.05 AUD Regular price ~~$209.24 AUD~~ Sale price $104.05 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
Extension Springs - 44.45x177.8x4.01 mm Music Wire - Steel Spring
OD (D0) 44.45 mm	Overall Length (L0) 177.8 mm	Wire Diameter (d) 4.01 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $104.05 AUD Regular price ~~$209.24 AUD~~ Sale price $104.05 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
ES-4445-1778-40-M (Each) --- Extension Springs - 44.45x177.8x4.01 mm Music Wire - Steel Spring Sale ES-4445-1778-40-M (Each) --- Extension Springs - 44.45x177.8x4.01 mm Music Wire - Steel Spring Regular price $104.05 AUD Regular price ~~$209.24 AUD~~ Sale price $104.05 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Out of stock! Backorder Now Sale
Extension Springs - 44.45x177.8x4.5 mm Music Wire - Steel Spring
OD (D0) 44.45 mm	Overall Length (L0) 177.8 mm	Wire Diameter (d) 4.50 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $123.59 AUD Regular price ~~$250.71 AUD~~ Sale price $123.59 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
Extension Springs - 44.45x177.8x4.5 mm Music Wire - Steel Spring
OD (D0) 44.45 mm	Overall Length (L0) 177.8 mm	Wire Diameter (d) 4.50 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $123.59 AUD Regular price ~~$250.71 AUD~~ Sale price $123.59 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
ES-4445-1778-45-M (Each) --- Extension Springs - 44.45x177.8x4.5 mm Music Wire - Steel Spring Sale ES-4445-1778-45-M (Each) --- Extension Springs - 44.45x177.8x4.5 mm Music Wire - Steel Spring Regular price $123.59 AUD Regular price ~~$250.71 AUD~~ Sale price $123.59 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Out of stock! Backorder Now Sale
Extension Springs - 44.45x177.8x5 mm Music Wire - Steel Spring
OD (D0) 44.45 mm	Overall Length (L0) 177.8 mm	Wire Diameter (d) 5.00 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $146.23 AUD Regular price ~~$298.48 AUD~~ Sale price $146.23 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
Extension Springs - 44.45x177.8x5 mm Music Wire - Steel Spring
OD (D0) 44.45 mm	Overall Length (L0) 177.8 mm	Wire Diameter (d) 5.00 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $146.23 AUD Regular price ~~$298.48 AUD~~ Sale price $146.23 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
ES-4445-1778-50-M (Each) --- Extension Springs - 44.45x177.8x5 mm Music Wire - Steel Spring Sale ES-4445-1778-50-M (Each) --- Extension Springs - 44.45x177.8x5 mm Music Wire - Steel Spring Regular price $146.23 AUD Regular price ~~$298.48 AUD~~ Sale price $146.23 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Out of stock! Backorder Now Sale
Extension Springs - 44.45x190.5x4.01 mm Music Wire - Steel Spring
OD (D0) 44.45 mm	Overall Length (L0) 190.5 mm	Wire Diameter (d) 4.01 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $110.05 AUD Regular price ~~$221.88 AUD~~ Sale price $110.05 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
Extension Springs - 44.45x190.5x4.01 mm Music Wire - Steel Spring
OD (D0) 44.45 mm	Overall Length (L0) 190.5 mm	Wire Diameter (d) 4.01 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $110.05 AUD Regular price ~~$221.88 AUD~~ Sale price $110.05 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
ES-4445-1905-40-M (Each) --- Extension Springs - 44.45x190.5x4.01 mm Music Wire - Steel Spring Sale ES-4445-1905-40-M (Each) --- Extension Springs - 44.45x190.5x4.01 mm Music Wire - Steel Spring Regular price $110.05 AUD Regular price ~~$221.88 AUD~~ Sale price $110.05 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Out of stock! Backorder Now Sale
Extension Springs - 44.45x190.5x4.5 mm Music Wire - Steel Spring
OD (D0) 44.45 mm	Overall Length (L0) 190.5 mm	Wire Diameter (d) 4.50 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $131.41 AUD Regular price ~~$267.16 AUD~~ Sale price $131.41 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
Extension Springs - 44.45x190.5x4.5 mm Music Wire - Steel Spring
OD (D0) 44.45 mm	Overall Length (L0) 190.5 mm	Wire Diameter (d) 4.50 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $131.41 AUD Regular price ~~$267.16 AUD~~ Sale price $131.41 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
ES-4445-1905-45-M (Each) --- Extension Springs - 44.45x190.5x4.5 mm Music Wire - Steel Spring Sale ES-4445-1905-45-M (Each) --- Extension Springs - 44.45x190.5x4.5 mm Music Wire - Steel Spring Regular price $131.41 AUD Regular price ~~$267.16 AUD~~ Sale price $131.41 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Out of stock! Backorder Now Sale
Extension Springs - 44.45x190.5x5 mm Music Wire - Steel Spring
OD (D0) 44.45 mm	Overall Length (L0) 190.5 mm	Wire Diameter (d) 5.00 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $155.59 AUD Regular price ~~$318.46 AUD~~ Sale price $155.59 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
Extension Springs - 44.45x190.5x5 mm Music Wire - Steel Spring
OD (D0) 44.45 mm	Overall Length (L0) 190.5 mm	Wire Diameter (d) 5.00 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $155.59 AUD Regular price ~~$318.46 AUD~~ Sale price $155.59 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
ES-4445-1905-50-M (Each) --- Extension Springs - 44.45x190.5x5 mm Music Wire - Steel Spring Sale ES-4445-1905-50-M (Each) --- Extension Springs - 44.45x190.5x5 mm Music Wire - Steel Spring Regular price $155.59 AUD Regular price ~~$318.46 AUD~~ Sale price $155.59 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Out of stock! Backorder Now Sale
Extension Springs - 44.45x203.2x4.01 mm Music Wire - Steel Spring
OD (D0) 44.45 mm	Overall Length (L0) 203.2 mm	Wire Diameter (d) 4.01 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $118.05 AUD Regular price ~~$238.94 AUD~~ Sale price $118.05 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
Extension Springs - 44.45x203.2x4.01 mm Music Wire - Steel Spring
OD (D0) 44.45 mm	Overall Length (L0) 203.2 mm	Wire Diameter (d) 4.01 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $118.05 AUD Regular price ~~$238.94 AUD~~ Sale price $118.05 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
ES-4445-2032-40-M (Each) --- Extension Springs - 44.45x203.2x4.01 mm Music Wire - Steel Spring Sale ES-4445-2032-40-M (Each) --- Extension Springs - 44.45x203.2x4.01 mm Music Wire - Steel Spring Regular price $118.05 AUD Regular price ~~$238.94 AUD~~ Sale price $118.05 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Out of stock! Backorder Now Sale
Extension Springs - 44.45x203.2x5 mm Music Wire - Steel Spring
OD (D0) 44.45 mm	Overall Length (L0) 203.2 mm	Wire Diameter (d) 5.00 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $159.95 AUD Regular price ~~$327.64 AUD~~ Sale price $159.95 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
Extension Springs - 44.45x203.2x5 mm Music Wire - Steel Spring
OD (D0) 44.45 mm	Overall Length (L0) 203.2 mm	Wire Diameter (d) 5.00 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $159.95 AUD Regular price ~~$327.64 AUD~~ Sale price $159.95 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
ES-4445-2032-50-M (Each) --- Extension Springs - 44.45x203.2x5 mm Music Wire - Steel Spring Sale ES-4445-2032-50-M (Each) --- Extension Springs - 44.45x203.2x5 mm Music Wire - Steel Spring Regular price $159.95 AUD Regular price ~~$327.64 AUD~~ Sale price $159.95 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Out of stock! Backorder Now Sale
Extension Springs - 44.45x203.2x4.5 mm Music Wire - Steel Spring
OD (D0) 44.45 mm	Overall Length (L0) 203.2 mm	Wire Diameter (d) 4.50 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $138.23 AUD Regular price ~~$281.60 AUD~~ Sale price $138.23 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
Extension Springs - 44.45x203.2x4.5 mm Music Wire - Steel Spring
OD (D0) 44.45 mm	Overall Length (L0) 203.2 mm	Wire Diameter (d) 4.50 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $138.23 AUD Regular price ~~$281.60 AUD~~ Sale price $138.23 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
ES-4445-2032-45-M (Each) --- Extension Springs - 44.45x203.2x4.5 mm Music Wire - Steel Spring Sale ES-4445-2032-45-M (Each) --- Extension Springs - 44.45x203.2x4.5 mm Music Wire - Steel Spring Regular price $138.23 AUD Regular price ~~$281.60 AUD~~ Sale price $138.23 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Out of stock! Backorder Now Sale
Extension Springs - 44.45x228.6x4.01 mm Music Wire - Steel Spring
OD (D0) 44.45 mm	Overall Length (L0) 228.6 mm	Wire Diameter (d) 4.01 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $128.77 AUD Regular price ~~$261.51 AUD~~ Sale price $128.77 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
Extension Springs - 44.45x228.6x4.01 mm Music Wire - Steel Spring
OD (D0) 44.45 mm	Overall Length (L0) 228.6 mm	Wire Diameter (d) 4.01 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $128.77 AUD Regular price ~~$261.51 AUD~~ Sale price $128.77 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
ES-4445-2286-40-M (Each) --- Extension Springs - 44.45x228.6x4.01 mm Music Wire - Steel Spring Sale ES-4445-2286-40-M (Each) --- Extension Springs - 44.45x228.6x4.01 mm Music Wire - Steel Spring Regular price $128.77 AUD Regular price ~~$261.51 AUD~~ Sale price $128.77 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Out of stock! Backorder Now Sale
Extension Springs - 44.45x228.6x4.5 mm Music Wire - Steel Spring
OD (D0) 44.45 mm	Overall Length (L0) 228.6 mm	Wire Diameter (d) 4.50 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $154.95 AUD Regular price ~~$317.06 AUD~~ Sale price $154.95 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
Extension Springs - 44.45x228.6x4.5 mm Music Wire - Steel Spring
OD (D0) 44.45 mm	Overall Length (L0) 228.6 mm	Wire Diameter (d) 4.50 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $154.95 AUD Regular price ~~$317.06 AUD~~ Sale price $154.95 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
ES-4445-2286-45-M (Each) --- Extension Springs - 44.45x228.6x4.5 mm Music Wire - Steel Spring Sale ES-4445-2286-45-M (Each) --- Extension Springs - 44.45x228.6x4.5 mm Music Wire - Steel Spring Regular price $154.95 AUD Regular price ~~$317.06 AUD~~ Sale price $154.95 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Out of stock! Backorder Now Sale
Extension Springs - 44.45x228.6x5 mm Music Wire - Steel Spring
OD (D0) 44.45 mm	Overall Length (L0) 228.6 mm	Wire Diameter (d) 5.00 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $168.68 AUD Regular price ~~$346.11 AUD~~ Sale price $168.68 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
Extension Springs - 44.45x228.6x5 mm Music Wire - Steel Spring
OD (D0) 44.45 mm	Overall Length (L0) 228.6 mm	Wire Diameter (d) 5.00 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $168.68 AUD Regular price ~~$346.11 AUD~~ Sale price $168.68 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
ES-4445-2286-50-M (Each) --- Extension Springs - 44.45x228.6x5 mm Music Wire - Steel Spring Sale ES-4445-2286-50-M (Each) --- Extension Springs - 44.45x228.6x5 mm Music Wire - Steel Spring Regular price $168.68 AUD Regular price ~~$346.11 AUD~~ Sale price $168.68 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Out of stock! Backorder Now Sale
Extension Springs - 44.5x434.5x5 mm Stainless Steel - Music Wire Spring
OD (D0) 44.50 mm	Overall Length (L0) 434.5 mm	Wire Diameter (d) 5.00 mm			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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $224.23 AUD Regular price ~~$267.47 AUD~~ Sale price $224.23 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
Extension Springs - 44.5x434.5x5 mm Stainless Steel - Music Wire Spring
OD (D0) 44.50 mm	Overall Length (L0) 434.5 mm	Wire Diameter (d) 5.00 mm
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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $224.23 AUD Regular price ~~$267.47 AUD~~ Sale price $224.23 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
ES-4445-4345-50-M (Each) --- Extension Springs - 44.5x434.5x5 mm Stainless Steel - Music Wire Spring Sale ES-4445-4345-50-M (Each) --- Extension Springs - 44.5x434.5x5 mm Stainless Steel - Music Wire Spring Regular price $224.23 AUD Regular price ~~$267.47 AUD~~ Sale price $224.23 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Out of stock! Backorder Now Sale
Extension Springs - 50.8x25.4x4.5 mm Music Wire - Steel Spring
OD (D0) 50.80 mm	Overall Length (L0) 25.4 mm	Wire Diameter (d) 4.50 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $54.32 AUD Regular price ~~$107.31 AUD~~ Sale price $54.32 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
Extension Springs - 50.8x25.4x4.5 mm Music Wire - Steel Spring
OD (D0) 50.80 mm	Overall Length (L0) 25.4 mm	Wire Diameter (d) 4.50 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $54.32 AUD Regular price ~~$107.31 AUD~~ Sale price $54.32 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
ES-5080-0254-45-M (Each) --- Extension Springs - 50.8x25.4x4.5 mm Music Wire - Steel Spring Sale ES-5080-0254-45-M (Each) --- Extension Springs - 50.8x25.4x4.5 mm Music Wire - Steel Spring Regular price $54.32 AUD Regular price ~~$107.31 AUD~~ Sale price $54.32 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Out of stock! Backorder Now Sale
Extension Springs - 50.8x25.4x5 mm Music Wire - Steel Spring
OD (D0) 50.80 mm	Overall Length (L0) 25.4 mm	Wire Diameter (d) 5.00 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $69.86 AUD Regular price ~~$136.88 AUD~~ Sale price $69.86 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
Extension Springs - 50.8x25.4x5 mm Music Wire - Steel Spring
OD (D0) 50.80 mm	Overall Length (L0) 25.4 mm	Wire Diameter (d) 5.00 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $69.86 AUD Regular price ~~$136.88 AUD~~ Sale price $69.86 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
ES-5080-0254-50-M (Each) --- Extension Springs - 50.8x25.4x5 mm Music Wire - Steel Spring Sale ES-5080-0254-50-M (Each) --- Extension Springs - 50.8x25.4x5 mm Music Wire - Steel Spring Regular price $69.86 AUD Regular price ~~$136.88 AUD~~ Sale price $69.86 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Out of stock! Backorder Now Sale
Extension Springs - 50.8x139.7x4.5 mm Music Wire - Steel Spring
OD (D0) 50.80 mm	Overall Length (L0) 139.7 mm	Wire Diameter (d) 4.50 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $114.05 AUD Regular price ~~$230.34 AUD~~ Sale price $114.05 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
Extension Springs - 50.8x139.7x4.5 mm Music Wire - Steel Spring
OD (D0) 50.80 mm	Overall Length (L0) 139.7 mm	Wire Diameter (d) 4.50 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $114.05 AUD Regular price ~~$230.34 AUD~~ Sale price $114.05 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
ES-5080-1397-45-M (Each) --- Extension Springs - 50.8x139.7x4.5 mm Music Wire - Steel Spring Sale ES-5080-1397-45-M (Each) --- Extension Springs - 50.8x139.7x4.5 mm Music Wire - Steel Spring Regular price $114.05 AUD Regular price ~~$230.34 AUD~~ Sale price $114.05 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Out of stock! Backorder Now Sale
Extension Springs - 50.8x139.7x5 mm Music Wire - Steel Spring
OD (D0) 50.80 mm	Overall Length (L0) 139.7 mm	Wire Diameter (d) 5.00 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $134.32 AUD Regular price ~~$273.28 AUD~~ Sale price $134.32 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
Extension Springs - 50.8x139.7x5 mm Music Wire - Steel Spring
OD (D0) 50.80 mm	Overall Length (L0) 139.7 mm	Wire Diameter (d) 5.00 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $134.32 AUD Regular price ~~$273.28 AUD~~ Sale price $134.32 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
ES-5080-1397-50-M (Each) --- Extension Springs - 50.8x139.7x5 mm Music Wire - Steel Spring Sale ES-5080-1397-50-M (Each) --- Extension Springs - 50.8x139.7x5 mm Music Wire - Steel Spring Regular price $134.32 AUD Regular price ~~$273.28 AUD~~ Sale price $134.32 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Out of stock! Backorder Now Sale
Extension Springs - 50.8x152.4x4.5 mm Music Wire - Steel Spring
OD (D0) 50.80 mm	Overall Length (L0) 152.4 mm	Wire Diameter (d) 4.50 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $121.32 AUD Regular price ~~$245.85 AUD~~ Sale price $121.32 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
Extension Springs - 50.8x152.4x4.5 mm Music Wire - Steel Spring
OD (D0) 50.80 mm	Overall Length (L0) 152.4 mm	Wire Diameter (d) 4.50 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $121.32 AUD Regular price ~~$245.85 AUD~~ Sale price $121.32 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
ES-5080-1524-45-M (Each) --- Extension Springs - 50.8x152.4x4.5 mm Music Wire - Steel Spring Sale ES-5080-1524-45-M (Each) --- Extension Springs - 50.8x152.4x4.5 mm Music Wire - Steel Spring Regular price $121.32 AUD Regular price ~~$245.85 AUD~~ Sale price $121.32 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Out of stock! Backorder Now Sale
Extension Springs - 50.8x152.4x5 mm Music Wire - Steel Spring
OD (D0) 50.80 mm	Overall Length (L0) 152.4 mm	Wire Diameter (d) 5.00 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $146.59 AUD Regular price ~~$299.42 AUD~~ Sale price $146.59 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
Extension Springs - 50.8x152.4x5 mm Music Wire - Steel Spring
OD (D0) 50.80 mm	Overall Length (L0) 152.4 mm	Wire Diameter (d) 5.00 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $146.59 AUD Regular price ~~$299.42 AUD~~ Sale price $146.59 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
ES-5080-1524-50-M (Each) --- Extension Springs - 50.8x152.4x5 mm Music Wire - Steel Spring Sale ES-5080-1524-50-M (Each) --- Extension Springs - 50.8x152.4x5 mm Music Wire - Steel Spring Regular price $146.59 AUD Regular price ~~$299.42 AUD~~ Sale price $146.59 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Out of stock! Backorder Now Sale
Extension Springs - 50.8x165.1x5 mm Music Wire - Steel Spring
OD (D0) 50.80 mm	Overall Length (L0) 165.1 mm	Wire Diameter (d) 5.00 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $158.14 AUD Regular price ~~$323.79 AUD~~ Sale price $158.14 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
Extension Springs - 50.8x165.1x5 mm Music Wire - Steel Spring
OD (D0) 50.80 mm	Overall Length (L0) 165.1 mm	Wire Diameter (d) 5.00 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $158.14 AUD Regular price ~~$323.79 AUD~~ Sale price $158.14 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
ES-5080-1651-50-M (Each) --- Extension Springs - 50.8x165.1x5 mm Music Wire - Steel Spring Sale ES-5080-1651-50-M (Each) --- Extension Springs - 50.8x165.1x5 mm Music Wire - Steel Spring Regular price $158.14 AUD Regular price ~~$323.79 AUD~~ Sale price $158.14 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Out of stock! Backorder Now Sale
Extension Springs - 50.8x165.1x4.5 mm Music Wire - Steel Spring
OD (D0) 50.80 mm	Overall Length (L0) 165.1 mm	Wire Diameter (d) 4.50 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $129.14 AUD Regular price ~~$262.30 AUD~~ Sale price $129.14 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
Extension Springs - 50.8x165.1x4.5 mm Music Wire - Steel Spring
OD (D0) 50.80 mm	Overall Length (L0) 165.1 mm	Wire Diameter (d) 4.50 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $129.14 AUD Regular price ~~$262.30 AUD~~ Sale price $129.14 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
ES-5080-1651-45-M (Each) --- Extension Springs - 50.8x165.1x4.5 mm Music Wire - Steel Spring Sale ES-5080-1651-45-M (Each) --- Extension Springs - 50.8x165.1x4.5 mm Music Wire - Steel Spring Regular price $129.14 AUD Regular price ~~$262.30 AUD~~ Sale price $129.14 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Out of stock! Backorder Now Sale
Extension Springs - 50.8x177.8x4.5 mm Music Wire - Steel Spring
OD (D0) 50.80 mm	Overall Length (L0) 177.8 mm	Wire Diameter (d) 4.50 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $138.23 AUD Regular price ~~$281.60 AUD~~ Sale price $138.23 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
Extension Springs - 50.8x177.8x4.5 mm Music Wire - Steel Spring
OD (D0) 50.80 mm	Overall Length (L0) 177.8 mm	Wire Diameter (d) 4.50 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $138.23 AUD Regular price ~~$281.60 AUD~~ Sale price $138.23 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
ES-5080-1778-45-M (Each) --- Extension Springs - 50.8x177.8x4.5 mm Music Wire - Steel Spring Sale ES-5080-1778-45-M (Each) --- Extension Springs - 50.8x177.8x4.5 mm Music Wire - Steel Spring Regular price $138.23 AUD Regular price ~~$281.60 AUD~~ Sale price $138.23 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Out of stock! Backorder Now Sale
Extension Springs - 50.8x177.8x5 mm Music Wire - Steel Spring
OD (D0) 50.80 mm	Overall Length (L0) 177.8 mm	Wire Diameter (d) 5.00 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $163.23 AUD Regular price ~~$334.56 AUD~~ Sale price $163.23 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
Extension Springs - 50.8x177.8x5 mm Music Wire - Steel Spring
OD (D0) 50.80 mm	Overall Length (L0) 177.8 mm	Wire Diameter (d) 5.00 mm	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 (Each) Out of Stock \| Backorder Now \| Backorder now for delivery around Thu, Sep 24, 2026 Regular price $163.23 AUD Regular price ~~$334.56 AUD~~ Sale price $163.23 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Quantity Required Backorder: Out of Stock.
ES-5080-1778-50-M (Each) --- Extension Springs - 50.8x177.8x5 mm Music Wire - Steel Spring Sale ES-5080-1778-50-M (Each) --- Extension Springs - 50.8x177.8x5 mm Music Wire - Steel Spring Regular price $163.23 AUD Regular price ~~$334.56 AUD~~ Sale price $163.23 AUD Unit price per Each Excludes GST and overseas Taxes & Duties Out of stock! Backorder Now Sale

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Miniature Bearings Australia

Collection: Springs - Extension - Music Wire

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