RS PRO Steel Extension Spring, 27.2mm x 4mm

View all Extension Springs

Subtotal (1 pack of 10 units)*

£11.63

(exc. VAT)

£13.96

(inc. VAT)

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In Stock
  • 140 unit(s) ready to ship
  • Plus 100 unit(s) ready to ship from another location
  • Plus 500 unit(s) shipping from 16 October 2025
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10 +£1.163£11.63

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RS PRO Stainless Steel Extension Spring, 27.2mm x 4mm
RS Stock No.
821-396

Each (In a Pack of 10)

£0.987

(exc. VAT)

£1.184

(inc. VAT)

RS Stock No.:
751-663
Brand:
RS PRO
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Brand

RS PRO

Material

Steel

Free Length

27.2mm

Maximum Extended Length

95.7mm

Outside Diameter

4mm

Wire Diameter

0.36mm

Initial Tension

4.26N

Spring Rate

0.06N/mm

RoHS Status: Exempt

COO (Country of Origin):
GB
Music Wire Extension Springs

Manufactured from high tensile strength piano/music wire, with a right-hand (clockwise) helix and looped ends.

Features and Benefits

Attached at both ends
Springs absorb and store energy
Create resistance to pulling force
Initial tension manipulation can achieve individual requirements
Wound to oppose extension

Applications:

Automotive interiors and exteriors
Garage door assemblies
Vise-grip pliers
Carburetors
Trampolines
Washing devices
Farm machinery

Standards

Materials to DIN17223 Class C or BS1408 CR3. Dimensions conform to DIN2097 Grade 2. Oiled finish.

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