RS PRO Steel Extension Spring, 77.8mm x 13mm

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Subtotal (1 pack of 5 units)*

£12.01

(exc. VAT)

£14.41

(inc. VAT)

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  • 220 unit(s) ready to ship
  • Plus 125 unit(s) ready to ship from another location
  • Plus 250 unit(s) shipping from 31 October 2025
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Units
Per unit
Per Pack*
5 +£2.402£12.01

*price indicative

RS Stock No.:
121-359
Distrelec Article No.:
304-16-891
Brand:
RS PRO
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Brand

RS PRO

Material

Steel

Free Length

77.8mm

Maximum Extended Length

97.4mm

Outside Diameter

13mm

Wire Diameter

2.5mm

Initial Tension

48.48N

Spring Rate

13.7N/mm

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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