Extension Springs Search our extension spring database

Extension Springs
Metric Range

Select a wire diameter below.
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Specifications & Materials

Music Wire to DIN 17223, Class C. No.1.1200 or BS 1408 CR3.

Stainless Steel Wire to DIN 17224, No.1.14310 or BS 2056 302S26.

Ends: German loops, random position

Note: All Springmasters Extension Springs are right hand coiled.

Tolerances: All dimensions and forces conform to DIN 2095 (Grade 2) or BS 1726 Class B.

Surface Finish:
Music Wire = Oiled
Stainless Steel = Self

Recommended Working Temps:
Music Wire = 120°C (max.)
Stainless Steel = 300°C (max.)

Product Order Line: 01527 521000Product Order Line: 01527 521000

Springmasters accept payment by credit card.

Minimum order charge for UK & Rep. of Ireland customers: Orders are subject to a minimum charge of £15 plus carriage, packing & VAT. Minimum order per item £2.50.

Minimum order charge for Overseas customers: Orders are subject to a minimum order charge of £50 Pound Sterling ($100 US Dollars) on an ex-works basis.

image of Springmasters' box of assorted springs

Assorted and Mixed Imperial Sizes

A selection of extension and extension and compression springs are available, in differing quantities and sizes, to purchase securely on-line. We also supply boxed metric compression springs in mixed size boxes.

Part No. Boxed Assorted Extension Springs (Music Wire) Outside Dia. Overall Length £ Price Cart Icon
SM014 200 Small Extension Springs
(35 different sizes)
0.12" - 0.25" 0.5" - 2" 20.49 Buy Now
SM015 50 Medium Extension Springs
(25 different sizes)
0.25" - 0.5" 1.5" - 6" 16.31 Buy Now
SM016 50 Light Extension Springs
(12 different sizes)
0.25" - 0.5" 3" - 9" 19.87 Buy Now
SM017 50 Large Extension Springs
(25 different sizes)
0.5" - 1" 2" - 8" 19.87 Buy Now
SM018 50 Swivel-Ended Extension Springs 0.25" - 0.5" 2" - 4" 33.41 Buy Now
SM019 50 Extension Springs in 12" Lengths
(25 different sizes)
0.375" - 2" 0.125" - 0.75" 29.01 Buy Now
SM006 Giant Box 150 Extension Springs 0.5" - 1.5" 2.5" - 9" 66.71 Buy Now
SM007 Giant Box 75 Extension Springs 0.5" - 1.5" 2.5" - 9" 42.27 Buy Now
Part No. Boxed Assorted Extension Springs (Stainless Steel) Outside Dia. Overall Length £ Price Cart
SM002 50 Medium Extension Springs
(25 different sizes)
0.25" - 0.5" 2" - 6" 23.14 Buy Now
SM025 200 Small Extension Springs
(35 different sizes)
0.1" - 0.285" 0.41" - 2" 34.03 Buy Now
SM026 50 Large Extension Springs
(25 different sizes)
0.5" - 1.1" 2.2" - 6" 30.75 Buy Now
Part No. Boxed Assorted Compression & Extension Springs Outside Dia. Overall Length £ Price Cart
SM003 Giant Box 150 Compression & Extension Springs
(Music Wire)
0.5" - 2" 2" - 9" 54.13 Buy Now
SM004 Giant Box 75 Compression & Extension Springs
(Music Wire)
0.5" - 2" 2" - 9" 32.22 Buy Now
SM005 30 Compression & 30 Extension Springs
(Music Wire)
0.092" - 0.75" 12" lengths 30.08 Buy Now
SM020 Garage Box of 180 Compression & Extension Springs
(80 different sizes - Music Wire)
    30.75 Buy Now
SM021 Service Box of 100 Compression & Extension Springs
(45 different sizes - Music Wire)
    21.89 Buy Now
SM027 180 Extension & Compression Springs
(Stainless Steel)
0.092" - 0.875" 0.375" - 12" 55.42 Buy Now

Metric ExtensionSprings: Mixed size boxes