ASI Product Information

Stock Extension Springs...

• Extensive stock range, with over 1,000 sizes of round wire compression and extension springs to choose from, they are ideal for product development, maintenance and general engineering.
• All stock springs are manufactured from Hard-drawn steel to AS 1472 Range 2.
• Stainless steel and other materials may be available for springs made to order, enquire for availability and price.
• Springs may be wound either right hand or left hand at spring makers discretion.
• Compression springs with a wire diameter of 1.6mm (0.063") or heavier will have ends ground square.
• All loads and dimensions stated on this website are for reference only, generally tolerances are as follows:
  • Outside diameter: +/- 5%
  • Free Length: +/- 5%
  • Loads: +/- 10%


• All stock compression springs are plain finish and lightly oiled. Special coatings i.e. Electro zinc plated and Mechanically plated and others are available upon request. Minimum charges will apply.

d = Wire Diameter
Lo = Free Length (for spring part numbers E... i.e. E0500-063-5000)
Lb = Body Length (for spring part numbers JWE... i.e. JWE143)
OD = Outside Diameter