Selection
Springs are organized in order of increasing diameter and wire size.

Note that in each category the spring rate decreases as the free length increases.

After selecting the proper outside diameter of the spring needed, choose a range for wire diameter and then select a range for free length. The broader the range entered the more options will be shown.

Units of Measure
All units are in Inches, Pounds for Loads and Pounds per Inch for spring rate.
To convert to metric units multiply using the following factors.
  • Inches to millimeter = 25.4
  • Pounds to Newtons = 4.45
  • Lbs/Inch to N/mm = 0.175
Inquire at sales@mrspring.com for quantities of 1000 or more
Request Information Search by Specification
Unit of Measure
Items
Compression_Springs

0.21 Inch (in) Outside Diameter, 0.018 Inch (in) Wire Diameter, and 0.25 Inch (in) Free Length Music Wire Compression Spring
List Price $5.83
Compression_Springs

0.21 Inch (in) Outside Diameter, 0.018 Inch (in) Wire Diameter, and 0.313 Inch (in) Free Length Music Wire Compression Spring
List Price $5.83
Compression_Springs

0.21 Inch (in) Outside Diameter, 0.018 Inch (in) Wire Diameter, and 0.375 Inch (in) Free Length Music Wire Compression Spring
List Price $5.83
Compression_Springs

0.21 Inch (in) Outside Diameter, 0.018 Inch (in) Wire Diameter, and 0.438 Inch (in) Free Length Music Wire Compression Spring
List Price $5.83
Compression_Springs

0.21 Inch (in) Outside Diameter, 0.018 Inch (in) Wire Diameter, and 0.5 Inch (in) Free Length Music Wire Compression Spring
List Price $5.83
Description N/A Selection
Springs are organized in order of increasing diameter and wire size.

Note that in each category the spring rate decreases as the free length increases.

After selecting the proper outside diameter of the spring needed, choose a range for wire diameter and then select a range for free length. The broader the range entered the more options will be shown.

Units of Measure
All units are in Inches, Pounds for Loads and Pounds per Inch for spring rate.
To convert to metric units multiply using the following factors.
  • Inches to millimeter = 25.4
  • Pounds to Newtons = 4.45
  • Lbs/Inch to N/mm = 0.175
Inquire at sales@mrspring.com for quantities of 1000 or more
Type N/A Compression
Material N/A Music Wire
Outside Diameter N/A 0.21
Wire Diameter N/A 0.018
Free Length N/A 0.250 N/A 0.313 N/A 0.375 N/A 0.438 N/A 0.500
Load at L1 (MW) N/A 1.5
Load (SS) N/A 1.31
Length L1 N/A 0.115 N/A 0.139 N/A 0.162 N/A 0.185 N/A 0.208
Solid HT N/A 0.07 N/A 0.08 N/A 0.09 N/A 0.101 N/A 0.111
Total Coils N/A 3.889 N/A 4.444 N/A 5.000 N/A 5.611 N/A 6.167
Spring Rate (MW) N/A 11.17 N/A 8.63 N/A 7.05 N/A 5.94 N/A 5.15
Spring Rate (SS) N/A 9.71 N/A 7.5 N/A 6.13 N/A 5.17 N/A 4.48
Ends N/A FEG