Page 22 - FAQ & A
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Step 2: Measure Inside Diameter (I.D.)
Measure the inside diameter of your spring with a tape measure or caliper.The spring I.D.
may also be stamped on the spring fitting.
Step 3: Determine Wire Size
Spring’s wire size can be determined by several different tools or techniques. Use of a caliper, micrometer, or wire gauge is common ways to determine a spring’s wire size. If none of these tools are available, you can easily measure how many coils are in 20 inches then divide the number of coils into 20. (Example: 20 ÷ 80 = .250) Or simply measure ten coils of wire to the nearest 1/16th of an inch, and refer to the spring chart below. Important: the spring must be tightly compressed with no gaps with no tension. It’s also a good idea to measure twenty coils as a double check.
