The pitch of a spring is the distance from the center of one coil to the center of the adjacent coil like threads (lead) on a bolt or screw.

Pitch is sometimes confused with gap or the space between the coils, so it is recommended that the engineer specify the number of active coils when designing springs.

Pitch is often confusing for those unfamiliar with spring design. Please contact the Newcomb Spring facility nearest you for more information on determining the pitch of a spring as well as other considerations of spring design. 

-The 19th China (Guangzhou) Int’l Spring Industry Exhibition