Spring Pitch

Written by Jerry Ratzlaff on . Posted in Fastener

Spring pitch, abbreviated as p, is the angle of the coils.  The pitch should be 0.5D or smaller.  If the pitch excedes 0.5D, the spring deflection increases to the extent that the coil diameter changes. 


Spring Pitch formula

\(\large{ p = \frac{ L \;-\; h  }{ n_a }  + d  }\)   


\(\large{ p }\) = pitch

\(\large{ L }\) = free length

\(\large{ h }\) = solid coil height

\(\large{ n_s }\) = spring rate

\(\large{ d }\) = wire diameter


Tags: Equations for Spring