Balances needed for two different windows

Question

For one window, the number 640 is stamped into the coil near where it attaches to the pivot. The other window has the number 740. The coils are screwed to the pivots so I think I can just replace the coils and re-use everything else. I need both springs for each window

Casey · Accepted Answer

Hello,

Your pivot shoe looks like an older version of the 15-180. This shoe is compatible with the S190 coil springs and other related items on both product pages. Based on your coil stamps, see the S190-640 and S190-740. Take a look and thanks for posting!