640 S190 Coil Balance Spring

Product Code: S190-640

Product Description
This is a Series 190 stainless steel spring for tilt-in windows. It moderates the operation of your window sash using a specifically calibrated coil spring that allows the window to stay open when raised and remain shut when closed.
  • Individually, this coil balance can hold 6 pounds. This is added together with the other coils to support the whole weight of the sash.
  • This coil is stamped with number 6 or 640.
  • Measures 1/2" thick.
  • Designed to work with the 15-180, Pivot Shoe (sold separately).
  • This coil balance spring is sold individually, not in sets.
  • Can work for either the left or right side of the window interchangeably.
  • Coil balances are also known as constant force window balances.
Good Idea!
Balances are sold individually, however, it is a good idea to replace both window balances at the same time. Pairing a new balance with an old one would cause the new balance to wear out faster.
Customer Questions & Answers
Discussion # Of Replies Last Post Date
Coil springsThis discussion includes image(s). 2 Aug 30, 2019
Window BalanceThis discussion includes image(s). 2 Aug 21, 2019
Tilt in window balanceThis discussion includes image(s). 6 Aug 14, 2019
Balance from a Tri-Built CuttingEdge double hung windoThis discussion includes image(s). 4 May 29, 2019
Double coil balancersThis discussion includes image(s). 2 May 23, 2019
Certainteed window replacement partsThis discussion includes image(s). 2 May 16, 2019
No marking found on existing hardwareThis discussion includes image(s). 2 May 14, 2019
Coil spring replacement This discussion includes image(s). 2 May 7, 2019
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