840 S190 Coil Balance Spring

Product Code: S190-840

840 S190 Coil Balance Spring
Main product image of the S190-840 840 S190 Coil Balance Spring
How to Replace a Triple Coil Balance System
Quantity Price
1-9 $10.99
10-24 $10.22
25-49 $9.45
50-99 $8.75
100+ $8.11
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 8 pounds. This is added together with the other coils to support the whole weight of the sash.
  • This coil is stamped with number 8 or 840.
  • 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 balance This discussion includes image(s). 3 Apr 12, 2021
Help with Balance SpringThis discussion includes image(s). 4 Feb 14, 2021
trying to find replacements for these exact partsThis discussion includes image(s). 2 Feb 10, 2021
Coil springsThis discussion includes image(s). 2 Feb 4, 2021
Replacement parts for MI 380 series windowsThis discussion includes image(s). 8 Jan 27, 2021
Constant force coil balance This discussion includes image(s). 2 Dec 11, 2020
Constant force coil is brokenThis discussion includes image(s). 3 Dec 6, 2020
Replacement Part IdentificationThis discussion includes image(s). 2 Nov 11, 2020
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