quick tilt balance spring

A home owner from Wilmington, DE says:
October 7, 2017
I have a small window with 2 balance springs that are broken. There is a number 740 stamped on the spring. The springs are attached to the bracket with one screw. The other end rides free on the window quick tilt.

There are no markings on the window for manufacture.
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Tom from SWISCO responded:
October 12, 2017
Before we throw out any guesses, can you send a picture of the pivot shoe? That's the plastic block that slides up and down in the window and holds the coil.
A home owner from Wilmington says:
October 16, 2017
I hope these pictures will help. The window sash is 22" x 25". The spring has 740 stamped on it.
User submitted photos of a window balance.
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Tom from SWISCO responded:
October 23, 2017
Excellent. We've listed the relevant hardware on the right. Let me know if you have questions.
740 S190 Coil Balance Spring
740 S190 Coil Balance Spring
S190-740
$9.74
Coil Balance Shoe
Coil Balance Shoe
15-180
$3.97
Balance Bushing
Balance Bushing
15-182
$1.80
Coil Balance Clip
Coil Balance Clip
15-186
$5.05
How to Replace a Triple Coil Balance System
How to Replace a Triple Coil Balance System
VIDEO
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How to remove window pivot shoes
How to remove window pivot shoes
VIDEO
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Anatomy of a tilt window
Anatomy of a tilt window
VIDEO
WATCH >
Removing a Triple Coil Window Balance
Removing a Triple Coil Window Balance
GUIDE
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