31 3 HW CMC 7

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Handy Person from Surprise Arizona

Nov 9, 2023 2:01 pm

Side load single hung balance spring

The metal part is 32 1/8" long. It has a 31 3 HW CMC 7 printed on it

The spring end has a plastic tip that is 1 5/8" long held in with a rivet

The bottom plastic piece is 1" long

Which Swisco balance spring would be a direct replacement for my unit?

Thanks,

Bill

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4 Replies

Jasmine from SWISCO

Nov 10, 2023 3:22 pm

Thanks for writing in! Your balance appears to be the S395-32 with a winged top and a non-winged bottom. The length of the metal channel on this balance is 32".

You'll need to select the 3130 stamp option.

Handy Person from Surprise Arizona

Nov 12, 2023 3:31 pm

Thank you for the response. I have another window, larger than the others. I need to get the number for 2 balance springs. They are stamped. 34 4 GW CMC 11. The metal piece is 35" long. The plastic ends are identical to the first two windows balance springs. I also would need one metal clip that holds them on place when removing the window.
Thanks
Bill

5 user uploaded images

Jasmine from SWISCO

Nov 13, 2023 9:22 am

Hello,

Since the balances have the same attachments, you'll need to the same style balance. With that said, you'll need the S395-35 with a 3440 stamp.

The metal piece that holds them in place is referred to as the take out clip. This is part 16-002.