SWISCO - The Replacement Hardware Authority

coil balance window parts

A contractor from Mchenry IL says:
I need a repair kit for single hung vinyl windows.These parts match Bumper #15-148,Piviot shoe #15-111
The 1/2" Coil standard supports measure the same but look a little different.Your #15-150 all I have is a patent #om137 Each window has 4 supports & 4 coil springs. The sash size is app.36"x36" the coils are in many peices I dont know what I need.
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Paul from SWISCO responded:
Thanks for posting. To help us identify your coils, can you please take a few pictures of them? We will need to see what their printed stamp says.
A contractor from Mchenry IL says:
Tom, It took me till now to get the window weight it is 18lb. The windows require 4 springs each 2 per. side. I took a new picture of the spring.

Thank you

User submitted picture of coil balance end.
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Tom from SWISCO responded:
Thanks for getting back to us, Steve. Unfortunately, I can't see what your stamp is. Is there any way you can tell us what the stamp printed on the coil is?
A quick learner from McHenry IL says:
I found some numbers. First coil the one in the last pic. is 5 31" T5-32, second coil is PAT. 54875. They are worn down I hope this helps.
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Paul from SWISCO responded:
Take a look at our S160-5 coil spring. Does that look to be about right? Let me know what you think!
A contractor from McHenry IL says:
I thought this is the part. My concern is using two coils per side the travel and the weight. I have 6 to repair. I can not find the manufacture.

What size coil do you think I should use? I don't know how to calculate what I need. Send me the part number what you think and I will make it work.

PS. the coil is 1/2" wide and if the travel is 31" it should work.I just don't want to be short and the window won't close.
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Paul from SWISCO responded:
The travel of our S160-5 is actually 35", not 31". Would that be better for you? I think that spring would be your best bet, but you're going to have to confirm for yourself based on the information shown for that spring.
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