replacement part for casement screen

A contractor from Issaquah, WA says:
November 4, 2010
Hi, we have a customer with lip bar casement screens and the method of holding the screens in is a little metal tension spring (but NOT a leaf spring), and I'm not finding a source for it. Sue Beauvais
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Donna from SWISCO responded:
November 4, 2010
You might be looking for SWISCO product code 70-005, Wire Tension Spring. The top of the spring, angle portion, is what sticks out of the hollow screen frame. If this is not what you have been searching for, please send detailed images by attaching them to a reply post.
A contractor from Issaquah, WA says:
November 5, 2010
To Donna, the part you referenced is NOT what we are looking for.

It is a very small, very flat looking metal piece that provides a compression fit on a lip bar casement screen.

The customer thought they were 10 year old Milgard vinyl windows, but Milgard says they are not.

Thanks,
Sue
User photo of their lip bar casement screen tension spring.
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Paul Sr. from SWISCO responded:
November 8, 2010
I wonder if our 70-030 corner spring would work?
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Donna from SWISCO responded:
November 8, 2010
No, the 70-030, corner spring, is too bulky. The spring in the image Sue sent us is hardly adding any volume.
I currently cannot identify a replacement or substitute.
Sue, if you can send us another image of this spring removed from the screen, I would be happy to keep researching this for you.
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