Coil spring pivot lock shoe

A quick learner from Pennsylvania says:
I need a dozen of these items
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Tom from SWISCO responded:

I'm not sure if we can supply this hardware. Your balance assembly looks very large. Before we recommend anything, can you confirm the thickness of both the spring and shoe? 

A quick learner from Pennsylvania says:
It's 1&1/4 across the working face ( pivot face) and 7/8" deep. It's 1& 3/8 tall with tabs included.
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Tom from SWISCO responded:

Thanks! We unfortunately don't sell a replacement shoe that's as big as the hardware you show here. I don't believe it's made anymore; I'm basing that on the fact that we did sell a skinnier version of this same design, but that itself was discontinued not long ago. If one is obsolete, reason dictates that the other is, as well.

We don't have a lot of alternatives for you. Out of all the products in our inventory I would say that the best option is the Certainteed brand 15-192. This is designed to be compatible with the Series 170 spring, 15-156 cover, and 15-157 bushing. I cannot guarantee that these parts will work for you but they may be worth considering at least.

Please the information we show on each product's respective store page and see what you think.

SWISCO S170 and S171 Coil Balance Assembly
SWISCO S170 and S171 Coil Balance Assembly
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