Window Balance Replacement Parts

I recently had a window balance pop loose from the sash. I have Milgard, single hung, non-tilt windows. When I removed the balance I noticed that the top portion was damaged (parts of the catch area were chipped off and it was missing the spacer on one side). The top sash guide was also heavily damaged, as you can see.
The top sash guide appears to be 5/8" and looks similar to this product: https://www.swisco.com/5-8-Top/pd/Top-Sash-Channel-Balance-Guides/18-188 though the measurements of all the other dimensions are all slightly off (1/8" or less), but I was unsure if that was an exact match or close enough that it would suffice.
As far as the top, plastic portion of the balance itself, I was having a harder time determining how to size it properly. It is 9/16" wide, 1 1/4" length and 11/16" deep.
I was also unsure of the rivet size needed to re-affix the top portion. Are those fairly standard?
A photo of the balance stamp is also included to help narrow it down. It's a 27" balance, if that matters in the above cases.
Thanks for your help and time,
Joe



Hi there, Joe. I do agree with you in going with our 18-188 top sash guide as a replacement. As for the channel balance, we need to see the other side of the balance to take a look at the other balance shoe in order to decide what balance could be used as a replacement. Send that over and we will go from there.

Thanks for your response. Attached are the photos you requested.
-joe



Thank you! This looks like a special kind of balance that will have to be custom made. Thanks to these pictures, we can definitely make it, but we will need to know how many you need. Once I know that, I'll email you an order link and price quote.

thanks again,
joe



Hey, Joe. To clarify, when you say you only need one of the top pieces, do you mean the top nylon cap on your balance? If so, that'd be our 19-005. We even have a video that shows you how to replace it, which I'll post below. These aren't a special order, you can buy these directly from our site whenever you wish.

That is correct. I just need the cap that will catch the window's top sash guide. That piece you linked seems to fit the bill. Thankfully the bottom guide is undamaged. I think with that new piece you suggested I'll be all set. The only remaining question i have is, is there a specific rivet i should use based on the balance i have?
thanks!
joe
