Need Replacement Part for part in the pic

Question

the plastic part of the window shoe in the image broke in half (you only see the part the remains screwed to the spring).
the spring has 407 J marked on this.
please let me know what if any further information you need - thank you!

Tom · Accepted Answer

Thank you for your patience during this incredibly busy season. I apologize for the long wait.

Looks like you have the old Simonton brand coil balance assembly. They no longer make this, but we have two possible solutions for you to consider.

The first is our 15-192 pivot shoe, along with our Series 170 coil spring (and other parts related to its store page). This is a Certainteed brand part but I have had customers in the past tell me that they got it to work after grinding down the front of the face, which sticks out just a little too far for this window. You may also need to reuse the center metal cam, since the new one may not fit with your existing pivot bar.

The other option is a more modern replacement that I think works just as well, if not better, since it's not prone to breaking in half like your old one is. The video below will go into more detail. This will explain exactly what parts you need to buy and how you can install them in your window. Just note that you will need the exact weight of your sash on hand in order to calculate the proper spring strength. You want to divide that weight by how many springs support the sash, then pick accordingly.