Spiral Tip Window Balance

A home owner from Illinois, USA says:
I am ready to order a 29 inch spiral tip window balance.
Part S600-29.
My current windows have a black plastic part at the top of the balance.
the balance is inserted into this black part and all held together with one screw.

I dont see this part on your website.

I have attached pictures. One is a picture from a window with no issues.
The other two pictures are of the part. Mine is cracked.
Do you have this part? Is it needed?
Thumbnail of the uploaded file named 20220816_115000.jpg
Thumbnail of the uploaded file named 20220816_115146.jpg
Thumbnail of the uploaded file named 20220816_115125.jpg
Profile picture of Tom
Tom from SWISCO responded:

Hello! This looks like the old Acorn stop. See our 55-063. I believe this is just the part you were looking for, but let me know if you had any questions.

A home owner from Illinois, USA says:
Thanks. That looks correct. One other follow up question.
I assume I should order the pivot shoe that is the same size as the spiral tilt window balance. I am ordering the 29inch S600-29. I think the matching show is the 15-118. Correct?
Profile picture of Tom
Tom from SWISCO responded:

The Series 600 is compatible with many, many different pivot shoes. The 15-118 is one of them, but there are others. 

Like you said, though, you want something that's the same size as the original. You also have to make sure that the center cam takes the same size/style of pivot bar.

How to replace a tilt window spiral balance.
How to replace a tilt window spiral balance.
VIDEO
WATCH >
How to Identify a Replacement Spiral Balance
How to Identify a Replacement Spiral Balance
VIDEO
WATCH >
How to Remove a Pivot Shoe (Cutout Method)
How to Remove a Pivot Shoe (Cutout Method)
VIDEO
WATCH >
How to remove window pivot shoes
How to remove window pivot shoes
VIDEO
WATCH >
Anatomy of a tilt window
Anatomy of a tilt window
VIDEO
WATCH >
How to choose the proper spiral balance tip color
How to choose the proper spiral balance tip color
GUIDE
READ >
How to adjust a spiral balance on a tilt window
How to adjust a spiral balance on a tilt window
GUIDE
READ >
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 3-4 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at (888) 991-1929 or at help@swisco.com.