Need new channel springs and window clips

Thanks for posting. From your photos it appears the attachments or fittings at both ends of the metal channel lack 'wings', or side tabs. That said, it looks as if the bottom fitting is damaged, so you may want to check the other balance from this window, or from an identical window in the house, to confirm.

Diagram on how to choose between the 15-001, 15-002, 15-004, and 15-005 channel balance shoes.

If the balance indeed lacks wings, then this is either an S351-29 or S390-29. The only difference between these two channel balances is the depth of the bottom nylon shoe, or the measurement from heel-to-toe. See the illustration below for reference. Compare both balances with your old hardware to see what matches best. In either case for a stamp option go with 2840.

Comparison of the S351 and S390 balance shoes.

Finally, your take-out clip might be our 16-002; but I recommend checking another window in the house that still has the clips just to be safe. Let me know if you have further questions.