A customer's sunroom has 6 double hung windows all with broken aluminum pins similar to your #26-412. The number cast into the original part is "1074". Im looking to see if there is a steel replacement. Thanks.
Tom from SWISCO responded:
May 29, 2019
Thank you for your patience during this busy season. I'm afraid we haven't been able to find an exact match for the 26-412 in steel. Our 26-083 is close, but I cannot confirm if it will work. It may be worth considering. I'm sorry we can't offer a better option.