Need screen corners and pins matched

Hi,
My windows are about 15 years old. They are the original builder's grade and the plastic corners and pins have gotten extremely brittle, so I am looking to replace them all since the screens are also wearing out and I can't replace the material without breaking the corners. Unfortunately I do not know the brand.

I have attached photos with measurements. I also included a picture of the end of the screen rail so you can see what the corners go into since the hole is rectangular with an extra slot sticking out of one corner.


Thank You,

Perry

Also, as far as the pins, I included pics so you can see what I have. I am ALSO looking to at replace them with at least this quality of pin, but if you think the spring loaded ones would work, I'd be interested in that to, so I am looking for some guidance on the pins.