need to find replacement part

I have these in the bottom of every window in my home. They keep the window in the frame and the window will articulate as well (it will hinge on these pins). There are zero markings on these pins. They are metal. That's about all I know. The longest dimension (length) is 2-11/16 (including the pin) (the pin accounts for 3/8) / width is 5/8 (pin is 5/16) / the thickness of the unit is about 3/8