I have many PGT Industries sliding patio doors which were installed new in 1988. I am in need of the roller sets for a couple of the doors. (2 for each door) I have found many online but they differ from mine in that the dimension between the end mounting 1/4-20 mounting hole and the adjusting screw on my rollers is 5/8"and I can find only rollers with 7/16" for that dimension.
My other dimensions are 11/16" wide, 3" long(not including roller) and 1" tall (also not including the rollers)
My roller has a single 1/4"-20 mounting screw on the end. It generally appears to be about the same shape and size of your 81-163 SS assembly. my roller is not stainless and I don't need stainless as long as I can get good quality sealed ball bearing type steel wheels.
Thank you,
DaveĀ