Bi-Fold Door Top Pivot Bracket

Looking for pivot bracket hardware for old bifold door.

Looking for part that goes above pivot bracket for bifold doors that 6mm screw fastens into to hold bracket in place in track. Thanks

I'm trying to fix 2 Acme bi-fold doors. The top track has a piece that holds the top of the door in place and has a set screw that locks the piece in place. Both doors are missing this important piece. I've been unable to find a replacement screw at all the hardware stores around me. ... (cont.)

I am looking for the top of door hardware for a bi-field door that goes with the bi-fold door bracket pictured above. Stanley 2819 or you're pictured 23-306. Mostly the traveler round plastic wheel that fits in the track.

Good day,I need to replace this bifold door upper pivot pin bracket (the securing screw gets loose and causes the door to drop). The door is in a house built ~1980, and the item has an "Acme" marking in it. I included a picture of the rail width, which appears is 1/2".I have no other manufacturer ... (cont.)