UNF is the most commonly used and preferred thread for general purpose inch gaging. Because of the inherent coarse pitch, the threads are deeper than fine threads and are easier to assemble without cross threading.
We deal with UNCfsocket cap screws they are the different thread than alternative socket cap machine fasteners or the standard Hexagon headed bolt and set screw.
UNF socket cap screws are Hex screws or Hex bolts and they also called Allen screws and Allen bolts.
We have UNF socket cap screws A2 Stainless steel.
We have different dimensions of UNC socket cap screws like 8 UNF and in 8 UNF we have different sizes like 1/4'' 5/16'' 3/8'' and so on.