All my old carbs get stainless socket head, from McMaster-Carr. I don't care about authenticity, and I hate those damn doomed not-phillips cheddar cheese JIS things (yes, OF COURSE I have the correct screwdrivers; these screws just ****).
If you do care about such things, Belmetric doesn't have the JIS float bowl screws, but you can find them from other sources, for example:
M4 x 14mm - Yellow zinc plated pan head JIS Screw with lock washer Equivalent to: Honda Part no: 93892-04014, 93892-04014-0H, 93892-04014-1H, 93892-04014-1H & 93892-04014-18 Kawasaki Part no: 223AA0414 Our yellow zinc plating matches OEM parts exactly. We've sourced what we believe to be some...
www.kmcarburetor.com