Looking for small Hex Head/Slot Head screw that goes in the Stepdown Autolite distributor

Hi,
I'm looking for the small hex head screw that holds the points and condensor conductors together. It's the one that's so close to the side of the distributor housing that people end up rounding off the flats when they try to turn the screw.
Is this a common easy to find screw?  Thanks for any leads on getting one.
Rob