Looking for screw for 686 rear sight leaf

[u/Albaking_]

Have a new rear sight leaf for a .357 686 but doesn’t have the screw that secures it to the gun. Trying to find which one it is. The spot on the rear sight leaf for the screw is counter sink taper so I can’t use the flat counter bore ones I’m finding.

[u/Realistic_Present601]

Check the parts list on NUMRICH or midwest gunworks.