screw and hole mates needed

Dear all,

I am still not good at SW.  I tried very hard to put the screw assembly (screw and split washer) into a hole on plate as attached here, but still couldn't make it.  Can you anyone out there give me some hints on types  of mates that I need to create to insert the screw assembly into the hole?

Thank you so much for help in advance.

Kent

SolidworksAssemblies