Dodge Ram Serpentine Belt Pulley Replace/Remove

Cannot Find Replacement Hardware (bolt, Spacer, And Dust Shield) For The Upper And Lower Idler Pulleys. Need Proper Bolt Specs... Pictures...

There Is A Bearing Noise That Has Developed At The A/c Compressor Pulley. It Seems To Happen And Stay Steady At All Rpms With The Ac On...