8-32 thread x 3/8" long replacement screw & washer set for vintage Gretsch lugs. The washer is 3/4" diameter and hex head uses a 5/16" socket.

Most of the original Gretsch lugs used a self-tapping screw. The screws I offer here are standard screws, so your lugs will have to have originally had self-tapping screws in them otherwise you will need to run a #8-32 tap into them to cut and/or clean up the threads.