this is a long shot. i have an old sme 309 tone arm. the headshell attaches to the tone arm with a bolt and nut to clamp it down. i changed cartridges but lost the bold/nut. anyone know where i can get a replacement the sme website doesn’t offer it. its over $300 for a replacement headshell. don’t want to spend that much just to get a new bolt/nut. the other alternative is to go to a hardware store and see if they have something that will work.