Why not take the Grado down to Lowes/HD and buy the size you need and make sure there brass. I am sure their is a vinyl nut at your big box hardware store?
I agree head down to the local hardware store and play around until one fits.The ones comeing are nothing special just metal wood screws.They are heavy.Brass would be alot prettier.
You must have a verified phone number and physical address in order to post in the Audiogon Forums. Please return to Audiogon.com and complete this step. If you have any questions please contact Support.