You might want to download the instructions for the KTS1 stand. Looking at my parts inventory sheet for my KTS1, it looks like its a 10-32 1/2 inch long. 73 Barry K8QI -- View this message in context: http://elecraft.365791.n2.nabble.com/K1-Stand-Screw-Size-tp7499280p7500658.html Sent from the Elecraft mailing list archive at Nabble.com.