I've been doing a thread for my
Trash Day Kuwahara, but I thought I'd add a post here for a weird little piece of hardware I found. I'm making a touring rig out of this free 80's mtb, but the rack and fender mounts are all M6. I'm using some old Vetta racks, which really don't look like they need to lose any material around the mounting holes, so I found these step studs online. They go from M6 to M5 (which the racks are drilled for), with an unthreaded bit in between. Available in a few lengths. Rust could be a problem, but I'll just slather them in grease.