You are reading a single comment by @O'Shane and its replies.
Click here to read the full conversation.
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
@O'Shane
Sorry, what? No. They're not.
You get what are crudely known as "coarse" and "fine" pitch threads. Depending on the girth of the bolt coarse and fine are different sizes. A coarse M10 bolt has a pitch of 1.5mm. What most would call a fine M10 has a pitch of 1.25mm. Derailleur hangers use an M10 by 1mm pitch. On the other hand a coarse M6 - M8 bolt will have a pitch of 1.25mm. A fine will be 1mm. From M7 down you can get them with a pitch of 0.75mm