If your frame utilizes removable brake mounts, you need to be sure you are using the correct type. In general, there are two types of removable mounts; one-piece where the mount itself is threaded, or two-piece where a bolt goes through the mount and threads into the frame. Within these types, multiple thread pitch sizes have been used over the years, so be sure to find the right kind. We have a chart below of what is commonly used for each brand, but this is not a guarantee as brands have changed what they use over the years.