What are you talking about? There's no fairlead at the masthead. What would it even be for?
(You don't have an "M" rig & sail, do you...?)
Post pictures. Of all parts of your boat, especially the sail(s). What's the number under the bow eye?
perfect - thanks!Should be the same type, size and thread as the cleat (Figure 5). You can unscrew one of those and take it to a hardware store to find similar one. Should be stainless steel. The one you take out of the cleat, make sure to use 4200/5200 when you replace it.