Bolt + Nut M4 x 20mm Hex-Head Machine-Screws + Lock Nuts by Optiparts
The only perfect rudder fittings for the Optimist. Used on all top racing Optimists. Pin diameter 6 mm. (According to I.O.D.A. class rules) These stainless steel rudder fittings are available as a set or separate. Included in the set are pintles, gudgeons, backing plates and a rudder retaining clip. For blades up to 15 mm thick.