We have discovered that some brackets were attached to the mast with 1/4-20 fasteners, others used 1/4-28. It is very important you use the same thread pitch originally used in your mast. Failure to do so will result in the tapped threads in the mast being ruined. For this reason, we no longer include fasteners. We suggest you re-use your old fasteners. If they are too corroded to re-use, take them with you to purchase fasteners with a matching thread pitch.