Looking for a picture of the mast pins for a Hunter 25.5. I searched the store but what came up doesn't look like the right thing. I'm assuming they are pins that go all the way across the mast base? 
mast pins for 1985 Hunter 25.5
- Thread starter Submarine
- Start date
It looks like a Dwyer mast base. You may be able to order them thru this website. If not, try Dwyer Aluminum Mast Company at approximately $11.50 each. Don't forget to order cotter pins.
Your mast is a Kenyon Isomat, not dwyer. Call Rigrite. However you could measure the size of a hole and purchase long stainless steel bolts from West Marine or better yet, Fastenal. YOu could put a nylon nut on the threaded end. I would make sure the bolt is long enough that there are no threaded portion traversing thru until it goes all the way thru
OK so a grade 8 bolt is OK. The store here says a Clevis pin either 5/16" or 1/4". I'll have to stop by my storage and measure the hole and length. I will be trailering this so the mast will be coming down often, might be better to do a clevis pin than a bolt. I'm surprised the mounting surface is so thin.