AN525-416R12 Screws

My 5th Gen Cruzer uses 8 of these inside the gear channel (2 forward and 2 aft on each side) to hold the Gear Strut Fittings to the front and rear of the Gear Channel.  The first two I tried to tighten stripped at the phillips head.  Searching the EAA build logs I found this...


"[AN525-416R12s] have a special Phillips like head, a Reed Prince Frearson head, otherwise the screw heads will strip with a conventional Phillips head."

Has anyone else ever heard of these Frearson head screws? Is this something that I should have known?  Where do you get a driver for one?

Along the same topic, has anyone replaced these screws with something else?

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Permalink Reply by Ken Ryan on Tuesday

West Marine has R&P Frearson driver bits.

Permalink Reply by Tony Renshaw on Tuesday

These screws used to be bolts, and I am in the construction phase with the bolts installed, now wondering if I will have a problem if I leave them in versus replacing them. The dynamics of the changes in the kits flummoxes me and for known shortcomings that don't get circulated, resulting in problems where builders don't know better. This sucks. The screws no doubt have a lower head profile, but are also problematic to tighten as you're finding out, especially when the width of the gear channel is only about 5 or 6". I have not checked but am thinking of checking out the gear leg, enough of a precedent has been set with the notching for the gear bolts, what will a small rebate for a bolt head matter.....at least this way you can get it tight. This could be an avenue you could explore and or I can circulate my findings on this idea. Like I said, sucks to not know why the changes in the design and parts supplied.

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