Installing cleats

[snapshotmd]

I have a 16ft aluminum flatbottom boat. I want to install cleats to tie the boat up to the dock. I'd like to know if I could just use self tapping screws, or if I need to back it with washers. I would like to avoid backing the cleats because the underside where I want to put the cleats are enclosed. Access into these areas would mean removing rivets.

 

[gcboat]

Re: Installing cleats

I really don't think a sheet metal screw would do the trick for you. A backing plate and bolts would be the most secure way. My $.02

 

[Mr. Ross]

Re: Installing cleats

There are special fasteners for marine application that don't require access yet do provide backing. I can't remember the name, it's been awhile since I used them but most marinas carry the thing.

 

[mike343]

Re: Installing cleats

If there is no way to get to the backside, I'd suggest mollys (or whatever they are called) unless you are in salt water or can find stainless units--I couldn't when I installed spring cleats but I only do fresh water and have had no problems.

 

[jay_merrill]

Re: Installing cleats

Some sort of backing is just about a requirement for a cleat. Don't waste your time using screws - they won't hold under any appreciable amount of stress. I also wouldn't use anything but stainless, no matter your boating environment.

 

[snapshotmd]

Re: Installing cleats

Do you think rivet nuts would work?

http://www.mcmaster.com/#rivet-nuts/=2dag8k

This would prevent the threads from being ripped out. I'm wondering if the anchored area is wide enough to prevent rip out. But then again, it's a light boat.

What do you all think?

 

[Bob_VT]

Re: Installing cleats

No. You need a backing plate or bolt through.