Best Blind Bolts for a deck fitting

[Snowgoose-1]

Any experiences ?

No access unfortunately. Largely shear loading.

Need to be 4 x M8 stainless.

I would need a bit more backing than a Rivnut fitting.

TIA

 

[Boathook]

Is the deck solid or with some sort of core plus how thick ?

Could make a pad bigger than the fitting so that the load can be spread over more fixings.

 

[Snowgoose-1]

Thanks for the reply.
The deck is double skinned but not filled with either balsa or foam. Just air .

About an inch between them. Great for taming condensation and keeping things warm but not very practical.

Good point. Make a plate , fixed on deck and add more bolts to spread the load. I have some stainless that might do.