Screw length recommendations for mounting to internal trailer walls? External walls?
In a bizarre twist, Dutchmen provided us with a 2-piece toilet paper roll dispenser in the same bag as the owner's manual... but no screws to mount the two brackets on the wall somewhere handy to the toilet. The spring-loaded T-paper roll holder goes between them - you know what I mean.
There's nothing complex here, except that I was hoping they'd provide the screws needed to give me some idea of how long of screws to use in trailer walls (2017 Aerolite 242 in my case). Nope. I'm on my own. Plus, there are a few other hooks, gadgets and doodads which need to be mounted to the walls, and screws are the only fastening system that makes sense to me. But which screws? What is behind the veneer on these walls?
I'm guessing that either half-inch or 5/8" #8 screws will be OK, depending on how thick the mounting surface is on the whatsit to be installed. So can somebody tell me, will about 1/2 inch of screw threads into the wall suffice? Is more needed or useful? I'm picturing 1/4 inch plywood behind the veneer, and if I'm right, anything that pokes through into the hollow space in the middle is pretty much wasted, as far as extra holding strength is concerned.
And, in a related question, what is "too long" when it comes to the threaded part inside the wall? Obviously I don't want to poke out through the other side of the wall. They appear to be about 2" thick... or 1.5" thick. It's hard to tell, so I'm also hoping for any info you all have on the shortest useful length, and the maximum length one should ever use, if one is strapped for screws and needs to attach something with, say, a 3/4 or 1" screw. Would that be OK?
I have a bunch of 3/4" drywall screws which are very sharp and work great for many applications like this... if a beveled head is suitable. For pan-head phillips, I normally drill a small pilot hole, but the drywall screws are their own drill, making them super handy where applicable.
Thanks in advance!
2017 Dutchmen Aerolite 242BHSL "Cabin in the woods"
2016 Ford F250 Superduty 6.2L Gas
55' Sea Ray "cabin on the beach" Coronado CA
Quote... "Give me ambivalence or give me something else."