Wood and sheet metal screws require pilot holes.
Attaching wood to aluminum boat.
Bolt the wood to the metal frame by pre cutting holes so the bolts fit through.
Bonus content at the end of the vi.
They can also be used to efficiently fasten metal to other materials such as wood or plastic by creating a much stronger bond than a regular nail.
If you use the wrong kind of screws to fasten aluminum base metal however you may set in motion a chemical reaction that will quickly damage the aluminum.
Drilling the guide holes is done to slide the bolts on the wood into the metal frame.
Short ish video comparing how well or poorly four different common adhesives bond aluminum to wood specifically maple.
Note that tensile loads on screws place shear loads on the threads so in soft material like aluminum you ll generally get greater holding power with thicker i e coarser threads.
Taking the quick and easy way out by just ramming in a few screws through a cored structure can and does cause thousands of dollars of unexpected damage.
You can use bolts that are made specifically to screw wood to metal or steel if you re attaching a wood flush.
Bolts need to be threaded completely.
For example select 1 4 20 rather than 1 4 28 screws for mounting hardware to a mast.
Attaching plywood to aluminum post by bassboy72 02 mar 2012 23 44 i am looking to attach some plywood to the top of my bench seats to then in turn attach boxes i have made to raise the height of my swivel boat seat.
You either take the time to do it right or pay the price when it comes time to sell your boat.
Self tapping screws also called sheet metal screws are very versatile.