Best stainless screws for wood?
Trying to figure out the best self-tapping screws for wood and particle board - it has to be STAINLESS dome head or hex head. Have already used sheet metal screws to install a solar panel. Will add...
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Dicor - yes, of course. On the roof under the solar panel bracket, AND on the screw head, AND lubricate the screw with Dicor before driving it in.
Why flat bottom of the head: because it holds a flat aluminum racket better. Deck screws I need to countersink, and some deck screws might have too long un-threaded section of shank. Sometimes there is a rafter under 3/8" particle board, and sometimes - no rafter.
PS: to what CA Traveler said - that with a countersunk screw it is easier to distort and loosen the mounting bracket - I will also add that it's easier to damage the bracket. At least, when you don't have much skills. You drill and drill that cone with an old primitive drill, the bit size is right, and then - ops - the countersink bit has almost went through aluminum plate, making the #10 hole a #12 :)
I think I'll go for "Serrated Thread Screws". Though this thread looks like what is called "high-low thread", not "serrated". 316 steel.
Why flat bottom of the head: because it holds a flat aluminum racket better. Deck screws I need to countersink, and some deck screws might have too long un-threaded section of shank. Sometimes there is a rafter under 3/8" particle board, and sometimes - no rafter.
PS: to what CA Traveler said - that with a countersunk screw it is easier to distort and loosen the mounting bracket - I will also add that it's easier to damage the bracket. At least, when you don't have much skills. You drill and drill that cone with an old primitive drill, the bit size is right, and then - ops - the countersink bit has almost went through aluminum plate, making the #10 hole a #12 :)
I think I'll go for "Serrated Thread Screws". Though this thread looks like what is called "high-low thread", not "serrated". 316 steel.
