Just the Spax, Ma'am
I love Spax screws. I bet I have ten different sizes and lengths of screws in my shop and I use them all the time for all sorts of things. My primary use is attaching the faceplate to a new chunk of wood to put it on my lathe. With my little impact driver I can put in six screws in about ten seconds and I am ready to turn
I went to the Spax website and checked out their history and would you believe 1823? The company started in Germany and has been in business all this time and is still very successful today. While you are there, take a look at the neat little games on their web site. There is a car racing game, a retail counter service game to see if you can sell enough screws fast enough to keep the customers happy (that's a new one on me), and a football game that is really a soccer game — they are German, remember?The secret to the screws is in the shape of the barrel of the screw and in the shape of the threads. The bottom threads are wavy with serrations which act like a miniature drill to cut right through most materials. The net result is effortless work without having to drill pilot holes first unless you are running them into masonry. That's right, the same screws work for mounting things to a masonry wall. And oh yes, the same screws work on sheet metal up to 24 gauge without pre-drilling. Are you getting the idea here? THESE THINGS JUST WORK.
Of course Highland has all the Spax screws you could want. Go try out an assortment to begin and then find the ones you really need on a regular basis.