I would like to keep a variety of size and length screws, rather than having to go out or order when I am doing a job. I am only a DIY'er and don't use that many to warrant 100/200 boxes. To this end I found a site "CheapScrews" that can supply me with say 4/4.5/5 in 40/50/70mm in small volumes of 50. They alsosupply Fischer Duo Plugs in small quantities too. They mainly sell Timco screws but after reading that certain screws can tear raw plugs, I need some advice as to whether I can keep screws that will double up as wood-wood and say hanging a cabinet to masonry. Rather than a selection of screws dedicated to certain functions. Can you please advise.