Can we have an opposite version, for very short-lived components? I once killed a new UN52 BB in 70 miles and a set of Kool-Stop green (ceramic) V-brake pads in 30 miles - new ceramic rims can be very rough, just like sandpaper. A rather natty set of carbon-effect SKS mudguards cracked right across the width of the rear one in three months. Shimano 105 threaded headsets used to last me about 500 miles before they got irretrievably "indexed".
Not on my bike, but Miche track hub locknuts are notorious for splitting in two when the wheel is fitted; they are quite brittle steel and the serrations are too sharp, causing stress raisers. Imagine that happening if you were fixing a puncture out on the road! Fortunately, when this happened on a friend's fixie less than 100 miles from new, we were just tensioning the chain at my house and my Crypt of Crap turned up a couple of generic M10 locknuts and some thin spacers to replace them.