When I was a younger pup and just starting my own shop, one of the suppliers reps stopped in with a deal on 3 1/2" screws. Real cheap. Just what we used for hanging cabinets. Had to buy a 40# keg though. Turned out to be worthless. No amount of pilot boring would keep those phillips heads from stripping out. Never saw such soft steel. Could have been white brass, they were so bad. I finally gave them to a friend who was framing a house. They became helical-shanked X-head framing nails.
Wouldn't work today since carpenters all travel with compressors, hoses, and guns. Rarely pick up a hammer, it seems.