In the US the best option (although expensive) is products from Fasten Master. For ledger bolts, their LedgerLok product is far superior to the alternatives an

In the US the best option (although expensive) is products from Fasten Master. For ledger bolts, their LedgerLok product is far superior to the alternatives and their TimberLok product is a /structural/ wood screw. My family is in construction and I called my dad up after snapping the heads off too many torx drive deck screws and he suggested these. I’ve /NEVER/ broken one and I exclusively use a 20V impact driver on max when driving fasteners. GRK is my preferred second choice and I find it better than Grip-Rite, DeckMate, or Spax. Another thing is that construction screws are usually more durable than deck screws, anymore, as deck screws are generally ceramic now to prevent corrosion but weaker shaft strength. All of these brands are available at any home store in the US pretty much.