Electro-polished AISI 316 stainless steel wood lag screw with swage terminal for short lengths of balustrading. AAA Metal Suppliers stocks both right hand and left hand threaded screws. Material hardness is controlled to ensure ease of swaging. Lag screws can be screwed into pre-drilled timber posts with a Lag Screw Spanner that slides over the flat of the Swage Terminal.