Anti-corrosion protection: zinc electroplated coating. You will get answer in 30 minutes. If You don't live in Great Britain.
M10 / 10mm HEX HEXAGON HEAD WOOD SCREW COACH SCREWS BOLTS ZINC PLATED ALL LENGTH
HEX HEXAGON HEAD WOOD SCREW COACH SCREWS BOLTS ZINC PLATED ALL LENGTH
M8 / 8mm HEX HEXAGON HEAD WOOD SCREW COACH SCREWS BOLTS ZINC PLATED ALL LENGTH
M8 A2 Stainless Coach Screw Hex Hexagon Head Wood Screws Lag Bolt 8mm DIN 571 by MultiScrew - Corrosion Resistant (10, M8 x 90mm)
M5 M6 M8 Hex Hexagon Head Bolts Set Screws A2 Stainless Steel DIN933 Full Thread
