Hexagon head bolts: DIN931 or 933 M30x100 8.8 ZN 4000 kg DIN931 or 933 M30x130 8.8 ZN 5000 kg DIN931 or 933 M30x150 8.8 ZN 400 kg DIN931 or 933 M36x130 8.8 ZN 650 kg