Please offer and delivery time for: 1 - Studs DIN 2510 L Hexagon nuts DIN 2510 NF Including certificate 3.1 EN 10204 (suitable for flange gasket for data sheet 350°C 13bar) Details in the attachment 1 2- Washers DIN 125 Hexagon nutsDIN 934 Hexagon head screws DIN 931/933 Including manufacturer's label according to AD2000 W7; as a substitute for APZ 3.1 Details in the attachment 2