Inquiry as per file in attachment Hexagon head screws, partially threaded DIN 931 Hexagon head screws, fully threaded DIN 933 Self-locking hexagon thin nuts with non-metallic insert DIN 985 Threaded bars DIN 975 Carriage bolts square neck DIN 603 Tapping screws, slotted pan head DIN 1481 Cross recessed countersunk flat head screws DIN 965