Hexagon socket countersunk head screws SSL4008070 DIN 7991 SK SCREW FULL M8 X 70 A4-80 SSL4008120 DIN 7991 SK SCREW FULL M8 X 120 A4-80 SSL4012120 DIN 7991 SK SCREW FULL M12 X 120 A4-80 These bolts need to be with the full threads. Also there needs to be the "A4-80" stamp on the head. Demand would be around 500-1000 pcs each size.