Slotted set screw with flat point DIN 551 Brass: M1.2 x 1.5 Slotted Countersunk Head Screw Brass DIN 963: M1.4 x 4 Torx Countersunk Screw Brass: M2 x 4 Slotted head screw DIN 84 Brass: M2.5 x 8 M2.5 x 12 The brass is required because it needs to be non-magnetic. For project we need the minimum quantity