This International Standard specifies the characteristics of heat-treated steel tapping screws, with tapping screw thread from ST2,2 to ST9,5 inclusive according to ISO 1478, together with the corresponding test methods.
ISO 2702:2011 Referenced Document
ISO 6507-1 Metallic materials — Vickers hardness test — Part 1: Test method*, 2023-08-01 Update
ISO 898-7:1992 Mechanical properties of fasteners; part 7: torsional test and minimum torques for bolts and screws with nominal diameters 1 mm to 10 mm