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CONNECT VOLUME I STANDARDIZATION 7 8 Metric hexagon or hexalobular socket small screws and bolts German product standards such as DIN 6912 or DIN 7984 continue to apply So far successor ISO standards for these standards do not exist However DIN 7991 was replaced by ISO 10642 Please note that for these countersunk screws the countersink is designed according to DIN 74 type F Furthermore screws with hexalobular socket TX were launched in past years A DIN standard for these screws did not exist Head design corresponds to the crossrecessed drive screw heads which are identical in shape Name DIN DIN standard withdrawn ISO Exchangeable Comments changes yes to a limited extent no Hexagon socket head cap screws with centre with low head 6912 no – – – – • DIN applies • Minimum breaking forces for stainless steel added • Nonferrous metals canceled Hexagon socket head cap screws with low head 7984 no – – – – • DIN applies • Minimum breaking forces for stainless steel added • Nonferrous metals canceled Hexagon socket button head screw – – 7380 Part 1 – – – • No previous DIN standard Hexagon socket button head screws with collar – – 7380 Part 2 – – – • No previous DIN standard Hexagon socket countersunk head screw 7991 yes 10642 – X – • Head height and diameter partially changed see table 4 • Nominal diameters M18 M22 M24 canceled • Strength classes 10 9 and 12 9 added Hexalobular socket cheese head screws – – 14580 – – – • No previous DIN standard Hexalobular socket countersunk head screw – – 14581 – –– – • No previous DIN standard • Head dimensions correspond with ISO 7046 see table 4 Hexalobular socket pan head screws – – 14583 – – – • No previous DIN standard • Head dimensions correspond to ISO 7045 see table 4 Hexalobular socket raised countersunk head screws – – 14584 – – – • No previous DIN standard • Head dimensions correspond with ISO 7045 see table 4 Table 3 Hexagon and hexalobular socket small screws and bolts