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Countersinks

For Din 7991 Socket Countersunk Bolts use the following sizes;

M3 6.3mm, M4 8.3mm, M5 10.4mm, M6 12.4mm, M8 16.5mm, M10 20.5mm, M12 25.0mm, M14 28.0mm, M16 31.0mm

For Countersunk Fixing to the following Din number; Din 963, Din 964, Din 965, Din 966, Din 7513 F.u.G, Din 7516 D.u.E. use the following Countersinks;

M2.5 5.0mm, M3 6.0mm, M3.5 7.0mm, M4 8.0mm, M5 10.0mm, M6 11.5mm, M8 15.0mm, M10 19.0mm, M12 23.0mm, M14 26.0mm, M16 30.0mm.