Dimensions of Holes for Hexagon Socket Cap Screws with Special Low Profile

Bore and bolt hole diameters for hex socket head cap screw with Special Low Profile

Unit : mm

Nominal diameter
of thread(d) 
M2  M2.5  M3  M4  M5  M6  M8  M10 
d′   2.4 2.9 3.4 4.5   5.5   6.6   9 11
dk  4 5 6 8   9 10 13 16
5 6 7 9 10 11 14.5 17.5
K 1.1 1.3 1.3 1.5     1.5   1.5   1.5   1.5
H 1.4 1.6 1.6 1.8     1.8   1.8   1.8   1.8



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