Counterbored Holes Dimensions (metric) 

METRIC SOCKET-HEAD CAP SCREWS

SCREW DIA

COUNTERBORE DIA

COUNTERBORE DEPTH

COUNTERSINK DIA

CLEARANCE DIA (NORMAL FIT)

CLEARANCE DIA (CLOSE FIT)

M1,6

3,50mm

1,6mm

2,0mm

1,95mm

1,80mm

M2

4,40mm

2mm

2,6mm

2,40mm

2,20mm

M2,5

5,40mm

2,5mm

3,1mm

3,00mm

2,70mm

M3

6,50mm

3mm

3,6mm

3,70mm

3,40mm

M4

8,25mm

4mm

4,7mm

4,80mm

4,40mm

M5

9,75mm

5mm

5,7mm

5,80mm

5,40mm

M6

11,20mm

6mm

6,8mm

6,80mm

6,40mm

M8

14,50mm

8mm

9,2mm

8,80mm

8,40mm

M10

17,50mm

10mm

11,2mm

10,80mm

10,50mm

M12

19,50mm

12mm

14,2mm

13,00mm

12,50mm

M14

22,50mm

14mm

16,2mm

15,00mm

14,50mm

M16

25,50mm

16mm

18,2mm

17,00mm

16,50mm

M20

31,50mm

20mm

22,4mm

21,00mm

20,50mm

M24

37,50mm

24mm

26,4mm

25,00mm

24,50mm

M30

47,50mm

30mm

33,4mm

31,50mm

31,00mm

M36

56,50mm

36mm

39,4mm

37,50mm

37,00mm

M42

66,00mm

42mm

45,6mm

44,00mm

43,00mm

M48

75,00mm

28mm

52,6mm

50,00mm

49,00mm

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