draughtsman.co.uk       

 
 
 

      

   

   clearance holes for metric bolts

   

   

 

THREAD

CLEARANCE HOLE

CLOSE FIT

MEDIUM FIT

FREE FIT

M1.6
1.7
1.8
2.0
M2
2.2
2.4
2.6
M2.5
2.7
2.9
3.1
M3
3.2
3.4
3.6
M4
4.3
4.5
4.8
M5
5.3
5.5
5.8
M6
6.4
6.6
7.0
M7
7.4
7.6
8.0
M8
8.4
9.0
10.0
M10
10.5
11.0
12.0
M12
13.0
14.0
15.0
M14
15.0
16.0
17.0
M16
17.0
18.0
19.0
M18
19.0
20.0
21.0
M20
21.0
22.0
24.0
M22
23.0
24.0
26.0
M24
25.0
26.0
28.0
M27
28.0
30.0
32.0
M30
31.0
33.0
35.0
M33
34.0
36.0
38.0
M36
37.0
39.0
42.0
M39
40.0
42.0
45.0
M42
43.0
45.0
48.0
M45
46.0
48.0
50.0
M48
50.0
52.0
54.0
M52
54.0
56.0
58.0

- top of page -

 

   

          
 
 
 

    draughtsman.co.uk