Compared to standard threads, a fine thread has a smaller pitch which increases the resilience. It is used e.g. for adjusting screws in measuring instruments because it allows for finer settings. The term consists of the letter M, the nominal diameter and the pitch, the flank angle is 60°
|
Nominal Diameter mm
|
Pitch mm
|
Tapping Drill
Size mm
|
|
M 7.5
|
1.00
|
6.42
|
|
M 8.0
|
1.00
|
6.92
|
|
M 8.5
|
1.00
|
7.42
|
|
M 9.0
|
1.00
|
7.92
|
|
M 9.5
|
1.00
|
8.42
|
|
M 10.0
|
1.00
|
8.92
|
|
M 10.0
|
1.25
|
8.65
|
|
M 10.5
|
1.00
|
9.42
|
|
M 11.0
|
1.00
|
9.92
|
|
M 11.5
|
1.00
|
10.42
|
|
M 12.0
|
1.00
|
10.92
|
|
M 12.0
|
1.25
|
10.65
|
|
M 12.5
|
1.00
|
11.42
|
|
M 13.0
|
1.00
|
11.92
|
|
M 13.5
|
1.00
|
12.42
|
|
M 14.0
|
1.00
|
12.92
|
|
M 14.5
|
1.00
|
13.42
|
|
M 15.0
|
1.00
|
13.92
|
|
M 16.0
|
1.00
|
14.92
|
|
M 17.0
|
1.00
|
15.92
|
|
M 18.0
|
1.00
|
16.92
|
|
M 19.0
|
1.00
|
17.92
|
|
M 20.0
|
1.00
|
18.92
|
|
M 21.0
|
1.00
|
19.92
|
|
M 22.0
|
1.00
|
20.92
|
|
M 23.0
|
1.00
|
21.92
|
|
M 24.0
|
1.00
|
22.92
|
|
M 25.0
|
1.00
|
23.92
|
|
M 26.0
|
1.00
|
24.92
|
|
M 27.0
|
1.00
|
25.92
|
|
M 28.0
|
1.00
|
26.92
|
|
M 29.0
|
1.00
|
27.92
|
|
M 30.0
|
1.00
|
28.92
|
|
M 31.0
|
1.00
|
29.92
|
|
M 32.0
|
1.00
|
30.92
|
|
M 33.0
|
1.00
|
31.92
|
|
M 34.0
|
1.00
|
32.92
|
|
M 35.0
|
1.00
|
33.92
|
|
M 36.0
|
1.00
|
34.92
|
|
M 37.0
|
1.00
|
35.92
|
|
M 38.0
|
1.00
|
36.92
|
|
M 39.0
|
1.00
|
37.92
|
|
M 40.0
|
1.00
|
38.92
|
|
M 42.0
|
1.00
|
40.92
|
|
M 44.0
|
1.00
|
42.92
|
|
M 45.0
|
1.00
|
43.92
|
|
M 48.0
|
1.00
|
46.92
|
|
M 49.0
|
1.00
|
47.92
|
|
M 50.0
|
1.00
|
48.92
|
|
M 52.0
|
1.00
|
50.92
|
|
M 55.0
|
1.00
|
53.92
|
|
M 56.0
|
1.00
|
54.92
|
|
M 58.0
|
1.00
|
56.92
|
|
M 60.0
|
1.00
|
58.92
|
|
M 62.0
|
1.00
|
60.92
|
|
M 64.0
|
1.00
|
62.92
|
|
M 65.0
|
1.00
|
63.92
|
|
M 68.0
|
1.00
|
66.92
|
|
M 70.0
|
1.00
|
68.92
|
|
M 72.0
|
1.00
|
70.92
|
|
M 75.0
|
1.00
|
73.92
|
|
M 76.0
|
1.00
|
74.92
|
|
M 78.0
|
1.00
|
76.92
|
|
M 80.0
|
1.00
|
78.92
|
|
M 82.0
|
1.00
|
80.92
|
|
M 85.0
|
1.00
|
83.92
|
|
M 88.0
|
1.00
|
86.92
|
|
M 90.0
|
1.00
|
88.92
|
|
M 92.0
|
1.00
|
90.92
|
|
M 95.0
|
1.00
|
93.92
|
|
M 98.0
|
1.00
|
96.92
|
|
M 100.0
|
1.00
|
98.92
|
|
M 102.0
|
1.00
|
100.92
|
|
M 105.0
|
1.00
|
103.92
|
|
M 108.0
|
1.00
|
106.92
|
|
M 110.0
|
1.00
|
108.92
|
|
M 112.0
|
1.00
|
110.92
|
|
M 115.0
|
1.00
|
113.92
|
|
M 118.0
|
1.00
|
116.92
|
|
M 120.0
|
1.00
|
118.92
|
|
M 122.0
|
1.00
|
120.92
|
|
M 125.0
|
1.00
|
123.92
|
|
M 128.0
|
1.00
|
126.92
|
|
M 130.0
|
1.00
|
128.92
|
|
M 132.0
|
1.00
|
130.92
|
|
M 135.0
|
1.00
|
133.92
|
|
M 138.0
|
1.00
|
136.92
|
|
M 140.0
|
1.00
|
138.92
|
|
M 142.0
|
1.00
|
140.92
|
|
M 145.0
|
1.00
|
143.92
|
|
M 148.0
|
1.00
|
146.92
|
|
M 150.0
|
1.00
|
148.92
|
|
M 152.0
|
1.00
|
150.92
|
|
M 155.0
|
1.00
|
153.92
|
|
M 158.0
|
1.00
|
156.92
|
|
M 160.0
|
1.00
|
158.92
|
|
M 162.0
|
1.00
|
160.92
|
|
M 165.0
|
1.00
|
163.92
|
|
M 168.0
|
1.00
|
166.92
|
|
M 170.0
|
1.00
|
168.92
|
|
M 172.0
|
1.00
|
170.92
|
|
M 175.0
|
1.00
|
173.92
|
|
M 178.0
|
1.00
|
176.92
|
|
M 180.0
|
1.00
|
178.92
|
|
M 182.0
|
1.00
|
180.92
|
|
M 185.0
|
1.00
|
183.92
|
|
M 188.0
|
1.00
|
186.92
|
|
M 190.0
|
1.00
|
188.92
|
|
M 192.0
|
1.00
|
190.92
|
|
M 195.0
|
1.00
|
193.92
|
|
M 198.0
|
1.00
|
196.92
|
|
M 200.0
|
1.00
|
198.92
|
|
|