சில முக்கியமான Drill Tap And Screw Full explanation Tamil / Mech Life Tamil 

M1 x 0.25
Drill Size
0.75mm
M1.1 x 0.25
0.85mm
M1.2 x 0.25
0.95mm
M1.4 x 0.30
1.10mm
M1.6 x 0.35
1.25mm
M1.8 x 0.35
1.45mm
M2 x 0.4
1.60mm
M2.2 x 0.45
1.75mm
M2.5 x 0.45
2.05mm
M3 x 0.5
2.50mm
M3.5 x 0.6
2.90mm
M4 x 0.7
3.30mm
M4.5 x 0.75
3.70mm
M5 x 0.8
4.20mm
M6 x1
5.00mm
M7x1
6.00mm
M8 x 1.25
6.80mm
M9 x 1.25
7.80mm
M10 x 1.5
8.50mm
M11 x 1.5
9.50mm
M12 x 1.75
10.20mm
M14 x 2
12.00mm
M16 x 2
14.00mm
M18 x 2.5
15.50mm
M20 x 2.5
17.50mm
M22 x 2.5
19.50mm
M24 x 3
21.00mm
M27 x 3
24.00mm
M30 x 3.5
26.50mm
M33 x 3.5
29.50mm
M36 x 4
32.00mm
M39 x 4
35.00mm
M42 x 4.5
37.50mm
M45 x 4.5
40.50mm
M48 x 5
43.00mm
M52 x 5
47.00mm
M56 x 5.5
50.50mm
M60 X 5.5
54.50mm
M64 x 6
58.00mm