|
Tap Chart - Metric Threads
|
|
Tap size
|
Basic major
dia (mm) |
Basic major dia
(inch) |
mm per thread
|
Drill size
(mm) |
Drill size
(inch) |
|
M1.6 x 0.35
|
1,6mm
|
.0630
|
.35
|
1,25mm
|
#55
|
|
M2 x 0.4
|
2mm
|
.0787
|
.4
|
1,6mm
|
#52
|
|
M2.5 x 0.45
|
2,5mm
|
.0984
|
.45
|
2,05mm
|
#46
|
|
M3 x 0.5
|
3mm
|
.1181
|
.5
|
2,5mm
|
#39
|
|
M3.5 x 0.6
|
3,5mm
|
.1378
|
.6
|
2,9mm
|
#32
|
|
M4 x 0.7
|
4mm
|
.1575
|
.7
|
3,3mm
|
#30
|
|
M5 x 0.8
|
5mm
|
.1969
|
.8
|
4,2mm
|
#19
|
|
M6 x 1
|
6mm
|
.2362
|
1
|
5mm
|
#8
|
|
M8 x 1.25
|
8mm
|
.3150
|
1.25
|
6,8mm
|
H
|
|
M8 x 1
|
8mm
|
.3150
|
1
|
7mm
|
J
|
|
M10 x 1.5
|
10mm
|
.3937
|
1.5
|
8,5mm
|
R
|
|
M10 x 1.25
|
10mm
|
.3937
|
1.25
|
8,8mm
|
11/32
|
|
M12 x 1.75
|
12mm
|
.4724
|
1.75
|
10,2mm
|
13/32
|
|
M12 x 1.25
|
12mm
|
.4724
|
1.25
|
10,8mm
|
27/64
|
|
M14 x 2
|
14mm
|
.5512
|
2
|
12mm
|
15/32
|
|
M14 x 1.5
|
14mm
|
.5512
|
1.5
|
12,5mm
|
1/2
|
|
M16 x 2
|
16mm
|
.6299
|
2
|
14mm
|
35/64
|
|
M16 x 1.5
|
16mm
|
.6299
|
1.5
|
14,5mm
|
37/64
|
|
M18 x 2.5
|
18mm
|
.7087
|
2.5
|
15,5mm
|
39/64
|
|
M18 x 1.5
|
18mm
|
.7087
|
1.5
|
16,5mm
|
21/32
|
|
M20 x 2.5
|
20mm
|
.7874
|
2.5
|
17,5mm
|
11/16
|
|
M20 x 1.5
|
20mm
|
.7874
|
1.5
|
18,5mm
|
47/64
|
|
M22 x 2.5
|
22mm
|
.8661
|
2.5
|
19,5mm
|
49/64
|
|
M22 x 1.5
|
22mm
|
.8661
|
1.5
|
20,5mm
|
13/16
|
|
M24 x 3
|
24mm
|
.9449
|
3
|
21mm
|
53/64
|
|
M24 x 2
|
24mm
|
.9449
|
2
|
22mm
|
7/8
|
|
M27 x 3
|
27mm
|
1.0630
|
3
|
24mm
|
15/16
|
|
M27 x 2
|
27mm
|
1.0630
|
2
|
25mm
|
1
|
