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Imperial Tap Chart
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Melting Points
Metric Tap Chart
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Pipe Threads
Screw Extractors
Sheet Metal Gauges & Weights
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Metric Tap Chart
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Aluminum, Brass, Plastics
Steel, Stainless Steel, Iron
Close Fit
Standard Fit
75% Thread
50% Thread
Screw Size
Major Dia (mm)
mm per Thread
Drill Size
Closest Imperial
Drill Size
Closest Imperial
Drill Size
Closest Imperial
Drill Size
Closest Imperial
M1.5 x 0.35
1.5
0.35
1.15
#56
1.60
#55
1.6
1/16
1.65
#52
M1.6 x 0.35
1.6
0.35
1.25
#55
1.70
#54
1.8
#49
1.75
#50
M1.8 x 0.35
1.8
0.35
1.45
#53
1.90
1/16
1.9
#49
2.00
5/64
M2 x 0.45
2
0.45
1.55
1/16
1.70
#51
2.1
#45
2.20
#44
M2 x 0.4
2
0.40
1.6
#52
1.75
#50
M2.2 x 0.45
2.2
0.45
1.75
#50
1.90
#48
2.30
3/32
2.40
#41
M2.5 x 0.45
2.5
0.45
2.05
#46
2.65
#44
2.9
#32
2.75
7/64
M3 x 0.5
3
0.5
2.5
#39
2.70
#36
3.4
#29
3.30
#30
M3.5 x 0.6
3.5
0.6
2.9
#32
3.10
#31
3.9
#23
3.85
#24
M4 x 0.75
4
0.75
3.25
#30
3.50
#28
4.20
#19
4.40
#17
M4 x 0.7
4
0.7
3.3
#30
3.50
#28
M4.5 x 0.75
4.5
0.75
3.75
#25
4.00
#22
4.75
#13
5.00
#9
M5 x 1.00
5
1.0
4.00
#21
4.40
11/64
5.25
#5
5.50
7/32
M5 x 0.9
5
0.9
4.10
#20
4.40
#17
M5 x 0.8
5
0.8
4.2
#19
4.50
#16
M5.5 x 0.90
5.5
0.9
4.60
#14
4.90
#10
5.80
#1
6.10
B
M6 x 1
6
1
5
#8
5.40
#4
6.30
E
6.60
G
M6 x 0.75
6
0.75
5.25
#4
5.50
7/32
M7 x 1.00
7
1.00
6.00
B
6.40
E
7.40
L
7.70
N
M7 x 0.75
7
0.75
6.25
D
6.50
F
M8 x 1.25
8
1.25
6.8
H
7.20
J
8.40
Q
8.80
S
M8 x 1
8
1
7
J
7.40
L
M9 x 1.25
9
1.25
7.80
N
8.20
P
9.50
3/8
9.90
25/64
M9 x 1.0
9
1.0
8.00
O
8.40
21/64
M10 x 1.5
10
1.5
8.5
R
9.00
T
10.50
Z
11.00
7/16
M10 x 1.25
10
1.25
8.8
11/32
9.20
23/64
M10 x 1.0
10
1.00
9.0
T
9.40
U
M11 x 1.50
11
1.50
9.50
3/8
10.00
X
11.60
29/64
12.10
15/32
M12 x 1.75
12
1.75
10.2
13/32
10.90
27/64
12.60
1/2
13.20
33/64
M12 x 1.50
12
1.50
10.50
Z
1.00
7/16
M12 x 1.25
12
1.25
10.8
27/64
11.20
7/16
M14 x 2
14
2
12
15/32
12.70
1/2
14.75
37/64
15.50
39/64
M14 x 1.5
14
1.5
12.5
1/2
13.00
33/64
M14 x 1.25
14
1.25
12.8
1/2
13.2
33/64
M16 x 2
16
2
14
35/64
14.75
37/64
16.75
21/32
17.50
11/16
M16 x 1.5
16
1.5
14.5
37/64
15.00
19/32
M18 x 2.5
18
2.5
15.5
39/64
16.50
41/64
19
3/4
20.00
25/32
M18 x 2.0
18
2.0
16.00
5/8
16.75
21/32
M18 x 1.5
18
1.5
16.5
21/32
17.00
43/64
M20 x 2.5
20
2.5
17.5
11/16
18.50
23/32
21
53/64
22.00
55/64
M20 x 2.00
20
2.0
18.00
45/64
18.50
46/64
M20 x 1.5
20
1.5
18.5
47/64
19.00
3/4
M22 x 2.5
22
2.5
19.5
49/64
20.00
25/32
25
1
26.00
1-1/32
M22 x 1.5
22
1.5
20.5
13/16
20.75
13/16
M24 x 3
24
3
21
53/64
21.50
27/32
27
1-5/64
28.00
1-7/64
M24 x 2
24
2
22
7/8
22.25
7/8
M27 x 3
27
3
24
15/16
24.50
31/32
30
1-3/16
32.00
1-1/16
M27 x 2
27
2
25
1
25.25
1
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