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ISO Metric Threads

Coarse Thread

Major Diameter mm	Pitch mm	Tensile Stress Area mm²	Tapping Drill mm
1.6	0.35	1.27	1.35
1.8	0.35	1.70	1.55
2	0.40	2.1	1.70
2.2	0.45	2.5	1.90
2.5	0.45	3.4	2.20
3	0.50	5.0	2.65
3.5	0.60	6.8	3.10
4	0.70	8.8	3.50
4.5	0.75	11.5	4.0
5	0.80	14.2	4.50
6	1.00	20.1	5.3
7	1.00
8	1.25	36.6	7.1
9	1.25
10	1.50	58.0	8.8
11	1.50
12	1.75	84.3	10.7
14	2.00
16	2.00	157.0	14.5
18	2.50
20	2.50
22	2.50
24	3.00

Fine Thread

Major Diameter mm	Pitch mm	Tensile Stress Area mm²	Tapping Drill mm
1.6	0.20
1.8	0.20
2	0.25
2.2	0.25
2.5	0.35
3	0.35
3.5	0.35
4	0.50
4.5	0.50
5	0.50
6	0.75
7	0.75
8	1.00
10	1.25
12	1.25
14	1.50
16	1.50
18	1.50
20	1.50
22	1.50
24	2.00

Subjects: Mechanical Engineering