ISO 724 - Metric Threads

Dimensions of metric threads according to ISO 724. Calculate metric thread dimensions including pitch, clearance drill, tap drill, and tensile stress area for coarse and fine threads up to M 300.

Calculator

Inputs

Nominal Diameter (mm)

Pitch (mm)

Results

Thread Depth-- mm

Thread Angle-- °

Minor Diameter-- mm

Pitch Diameter-- mm

Coarse Threads - ISO 724
M 1.6	0.35	1.8	1.25	—
M 2	0.4	2.4	1.6	—
M 2.5	0.45	2.9	2	—
M 3	0.5	3.4	2.5	—
M 3.5	0.6	3.9	2.9	—
M 4	0.7	4.5	3.3	8.78
M 5	0.8	5.5	4.2	14.2
M 6	1	6.6	5	20.1
M 8	1.25	9	6.8	36.6
M 10	1.5	12	8.5	58
M 12	1.75	14	10.2	84.3
M 14	2	16	12	—
M 16	2	18	14	157
M 20	2.5	22	17.5	245
M 22	2.5	25	19.5	—
M 24	3	27	21	353
M 27	3	30	24	—
M 30	3.5	33	26.5	561
M 36	4	40	32	817
M 42	4.5	46	37.5	1120
M 48	5	53	43	1470
M 56	5.5	62	50.5	2030
M 64	6	70	58	2680
M 68	6	74	62	—