ISO Metric

ISO Metric Fine Thread, pitch 0.5

ISO metric threads have a 60° symmetric profile and are designated by M, the nominal diameter and, for fine threads, the pitch (e.g. M10 × 1).

Standard: DIN 13-3
Flank angle: 60°
Sizes listed: 119
Range: M 3.5 – M 90.0

Profile shape (schematic, not to scale)

Nominal Diameter mm	Pitch mm	Tapping Drill Size mm (D − P)	Minor Diameter D1 mm
M 3.5	0.50	3.0	2.96
M 4.0	0.50	3.5	3.46
M 4.5	0.50	4.0	3.96
M 5.0	0.50	4.5	4.46
M 5.5	0.50	5.0	4.96
M 6.0	0.50	5.5	5.46
M 6.5	0.50	6.0	5.96
M 7.0	0.50	6.5	6.46
M 7.5	0.50	7.0	6.96
M 8.0	0.50	7.5	7.46
M 8.5	0.50	8.0	7.96
M 9.0	0.50	8.5	8.46
M 9.5	0.50	9.0	8.96
M 10.0	0.50	9.5	9.46
M 10.5	0.50	10.0	9.96
M 11.0	0.50	10.5	10.46
M 11.5	0.50	11.0	10.96
M 12.0	0.50	11.5	11.46
M 12.5	0.50	12.0	11.96
M 13.0	0.50	12.5	12.46
M 13.5	0.50	13.0	12.96
M 14.0	0.50	13.5	13.46
M 14.5	0.50	14.0	13.96
M 15.0	0.50	14.5	14.46
M 15.5	0.50	15.0	14.96
M 16.0	0.50	15.5	15.46
M 16.5	0.50	16.0	15.96
M 17.0	0.50	16.5	16.46
M 17.5	0.50	17.0	16.96
M 18.0	0.50	17.5	17.46
M 18.5	0.50	18.0	17.96
M 19.0	0.50	18.5	18.46
M 19.5	0.50	19.0	18.96
M 20.0	0.50	19.5	19.46
M 20.5	0.50	20.0	19.96
M 21.0	0.50	20.5	20.46
M 21.5	0.50	21.0	20.96
M 22.0	0.50	21.5	21.46
M 22.5	0.50	22.0	21.96
M 23.0	0.50	22.5	22.46
M 23.5	0.50	23.0	22.96
M 24.0	0.50	23.5	23.46
M 24.5	0.50	24.0	23.96
M 25.0	0.50	24.5	24.46
M 25.5	0.50	25.0	24.96
M 26.0	0.50	25.5	25.46
M 26.5	0.50	26.0	25.96
M 27.0	0.50	26.5	26.46
M 27.5	0.50	27.0	26.96
M 28.0	0.50	27.5	27.46
M 28.5	0.50	28.0	27.96
M 29.0	0.50	28.5	28.46
M 29.5	0.50	29.0	28.96
M 30.0	0.50	29.5	29.46
M 30.5	0.50	30.0	29.96
M 31.0	0.50	30.5	30.46
M 31.5	0.50	31.0	30.96
M 32.0	0.50	31.5	31.46
M 32.5	0.50	32.0	31.96
M 33.0	0.50	32.5	32.46
M 33.5	0.50	33.0	32.96
M 34.0	0.50	33.5	33.46
M 34.5	0.50	34.0	33.96
M 35.0	0.50	34.5	34.46
M 35.5	0.50	35.0	34.96
M 36.0	0.50	35.5	35.46
M 36.5	0.50	36.0	35.96
M 37.0	0.50	36.5	36.46
M 37.5	0.50	37.0	36.96
M 38.0	0.50	37.5	37.46
M 38.5	0.50	38.0	37.96
M 39.0	0.50	38.5	38.46
M 39.5	0.50	39.0	38.96
M 40.0	0.50	39.5	39.46
M 40.5	0.50	40.0	39.96
M 41.0	0.50	40.5	40.46
M 41.5	0.50	41.0	40.96
M 42.0	0.50	41.5	41.46
M 42.5	0.50	42.0	41.96
M 43.0	0.50	42.5	42.46
M 43.5	0.50	43.0	42.96
M 44.0	0.50	43.5	43.46
M 44.5	0.50	44.0	43.96
M 45.0	0.50	44.5	44.46
M 45.5	0.50	45.0	44.96
M 46.0	0.50	45.5	45.46
M 46.5	0.50	46.0	45.96
M 47.0	0.50	46.5	46.46
M 47.5	0.50	47.0	46.96
M 48.0	0.50	47.5	47.46
M 48.5	0.50	48.0	47.96
M 49.0	0.50	48.5	48.46
M 49.5	0.50	49.0	48.96
M 50.0	0.50	49.5	49.46
M 51.0	0.50	50.5	50.46
M 52.0	0.50	51.5	51.46
M 53.0	0.50	52.5	52.46
M 54.0	0.50	53.5	53.46
M 55.0	0.50	54.5	54.46
M 56.0	0.50	55.5	55.46
M 57.0	0.50	56.5	56.46
M 58.0	0.50	57.5	57.46
M 59.0	0.50	58.5	58.46
M 60.0	0.50	59.5	59.46
M 61.0	0.50	60.5	60.46
M 62.0	0.50	61.5	61.46
M 63.0	0.50	62.5	62.46
M 64.0	0.50	63.5	63.46
M 65.0	0.50	64.5	64.46
M 68.0	0.50	67.5	67.46
M 70.0	0.50	69.5	69.46
M 72.0	0.50	71.5	71.46
M 75.0	0.50	74.5	74.46
M 78.0	0.50	77.5	77.46
M 80.0	0.50	79.5	79.46
M 82.0	0.50	81.5	81.46
M 85.0	0.50	84.5	84.46
M 88.0	0.50	87.5	87.46
M 90.0	0.50	89.5	89.46

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Reference values only. Verify against the current edition of the governing standard before use in production drawings or manufacturing. Provided by Micro Components as a free engineering resource.

ISO Metric Fine Thread, pitch 0.5

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