ASME B18.2.4.2M Metric Hex Nuts Style 2

ASME B18.2.4.2M Metric Hex Nuts Standard covers the complete general and dimensional data for metric hex nuts, Style 2, recognized as American National Standard.
The inclusion of dimensional data in this Standard is not intended to imply that all of the nut sizes in conjunction with the various options described herein are stock items. Purchasers should consult with suppliers concerning lists of stock production hex nuts, Style 2.
The Tables measurements are also converted into millimeters to make the information clearer and easier to understand.

ASME B18.2.4.2M Metric Hex Nuts Style 2 Dimensions (mm)

Nominal Diameter	Width Across Flats, S		Width Across Corners, E		Thickness, M		Bearing Face Diameter, Dw, Min.	Washer Face Thickness, C		Total Runout of Bearing Surface FIM, Max.
	Max.	Min.	Max.	Min.	Max.	Min.		Max.	Min.
M3	5.50	5.32	6.35	6.01	2.90	2.65	4.6	...	...	...
M3.5	6.00	5.82	6.93	6.58	3.30	3.00	5.1	...	...	...
M4	7.00	6.78	8.08	7.66	3.80	3.50	6.0	...	...	...
M5	8.00	7.78	9.24	8.79	5.10	4.80	7.0	...	...	0.30
M6	10.00	9.78	11.55	11.05	5.70	5.40	8.9	...	...	0.33
M8	13.00	12.73	15.01	14.38	7.50	7.14	11.6	...	...	0.36
M10	15.00	14.73	17.32	16.64	10.0	9.6	13.6	...	...	0.39
M12	18.00	17.73	20.78	20.03	12.00	11.57	16.6	...	...	0.42
M14	21.00	20.67	24.25	23.36	14.10	13.40	19.4	...	...	0.45
M16	24.00	23.67	27.71	26.75	16.40	15.70	22.4	...	...	0.48
M20	30.00	29.16	34.64	32.95	20.30	19.00	27.9	0.8	0.4	0.56
M24	36.00	35.00	41.57	39.55	23.90	22.60	32.5	0.8	0.4	0.64
M30	46.00	45.00	53.12	50.85	28.60	27.30	42.5	0.8	0.4	0.76
M36	55.00	53.80	63.51	60.79	34.70	33.10	50.8	0.8	0.4	0.89