Dimensions of Prevailing Torque Metric Hex Flange Nuts

Nominal Diameter and Thread Pitch	Width Across Flats, S		Width Across Corners, E		Thickness M (All Nut Property Classes)				Flange Diameter, Dc, Max	Bearing Circle Diameter, Dw, Min	Flange Edge Thickness, C, Min	Flange Top Fillet Radius, R, Max
					All Metal Type		Top Insert Type
	Max	Min	Max	Min	Max	Min	Max	Min
M6 x 1	10.00	9.78	11.55	11.05	7.30	5.70	8.80	8.00	14.2	12.2	1.1	0.4
M8 x 1.25	13.00	12.73	15.01	14.38	9.40	7.60	10.70	9.70	17.9	15.8	1.2	0.5
M10 x 1.5	15.00	14.73	17.32	16.64	11.40	9.60	13.50	12.50	21.8	19.6	1.5	0.6
M12 x 1.75	18.00	17.73	20.78	20.03	13.80	11.60	16.10	15.10	26.0	23.8	1.8	0.7
M14 x 2	21.00	20.67	24.25	23.35	15.90	13.30	18.20	17.00	29.9	27.6	2.1	0.9
M16 x 2	24.00	23.67	27.71	26.75	18.30	15.30	20.30	19.10	34.5	31.9	2.4	1.0
M20 x 2.5	30.00	29.16	34.64	32.95	22.40	18.90	24.80	23.50	42.8	39.9	3.0	1.2

• Also includes metal nuts with non-metallic inserts, plugs or patches in their threads.
• All dimensions are in millimeters.