ASME B18.2.5M Metric 12 Point Flange Head Screws

Nominal Screw Diameter & Thread Pitch	Body Diameter, Ds		Width Across Flats, S			Minimum Width Aross Corners, E	Flange Diameter, DC		Minimum Bearing Circle Diameter, Dw	Flange Edge Thickness, C		Head Height, K		Minimum Wrenching Height Ref, Kw	Maximum Flange Top Fillet Radius, R2	Maximum Head Drive Root Radius, R4
	Max	Min	Nom	Max	Min		Max	Min		Max	Min	Max	Min
M5 X 0.8	5	4.82	5	5	4.79	5.6	8.72	8.27	8.03	2.25	2	5	4.88	2.63	0.5	0.3
M6 X 1.0	6	5.82	6	6	5.79	6.7	10.22	9.77	9.38	2.7	2.45	6	5.82	3.12	0.5	0.4
M8 X 1.25	8	7.78	8	8	7.78	9	13.27	12.72	12.33	3.6	3.35	8	7.78	4.18	0.5	0.4
M10 X 1.5	10	9.78	10	10	9.78	11.2	16.27	15.69	15.33	4.5	4.13	10	9.78	5.28	0.5	0.5
M12 X 1.75	12	11.73	12	12	11.79	13.5	18.27	17.67	17.23	5.4	5.03	12	11.73	6.33	0.5	0.5
M14 X 2	14	13.73	14	14	13.79	15.8	21.33	20.67	20.17	6.3	5.93	14	13.73	7.43	0.5	0.7
M16 X 2	16	15.73	16	16	15.81	18	24.33	23.62	23.17	7.2	6.83	16	15.73	8.53	0.5	0.7
M20 X 2.5	20	19.67	20	20	19.82	22.5	30.33	29.55	28.87	9	8.5	20	19.67	10.67	0.5	0.8
M24 X 3	24	23.67	24	24	23.75	27	36.39	35.52	34.81	10.8	10.3	24	23.67	12.87	0.5	0.8
M30 X 3.5	30	29.67	30	30	29.72	33.8	45.39	44.52	43.61	13.5	13	30	29.67	16.17	0.5	1
M36 X 4	36	35.61	36	36	35.70	40.5	54.46	52.75	52.54	16.2	15.6	36	35.57	19.37	0.5	1.3