ASME B18.6.7m Hex Head Machine Screws

Nominal Screw Size and Thread Pitch	DS		S^a		Ea	K		DA	R
	Body Diameter		Hex Width Across Flats		Hex Width Across Corners	Head Height		Underhead Fillet
	Body Diameter		Hex Width Across Flats		Hex Width Across Corners	Head Height		Transition Dia	Radius
	Max	Min	Max	Min	Min	Max	Min	Max	Min
ASME B18.6.7M - M2 × 0.4	2	1.65	3.2	3.02	3.38	1.6	1.3	2.6	0.1
ASME B18.6.7M - M2.5 × 0.45	2.5	2.12	4	3.82	4.28	2.1	1.8	3.1	0.1
ASME B18.6.7M - M3 × 0.5	3	2.58	5	4.82	5.4	2.3	2	3.6	0.1
ASME B18.6.7M - M3.5 × 0.6	3.5	3	5.5	5.32	5.96	2.6	2.3	4.1	0.1
ASME B18.6.7M - M4 × 0.7	4	3.43	7	6.78	7.59	3	2.6	4.7	0.2
ASME B18.6.7M - M5 × 0.8	5	4.36	8	7.78	8.71	3.8	3.3	5.7	0.2
ASME B18.6.7M - M6 × 1	6	5.21	10	9.78	10.95	4.7	4.1	6.8	0.3
ASME B18.6.7M - M8 × 1.25	8	7.04	13	12.73	14.26	6	5.2	9.2	0.4
ASME B18.6.7M - M10 × 1.5	10	8.86	16	15.73	17.62	7.5	6.5	11.2	0.4
ASME B18.6.7M - M12 × 1.75	12	10.68	18	17.73	19.86	9	7.8	13.2	0.4
ASME B18.6.7M - M10 × 1.5^b	10	8.86	15	14.73	16.5	7.5	6.5	11.2	0.4
a Dimensions across flats and across corners of the head are measured at the point of maximum metal. Taper of sides of head (angle between one side and the axis) shall not exceed 2° or 0.10 mm, whichever is greater, the specified width across flats being the large dimension. b The M10 size screws having heads with 15 mm width across flats are not ISO Standard. Unless M10 size screws with 15 mm width across flats are specifically ordered, M10 size screws with 16 mm width across flats shall be furnished.