ASME B18.2.4.6M Metric Heavy Hex Nuts

Nominal Nut Dia. and Thread Pitch	Width Across Flats, S		Width Across Corners, E		Thickness, M		Bearing Face Dia., D_w	Washer Face Thickness, C
ANSI B18.2.4.6M - M12 × 1.75	21	20.16	24.25	22.78	12.3	11.9	19.2	0.8	0.4
ANSI B18.2.4.6M - M14 × 2	24	23.16	27.71	26.17	14.3	13.6	22	0.8	0.4
ANSI B18.2.4.6M - M16 × 2	27	26.16	31.18	29.56	17.1	16.4	24.9	0.8	0.4
ANSI B18.2.4.6M - M20 × 2.5	34	33	39.26	37.29	20.7	19.4	31.4	0.8	0.4
ANSI B18.2.4.6M - M22 × 2.5	36	35	41.57	39.55	23.6	22.3	33.3	0.8	0.4
ANSI B18.2.4.6M - M24 × 3	41	40	47.34	45.2	24.2	22.9	38	0.8	0.4
ANSI B18.2.4.6M - M27 × 3	46	45	53.12	50.85	27.6	26.3	42.8	0.8	0.4
ANSI B18.2.4.6M - M30 × 3.5	50	49	57.74	55.37	30.7	29.1	46.6	0.8	0.4
ANSI B18.2.4.6M - M36 × 4	60	58.8	69.28	66.44	36.6	35	55.9	0.8	0.4
ANSI B18.2.4.6M - M42 × 4.5	70	67.9	80.83	77.41	42	40.4	64.5	1	0.5
ANSI B18.2.4.6M - M48 × 5	80	77.6	92.38	88.46	48	46.4	73.7	1	0.5
ANSI B18.2.4.6M - M56 × 5.5	90	87.2	103.92	99.41	56	54.1	82.8	1	0.5
ANSI B18.2.4.6M - M64 × 6	100	96.8	115.47	110.35	64	62.1	92	1	0.5
ANSI B18.2.4.6M - M72 × 6	110	106.4	127.02	121.3	72	70.1	101.1	1.2	0.6
ANSI B18.2.4.6M - M80 × 6	120	116	138.56	132.24	80	78.1	110.2	1.2	0.6
ANSI B18.2.4.6M - M90 × 6	135	130.5	155.88	148.77	90	87.8	124	1.2	0.6
ANSI B18.2.4.6M - M100 × 6	150	145	173.21	165.3	100	97.8	137.8	1.2	0.6
a This size with width across flats of 15 mm is not standard. Unless specifically ordered, M10 hex jam nuts with 16 mm width across flats will be furnished. All dimensions are in millimeters.