ASME B18.2.4.6M Metric Heavy Hex Nuts

ASME B18.2.4.6M Metric Heavy Hex Nuts Standard covers the complete general and dimensional data for products in the metric series recognized as American National Standard for sizes M12 through M36. These four metric structural products include

Metric heavy hex structural bolts: ASTM A325M and ASTM A490M
Metric heavy hex nuts: ASTM A563M
Metric hardened steel washers; circular, circular clipped, and beveled: ASTM F436M
Metric compressible washer-type direct tension indicators: ASTM F959M

The Tables measurements are also converted into millimeters to make the information clearer and easier to understand.

ASME B18.2.4.6M Metric Heavy Hex Nuts Dimensions (mm)

Nominal Dia.	Width Across Flats, S		Width Across Corners, E		Thickness, M		Bearing Face Dia., D_w	Washer Face Thickness, C		Total Runout of Bearing Surface FIM
Nominal Dia.	Max.	Min.	Max.	Min.	Max.	Min.	Min.	Max.	Min.	Max.
M12	21.00	20.16	24.25	22.78	12.3	11.9	19.2	0.8	0.4	0.38
M14	24.00	23.16	27.71	26.17	14.3	13.6	22.0	0.8	0.4	0.42
M16	27.00	26.16	31.18	29.56	17.1	16.4	24.9	0.8	0.4	0.47
M20	34.00	33.00	39.26	37.29	20.7	19.4	31.4	0.8	0.4	0.58
M22	36.00	35.00	41.57	39.55	23.6	22.3	33.3	0.8	0.4	0.63
M24	41.00	40.00	47.34	45.20	24.2	22.9	38.0	0.8	0.4	0.72
M27	46.00	45.00	53.12	50.85	27.5	26.3	42.8	0.8	0.4	0.80
M30	50.00	49.00	57.74	55.37	30.7	29.1	45.6	0.8	0.4	0.87
M36	60.00	58.80	69.28	66.44	36.6	35.0	55.9	0.8	0.4	1.05
M42	70.00	67.90	80.83	77.41	42.0	40.4	64.5	1.0	0.5	1.22
M48	80.00	77.60	92.38	88.46	48.0	46.4	73.7	1.0	0.5	1.40
M56	90.00	87.20	103.92	99.41	56.0	54.1	82.8	1.0	0.5	1.57
M64	100.00	96.80	115.47	110.35	64.0	62.1	92.0	1.0	0.5	1.75
M72	110.00	106.40	127.02	121.30	72.0	70.1	101.1	1.2	0.6	1.92
M80	120.00	116.00	138.56	132.24	80.0	78.1	110.2	1.2	0.6	2.09
M90	135.00	130.50	155.88	148.77	90.0	87.8	124.0	1.2	0.6	2.36
M100	150.00	145.00	173.21	165.30	100.0	97.8	137.8	1.2	0.6	2.62

ASME Material Specifications

ASTM A563M Carbon and Alloy Steel Nuts [Metric]
ASTM F467M Nonferrous Nuts for General Use [Metric]
ASTM F836M Style 1 Stainless Steel Metric Nuts
ISO 4032 Hexagon Nuts, Style 1 - Product Grades A and B
ASTM A194/ASTM A194M Nuts
ASTM A1014/A1014M UNS N07718 Bolting, Stud Bolts, Screws, Nuts
ASTM A1082/A1082M Bolting, Stud Bolts, Screws, Nuts
ASTM A453/A453M Bolting, Stud Bolts, Screws, Nuts
ASTM F1554 Anchor Bolts, Anchor Rods
ASTM F3111 Heavy Hex Bolts, Nuts, Washers
ASTM F432 Roof Rock Bolts, Screws, Threaded
ASTM F901 Aluminium Transmission Tower Bolts

Equivalent DIN Specifications

DIN 1587 Hexagon Domed Nuts
DIN 439 Hexagon Thin Nuts

ISO Material Specifications

ISO 898-2 Nuts
ISO 3506-2 Nuts

EN Material Specifications

EN 10269 Bolting Fasteners, Bolting, Stud Bolts, Screws, Nuts, Washers