Machinery's Handbook, 31st Edition
1734
Metric Nuts Table 25. American National Standard Metric Hex Nuts, Styles 1 and 2 ANSI/ASME B18.2.6M-2012 and B18.2.6-2019 S M M
C
E
D w
D w
D w
Identification
Width Across Corners, b E
Bearing Face Dia., d D w
Washer Face Thickness, d C
Width Across Flats, a S
Nominal Nut Dia. and Thread Pitch
Thickness, c M
Max.
Min.
Max.
Min.
Max.
Min.
Min.
Max.
Min.
Metric Hex Nuts.—Style 1
3.02 3.82 4.82 5.32 5.82 6.78 7.78
3.70 4.62 5.77 6.35 6.93 8.08 9.24
3.41 4.32 5.45 6.01 6.58 7.66 8.79
1.30 1.60 2.00 2.40 2.80 3.20 4.70 5.20 6.80 9.1 8.40
1.05 1.35 1.75 2.15 2.55 2.90 4.40 4.90
2.3 3.1 4.1 4.6 5.1 6.0 7.0 8.9
… … … … … … … … … … … … … … … … … … … … … … … … … … … …
M1.6 × 0.35 3.20 M2.5 × 0.45 5.00 M2 × 0.4 M3 × 0.5 4.00 5.50 M3.5 × 0.6 6.00
7.00 8.00
M4 × 0.7 M5 × 0.8 M6 × 1
10.00 9.78 11.55 11.05
6.44 8.7 8.04 10.37 12.10 14.10 16.90 20.20 24.30 29.40
11.6 13.6 14.6 16.6 19.4 22.4 27.9 32.5 42.5 50.8
M8 × 1.25 13.00 12.73 15.01 14.38 e M10 × 1.5 15.00 14.73 17.32 16.64 f M10 × 1.5 16.00 15.73 18.48 17.77
M12 × 1.75 18.00 17.73 20.78 20.03 10.80
21.00 20.67 24.25 23.36 12.80 24.00 23.67 27.71 26.75 14.80 36.00 35.00 41.57 39.55 21.50 55.00 53.80 63.51 60.79 31.00
M14 × 2 M16 × 2 M24 × 3 M36 × 4 M3 × 0.5 M4 × 0.7 M5 × 0.8 M6 × 1
0.8 0.8 0.8 0.8
0.4 0.4 0.4 0.4
M20 × 2.5 30.00 29.16 34.64 32.95 18.00 M30 × 3.5 46.00 45.00 53.12 50.85 25.60
Metric Hex Nuts.—Style 2
5.32 5.82 6.78 7.78
6.35 6.93 8.08 9.24
6.01 6.58 7.66 8.79
2.90 3.30 3.80 5.10 5.70 7.50 10.0 9.30
2.65 3.00 3.50 4.80 5.40 7.14 9.6 8.94
4.6 5.1 5.9 6.9
… … … … … … … … … … … … … … … … … … … … … …
5.50 7.00 8.00
M3.5 × 0.6 6.00
10.00 9.78 11.55 11.05
8.9 11.6 13.6 14.6 16.6 19.6 22.5 27.7 33.2 42.7 51.1
M8 × 1.25 13.00 12.73 15.01 14.38 e M10 × 1.5 15.00 14.73 17.32 16.64 f M10 × 1.5 16.00 15.73 18.48 17.77
11.57 13.40 15.70 19.00 22.60 27.30 33.10
M12 × 1.75 18.00 17.73 20.78 20.03 12.00
21.00 20.67 24.25 23.35 14.10 24.00 23.67 27.71 26.75 16.40 36.00 35.00 41.57 39.55 23.90 55.00 53.80 63.51 60.79 34.70
M14 × 2 M16 × 2 M24 × 3
0.8 0.8 0.8 0.8
0.4 0.4 0.4
M20 × 2.5 30.00 29.16 34.64 32.95 20.30 M30 × 3.5 46.00 45.00 53.12 50.85 28.60
M36 × 4 0.4 a The width across flats shall be the distance, measured perpendicular to the axis of the nut, between two opposite wrenching flats. b A rounding or lack of fill at the junction of hex corners with the chamfer shall be permissible. c The nut thickness shall be the overall distance, measured parallel to the axis of the nut, from the top of the nut to the bearing surface, and shall include the thickness of the washer face where provided. d M16 and smaller nuts shall be double chamfered. M20 and larger nuts shall be either double chamfered or have a washer faced bearing surface and a chamfered top. e Dimensional requirements shown in bold type are in addition to or differ from ISO 4032. f When M10 hex nuts are ordered, nuts with 16 mm width across flats shall be furnished unless 15 mm width across flats is specified.
Copyright 2020, Industrial Press, Inc.
ebooks.industrialpress.com
Made with FlippingBook - Share PDF online