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Click Specification

Same specifications, different dimensions for other parts.

Unit:mm

Metric Hexagon Nuts

ASME/ANSI B 18.2.4.1M - 2007

Display drawing:

美标ASME/ANSI B18.2.4.1M - 2007 ASME/ANSI1 Metric Hexagon Nuts
Thread Size
d
M1.6 M2 M2.5 M3 M3.5 M4 M5 M6 M8
P Pitch
s max
min
e max
min
m max
min
dw min
c ② max
min
0.35 0.40 0.45 0.50 0.60 0.70 0.80 1.00 1.25
3.20 4.00 5.00 5.50 6.00 7.00 8.00 10.00 13.00
3.02 3.82 4.82 5.32 5.82 6.78 7.78 9.78 12.73
3.70 4.62 5.77 6.35 6.93 8.08 9.24 11.55 15.01
3.41 4.32 5.45 6.01 6.58 7.66 8.79 11.05 14.38
1.30 1.60 2.00 2.40 2.80 3.20 4.70 5.20 6.80
1.05 1.35 1.75 2.15 2.55 2.90 4.40 4.90 6.44
2.3 3.1 4.1 4.6 5.1 6.0 7.0 8.9 11.6
- - - - - - - - -
- - - - - - - - -
Thread Size
d
M10 ① M10 ① M12 M14 M16 M20 M24 M30 M36
P Pitch
s max
min
e max
min
m max
min
dw min
c ② max
min
1.50 1.50 1.75 2.00 2.00 2.50 3.00 3.50 4.00
15.00 16.00 18.00 21.00 24.00 30.00 36.00 46.00 55.00
14.73 15.73 17.73 20.67 23.67 29.16 35.00 45.00 53.80
17.32 18.45 20.78 24.25 27.71 34.64 41.57 53.12 63.51
16.64 17.77 20.03 23.35 26.75 32.95 39.55 50.85 60.79
9.10 8.40 10.80 12.80 14.80 18.00 21.50 25.60 31.00
8.70 8.04 10.37 12.10 14.10 16.90 20.20 24.30 29.40
13.6 14.6 16.6 19.4 22.4 27.9 32.5 42.5 50.8
- - - - - 0.8 0.8 0.8 0.8
- - - - - 0.4 0.4 0.4 0.4
①,When M10 nuts are ordered, nuts with 16 mm width across flats shall be funished, unless 15 mm width across flats is specified.
②,M16 and smaller nuts shall be double chamfered. M20 and larger nuts, at the manufacturer's option, shall be either double chamfered or have a washer faced bearing surface and a chamfered top.

Alternative history

ANSI/ASME B 18.2.4.1M - 1979 ANSI/ASME B 18.2.4.1M - 1999 ANSI/ASME B 18.2.4.1M - 1999 ANSI/ASME B 18.2.4.1M - 2007
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