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Unit:mm

Type 2, Grade B, Hexagon Nuts

JIS B 1181 - 1993

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日标JIS B1181 - 1993 JIS1181 1181JIS Type 2, Grade B, Hexagon Nuts
Thread Size
D
M18 M20 M22 M24 M27 M30 M33 M36
P Coarse pitch
Fine pitch-1
Fine pitch-1
c max
min
da max
min
dw min
e min
m max
min
m1 min
m2 min
s max=nominal size
min
2.5 2.5 2.5 3 3 3.5 3.5 4
- 1.5 - 2 - 2 - 3
1.5 2 1.5 - 2 - 2 -
0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8
0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
19.5 21.6 23.7 25.9 29.1 32.4 35.6 38.9
18 20 22 24 27 30 33 36
24.85 27.7 31.35 33.25 38 42.75 46.55 51.11
29.56 32.95 37.29 39.55 45.2 50.85 55.37 60.79
17.6 20.3 21.8 23.9 26.7 28.6 32.5 34.7
16.9 19 20.5 22.6 25.4 27.3 30.9 33.1
13.52 15.2 16.4 18.08 20.32 21.84 24.72 26.48
11.83 13.3 14.35 15.82 17.78 19.11 21.63 23.17
27 30 34 36 41 46 50 55
26.16 29.16 33 35 40 45 49 53.8

Alternative history

JIS B 1181 - 1993 JIS B 1181 - 2004 JIS B 1181 - 2014
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