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Unit:mm

Hexagon Foundation Nuts

JIS B 1220 - 2010

Display drawing:

日标JIS B1220 - 2010 JIS1220 1220JIS Hexagon Foundation Nuts
Screw Thread
d
M16 M20 M22 M24 M27 M30 M33 M36 M39 M42 M45 M48
P Pitch（Coarse thread）
Pitch（Fine thread）
m Nominal Size
max
min
s max
min
e Ref.
2 2.5 2.5 3 3 3.5 3.5 4 4 4.5 4.5 5
/ / / 2 2 2 2 3 3 3 4 4
13 16 18 19 22 24 26 29 31 34 36 38
13.9 16.9 18.9 20 23 25 27 30 32.2 35.2 37.2 39.2
12.1 15.1 17.1 18 21 23 25 28 29.8 32.8 34.8 36.8
24 30 32 36 41 46 50 55 60 65 70 75
23.2 29.2 31 35 40 45 49 53.8 58.8 63.8 68.8 73.8
27.7 34.6 37 41.6 47.3 53.1 57.7 63.5 69.3 75 80.8 86.5
Screw Thread
d
M52 M56 M60 M64 M68 M72 M76 M80 M85 M90 M95 M100
P Pitch（Coarse thread）
Pitch（Fine thread）
m Nominal Size
max
min
s max
min
e Ref.
5 5.5 5.5 6 6 / / / / / / /
4 4 4 4 4 6 6 6 6 6 6 6
42 45 48 51 54 58 61 64 68 72 76 80
43.2 46.2 49.2 52.5 55.5 59.5 62.5 65.5 69.5 73.5 77.5 81.5
40.8 43.8 46.8 49.5 52.5 56.5 59.5 62.5 66.5 70.5 74.5 78.5
80 85 90 95 100 105 110 115 120 130 135 145
78.8 83.6 88.6 93.6 98.6 103.6 108.6 113.6 118.6 128.4 133.4 143.4
92.4 98.1 104 110 115 121 127 133 139 150 156 167

Alternative history

JIS B 1220 - 2010 JIS B 1220 - 2015
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