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High Strength Bolts for Joints of Space Grid Structures

GB /T 16939 - 1997

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国标GB /T16939 - 1997 GB16939 16939GB High Strength Bolts for Joints of Space Grid Structures
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 *Models with different eras.

Screw Thread
d
M12 M14 M16 M20 M22 M24 M27 M30 M33
P Pitch
b min
max
dk max
min
ds max
min
k Nominal Size
max
min
L Nominal Size
max
min
L1 Nominal Size
max
min
L2 Ref.
L3
n max
min
t1 max
min
t2 max
min
1.75 2 2 2.5 2.5 3 3 3.5 3.5
15 17 20 25 27 30 33 37 40
18.5 21 24 30 32 36 39 44 47
18 21 24 30 34 36 41 46 50
17.38 20.38 23.38 29.38 33.38 35.38 40.38 45.38 49.38
12.35 14.35 16.35 20.42 22.42 24.42 27.42 30.42 33.5
11.65 13.65 15.65 19.58 21.58 23.58 26.58 29.58 32.5
6.4 7.5 10 12.5 14 15 17 18.7 21
7.15 8.25 10.75 13.4 14.9 15.9 17.9 19.75 22.05
5.65 6.75 9.25 11.6 13.1 14.1 16.1 17.65 19.95
50 54 62 73 75 82 90 98 101
50.8 54.95 62.95 73.95 75.95 83.1 91.1 99.1 102.1
49.2 53.05 61.05 72.05 74.05 80.9 88.9 96.9 99.9
18 18 22 24 24 24 28 28 28
18.35 18.35 22.42 24.42 24.42 24.42 28.42 28.42 28.42
17.65 17.65 21.58 23.58 23.58 23.58 27.58 27.58 27.58
10 10 13 16 16 18 20 24 24
4 4 4 4 4 4 4 4 4
3.3 3.3 3.3 5.3 5.3 5.3 6.3 6.3 6.3
3 3 3 5 5 5 6 6 6
2.8 2.8 2.8 3.3 3.3 3.3 4.38 4.38 4.38
2.2 2.2 2.2 2.7 2.7 2.7 3.62 3.62 3.62
2.3 2.3 2.3 2.8 2.8 2.8 3.3 3.3 3.3
1.7 1.7 1.7 2.2 2.2 2.2 2.7 2.7 2.7
Screw Thread
d
M36 M39 M42 M45 M48 M52 M56 M60 M64
P Pitch
b min
max
dk max
min
ds max
min
k Nominal Size
max
min
L Nominal Size
max
min
L1 Nominal Size
max
min
L2 Ref.
L3
n max
min
t1 max
min
t2 max
min
4 4 4.5 4.5 5 5 4 4 4
44 47 50 55 58 62 66 70 74
52 55 59 64 68 72 74 78 82
55 60 65 70 75 80 90 95 100
54.26 59.26 64.26 69.26 74.26 79.26 89.13 94.13 99.13
36.5 39.5 42.5 45.5 48.5 52.6 56.6 60.6 64.6
35.5 38.5 41.5 44.5 47.5 51.4 55.4 59.4 63.4
22.5 25 26 28 30 33 35 38 40
23.55 26.05 27.05 29.05 31.05 34.25 36.25 39.25 41.25
21.45 23.95 24.95 26.95 28.95 31.75 33.75 36.75 38.75
125 128 136 145 148 162 172 196 205
126.25 129.25 137.25 146.25 149.25 163.25 173.25 197.45 206.45
123.75 126.75 134.75 143.75 146.75 160.75 170.75 194.75 203.55
43 43 43 48 48 48 53 53 58
43.50 43.50 43.50 48.50 48.50 48.50 53.60 53.60 58.60
42.50 42.50 42.50 47.50 47.50 47.50 52.40 52.40 57.40
26 26 30 30 30 38 42 57 57
4 4 4 4 4 4 4 4 4
8.36 8.36 8.36 8.36 8.36 8.36 8.36 8.36 8.36
8 8 8 8 8 8 8 8 8
5.38 5.38 5.38 5.38 5.38 5.38 5.38 5.38 5.38
4.62 4.62 4.62 4.62 4.62 4.62 4.62 4.62 4.62
4.38 4.38 4.38 4.38 4.38 4.38 4.38 4.38 4.38
3.62 3.62 3.62 3.62 3.62 3.62 3.62 3.62 3.62

Alternative history

GB /T 16939 - 1997 GB /T 16939 - 2016
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