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GB/T 5356-2021
Long hexagon socket screw keys
Nom
s max
s min
e max
e min
L1 max
L1 min
L2 max
L2 min
1.3
1.27
1.24
1.42
1.37
63.5
61.5
13
11
1.5
1.50
1.48
1.68
1.63
63.5
61.5
15.5
13.5
2
2.00
1.96
2.25
2.18
77
75
18
16
2.5
2.50
2.46
2.82
2.75
87.5
83.5
20.5
18.5
3
3.00
2.96
3.39
3.31
93
89
23
21
3.5
3.50
3.45
3.96
3.91
98.5
94.5
25.5
23.5
4
4.00
3.95
4.53
4.44
104
100
29
27
4.5
4.50
4.45
5.10
5.04
114.5
110.5
30.5
28.5
5
5.00
4.95
5.67
5.58
120
116
33
31
5.5
5.50
5.45
6.26
6.17
129.5
125.5
34.5
32.5
6
6.00
5.95
6.81
6.71
141
137
38
36
7
7.00
6.94
7.94
7.85
147
141
41
39
8
8.00
7.94
9.09
8.97
158
152
44
42
9
9.00
8.94
10.23
10.10
169
163
47
45
10
10.00
9.94
11.37
11.23
180
174
50
48
11
11.00
10.89
12.51
12.31
191
185
53
51
12
12.00
11.89
13.65
13.44
202
196
57
55
13
13.00
12.89
14.79
14.56
213
206
63
60
14
14.00
13.89
15.93
15.70
229
222
70
67
15
15.00
14.89
17.07
16.83
240
233
73
70
16
16.00
15.89
18.21
17.97
240
233
76
73
17
17.00
16.89
19.35
19.09
262
255
80
77
18
18.00
17.89
20.49
20.21
262
255
84
81
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