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JIS B4648-1994
Hexagon scoket screw keys
Nom
s max
s min
e max
e min
L1
L2
0.7
0.711
0.698
0.79
0.76
32
6
0.9
0.889
0.876
0.99
0.96
32
10
1.3
1.27
1.244
1.42
1.37
40
12
1.5
1.5
1.475
1.68
1.63
45
14
2
2
1.96
2.25
2.18
50
16
2.5
2.5
2.46
2.82
2.75
56
18
3
3
2.96
3.39
3.31
63
20
4
4
3.952
4.53
4.44
70
25
5
5
4.952
5.67
5.58
80
28
6
6
5.952
6.81
6.71
90
32
8
8
7.942
9.09
8.97
100
36
10
10
9.942
11.37
11.23
112
40
12
12
11.89
13.65
13.44
125
45
14
14
13.89
15.93
15.7
140
56
17
17
16.89
19.35
19.09
160
63
19
19
18.87
21.63
21.32
180
70
22
22
21.87
25.05
24.71
200
80
24
24
23.87
27.33
26.97
224
90
27
27
26.87
30.75
30.36
250
100
32
32
31.84
36.45
35.98
315
125
36
36
35.84
41.01
40.5
355
140
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