106
Te
ch
n
ic
al
d
at
a
1. The recommended nominal length (
l
) for nominal designation is indicated within the gray portion.
2. Dimensional symbols correspond to the JIS B 0143.
3. The configuration of hexagon socket base can be either cone or borer base. For a borer base, the bore depth must not be 1.2 times or more than the hexagon socket depth t.
e
s
df
t
l
d
t
dp
Cone base
About 45°
*2
90° or 120°
*1
Incomplete thread
(2P and below)
Borer base
The inlet of hexagon
socket can be rounded
or chamfered.
e
s
df
t
l
d
t
dp
Cone base
About
45°
*2
About 120°
90° or 120°
*1
Incomplete thread
(2P and below)
Borer base
The inlet of hexagon
socket can be rounded
or chamfered.
Configuration and Dimension of Hexagon
Socket Set Screw
(Excerpts from JIS B 1177-1997)
Technical Data
**1 For the nominal length (
l
)
that is shorter than the stepped double line, perform a 120° of
chamfering.
**2 The angle of approx. 45o corresponds to the slope portion below the core diameter.
**3 e minimum= 1.14 x s minimum. Nominal diameter M1.6, M2 and M2.5 are excluded.
**4 For s, use the specified hexagon socket gauge to examine.
Nominal designation of screw (d)
M1.6
M2
M2.5
M3
M4
M5
M6
M8
M10
M12
M16
M20
M24
Pitch (P)
0.35
0.4
0.45
0.5
0.7
0.8
1
1.25
1.5
1.75
2
2.5
3
dp
Maximum
0.80
1.00
1.5
2.00
2.50
3.5
4
5.5
7.00
8.50
12.00
15.00
18.00
Minimum
0.55
0.75
1.25
1.75
2.25
3.2
3.7
5.2
6.64
8.14
11.57
14.57
17.57
dz
Maximum
0.80
1.00
1.20
1.40
2.00
2.50
3.00
5.0
6.0
8.00
10.00
14.00
16.00
Minimum
0.55
0.75
0.95
1.15
1.75
2.25
2.75
4.7
5.7
7.64
9.64
13.57
15.57
df
Almost the diameter of screw groove
e*
3
Minimum
0.803
1.003
1.427
1.73
2.3
2.87
3.44
4.58
5.72
6.86
9.15
11.43
13.72
s*
4
Designation
0.7
0.9
1.3
1.5
2
2.5
3
4
5
6
8
10
12
Maximum
0.724
0.902
1.295
1.545
2.045
2.560
3.071
4.084
5.084
6.095
8.115
10.115
12.142
Minimum
0.711
0.889
1.270
1.520
2.020
2.520
3.020
4.020
5.020
6.020
8.025
10.025
12.032
t
Minimum*
5
0.7
0.8
1.2
1.2
1.5
2
2
3
4
4.8
6.4
8
10
Minimum*
6
1.5
1.7
2
2
2.5
3
3.5
5
6
8
10
12
15
l
(Reference) Outline mass per 1000 units / kg (Density:7.85kg/dm
3
)
Nominal length
Min.
Max.
Flat
point
2
1.8
2.2
0.021
0.029
0.05
0.059
2.5
2.3
2.7
0.025
0.037
0.063
0.08
0.099
3
2.8
3.2
0.029
0.044
0.075
0.1
0.14
0.2
4
3.76
4.24
0.037
0.059
0.1
0.14
0.22
0.32
0.41
5
4.76
5.24
0.046
0.074
0.125
0.18
0.3
0.44
0.585
0.945
6
5.76
6.24
0.054
0.089
0.15
0.22
0.38
0.56
0.76
1.26
1.77
8
7.71
8.29
0.07
0.119
0.199
0.3
0.54
0.8
1.11
1.89
2.78
4
10
9.71
10.29
0.148
0.249
0.38
0.7
1.04
1.46
2.52
3.78
5.4
8.5
12
11.65
12.35
0.299
0.46
0.86
1.28
1.81
3.15
4.78
6.8
11.1
15.8
16
15.65
16.35
0.62
1.18
1.76
2.51
4.41
6.78
9.6
16.3
24.1
30
20
19.58
20.42
1.49
2.24
3.21
5.67
8.76
12.4
21.5
32.3
42
25
24.58
25.42
2.84
4.09
7.25
11.2
15.9
28
42.6
57
30
29.58
30.42
4.94
8.82
13.7
19.4
34.6
52.9
72
35
34.5
35.5
10.4
16.2
22.9
41.1
63.2
87
40
39.5
40.5
12
18.7
26.4
47.7
73.5
102
45
44.5
45.5
21.2
29.9
54.2
83.8
117
50
49.5
50.5
23.7
33.4
60.7
94.1
132
55
54.4
55.6
36.8
67.3
104
147
60
59.4
60.6
40.3
73.7
115
162
Con-
cave
point
2
1.8
2.2
0.019
0.029
0.05
2.5
2.3
2.7
0.025
0.037
0.063
0.079
3
2.8
3.2
0.029
0.044
0.075
0.1
0.155
4
3.76
4.24
0.037
0.059
0.1
0.14
0.23
0.3
5
4.76
5.24
0.046
0.074
0.125
0.18
0.305
0.42
0.565
6
5.76
6.24
0.054
0.089
0.15
0.22
0.38
0.54
0.74
1.25
8
7.71
8.29
0.07
0.119
0.199
0.3
0.53
0.78
1.09
1.88
2.71
10
9.71
10.29
0.148
0.249
0.38
0.68
1.02
1.44
2.51
3.72
5.3
12
11.65
12.35
0.299
0.46
0.83
1.26
1.79
3.14
4.73
6.7
10.5
16
15.65
16.35
0.62
1.13
1.74
2.49
4.4
6.73
9.5
15.7
22.9
20
19.58
20.42
1.42
2.22
3.19
5.66
8.72
12.3
20.9
31.1
40.2
25
24.58
25.42
2.82
4.07
7.24
11.2
15.8
27.4
41.4
55.2
30
29.58
30.42
4.94
8.81
13.7
19.3
33.9
51.7
70.3
35
34.5
35.5
10.4
16.2
22.7
40.4
62
85.3
40
39.5
40.5
12
18.7
26.2
46.9
72.3
100
45
44.5
45.5
21.2
29.7
53.3
82.6
115
50
49.5
50.5
23.6
33.2
59.8
92.6
130
55
54.4
55.6
36.6
66.3
103
145
60
59.4
60.6
40.1
72.8
114
160
Remarks
* The upper value of *5 t minimum is applicable to the nominal length (
l
)
shorter than the
stepped double line.
* The lower value of *6 t minimum is applicable to the nominal length (
l
)
longer than the
stepped double line.
Содержание COUPLINGS
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