 |
 |
|
| ねじの呼び |
山数 |
ねじ基準径
|
基準径の位置
a |
二面幅
B |
長さ
l |
| 外径 |
有効径 |
谷径 |
基準
寸法 |
許容差 |
基準
寸法 |
許容差 |
基準
寸法 |
許容差 |
R1/16
|
28
|
7.723
|
7.142 |
6.561 |
3.97 |
±0.91 |
4 |
+0.10
+0.03 |
7 |
±0.4 |
R1/8
|
28
|
9.728
|
9.147 |
8.566 |
3.97 |
±0.91 |
5 |
+0.10
+0.03 |
8 |
±0.4 |
R1/4
|
19
|
13.157
|
12.301 |
11.445 |
6.01 |
±1.34 |
6 |
+0.10
+0.03 |
11 |
±0.4 |
R3/8
|
19
|
16.662
|
15.806 |
14.950 |
6.35 |
±1.34 |
8 |
+0.13
+0.04 |
12 |
±0.5 |
R1/2
|
14
|
20.955
|
19.793 |
18.631 |
8.16 |
±1.81 |
10 |
+0.13
+0.04 |
15 |
±0.5 |
| R3/4 |
14 |
26.441 |
25.279 |
24.117 |
9.53 |
±1.81 |
14 |
+0.23
+0.05 |
17 |
±0.5 |
| R1" |
11 |
33.249 |
31.770 |
30.291 |
10.39 |
±2.31 |
17 |
+0.23
+0.05 |
19 |
±0.5 |
| R1"1/4 |
11 |
41.910 |
40.431 |
38.952 |
12.70 |
±2.31 |
22 |
+0.275
+0.065 |
21.5 |
±0.5 |
| R1"1/2 |
11 |
47.803 |
46.324 |
44.845 |
12.70 |
±2.31 |
22 |
+0.275
+0.065 |
21.5 |
±0.5 |
|