| 表4 ユニファイ並目ねじの基準寸法(2A) |
単位mm |
| ねじの呼び |
ピッチ
(Ｐ)
(参考) |
おねじ |
外径
(ｄmax) |
谷の径
参考(ｄ１max) |
No1-64 UNC
No 2-56 UNC
No3-48 UNC |
0.3969
0.4536
0.5292 |
1.838
2.169
2.496 |
1.351
1.612
1.846 |
No 4-40 UNC
No 5-40 UNC
No 6-32 UNC |
0.6350
0.6350
0.7938 |
2.824
3.154
3.484 |
2.044
2.374
2.512 |
No 8-32 UNC
No 10-24 UNC
No12-24 UNC |
0.7938
1.0583
1.0583 |
4.142
4.800
5.461 |
3.169
3.502
4.163 |
1/4-20 UNC
5/16-18 UNC
3/8-16 UNC |
1.2700
1.4111
1.5875 |
6.322
7.907
9.491 |
4.765
6.174
7.543 |
7/16-14 UNC
1/2-13 UNC
9/16-12 UNC |
1.8143
1.9538
2.1167 |
11.076
12.661
14.246 |
8.851
10.264
11.650 |
5/8-11 UNC
3/4-10 UNC
7/8-9 UNC |
2.3091
2.5400
2.8222 |
15.834
19.004
22.176 |
13.002
15.887
18.714 |
1-8 UNC
1 1/8-7 UNC
1 1/4-7 UNC |
3.1750
3.6286
3.6286 |
25.349
28.519
31.694 |
21.452
24.066
27.241 |
1 3/8-6 UNC
1 1/2-6 UNC
1 3/4-5 UNC |
4.2333
4.2333
5.0800 |
34.864
38.039
44.381 |
29.669
32.844
38.148 |
2 - 4 1/2 UNC
2 1/4-4 1/2UNC
2 1/2-4 UNC |
5.6444
5.6444
6.3500 |
50.726
57.076
63.421 |
43.802
50.152
55.631 |
2 3/4-4 UNC
3 - 4 UNC
3 1/4-4 UNC |
6.3500
6.3500
6.3500 |
69.768
76.118
82.466 |
61.978
68.328
74.676 |
3 1/2-4 UNC
3 3/4-4 UNC
4 - 4 UNC |
6.3500
6.3500
6.3500 |
88.816
95.163
101.513 |
81.026
87.373
93.723 |
