【ねじ・ボルト】ねじの規格-インチねじ
ねじの呼び |
UNCの基準寸法(単位:mm) |
UNFの基準寸法(単位:mm) |
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ねじ山数 |
ピッチP |
めねじ |
ねじ山数 |
ピッチP |
めねじ |
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谷の径D |
有効径D2 |
内径D1 |
谷の径D |
有効径D2 |
内径D1 |
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おねじ |
おねじ |
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外径d |
有効径d2 |
谷の径d1 |
外径d |
有効径d2 |
谷の径d1 |
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No.0 |
– |
– |
– |
– |
– |
80 |
0.3175 |
1.524 |
1.318 |
1.181 |
No.1 |
64 |
0.3969 |
1.854 |
1.598 |
1.425 |
72 |
0.3528 |
1.854 |
1.626 |
1.473 |
No.2 |
56 |
0.4536 |
2.184 |
1.89 |
1.694 |
64 |
0.3969 |
2.184 |
1.928 |
1.755 |
No.3 |
48 |
0.5292 |
2.515 |
2.172 |
1.941 |
56 |
0.4536 |
2.515 |
2.22 |
2.024 |
No.4 |
40 |
0.635 |
2.845 |
2.433 |
2.156 |
48 |
0.5292 |
2.845 |
2.502 |
2.271 |
No.5 |
40 |
0.635 |
3.175 |
2.764 |
2.487 |
44 |
0.5773 |
3.175 |
2.799 |
2.55 |
No.6 |
32 |
0.7938 |
3.505 |
2.99 |
2.647 |
40 |
0.635 |
3.505 |
3.094 |
2.817 |
No.8 |
32 |
0.7938 |
4.166 |
3.65 |
3.307 |
36 |
0.7056 |
4.166 |
3.708 |
3.401 |
No.10 |
24 |
1.0583 |
4.826 |
4.138 |
3.68 |
32 |
0.7938 |
4.826 |
4.31 |
3.967 |
No.12 |
24 |
1.0583 |
5.486 |
4.798 |
4.341 |
28 |
0.9071 |
5.486 |
4.897 |
4.503 |
1/4 |
20 |
1.27 |
6.35 |
5.524 |
4.976 |
28 |
0.9071 |
6.35 |
5.761 |
5.367 |
5/16 |
18 |
1.4111 |
7.938 |
7.021 |
6.411 |
24 |
1.0583 |
7.938 |
7.249 |
6.792 |
3/8 |
16 |
1.5875 |
9.525 |
8.494 |
7.805 |
24 |
1.0583 |
9.525 |
8.837 |
8.379 |
7/16 |
14 |
1.8143 |
11.11 |
9.934 |
9.149 |
20 |
1.27 |
11.11 |
10.29 |
9.738 |
1/2 |
13 |
1.9538 |
12.7 |
11.43 |
10.58 |
20 |
1.27 |
12.7 |
11.87 |
11.33 |
9/16 |
12 |
2.1167 |
14.29 |
12.91 |
12 |
18 |
1.4111 |
14.29 |
13.37 |
12.76 |
5/8 |
11 |
2.3091 |
15.88 |
14.38 |
13.38 |
18 |
1.4111 |
15.88 |
14.96 |
14.35 |
3/4 |
10 |
2.54 |
19.05 |
17.4 |
16.3 |
16 |
1.5875 |
19.05 |
18.02 |
17.33 |
7/8 |
9 |
2.8222 |
22.23 |
20.39 |
19.17 |
14 |
1.8143 |
22.23 |
21.05 |
20.26 |
1″ |
8 |
3.175 |
25.4 |
23.34 |
21.96 |
12 |
2.1167 |
25.4 |
24.03 |
23.11 |
1″ 1/8 |
7 |
3.6286 |
28.58 |
26.22 |
24.65 |
12 |
2.1167 |
28.58 |
27.2 |
26.28 |
1″ 1/4 |
7 |
3.6286 |
31.75 |
29.39 |
27.82 |
12 |
2.1167 |
31.75 |
30.38 |
29.46 |
1″ 3/8 |
6 |
4.2333 |
34.93 |
32.17 |
30.34 |
12 |
2.1167 |
34.93 |
33.55 |
32.63 |
1″ 1/2 |
6 |
4.2333 |
38.1 |
35.35 |
33.52 |
12 |
2.1167 |
38.1 |
36.73 |
35.81 |
1″ 3/4 |
5 |
5.08 |
44.45 |
41.15 |
38.95 |
- |
- |
- |
- |
- |
2″ |
4″ 1/2 |
5.6444 |
50.8 |
47.14 |
44.69 |
- |
- |
- |
- |
- |
2″ 1/4 |
4″ 1/2 |
5.6444 |
57.15 |
53.49 |
51.04 |
- |
- |
- |
- |
- |
2″ 1/2 |
4 |
6.35 |
63.5 |
59.38 |
56.63 |
- |
- |
- |
- |
- |
2″ 3/4 |
4 |
6.35 |
69.85 |
65.73 |
62.98 |
- |
- |
- |
- |
- |
3″ |
4 |
6.35 |
76.2 |
72.08 |
69.33 |
- |
- |
- |
- |
- |
3″ 1/4 |
4 |
6.35 |
82.55 |
78.43 |
75.68 |
- |
- |
- |
- |
- |
3″ 1/2 |
4 |
6.35 |
88.9 |
84.78 |
82.03 |
- |
- |
- |
- |
- |
3″ 3/4 |
4 |
6.35 |
95.25 |
91.13 |
88.38 |
- |
- |
- |
- |
- |
4″ |
4 |
6.35 |
101.6 |
97.48 |
94.73 |
- |
- |
- |
- |
- |