ねじ基準寸法 ユニファイ並目ねじ
基準山形
基準寸法
単位:mm
ねじの呼び* | ユニファイ並目ねじ基準寸法 | ||||||
UNC | めねじ | ||||||
1欄 | 2欄 | ねじ山数 25.4mm につき(n) |
ピッチ(P) (参考) |
ひっかかり の高さ(H1) |
谷の径 D | 有効径 D2 | 内径 D1 |
おねじ | |||||||
外径 (d) | 有効径 (d2) | 谷の径 (d1) | |||||
No. 0 | |||||||
No. 1 | 64 | 0.3969 | 0.215 | 1.854 | 1.598 | 1.425 | |
No. 2 | 56 | 0 .4536 | 0.246 | 2.184 | 1.890 | 1.694 | |
No. 3 | 48 | 0.5292 | 0.286 | 2.515 | 2.172 | 1.941 | |
No. 4 | 40 | 0.6350 | 0.344 | 2.845 | 2.433 | 2.156 | |
No. 5 | 40 | 0.6350 | 0.344 | 3.175 | 2.764 | 2.487 | |
No. 6 | 32 | 0.7938 | 0.43 | 3.505 | 2.990 | 2.647 | |
No. 8 | 32 | 0.7938 | 0.43 | 4.166 | 3.650 | 3.307 | |
No.10 | 24 | 1.0583 | 0.573 | 4.826 | 4.138 | 3.680 | |
No.12 | 24 | 1.0583 | 0.573 | 5.486 | 4.798 | 4.341 | |
1/4 | 20 | 1.2700 | 0.687 | 6.350 | 5.524 | 4.976 | |
5/16 | 18 | 1.4111 | 0.764 | 7.938 | 7.021 | 6.411 | |
3/8 | 16 | 1.5875 | 0.859 | 9.525 | 8.494 | 7.805 | |
7/16 | 14 | 1.8143 | 0.982 | 11.112 | 9.934 | 9.149 | |
1/2 | 13 | 1.9538 | 1.058 | 12.700 | 11.430 | 10.584 | |
9/16 | 12 | 2.1167 | 1.146 | 14.288 | 12.913 | 11.996 | |
5/8 | 11 | 2.3091 | 1.25 | 15.875 | 14.376 | 13.376 | |
3/4 | 10 | 2.5400 | 1.375 | 19.050 | 17.399 | 16.299 | |
7/8 | 9 | 2.8222 | 1.528 | 22.225 | 20.391 | 19.169 | |
1 | 8 | 3.1750 | 1.719 | 25.400 | 23.338 | 21.963 | |
1 1/8 | 7 | 3.6286 | 1.964 | 28.575 | 26.218 | 24.648 | |
1 1/4 | 7 | 3.6286 | 1.964 | 31.750 | 29.393 | 27.823 | |
1 3/8 | 6 | 4.2333 | 2.291 | 34.925 | 32.174 | 30.343 | |
1 1/2 | 6 | 4.2333 | 2.291 | 38.100 | 35.349 | 33.518 | |
1 3/4 | 5 | 5.0800 | 2.75 | 44.450 | 41.151 | 38.951 | |
2 | 4 1/2 | 5.6444 | 3.055 | 50.800 | 47.135 | 44.689 | |
2 1/4 | 4 1/2 | 5.6444 | 3.055 | 57.150 | 53.485 | 51.039 | |
2 1/2 | 4 | 6.3500 | 3.437 | 63.500 | 59.375 | 56.627 | |
2 3/4 | 4 | 6.3500 | 3.437 | 69.850 | 65.725 | 62.977 | |
3 | 4 | 6.3500 | 3.437 | 76.200 | 72.075 | 69.327 | |
3 1/4 | 4 | 6.3500 | 3.437 | 82.550 | 78.425 | 75.677 | |
3 1/2 | 4 | 6.3500 | 3.437 | 88.900 | 84.775 | 82.027 | |
3 3/4 | 4 | 6.3500 | 3.437 | 95.250 | 91.125 | 88.377 | |
4 | 4 | 6.3500 | 3.437 | 101.600 | 97.475 | 94.727 |
注* 1欄を優先的に、必要に応じて2欄を選ぶ