攻牙底孔参数

1、公制粗牙螺紋 JIS B 0209-1982(單位：mm) 螺纹尺寸 钻头直径 螺纹下孔徑 內螺紋小徑 最小直径 M 1 × 0.25 1.1 × 0.25 1.2 × 0.25 1.4 × 0.3 1.6 × 0.35 1.8 × 0.35 2 × 0.4 2.2 × 0.45 2.5 × 0.45 3 × 0.5 3.5 × 0.6 4 × 0.7 4.5 × 0.75 5 × 0.8 6 × 1 7 × 1 8 × 1.25 9 × 1.25 10 × 1.5 11 × 1.5 12 × 1.75 14 × 2 16 × 2 18 × 2.5 20 × 2.5 22 × 2.5 24 × 3 27 × 3 30 × 3.5 33 × 3.5 36 × 4 39 × 4 42 × 4.5 45 × 4.5 48 × 5 0.75 0.85 0.95 1.1 1.25 1.45 1.6 1.75 2.1 2.5 2.9 3.3 3.8 4.2 5 6 6.8 7.8 8.5 9.5 10.3 12 14 15.5 17.5 19.5 21 24 26.5 29.5 32 35 37.5 40.5 43 0.78 (80%) 0.88 (80%) 0.98 (80%) 1.14 (80%) 1.32 (75%) 1.52 (75%) 1.65 (80%) 1.83 (75%) 2.13 (75%) 2.59 (75%) 3.01 (75%) 3.39 (80%) 3.85 (80%) 4.31 (80%) 5.13 (80%) 6.13 (80%) 6.85 (85%) 7.85 (85%) 8.62 (85%) 9.62 (85%) 10.40 (85%) 12.2 (85%) 14.2 (85%) 15.7 (85%) 17.7 (85%) 19.2 (85%) 21.2 (85%) 24.2 (85%) 26.6 (90%) 29.6 (90%) 32.1 (90%) 35.1 (90%) 37.6 (90%) 40.6 (90%) 43.1 (90%) 0.729 0.829 0.929 1.075 1.221 1.421 1.567 1.713 2.013 2.459 2.850 3.242 3.688 4.134 4.917 5.917 6.7 7.7 8.376 9.376 10.106 11.835 13.835 15.294 17.294 19.294 20.752 23.752 26.211 29.211 31.670 34.670 37.129 40.129 42.587 最大直径 0.785 0.885 0.985 1.142 1.321 1.521 1.679 1.838 2.138 2.599 3.010 3.422 3.878 4.334 5.153 6.153 6.912 7.912 8.676 9.676 10.441 12.210 14.210 15.744 17.744 19.744 21.252 24.252 26.771 29.771 32.270 35.270 37.799 40.799 43.297

註(1)M1.4以下等級：5H、M1.6以上等級：6H (2)基於JIS B 0209-1982標準

2、公制細牙螺紋-01 JIS B 0211-1982(單位：mm) 螺纹尺寸 钻头直径 螺纹下孔徑 內螺紋小徑 最小直径 2.2 2.22 (75%) 2.121 M 2.5 × 0.35 2.7 2.72 (75%) 2.621 3 × 0.35 3.2 3.22 (75%) 3.121 3.5 × 0.35 3.5 3.59 (75%) 3.459 4 × 0.5 最大直径 2.221 2.721 3.221 3.599 4 4.09 (75%) 3.959 4.099 4.5 × 0.5 4.5 4.59 (75%) 4.459 4.599 5 × 0.5 5 5.09 (75%) 4.959 5.099 5.5 × 0.5 5.3 5.35 (80%) 5.188 5.378 6 × 0.75 6.3 6.35 (80%) 6.188 6.378 7 × 0.75 7 7.13 (80%) 6.917 7.153 8 × 1 7.3 7.35 (80%) 7.188 7.378 8 × 0.75 8 8.13 (80%) 7.917 8.153 9 × 1 8.3 8.35 (80%) 8.188 8.378 9 × 0.75 8.8 8.85 (85%) 8.7 8.912 10 × 1.25 9 9.13 (80%) 8.917 9.153 10 × 1 9.3 9.35 (80%) 9.188 9.378 10 × 0.75 10 10.13 (80%) 9.917 10.153 11 × 1 10.3 10.35 (80%) 10.188 10.378 11 × 0.75 10.5 10.62 (85%) 10.376 10.676 12 × 1.5 10.8 10.85 (85%) 10.7 10.912 12 × 1.25 11 11.13 (80%) 10.917 11.153 12 × 1 12.5 12.62 (85%) 12.376 12.676 14 × 1.5 13 13.13 (80%) 12.917 13.153 14 × 1 13.5 13.62 (85%) 13.376 13.676 15 × 1.5 14 14.13 (80%) 13.917 14.153 15 × 1 14.5 14.62 (85%) 14.376 14.676 16 × 1.5 15 15.13 (80%) 14.917 15.153 16 × 1 15.5 15.62 (85%) 15.376 15.676 17 × 1.5 16 16.13 (80%) 15.917 16.153 17 × 1 16 16.2 (85%) 15.835 16.210 18 × 2 16.5 16.62 (85%) 16.376 16.676 18 × 1.5 17 17.13 (80%) 16.917 17.153 18 × 1 18 18.2 (85%) 17.835 18.210 20 × 2 18.5 18.62 (85%) 18.376 18.676 20 × 1.5 19 19.13 (80%) 18.917 19.153 20 × 1 20 20.2 (85%) 19.835 20.210 22 × 2 20.5 20.62 (85%) 20.376 20.676 22 × 1.5 21 21.13 (80%) 20.917 21.153 22 × 1 22 22.2 (85%) 21.835 22.210 24 × 2 22.5 22.62 (85%) 22.376 22.676 24 × 1.5 23 23.13 (80%) 22.917 23.153 24 × 1 23 23.2 (85%) 22.835 23.210 25 × 2 23.5 23.62 (85%) 23.376 23.676 25 × 1.5 24 24.13 (80%) 23.917 24.153 25 × 1 公制細牙螺紋-02 JIS B 0211-1982(單位：mm) 螺纹尺寸 钻头直径 螺纹下孔徑 內螺紋小徑 最小直径 最大直径 24.62 (85%) 24.376 24.676 M 26 × 1.5 24.5 25 25.2 (85%) 24.835 25.210 27 × 2 25.5 25.62 (85%) 25.376 25.676 27 × 1.5 26 26.13 (80%) 25.917 26.153 27 × 1 26 26.2 (85%) 25.835 26.210 28 × 2 26.5 26.62 (85%) 26.376 26.676 28 × 1.5 27 27.13 (80%) 26.917 27.153 28 × 1 30 × 3 30 × 2 30 × 1.5 30 × 1 32 × 2 32 × 1.5 33 × 3 33 × 2 33 × 1.5 35 × 1.5 36 × 3 36 × 2 36 × 1.5 38 × 1.5 39 × 3 39 × 2 39 × 1.5 40 × 3 40 × 2 40 × 1.5 42 × 4 42 × 3 42 × 2 42 × 1.5 45 × 4 45 × 3 45 × 2 45 × 1.5 48 × 4 48 × 3 48 × 2 27 28 28.5 29 30 30.5 30 31 31.5 33.5 33 34 34.5 36.5 36 37 37.5 37 38 38.5 38 39 40 40.5 41 42 43 43.5 44 45 46 46.5 46.376 48 × 1.5 47 46.752 50 × 3 48 47.835 50 × 2 48.5 48.376 50 × 1.5 註(1)等級：6H (2)基於JIS B 0211-1982標準

3、美制粗牙螺紋 (單位：mm) 螺纹尺寸 钻头直径 2B级螺纹下孔徑 內螺紋小徑 最小直径 NO.1 -UNC 1.55 1.57 (65%) 1.425 2 -56 1.8 1.86 (65%) 1.695 3 -48 2.1 2.14 (65%) 1.941 4 -40 2.3 2.36 (70%) 2.157 5 -40 2.6 2.69 (70%) 2.487 6 -32 2.8 2.86 (75%) 2.2 8 -32 3.4 3.52 (75%) 3.302 10 -24 3.9 3.91 (80%) 3.683 12 -24 4.5 4.57 (80%) 4.344 1/4 -20 5.1 5.25 (80%) 4.979 5/16 -18 6.6 6.72 (80%) 6.401 27.2 (85%) 28.2 (85%) 28.62 (85%) 29.13 (80%) 30.2 (85%) 30.62 (85%) 30.2 (85%) 31.2 (85%) 31.62 (85%) 33.62 (85%) 33.2 (85%) 34.2 (85%) 34.62 (85%) 36.62 (85%) 36.2 (85%) 37.2 (85%) 37.62 (85%) 37.2 (85%) 38.2 (85%) 38.62 (85%) 38.1 (90%) 39.2 (85%) 40.2 (85%) 40.62 (85%) 41.1 (90%) 42.2 (85%) 43.2 (85%) 43.62 (85%) 44.1 (90%) 45.2 (85%) 46.2 (85%) 46.62 (85%) 47.2 (85%) 48.2 (85%) 48.62 (85%) 26.752 27.835 28.376 28.917 29.835 30.376 29.752 30.835 31.376 33.376 32.752 33.835 34.376 36.376 35.752 36.835 37.376 36.752 37.835 38.376 37.670 38.752 39.835 40.376 40.670 41.752 42.835 43.376 43.670 44.752 45.835 27.252 28.210 28.676 29.153 30.210 30.676 30.252 31.210 31.676 33.676 33.252 34.210 34.676 36.676 36.252 37.210 37.676 37.252 38.210 38.676 38.270 39.252 40.210 40.676 41.270 42.252 43.210 43.676 44.270 45.252 46.210 46.676 47.252 48.210 48.676 最大直径 1.582 1.871 2.146 2.385 2.697 2.5 3.530 3.962 4.597 5.257 6.731 3/8 -16 8 8.15 (80%) 7.798 8.153 7/16 -14 9.4 9.50 (80%) 9.144 9.550 1/2 -13 10.8 11.0 (80%) 10.592 11.023 9/16 -12 12.2 12.3 (85%) 11.9 12.446 5/8 -11 13.6 13.8 (85%) 13.386 13.868 3/4 -10 16.5 16.8 (80%) 16.307 16.840 7/8 - 9 19.5 19.6 (85%) 19.177 19.761 1 - 8 22.2 22.5 (85%) 21.971 22.606 1 1/8 - 7 25 25.2 (85%) 24.638 25.349 1 1/4 - 7 28.2 28.4 (85%) 27.813 28.524 1 3/8 - 6 30.8 31.0 (85%) 30.353 31.115 1 1/2 - 6 34 34.2 (85%) 33.528 34.290 1 3/4 - 5 39.5 39.8 (85%) 38.9 39.827 2 - 4 45.2 45.3 (90%) 44.679 45.593

4、美制細牙螺紋 (單位：mm) 螺纹尺寸 钻头直2B级螺纹下孔徑 內螺紋小徑 径 最小直径 最大直径 NO. 0 -80UNF 1.25 1.30 (65%) 1.182 1.305 1 -72 1.55 1.61 (65%) 1.474 1.612 2 - 1.85 1.90 (65%) 1.756 1.912 3 -56 2.1 2.17 (70%) 2.025 2.197 4 -48 2.4 2.44 (70%) 2.271 2.458 5 -44 2.7 2.74 (70%) 2.551 2.740 6 -40 2.9 3.02 (70%) 2.820 3.022 8 -36 3.5 3.59 (75%) 3.404 3.606 10 -32 4.1 4.14 (80%) 3.963 4.165 12 -28 4.6 4.70 (80%) 4.496 4.724 1/4 -28 5.5 5.56 (80%) 5.360 5.588 5/16 -24 6.9 7.02 (80%) 6.782 7.035 3/8 -24 8.5 8.61 (80%) 8.382 8.636 7/16 -20 9.9 10.01 (80%) 9.729 10.033 1/2 -20 11.5 11.60 (80%) 11.329 11.607 9/16 -18 12.9 13.07 (80%) 12.751 13.081 5/8 -18 14.5 14.65 (80%) 14.351 14.681 3/4 -16 17.5 17.59 (85%) 17.323 17.678 7/8 -14 20.5 20.6 (85%) 20.270 20.675 1 -12 23.2 23.5 (85%) 23.114 23.571 1 1/8 -12 26.5 26.7 (80%) 26.2 26.746 1 1/4 -12 29.5 29.9 (80%) 29.4 29.921 1 3/8 -12 32.8 33.0 (85%) 32.639 33.096 1 1/2 -12 36 36.2 (85%) 35.814 36.271 5、英制粗牙螺紋 (單位：mm) 螺紋尺寸 下 孔 徑 嵌 合 率 A列(硬材B列(軟材A列直徑 B列直徑 內螺紋最小內螺紋最大質) 質) 徑 徑 W 1/8 2.6 2.5 70.7 83.0 70.0 88.3 3/16 3.7 3.6 78.4 85.8 70.0 88.3 1/4 5.1 5.0 76.9 83.0 70.5 88.3 5/16 6.6 6.5 74.0 99.5 70.1 88.4 3/8 8.0 7.9 75.0 80.0 69.5 88.2 7/16 9.4 9.3 73.7 80.0 69.0 88.8 1/2 10.7 10.5 73.8 81.2 69.0 88.2 9/16 12.3 12.0 73.4 84.4 69.0 88.2 5/8 13.7 13.5 73.5 80.3 69.6 88.5 3/4 16.7 16.5 72.3 78.4 69.6 88.3 7/8 19.5 19.3 75.4 80.9 70.1 88.4 1 22.4 22.0 73.8 83.6 71.0 88.2 1 1/8 25.0 24.8 76.9 81.3 72.0 88.4 1 1/4 28.3 28.0 74.3 80.7 72.0 88.4 1 3/8 30.5 30.3 81.6 85.3 73.8 88.6 1 1/2 33.8 33.5 79.3 84.8 73.8 88.6 1 5/8 36.0 35.7 81.1 85.7 74.8 88.3 1 3/4 39.2 39.0 80.7 83.8 74.8 88.3 1 7/8 41.8 41.5 80.6 84.7 74.7 88.4 2 45.0 44.7 80.2 84.4 74.7 88.4 6、英制管用螺紋 (單位：mm) JIS B 0203 JIS B 2301 管用螺紋尺錐管內螺紋Rc(PT) 平行內螺紋Rp(PS) 錐管內螺紋 寸 計 算 值 下 孔 徑 計 算 值 下 孔 徑 計 算 值 1/16 6.230 6.2 6.490 6.5 － 1/8 8.235 8.2 8.495 8.5 8.191 1/4 10.941 10.9 11.341 11.4 10.945 3/8 14.428 14.4 14.846 14.9 14.388 1/2 17.950 18 18.4 18.5 17.943 3/4 23.349 23 23.975 24 23.305 1 29.423 29 30.111 30 29.353 1 1/4 37.940 38 38.772 39 37.0 1 1/2 43.833 44 44.565 45 43.720 2 55.412 55 56.476 56 55.406 2 1/2 70.701 71 72.009 72 70.788 3 83.201 83 84.709 85 83.3 3 1/2 95.547 96 97.155 97 95.747 4 107.834 108 109.855 110 108.322 5 133.110 133 135.255 135 133.597 6 158.510 159 160.655 161 158.810 7 183.360 183 185.954 186 8 208.560 209 211.354 212 9 233.960 234 236.754 237 10 259.166 259 262.154 262 12 309.747 310 312.875 313 7、美制管用耐密斜行螺紋(NPTF‧NPSF) (單位：mm) 管用螺紋尺斜行螺紋(NPTF) 平行螺紋(NPSF) 寸 鑽頭直徑 鑽頭直徑 使用鉸刀場合 下 孔 徑 － 8.2 10.9 14.4 18 23 29 38 43 55 70 83 95 108 133 158 不使用鉸刀合 1/16 1/8 － 21/ 0.234 ( 5.94) 0.328 ( 8.33) 0.246 ( 6.25) 0.339 ( 8.61) 1/4 11/32 0.250 ( 6.35) 0.344 ( 8.74) 7/16 0.438 (11.13) － 37/ 0.578 (14.68) 37/ 45/ 0.703 (17.86) 23/32 59/ 0.922 (23.42) － 1 5/32 1.156 (29.36) 1 5/32 1 1.500 (38.10) － 1/2 1 1/2 1 45/ 1.703 (43.26) 1 1.734 (44.04) － 47/ 2 2 3/16 2.188 (55.58) 2 7/32 2.219 (56.36) － 2 1/2 2 19/32 2.594 (65.) 2 2.1 (67.08) － 41/ 上述鑽頭直徑來源於美制管用耐密斜行螺紋ANSI B1.20.3—1957 Dryseal Pipe Threads (Inch)標準 8、公制螺紋(NRT) (單位：mm) 螺紋尺寸 1級螺紋用下孔徑 2級螺紋用下孔徑 RH RH 最小～最大 最小～最大 精度 精度 (嵌合率％) (嵌合率％) 2 0.87 ~ 0. (100~85) 4 0.90 ~0.92 (100~80) M 1 ×0.25 2 0.97 ~ 0.99 (100~85) 4 1.00 ~1.02 (100~80) 1.1×0.25 2 1.07 ~ 1.09 (100~85) 4 1.10 ~1.12 (100~80) 1.2×0.25 2 1.244~ 1.263 (100~85) 4 1.270~ 1.294 (100~80) 1.4×0.3 2 1.51 ~ 1.54 (100~80) 4 1.54 ~ 1.58 (100~75) 1.7×0.35 2 1.78 ~ 1.82 (100~80) 4 1.81 ~ 1.85 (100~75) 2 ×0.4 2 2.08 ~ 2.12 (100~80) 4 2.11 ~ 2.15 (100~75) 2.3×0.4 2 2.25 ~ 2.29 (100~80) 4 2.28 ~ 2.33 (100~75) 2.5×0.45 2 2.35 ~ 2.39 (100~80) 4 2.38 ~ 2.43 (100~75) 2.6×0.45 3 2.74 ~ 2.78 (100~80) 5 2.76 ~ 2.81 (100~75) 3 ×0.5 3 3.18 ~ 3.21 (100~85) 5 3.20 ~ 3.26 (100~75) 3.5×0.6 4 3.63 ~ 3.67 (100~85) 6 3.65 ~ 3.70 (100~85) 4 ×0.7 4 4.57 ~ 4.62 (100~85) 6 4.59 ~ 4.66 (100~80) 5 ×0.8 4 5.45 ~ 5.51 (100~85) 7 5.48 ~ 5.57 (100~80) 6 ×1 4 6.45 ~ 6.51 (100~85) 7 6.48 ~ 6.57 (100~80) 7 ×1 5 7.31 ~ 7.38 (100~85) 7 7.34 ~ 7.41 (100~85) 8 ×1.25 4 7.45 ~ 7.51 (100~85) 7 7.48 ~ 7.57 (100~80) 8 ×1 5 9.16 ~ 9.22 (100~90) 7 9.18 ~ 9.28 (100~85) 10 ×1.5 5 9.31 ~ 9.38 (100~85) 7 9.34 ~ 9.41 (100~85) 10 ×1.25 5 9.46 ~ 9.52 (100~85) 7 9.48 ~ 9.57 (100~80) 10 ×1 5 11.01 ~11.08 (100~90) 8 11.05 ~11.15 (100~85) 12 ×1.75 5 11.16 ~11.22 (100~90) 7 11.18 ~11.28 (100~85) 12 ×1.5 5 11.31 ~11.38 (100~85) 7 11.34 ~11.41 (100~85) 12 ×1.25 5 11.46 ~11.52 (100~85) 7 11.48 ~11.57 (100~80) 12 ×1 6 12.83 ~12.95 (100~90) 10 12.92 ~13.04 (100~85) 14 ×2 5 13.16 ~13.22 (100~90) 9 13.21 ~13.30 (100~85) 14 ×1.5 6 14.87 ~14.95 (100~90) 10 14.92 ~15.04 (100~85) 16 ×2 5 15.16 ~15.22 (100~90) 9 15.21 ~15.30 (100~80) 16 ×1.5 6 16.57 ~16.67 (100~90) 11 16.63 ~16.78 (100~85) 18 ×2.5 6 17.17 ~17.23 (100~90) 10 17.22 ~17.31 (100~85) 18 ×1.5 6 18.57 ~18.67 (100~90) 11 18.63 ~18.78 (100~85) 20 ×2.5 6 19.17 ~19.23 (100~90) 10 19.22 ~19.31 (100~85) 20 ×1.5 9、美制粗牙螺紋(NRT) (單位：mm) 螺紋尺寸 2B級螺紋用下孔徑 3B級螺紋用下孔徑 RH RH 最小～最大 最小～最大 1/4 3/8 1/2 3/4 1 1 1/4 27/ 9/16 11/16 57/ 1 1/8 1 15/32 0.422 (10.72) 0.562 (14.27) 0.688 (17.48) 0.1 (22.63) 1.125 (28.58) 1.469 (37.31) 0.444 (11.28) 0.578 (14.68) 0.719 (18.26) 0.922 (23.42) 1.156 (29.36) － － － － 精 度 NO. 2-56UNC 4 3-48 4 4-40 5 5-40 5 6-32 5 8-32 6 10-24 6 12-24 6 1/4 -20 6 5/16 -18 7 3/8 -16 7 7/16 -14 7 1/2 -13 8 9/16 -12 10 5/8 -11 11 3/4 -10 12 7/8 - 9 12 1 - 8 13 (嵌合率％) 1.96 ~ 2.02 (100~65) 2.25 ~ 2.32 (100~65) 2.52 ~ 2.60 (100~70) 2.86 ~ 2.93 (100~70) 3.09 ~ 3.17 (100~75) 3.75 ~ 3.83 (100~75) 4.26 ~ 4.35 (100~80) 4.92 ~ 5.01 (100~80) 5.66 ~ 5.76 (100~80) 7.18 ~ 7.29 (100~80) 8.66 ~ 8.78 (100~80) 10.11 ~10.25 (100~80) 10.62 ~11.78 (100~80) 13.14 ~13.27 (100~85) 14.62 ~14.76 (100~85) 17.67 ~17.88 (100~80) 20.68 ~20.85 (100~85) 23.65 ~23.84 (100~85) 精 度 3 3 3 3 3 4 4 4 4 5 5 5 6 8 8 9 9 10 (嵌合率％) 1.95 ~ 2.01 (100~65) 2.23 ~ 2.31 (100~65) 2.50 ~ 2.58 (100~70) 2.83 ~ 2.91 (100~70) 3.06 ~ 3.14 (100~75) 3.74 ~ 3.82 (100~75) 4.24 ~ 4.32 (100~80) 4.90 ~ 4.96 (100~85) 5. ~ 5.74 (100~80) 7.15 ~ 7.24 (100~85) 8.63 ~ 8.73 (100~85) 10.08 ~10.19 (100~85) 11.60 ~11.68 (100~90) 13.11 ~13.24 (100~85) 14.58 ~14.67 (100~90) 17.63 ~17.74 (100~90) 20. ~20.75 (100~90) 23.61 ~23.74 (100~90)