美制粗螺纹

美制粗螺纹 规格 (UNC) NO.1-64(1.854) NO.2-56(2.184) NO.3-48(2.515) NO.4-40(2.845) NO.5-40(3.175) NO.6-32(3.505) NO.8-32(4.166) NO.10-24(4.826) NO.12-24(5.486) 1/4 -20 5/16 -18 3/8 -16 7/16 -14 1/2 -13 9/16 -12 5/8 -11 3/4 -10 7/8 -9 1-8 1-1/8-7 1-1/4-7 1-3/8-6 1-1/2-6 1-3/4-5 2-4-1/2 2级牙钻孔径 标准径 1.55 1.80 2.10 2.30 2.60 2.80 3.40 3.90 4.50 5.10 6.60 8.00 9.40 10.80 12.20 13.60 16.50 19.50 22.20 25.00 28.20 30.80 34.00 39.50 45.20 最大 1.582 1.871 2.146 2.385 2.697 2.895 3.530 3.962 4.597 5.257 6.731 8.153 9.550 11.023 12.446 12.868 18.840 19.761 22.606 25.349 28.524 31.115 34.290 39.827 45.593 精度等级 规格 NO.2-56UNC NO.3-48 NO.4-40 NO.5-40 NO.6-32 NO.8-32 NO.10-24 NO.12-24 1/4-20 5/16-18 3/8-16 7/16-14 1/2-13 NO.2-64UNF NO.3-56 NO.4-48 NO.5-44 NO.6-40 NO.8-36 NO.10-32 NO.12-28 1/4-28 5/16-24 3/8-24 7/16-20 1/2-20 G4-G6 1.94 2.23 2.50 2.83 3.07 3.73 4.24 4.90 1.97 2.27 2.56 2.86 3.16 3.78 4.39 4.99 5.85 7.36 G7-G8 3.77 4.30 4.96 5.72 7.24 8.74 10.20 11.27 4.43 5.04 5.90 7.41 9.00 10.48 12.07 G9 8.81 10.30 11.82 10.54 12.13 最小 1.425 1.695 1.941 2.157 2.487 2.642 3.302 3.683 4.344 4.979 6.401 7.798 9.144 10.592 11.989 13.386 16.307 19.177 21.971 24.638 27.813 30.353 33.528 38.964 44.679 规格 (UNF) NO.0-80(1.524) NO.1-72(1.854) NO.2-64(2.184) NO.3-56(2.515) NO.4-48(2.845) NO.5-44(3.175) NO.6-40(3.505) NO.8-36(4.166) NO.10-32(4.826) NO.12-28(5.846) 1/4-28 5/16-24 3/8-24 7/16-20 1/2-20 9/16-18 5/8-18 3/4-16 7/8-14 1-12 1-1/8-12 1-1/4-12 1-3/8-12 1-1/2-12

美制细螺纹 2级牙钻孔径 标准径 1.25 1.55 1.85 2.10 2.40 2.70 2.90 3.50 4.10 4.60 5.50 6.90 8.50 9.90 11.50 12.90 14.50 17.50 20.50 23.20 26.50 29.50 32.80 36.0 美制特细螺纹 规格 (UNEF) NO.12-32 1/4--32 5/16-32 3/8-32 7/16-28 1/2-28 9/16-24 5/8-24 3/4-20 7/8-20 1-20 2级牙钻孔径 标准径 4.70 5.60 7.10 8.70 10.20 11.80 13.20 14.80 17.80 21.00 24.00 美制管螺纹 规格 1/16-27 1/8-27 1/4-18 3/8-18 1/2-14 3/4-14 1-11-1/2 1-1/4-11-1/2 1-1/2-11-1/2 2-11-1/2 规格 2BA 3BA 4BA 5BA 6BA 钻孔径 NPT 使用绞刀时 不用绞刀时 6.10 6.25 8.33 8.43 10.72 11.13 14.27 14.27 17.48 17.86 22.63 23.01 28.58 28.98 37.31 37.69 43.66 44.04 55.58 55.96 钻孔径 4.0-4.2 3.0-3.2 2.7-2.8 2.4-2.5 NPS 6.35 8.74 11.13 14.68 18.26 23.42 29.36 38.10 44.45 56.36 最大 4.826 5.690 7.264 8.865 10.338 11.938 13.386 14.986 17.958 21.133 24.308 最小 4.623 5.486 7.087 8.661 10.135 11.709 13.132 14.732 17.678 20.853 24.028 最大 1.305 1.612 1.912 2.197 2.458 2.740 3.022 3.606 4.165 4.724 5.588 7.035 8.636 10.033 11.607 13.081 14.681 17.678 20.675 23.571 26.746 29.921 33.096 36.271 最小 1.182 1.474 1.756 2.025 2.271 2.551 2.820 3.404 3.963 4.496 5.360 6.782 8.382 9.729 11.329 12.751 14.351 17.323 20.270 23.114 26.289 29.464 32.639 35.814

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