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美制螺纹标准有哪些|天津螺旋管价格怎么样--张坤解答
美制粗螺纹 美制细螺纹 规格 (UNC) 标准径 2级牙钻孔径 规格 (UNF) 标准径 2级牙钻孔径 最大 最小 最大 最小 NO.1-64(1.854) 1.55 1.582 1.425 NO.0-80(1.524) 1.25 1.305 1.182 NO.2-56(2.184) 1.80 1.871 1.695 NO.1-72(1.854) 1.55 1.612 1.474 NO.3-48(2.515) 2.10 2.146 1.941 NO.2-64(2.184) 1.85 1.912 1.756 NO.4-40(2.845) 2.30 2.385 2.157 NO.3-56(2.515) 2.10 2.197 2.025 NO.5-40(3.175) 2.60 2.697 2.487 NO.4-48(2.845) 2.40 2.458 2.271 NO.6-32(3.505) 2.80 2.895 2.642 NO.5-44(3.175) 2.70 2.740 2.551 NO.8-32(4.166) 3.40 3.530 3.302 NO.6-40(3.505) 2.90 3.022 2.820 NO.10-24(4.826) 3.90 3.962 3.683 NO.8-36(4.166) 3.50 3.606 3.404 NO.12-24(5.486) 4.50 4.597 4.344 NO.10-32(4.826) 4.10 4.165 3.963 1/4 -20 5.10 5.257 4.979 NO.12-28(5.846) 4.60 4.724 4.496 5/16 -18 6.60 6.731 6.401 1/4-28 5.50 5.588 5.360 3/8 -16 8.00 8.153 7.798 5/16-24 6.90 7.035 6.782 7/16 -14 9.40 9.550 9.144 3/8-24 8.50 8.636 8.382 1/2 -13 10.80 11.023 10.592 7/16-20 9.90 10.033 9.729 9/16 -12 12.20 12.446 11.989 1/2-20 11.50 11.607 11.329 5/8 -11 13.60 12.868 13.386 9/16-18 12.90 13.081 12.751 3/4 -10 16.50 18.840 16.307 5/8-18 14.50 14.681 14.351 7/8 -9 19.50 19.761 19.177 3/4-16 17.50 17.678 17.323 1-8 22.20 22.606 21.971 7/8-14 20.50 20.675 20.270 1-1/8-7 25.00 25.349 24.638 1-12 23.20 23.571 23.114 1-1/4-7 28.20 28.524 27.813 1-1/8-12 26.50 26.746 26.289 1-3/8-6 30.80 31.115 30.353 1-1/4-12 29.50 29.921 29.464 1-1/2-6 34.00 34.290 33.528 1-3/8-12 32.80 33.096 32.639 1-3/4-5 39.50 39.827 38.964 1-1/2-12 36.0 36.271 35.814 2-4-1/2 45.20 45.593 44.679
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