副本美制粗螺
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- 美制螺紋規(guī)格 (UNF) 標(biāo)準(zhǔn)徑 2級(jí)牙鉆孔徑
最大 最小
NO.0-80(1.524) 1.25 1.305 1.182
NO.1-72(1.854) 1.55 1.612 1.474
NO.2-64(2.184) 1.85 1.912 1.756
NO.3-56(2.515) 2.10 2.197 2.025
NO.4-48(2.845) 2.40 2.458 2.271
NO.5-44(3.175) 2.70 2.740 2.551
NO.6-40(3.505) 2.90 3.022 2.820
NO.8-36(4.166) 3.50 3.606 3.404
NO.10-32(4.826) 4.10 4.165 3.963
NO.12-28(5.846) 4.60 4.724 4.496
1/4-28 5.50 5.588 5.360
5/16-24 6.90 7.035 6.782
3/8-24 8.50 8.636 8.382
7/16-20 9.90 10.033 9.729
1/2-20 11.50 11.607 11.329
9/16-18 12.90 13.081 12.751
5/8-18 14.50 14.681 14.351
3/4-16 17.50 17.678 17.323
7/8-14 20.50 20.675 20.270
1-12 23.20 23.571 23.114
1-1/8-12 26.50 26.746 26.289
1-1/4-12 29.50 29.921 29.464
1-3/8-12 32.80 33.096 32.639
1-1/2-12 36.0 36.271 35.814
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