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美国UNF和unc螺纹准则

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美国UNF和unc螺纹准则ThelatestrevisiononNovember22,2020美国UNF和unc螺纹准则美制外螺纹(2A)常用规格极限尺寸表(粗牙)公称尺寸和每英寸牙数螺纹系列代号大径极限中径极限小径max螺胚直径最小最大最小最大最小最大8-32UNC0.15710.16310.13990.14280.12483.583.61(0.164-32)3.99034.14273.55353.62713.169910-240.18180.1890...

美国UNF和unc螺纹准则
ThelatestrevisiononNovember22,2020美国UNF和unc螺纹准则美制外螺纹(2A)常用规格极限尺寸 关于同志近三年现实表现材料材料类招标技术评分表图表与交易pdf视力表打印pdf用图表说话 pdf (粗牙)公称尺寸和每英寸牙数螺纹系列代号大径极限中径极限小径max螺胚直径最小最大最小最大最小最大8-32UNC0.15710.16310.13990.14280.12483.583.61(0.164-32)3.99034.14273.55353.62713.169910-240.18180.18900.15860.16190.13794.074.10(0.190-24)4.61774.80064.02844.11233.502712-240.20780.21500.18450.18790.16394.724.75(0.216-24)5.27815.46104.68634.77274.16311/4-200.24080.24890.21270.21640.18765.455.48(0.250-20)6.11636.32215.40265.49664.76505/16-180.30260.31130.27120.27520.24316.946.98(0.3175-18)7.68607.90706.88856.99016.17473/8-160.36430.37370.32870.33310.29708.408.44(0.375-16)9.25329.49208.34908.46077.54387/16-140.42580.43610.38500.38970.34859.839.87(0.4375-14)10.815311.07699.77909.89848.85191/2-130.48760.49850.44350.44850.404111.3411.38(0.50-13)12.385012.661911.264911.391910.26419/16-120.54950.56090.50160.50680.458712.8012.84(0.5625-12)13.957314.246912.740612.872711.65105/8-110.61130.62340.55890.56440.511914.2714.32(0.625-11)15.527015.834414.196114.335813.00233/4-100.73530.74820.67730.68320.625517.2817.33(0.750-10)18.676619.004317.203417.353315.88777/8-90.85920.87310.79460.80090.736820.2720.32(0.875-9)21.823722.176720.182820.342918.71471"-80.98300.99800.91000.91680.844623.2223.27(1.000-8)24.968225.349223.114023.286721.45281.螺胚直径指滚丝前的尺寸,数值为依经验公式计算而得,在实践中需验证。2.标记示例:10-24UNC-2A(或0.190-24UNC-2A)、3/8-16UNC-2A(或0.375-16UNC-2A)(注:表中上行斜体数值单位为英寸,下行为毫米)美制外螺纹(2A)常用规格极限尺寸表(细牙)公称尺寸和每英寸牙数螺纹系列代号大径极限中径极限小径max螺胚直径最小最大最小最大最小最大8-36UNF0.15770.16320.14240.14520.12913.653.67(0.164-36)4.00564.14533.61703.68813.279110-320.18310.18910.16580.16880.15084.244.27(0.190-32)4.65074.80314.21134.28753.830312-280.20850.21500.18860.19180.17124.824.85(0.216-28)5.29595.46104.79044.87174.34851/4-280.24250.24900.22250.22580.20525.695.71(0.250-28)6.15956.32465.65155.73535.21215/16-240.30420.31140.28060.28430.26037.177.20(0.3175-24)7.72677.90967.12727.22126.61163/8-240.36670.37390.34300.34680.32288.758.78(0.375-24)9.31429.49718.71228.80878.19917/16-200.42810.43620.39950.40370.374910.1910.23(0.4375-20)10.873711.079510.147310.25409.52251/2-200.49060.49870.46190.46620.437411.7811.82(0.50-20)12.461212.667011.732311.841511.11009/16-180.55240.56110.52050.52500.492913.2713.31(0.5625-18)14.031014.251913.220713.335012.51975/8-180.61490.62360.58280.58750.555414.8514.89(0.625-18)15.618515.839414.803114.922514.10723/4-160.73910.74850.70290.70790.671817.9117.95(0.750-16)18.773119.011917.853717.980717.06377/8-140.86310.87340.82160.82700.785820.9320.97(0.875-14)21.922722.184420.868621.005819.95931"-120.98680.99820.93820.94410.896023.9023.95(1.000-12)25.064725.354323.830323.980122.75841.螺胚直径指滚丝前的尺寸,数值为依经验公式计算而得,在实践中需验证。2.标记示例:10-32UNF-2A(或0.190-32UNF-2A)、3/8-24UNF-2A(或0.375-24UNF-2A)美制内螺纹(2B)常用规格极限尺寸表(粗牙)公称尺寸和每英寸牙数螺纹系列代号小径极限中径极限大径min底孔直径最小最大最小最大最小最大8-32UNC0.13000.13900.14370.14750.16403.403.50(0.164-32)3.30203.53063.65003.74654.165610-240.14500.15600.16290.16720.19003.753.90(0.190-24)3.68303.96244.13774.24694.826012-240.17100.18100.18890.19330.21604.404.55(0.216-24)4.34344.59744.79814.90985.48641/4-200.19600.20700.21750.22240.25005.055.20(0.250-20)4.97845.25785.52455.64906.35005/16-180.25200.26500.27640.28170.31256.456.60(0.3175-18)6.40086.73107.02067.15527.93753/8-160.30700.32100.33440.34010.37507.858.00(0.375-16)7.79788.15348.49388.63859.52507/16-140.36000.37600.39110.39720.43759.209.40(0.4375-14)9.14409.55049.933910.088911.11251/2-130.41700.43400.45000.45650.500010.6510.90(0.50-13)10.591811.023611.430011.595112.70009/16-120.47200.49000.50840.51520.562512.0512.30(0.5625-12)11.988812.446012.913413.086114.28755/8-110.52700.54600.56600.57320.625013.4513.70(0.625-11)13.385813.868414.376414.559315.87503/4-100.64200.66300.68500.69270.750016.4016.70(0.750-10)16.306816.840217.399017.594619.05007/8-90.75500.77800.80280.81100.875019.3019.60(0.875-9)19.177019.761220.391120.599422.22501"-80.86500.89000.91880.92761.000022.1022.40(1.000-8)21.971022.606023.337523.561025.40001.底孔直径指攻丝前钻孔直径,铸铁、黄铜等较软料取小值,钢、青铜等较硬料取大值。2.标记示例:10-24UNC-2B(或0.190-24UNC-2B)、3/8-16UNC-2B(或0.375-16UNC-2B)美制内螺纹(2B)常用规格极限尺寸表(细牙)公称尺寸和每英寸牙数螺纹系列代号小径极限中径极限大径min底孔直径最小最大最小最大最小最大8-36UNF0.13400.14200.14600.14960.16403.453.67(0.164-36)3.40363.60683.70843.79984.165610-320.15600.16400.16970.17360.19004.004.27(0.190-32)3.96244.16564.31044.40944.826012-280.17700.18600.19280.19700.21604.554.85(0.216-28)4.49584.72444.89715.00385.48641/4-280.21100.22000.22680.23110.25005.405.71(0.250-28)5.35945.58805.76075.86996.35005/16-240.26700.27700.28540.29020.31256.857.20(0.3175-24)6.78187.03587.24927.37117.93753/8-240.33000.34000.34790.35280.37508.458.78(0.375-24)8.38208.63608.83678.96119.52507/16-200.38300.39500.40500.41040.43759.8510.23(0.4375-20)9.728210.033010.287010.424211.11251/2-200.44600.45700.46750.47310.500011.4011.82(0.50-20)11.328411.607811.874512.016712.70009/16-180.50200.51500.52640.53230.562512.8513.31(0.5625-18)12.750813.081013.370613.520414.28755/8-180.56500.57800.58890.59490.625014.4514.89(0.625-18)14.351014.681214.958115.110515.87503/4-160.68200.69600.70940.71590.750017.4017.95(0.750-16)17.322817.678418.018818.183919.05007/8-140.79800.81400.82860.83560.875020.3520.97(0.875-14)20.269220.675621.046421.224222.22501"-120.91000.92800.94590.95351.000023.9023.95(1.000-12)23.114023.571224.025924.218925.40001.底孔直径指攻丝前钻孔直径,铸铁、黄铜等较软料取小值,钢、青铜等较硬料取大值。2.标记示例:10-32UNF-2B(或0.190-32UNF-2B)、3/8-24UNF-2B(或0.375-24UNF-2B)
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