美制螺纹大全Word格式.docx

1、9.49208.34908.4607刀 16-140,42580.43610.38500.38970.3485（0.4375-14）UNC10.815311.07699.77909.89848,8519 9.839.871/2-130.48760.49850.44350.44850,4041（0.50-13）12.385012,661911,264911.391910.2641 11.3411.389/16-120.54950.56090.50160.50680.4587（0.5625-12）13.957314.246912.740612.872711.6510 12.8012,845/8-1

2、10.61130.62340.55890.56440.5119（0.625-11）15.527015,834414,196114.335813.0023 14.2714.323/4-100.73530.74820.67730.68320,6255（0.750-10）18.676619.004317,203417.353315.8877 17.2817.337/8-90.85920.87310.79460.80090.7368（0.875-9）21.823722,176720.182820.342918.7147 20.2720.321-80.98300.99800.91000.91680.84

3、4623,27（1.000-8）24.968225,349223,1140P3.P867P1.45P8 23.22大径极限螺胚直径1 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：1024UNC2A （或 019024UNC2A）、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（粗牙） 中径极限美制外螺纹（2A）常用规格极限尺寸表（细牙）小径软钦噪备大娜中径极限5螺胚直径每英寸牙数列代号最小8-360.15770.16320.14240.14520.12913.65

4、3,67（0.164-36）4.00564.14533,61703.68813.279110-320.18310,18910.16580.16880.1508（0.190-32）4.65074,80314,21134.28753.83034.244,2712-280.20850.18860.19180.1712（0.216-28）5.29594.79044.87174.34854.824,851/4-280.24250,24900.22250.22580.2052（0.250-28）6.15956,32465,65155.73535.21215.695.715/16-240.30420,311

5、40,28060.28430.2603（0.3175-24）7.72677.90967.12727.22126.61167.177,203/8-240.36670.37390.34300.34680.3228（0.375-24）9.31429.49718.71228.80878.19918,758.787/16-20UNF0,43620.39950.40370.3749（0.4375-20）10.873711.079510.147310.25409.522510.1910.231 /2-200.49060,49870.46190.46620.437411.7811.82（0.50-20）12.

6、461212.667011,732311.841511.11009/16-180.55240.56110.52050.52500.4929（0.5625-18）14.031014.251913.220713.335012,519713.2713.315/8-180.61490.62360,58280.58750.5554（0.625-18）15.618515,839414,803114.922514.107214.8514.893/4-160.73910.74850.70290.70790.6718（0.750-16）18.773119.011917.853717.980717.063717.

7、9117.957/8-140.86310,87340.82160.82700.7858（0.875-14）21,922722.184420.868621.005819,959320.9320.97-120.98680.99820.93820.94410.8960（1.000-12）25.064725,354323.830323.980122.758423.9023.952.标记示例：1032UNF2A（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）公称尺寸和螺纹系小径极限中径极限底孔直径每英寸牙数曰I

8、 取A最大大径min曰 取A8-320.13000.13900.14370.14750.16403.30203.53063.65003.74654.16563.403.500.14500.15600.16290.16720.19003.753.903.68303.96244.13774.24694.82600.17100.18100,18890.19330,21604.34344.59744.79814.90985,4864 4.404,551/4-200,19600.20700.21750,22240,25004.97845.25785.52455,64906,3500 5.055,200,

9、25200.26500.27640,28170,31256.40086.73107.02067.15527.9375 6.456.600,30700.32100.33440,34010,37507.79788.15348.49388.63859,5250 7.858,007/16-140.36000.37600.39110,39720,43759,14409.55049.933910.088911.11259.209,400.41700.43400,45000.45650,500010.591811.023611,430011.595112.700010.6510.900,47200.4900

10、0.50840,51520,562511,988812,446012,913413.086114.287512.0512,300.52700.54600.56600,57320.6250（0,625-11）13.385813.868414,376414.559315.875013.4513,700.64200.66300.68500.69270.750016,306816,840217,399017.594619.050016.4016.700,75500.77800.80280.81100.875019.177019.761220,391120.599422.225019.3019.600.

11、86500.89000.91880.92761,000021.971022.606023,337523.561025.400022.1022,401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。1024UNC2B（或 0.190-24UNC-2B）、3/8-16UNC-2B（或 037516UNC2B）美制内螺纹（2B）常用规格极限尺寸表（细牙）rsT取A曰亠 取穴最0.13400.14200.14600.14963.40363,60683.70843.79983.450.16970.17364,31044.40944.000.17700,18600.19280,

12、19700.21604.49584.72444,89715.00385.48644.551 /4-280.21100.22000,22680.23110.2500 U “6.3500 （0,250-28）5.35945.58805.76075.86990.26700.27700,28540.2902（0,3175-24）6.78187.03587,24927,37117.9375 6.857.200.33000.34000.34790.35280.3750（0,375-24）8.38208.63608,83678.96119.5250 8.450.38300.39500.40500.41040

13、.43759.728210.033010.287010.424211,11259.851/2-200.44600.45700,46750,473111.328411.607811.874512.016712.700011.400.50200.51500.52640.53230.5625（0,5625-18）12.750813.081013.370613.520414.287512.850.56500.57800,58890.59490,6250（0,625-18）14.351014.681214.958115.110515,8750 14,450.68200.69600.70940.71591

14、7.322817.678418.018818.183919.0500 17,400.79800.81400.82860.835620.269220.675621.046421.224222.225020.350.92800.94590.95351.0000（1,000-12）23.114023.571224.025924.218925.400023.901032UNF2B（或 0.190-32UNF-2B）、3/8-24UNF-2B（或 0.375-24UNF-2B）美制螺纹标准大全外螺纹External内螺纹InternalNominalSine,Thr eads perInch,andSe

15、ries Desig nat ion级 别CI as公差Allo wan ce大径 Major Diameter中径Pitch DiameterUNR Minor Diam?Max（ Re fj小径Minor DiameterMaxMinMindMaxh0-80 UNF2A0.00050.05950.0563140.04960.04462 B0.046530.0668190,0500.04513 B1-64 UNC060.072486230.0600.05380,05610,060.07392290.0610.05441-7289340.0559B8350.062950.05652-560.0

16、850.080.070.071133870.064267370.086440.06482-6416530.0668910.07422590.06743-480.0980.090.08207480.073464450.0830,070.099550.07413-560.084420.07719749740.07784-400.1110.100.092080.0814390.0930.112695890.08224-480.0950,08780.0864940.09675850.08715-400.1240.110.1050,090.094479620.1060.12599880.09525-440.1070.0972040.120.1080,10020.09796-320.1370.130.1141210.10.1150.138770.10086-400.118210.10740.119