美制螺纹标准

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1、o美制螺纹标准o发布人：nohtm发布时间：2009.5.6阅读次数：1387o 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)1.551.5821.425NO.0-80(1.524)1.251.3051.182NO.2-56(2.184)1.801.8711.695NO.1-72(1.854)1.551.6121.474NO.3-48(2.515)2.102.1461.941NO.2-64(2.184)1.851.9121.756NO.4-40(2.845)2

2、.302.3852.157NO.3-56(2.515)2.102.1972.025NO.5-40(3.175)2.602.6972.487NO.4-48(2.845)2.402.4582.271NO.6-32(3.505)2.802.8952.642NO.5-44(3.175)2.702.7402.551NO.8-32(4.166)3.403.5303.302NO.6-40(3.505)2.903.0222.820NO.10-24(4.826)3.903.9623.683NO.8-36(4.166)3.503.6063.404NO.12-24

3、(5.486)4.504.5974.344NO.10-32(4.826)4.104.1653.9631/4-205.105.2574.979NO.12-28(5.846)4.604.7244.4965/16-186.606.7316.4011/4-285.505.5885.3603/8-168.008.1537.7985/16-246.907.0356.7827/16-149.409.5509.1443/8-248.508.6368.3821/2-1310.8011.02310.5927/16-209.9010.0339.7299/16-12

4、12.2012.44611.9891/2-2011.5011.60711.3295/8-1113.6012.86813.3869/16-1812.9013.08112.7513/4-1016.5018.84016.3075/8-1814.5014.68114.3517/8-919.5019.76119.1773/4-1617.5017.67817.3231-822.2022.60621.9717/8-1420.5020.67520.2701-1/8-725.0025.34924.6381-1223.2023.57123.1141-1/4-72

5、8.2028.52427.8131-1/8-1226.5026.74626.2891-3/8-630.8031.11530.3531-1/4-1229.5029.92129.4641-1/2-634.0034.29033.5281-3/8-1232.8033.09632.6391-3/4-539.5039.82738.9641-1/2-1236.036.27135.8142-4-1/245.2045.59344.679美制迫牙丝攻钻孔径美制特细螺纹规格精度等级规格（UNEF)标准径2级牙钻孔径G4-G6G7-G8G9最大最小NO.2-56UN

6、C1.94--NO.12-324.704.8264.623NO.3-482.23--1/4--325.605.6905.486NO.4-402.50--5/16-327.107.2647.087NO.5-402.83--3/8-328.708.8658.661NO.6-323.07--7/16-2810.2010.33810.135NO.8-323.733.77-1/2-2811.8011.93811.709NO.10-244.244.30-9/16-2413.2013.38613.132NO.12-244.904.96-5/8-2414.8

7、014.98614.7321/4-20-5.72-3/4-2017.8017.95817.6785/16-18-7.24-7/8-2021.0021.13320.8533/8-16-8.748.811-2024.0024.30824.0287/16-14-10.2010.30美制管螺纹1/2-1311.2711.82NO.2-64UNF1.97--规格钻孔径NO.3-562.27--NPTNPSNO.4-482.56--使用绞刀时不用绞刀时NO.5-442.86--1/16-276.106.256.35NO.6-403.16--1/8-278

8、.338.438.74NO.8-363.78--1/4-1810.7211.1311.13NO.10-324.394.43-3/8-1814.2714.2714.6