普通螺纹 中等精度、优选系列的极限尺寸（GB/T 9145 |
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5.1 粗牙内螺纹
公差精度：中等； 旋合长度：中等； 公差带：5H —— 公称直径小于和等于1.4 mm；6H —— 公称直径大于 1.4 mm。 粗牙内螺纹中径和小径的极限尺寸值见表 1。 表 1 粗牙内螺纹中径和小径的极限尺寸（单位：毫米） 螺纹旋合长度中径 D₂小径 D₁＞≤maxminmaxminM10.61.70.8940.8380.7850.729M1.20.61.71.0941.0380.9850.929M1.40.721.2651.2051.1421.075M1.60.82.61.4581.3731.3211.221M1.80.82.61.6581.5731.5211.421M2131.8301.7401.6791.567M2.51.33.82.3032.2082.1382.013M31.54.52.7752.6752.5992.459M3.51.753.2223.1103.0102.850M4263.6633.5453.4223.242M52.57.54.6054.4804.3344.134M6395.5005.3505.1534.917M7396.5006.3506.1535.917M84127.3487.1886.9126.647M105159.2069.0268.6768.376M1261811.06310.86310.44110.106M1482412.91312.70112.21011.835M1682414.91314.70114.21013.835M18103016.60016.37615.74415.294M20103018.60018.37617.74417.294M22103020.60020.37619.74419.294M24123622.31622.05121.25220.752M27123625.31625.05124.25223.752M30154528.00727.72726.77126.211M33154531.00730.72729.77129.211M36185333.70233.40232.27031.670M39185336.70236.40235.27034.670M42216339.39239.07737.79937.129M45216342.39242.07740.79940.129M48247145.08744.75243.29742.587M52247149.08748.75241.29746.587M56288552.78352.42850.79650.046M60288556.78356.42854.79654.046M64329560.47860.10358.30557.505 5.2 粗牙外螺纹 公差精度：中等； 旋合长度：中等； 公差带：6 h —— 公称直径小于和等于 1.4 mm；6 g —— 公称直径大于 1.4 mm。粗牙外螺纹大径和中径的极限尺寸值见表 2。 表 2 粗牙外螺纹大径和中径的极限尺寸（单位：毫米） 螺纹旋合长度大径 d中径 d₂牙底圆弧半径a＞≤maxminmaxminminM10.61.71.0000.9330.8380.7850.031M1.20.61.71.2001.1331.0380.9850.031M1.40.721.4001.3251.2051.1490.038M1.60.82.61.5811.4961.3541.2910.044M1.80.82.61.7811.6961.5541.4910.044M2131.9811.8861.7211.6540.050M2.51.33.82.4802.3802.1882.1170.056M31.54.52.9802.8742.6552.5800.063M3.51.753.4793.3543.0893.0040.075M4263.9783.8383.5233.4330.088M52.57.54.9764.8264.4564.3610.100M6395.9745.7945.3245.2120.125M7396.9746.7946.3246.2120.125M84127.9727.7607.1607.0420.156M105159.9689.7328.9948.8620.188M1261811.96611.70110.82910.6790.219M1482413.96213.68212.66312.5030.250M1682415.96215.68214.66314.5030.250M18103017.95817.62316.33416.1640.313M20103019.95819.62318.33418.1640.313M22103021.95821.62320.33420.1640.313M24123623.95223.57722.00321.8030.375M27123626.95226.57725.00324.8030.375M30154529.94729.52227.67421.4620.438M33154532.94732.52230.67430.4620.438M36185335.94035.46533.34233.1180.500M39185338.94038.46536.34236.1180.500M42216341.93741.43739.01438.7780.563M45216344.93744.43742.01441.7780.563M48247147.92947.39944.68144.4310.625M52247151.92951.39948.68148.4310.625M56288555.92555.36552.35352.0880.688M60288559.92559.36556.35356.0880.688M64329563.92063.32060.02359.7430.750 a 有关规定见 GB/T 197 - 2003 的第 7 章和表 9。 5.3 细牙内螺纹 公差精度：中等； 旋合长度：中等； 公差带：6H。细牙内螺纹中径和小径的极限尺寸值见表 3。 表 3 细牙内螺纹中径和小径的极限尺寸（单位：毫米） 螺纹旋合长度中径 D₂小径 D₁＞≤maxminmaxminM8×1397.5007.3507.1536.917M10×14129.5009.3509.1538.917M10×1.254129.3489.1888.9128.647M12×1.254.51311.36811.18810.91210.647M12×1.54.51311.21611.02610.67610.376M14×1.55.61613.21613.02612.67612.376M16×1.55.61615.21615.02614.67614.376M18×1.55.61617.21617.02616.67616.376M18×25.61616.91316.70116.21015.835M20×1.55.61619.21619.02618.67618.376M20×25.61618.91318.70118.21017.835M22×1.55.61621.21621.02620.67620.376M22×25.61620.91320.70120.21019.835M24×28.52522.92522.70122.21021.835M27×28.52525.92525.70125.21024.835M30×28.52528.92528.70128.21027.835M33×28.52531.92531.70131.21030.835M36×3123634.31634.05133.25232.752M39×3123637.31637.05136.25235.752M42×3123640.31640.05139.25238.752M45×3123643.31643. 05142.25241.752M48×3154546.33146.05145.25244.752M52×4195649.71749.40248.27047.670M56×4195653.71753.40252.27051.670M60×4195657.71757.40256.27055.670M64×4195661.71761.40260.27059.670 5.4 细牙外螺纹 公差精度：中等； 旋合长度：中等； 公差带：6 g。细牙外螺纹大径和中径的极限尺寸值见表 4。 表 4 细牙外螺纹大径和中径的极限尺寸（单位：毫米） 螺纹旋合长度大径 d中径 d₂牙底圆弧半径a＞≤maxminmaxminminM8×1397.9747.7947.3247.2120.125M10×14129.9749.7949.3249.2120.125M10×1.254129.9729.7609.1609.0420.156M12×1.254.51311.97211.76011.16011.0280.156M12×1.54.51311.96811.73210.99410.8540.188M14×1.55.61613.96813.73212.99412.8540.188M16×1.55.61615.96815.73214.99414.8540.188M18×1.55.61617.96817.73216.99416.8540.188M18×25.61617.96217.68216.66316.5030.250M20×1.55.61619.96819.73218.99418.8540.188M20×25.61619.96219.68218.66318.5030.250M22×1.55.61621.96821.73220.99420.8540.188M22×25.61621.96221.68220.66320.5030.250M24×28.52523.96223.68222.66322.4930.250M27×28.52526.96226.68225.66325.4930.250M30×28.52529.96229.68228.66328.4930.250M33×28.52532.96232.68231.66331.4930.250M36×3123635.95235.57734.00333.8030.375M39×3123638.95238.57737.00336.8030.375M42×3123641.95241.57740.00339.8030.375M45×3123644.95244.57743.00342.8030.375M48×3154547.95247.57746.00345.7910.375M52×4195651.94051.46549.34249.1060.500M56×4195655.94055.46553.34253.1060.500M60×4195659.94059.46557.34257.1060.500M64×4195663.94063.46561.34261.1060.500 a 有关规定见 GB/T 197 - 2003 的第 7 章和表 9。 |
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