GBT9146-1988-商品紧固件的粗糙级精度普通螺纹极限尺寸.pdf

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1、中华人民共和国国家标准UDC621.882.082商品紧固件的粗糙级精度GB9149一88普通螺纹极限尺寸GeneralpurposescrewthreadsLimitsofsizesforcommercialboltandnutthreads-Coarsequality1主颐内容与适用范围本标准规定公称直径5至39mm商品紧固件的粗糙级精度、中等旋合长度粗牙普通螺纹极限尺寸。本标准适用于查取商品紧固件的粗糙级精度、中等旋合长度粗牙普通螺纹极限尺寸。2弓1用标准GB196普通螺纹基本尺寸vH197普通螺纹公差与配合3螺纹公差带商品紧固件的粗糙级精度

2、、中等旋合长度粗牙螺纹公差带为内螺纹:7H外螺纹:894涂镀螺纹对需要涂镀薄保护层的螺纹，如无特殊说明，本标准的极限尺寸用于镀前，镀后螺纹实际轮廓上的任何点均不应超越公差带按H,h位置所确定的最大实体牙型本标准规定的极限尺寸对镀前采用其他公差带的螺纹不适用。5极限尺寸内、外螺纹的极限尺寸见表1及表2,国家标准局1988-04一25批准1989-02一01实施GB9146一88表粗糙精度7H的粗牙内螺纹极限尺寸n飞m旋合长度一门一}:;3}巾径小径螺纹规格>蕊最小最大最480小最大最小M52.5了.55.0004.6405304.3844.1349M

3、636.0005.54063505.2174.917匀M737.0006.5406.2175.917-悦M848.0007.3887.1886.9826.64715M10510.00092509.0268.7518.3了618M12612.00011.11310.86310.53110.106一24M14800012.96612.70112.31011.83524M16800014.96614.70114.31013.835103018M1日00016.65616.37615.R5415.294一一10洲加18M2000065618.37617.8

4、5417.2941030呱M2200065620.31619.85419.2941236器M24::‘00038622.05121.38220.752---论36器M2700038605124.38275215朽:;.28::.M3000008272726.921::21115朽胳31洲朋M3300008272729.921211一一一一18的36洲31m3600018邪洲m3，39000::.:::36:::::.::::::表2粗糙精度8g的粗牙外螺纹极限尺寸mm旋合长度大径中径牙底最小螺纹规格>(最大最小最大最小圆弧半径m52.57.54.9

5、764.7404.4564.3060.100m6395.9745.6945.3245.1440-125M739‘.974{6.6946.3246.1440.125M84127.9727.6377.1606.9700.156M1.05159.9689.5938.9948.7820.188m1261811.96611.54110.82910.5930.219M1482413.96213.51212.66312.4130.250M1682415.96215.51214.66314.4130.250M18103017.95817.42816.33416.0

6、690.313M20103019.95819.42818.33418.0690.313M22103021.95821.42820.33420.0690.313M24123623.95223.35222.00321.6880.375M27123626.95226.35225.00324.6880.375M30154529.94729.27727.67427.3390.438M33]51532.94732.27730.67430.3390.438M36M59::::::.:::385.t.190::’::::::::::::GB9146一88附录A紧固

7、件普通暇纹(公称直径42至68mm)的极限尺寸(参考件)Al本附录规定公称直径42至68mm紧固件的粗糙级精度、中等旋合长度粗牙螺纹极限尺寸。内、外螺纹的极限尺寸见表Al及表AZ。表Al粗糙精度7H的粗牙内螺纹极限尺寸mm旋合长度大径中径小径螺纹规格>簇最小最大最小最大最小M422l6342.000394773907737.9793了129M452l6345.00042，47742.0?740.97940.129M48247148，0004517744‘7524348742.587M52247l52.00049，17748.752确7‘48了46.

8、587M5628855600052.878524285099650，046M60288560.00056.87856.42