螺栓和螺钉用通孔尺寸表.docx

螺栓和螺钉用通孔尺寸表螺纹规格d通孔dQ系列精1中等粗装配;装配装配;ML61JL82ML822J2.2M22.22.42.6M2.fi2J匕口3JM33.2343.6M3.53J3.94.2M44.34.54.8M4.54.655.3M5535.55.8M6&46.67M77.47,68MQ8.4910MIO10.51112M121313.514.5MU1515,516.5MI61717.513.3M18192021M20212224螺纹规格d通孔do系列精装配中等装配租装配M22232426M24252626[M27283032M30313335M33343638M36373942M39404245M4243r4546M45464852M48505256M5254r56162M56566266M60626670M64667074M68707478M72747882攻螺纹前底孔直径的确定攻米制螺纹P<1mmido=d—PP>lmm：do=d—（l“04〜P式中：PF距（mm］；ch—^占头直径（mm）;已一蠟纹公称直径〔mnn〕攻不通孔螺纹站孔深度=所需螺孔深度十另外，也可查表求得:媳纹公称直径d曝距P钻头直径do铸铁、青铜、黄桐钢s可锻铸铁、紫铜20.41,61.60.251.75LZ50.452.052.050.352」占2.1530*62.52.50.352,652,65A0.73.33*340.53.53.554J4.20.54,54.5614550,755.26.2L256.66J816.970.757.17.21.58,48,5101.258.68.718590.75虫19,2L7510Jg12L510.4g\25】0启10.7110.9111螺纹公称直径d螺距P钻头直径do铸铁.青铜、黄铜钢、可锻祷铁、紫铜142L5111.812.412.91212.6131621.5113.B14,414.91414.515182,52L5115.315.016.416.?15.51616.517202.52L5117.317.81B.418.917J51818.619222.52L5119.319.620.420.919.52020.5212432L5120.72L622.422.9212222.523(2)非螺纹密封的管螺纹攻螺纹前钻底孔的钻头直径螺纹公称直径(”)1/81/43/81/23/4111/4.31/811/2每25.4mm内牙数281919141411111111钻头直径(mm8.811.715.218.924.430.639.241.345.1英制锥管螺纹英制锥螺纹公称直径(")每25.4mn钻头直径公称直径(")每25.4mn钻头直径内牙数(mm内牙数(mm1/8288.41/8278.61/41911.21/41811.13/81914.73/81814.51/21418.31/21417.93/41423.63/41423.211129.71111/229.211/41138.311/4111/237.911/21144.111/2111/243.921155.82111/256。