篇一：常用螺纹底孔尺寸表
螺纹底孔尺寸表表中底孔直径d请合理选用钻头普通粗牙螺孔公称尺寸M5*0.8M6*1M8*1.25M10*1.5底孔d4.25.06.88.5公称尺寸M8*1M10*1M12*1M14*1M16*1M18*1M20*1M22*1M24*1M27*1M30*1底孔d7.09.011.013.015.017.019.021.023.026.029.0普通细牙螺纹公称尺寸M12*1.5M14*1.5M16*1.5M18*1.5M20*1.5M22*1.5M24*1.5M27*1.5M30*1.5M33*1.5M36*1.5M42*1.5M48*1.5底孔d10.512.514.516.518.520.522.525.528.531.534.540.546.5M30*3M33*3M36*3M42*3M48*3M52*327.030.033.039.045.049.0公称尺寸M20*2M22*2M24*2M27*2M30*2M33*2M36*2M42*2M48*2M52*2底孔d18.020.022.025.028.031.034.040.046.050.0英制粗螺纹UNC牙型60°NC英制惠氏螺纹BSW牙型55°圆柱管螺孔G=RP牙型55°圆锥管螺纹ZG=RC=R=PT牙型55°布锥管螺纹Z=NPT牙型60°公称牙尺寸数8-320.164-3210-240.190-2412-240.216-241/4-200.250-201-81.000-8底孔d公称牙尺寸数3/16"-241/4"-205/16"-183/8"-167/16"-141/2"-129/16"-125/8"-113/4"-107/8"-9.01"-8.01/8"-7.011/4"-7.011/2"-6.01/8"-5.013/4"-5.017/8"-41/22"-41/251底孔d3.75.16.57.99.310.512.113.516.419.322.024.727.933.535.839.041.544.7公称牙尺寸数G1/8"-28G1/4"-19G3/8"-19G1/2"-14G3/4"-14G1"-11G11/8"-11G1/4"-11G1/2"-11G13/4"-11G2"-11G2/4"-11G21/2"-11G21/4"-11G3"-11111底孔d8.6011.7015.2018.8024.3030.5035.2039.2045.1051.0056.9062.9572.4578.8085.20公称牙尺寸数Rc1/8"-28Rc1/4"-19Rc3/8"-19Rc1/2"-14Rc3/4"-14Rc1"-11Rc11/4-11Rc1/2"-11Rc2"-11Rc21/2"-11Rc3"-111底孔d8.411.014.518.023.529.538.044.056.072.084.0公称牙尺寸数Z1/8"-27Z1/4"-18Z3/8"-18Z1/2"-14Z3/4"-14Z1"-11/2Z11/4"-111/2Z1/3"-11/2Z2"-11/21111底孔d8.411.114.618.123.629.438.244.356.33.6M12*1.7510.2M14*2M16*2M18*2.5M20*2.5M24*3M27*3M30*3.5M33*3.5M36*4M42*4.5M48*5M52*5M56*5.5M64*612.014.015.517.521.024.026.529.532.037.543.047.050.558.04.14.75.322.7英制细螺纹UNF牙型60°NF公称牙尺寸数6-400.138-408-360.164-3610-320.190-3212-280.216-281/4-280.250-281-121.000-12底孔d3.1NC美制粗螺纹60度NF美制细螺纹60度UNC英寸制统一粗螺纹60度UNF英寸制统一细螺纹60度BSW英制惠氏粗螺纹55度3.84.355.723.7
篇二：常用螺纹底孔尺寸表
英制螺纹尺寸表
英制螺纹尺寸表
英制尺寸
SM1/4″×2SM1/4″×24SM1/4″×2SM1/4″×4SM1/8″×4SM1/8″×44SM1/8″×4SM3/8″×2SM5/8″×2SM3/16″×24SM3/16″×32SM3/16″×2SM3/16″×4SM5/16″×1SM5/16″×24SM5/16″×2公称直径
Φ6.35Φ6.35Φ6.35Φ6.35Φ3.175Φ3.175Φ3.175Φ9.52Φ15.8Φ4.762Φ4.762Φ4.762Φ4.762Φ7.93Φ7.93Φ7.93底孔直径
Φ5.08Φ5.29Φ5.443Φ5.705Φ2.54Φ2.59Φ2.646Φ8.62Φ14.95Φ3.704Φ3.95Φ3.855Φ4.12Φ6.526Φ6.87Φ7.03英制尺寸
SM3/32″×56SM7/32″×22SM7/32″×32SM9/32″×2SM9/32″×2SM11/32″×2SM3/64″×32SM5/64″×64SM9/64″×4SM11/64″×32SM11/64″×4SM13/32″×32SM15/64″×2SM17/64″×32SM1/2″×2SM1/2″×14公称直径
Φ2.381Φ5.556Φ5.556Φ7.144Φ7.144Φ8.731Φ1.191Φ1.984Φ3.572Φ4.366Φ4.366Φ5.51Φ5.953Φ6.74Φ12.7Φ20.5底孔直径
Φ1.92Φ4.402Φ4.763Φ5.873Φ6.23Φ7.824Φ0.39Φ1.511Φ2.93Φ3.572Φ3.731Φ4.366Φ5.046Φ5.953Φ11.792Φ18.7英制内螺纹小径计算公式：螺纹直径×25.4-25.4/每英尺牙数
例：11/64″×40=11/64×25.4-25.4/40=4.3656-0.635≈3.73公制螺纹尺寸表
公制螺纹
M1M20.4M2.50.45M30.5M3.50.6M40.M4.50.75M50.M6Φ50.5.2MΦ6M1.3Φ6.0.757.2M11.5Φ8.5M121.75Φ10.2M14Φ11.M16Φ13.粗牙螺距
0.25钻头直径
Φ0.75Φ1.6Φ2.05Φ2.5Φ2.Φ3.3Φ3.75Φ4.2细牙螺距
钻头直径
0.20.0.31.0.42.0.53.50.54.51.250.751.58.1.251.51.251.59.210.510.1112.512.1314.51.5公、英制转换
英寸值
1/64″
1/56″
1/48″
1/44″
1/40″
1/32″
1/28″
页脚内容
英制螺纹尺寸表
公制值
英寸值
公制值
0.391/24″
1.050.4541/20″
1.20.521/18″
1.4110.571/16″
1.580.6351/8″
3.1750.7941/4″
6.350.901/2″
12.页脚内容
篇三：常用螺纹底孔尺寸表
常用螺纹底孔尺寸表-螺纹孔尺寸标准
常用螺纹底孔尺寸表包括：
1.M2.5底孔尺寸：底孔直径为2.8mm，底孔深度为5.5mm。
2.M3底孔尺寸：底孔直径为3.2mm，底孔深度为6.5mm。
3.M4底孔尺寸：底孔直径为4.2mm，底孔深度为8.5mm。
4.M5底孔尺寸：底孔直径为5.2mm，底孔深度为10.5mm。
5.M6底孔尺寸：底孔直径为6.2mm，底孔深度为12.5mm。
6.M8底孔尺寸：底孔直径为8.2mm，底孔深度为16mm。
7.M10底孔尺寸：底孔直径为10.5mm，底孔深度为20mm。
8.M12底孔尺寸：底孔直径为13mm，底孔深度为25mm。
