JIS螺丝头部标准.doc

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1、螺丝头部标准■盘头螺钉（代码：P）JISB1111Panheadscrewsunit：mm螺纹公称直径d螺距P十字槽槽号dkKrf1rf2mq（1）rdaE（2）F（2）G基本尺寸偏差基本尺寸偏差约约参考maxminminmaxmaxmaxmaxM20.413.5-0.41.3±0.14.50.62.21.010.60.12.60.150.12°(M2.2)0.4541.550.72.41.210.80.12.80.20.15M2.50.454.51.760.82.61.4210.13.10.20.15M30.525.5-0.52±0.15713.61.430.860.13.60.25

2、0.2(M3.5)0.662.381.13.91.731.150.14.10.250.2M40.772.691.34.22.031.450.24.70.30.2(M4.5)0.758-0.62.9111.54.62.431.840.25.20.350.25M50.893.3121.64.92.732.140.25.70.350.25M61310.5-0.73.9±0.2141.96.32.862.260.256.80.40.3M81.2514-0.85.2182.67.84.363.730.49.20.50.4备注：1、（1）q表示十字槽量规插入深度；2、（2）E和F为相对轴心的偏移；

3、3、括号内公称直径尽量不选用。ZHONGSHANOUTSCAPINDUSTRIAL&TRADINGCO.,LTD■沉头螺钉（代码：K）JISB1111Countersunkheadscrewsunit：螺纹公称直径d螺距P十字槽槽号dkKcmq（1）rE（2）F（2）G基本尺寸偏差基本尺寸偏差约约maxmin约maxmaxmaxM20.414-0.41.20-0.20.22.21.010.650.20.150.12°(M2.2)0.454.41.30.22.41.210.850.220.20.15M2.50.4551.450.22.61.421.050.250.20.15M30.526

4、-0.51.750-0.30.253.61.430.910.30.250.2(M3.5)0.6720.254.11.931.40.350.250.2M40.782.30.34.52.831.790.40.30.2(M4.5)0.759-0.62.550.34.92.732.190.450.350.25M50.8102.80.35.12.932.380.50.350.25M61312-0.73.40-0.40.46.73.262.70.60.40.3M81.2516-0.84.40.48.44.964.360.80.50.4备注：1、（1）q表示十字槽量规插入深度；2、（2）E和F为相对

5、轴心的偏移；3、括号内公称直径尽量不选用。ZHONGSHANOUTSCAPINDUSTRIAL&TRADINGCO.,LTD半沉头螺钉（代码：O）JISB1111raisedcskheadwoodscrewsunit：mm螺纹公称直径d螺距P十字槽槽号dkKcfk+fmq（1）rE（2）F（2）G基本尺寸偏差基本尺寸偏差约约基本尺寸偏差参考基本尺寸偏差约maxmaxmaxM20.4140-0.41.20-0.20.20.41.60-0.42.41.210.850.20.150.12°(M2.2)0.454.41.30.20.51.82.71.521.140.220.20.15M2.50

6、.4551.450.20.5522.91.721.340.250.20.15M30.526-0.51.750-0.30.250.72.450-0.53.81.631.110.30.250.2(M3.5)0.6720.250.82.84.32.131.60.350.250.2M40.782.30.30.93.24.72.531.990.40.30.2(M4.5)0.759-0.62.550.313.555.12.932.380.450.350.25M50.8102.80.31.245.33.132.580.50.350.25M61312-0.73.40-0.40.41.44.80-0.6

7、6.93.462.90.60.40.3M81.2516-0.84.40.41.86.28.65.164.560.80.50.4备注：1、（1）q表示十字槽量规插入深度；2、（2）E和F为相对轴心的偏移；3、括号内公称直径尽量不选用。ZHONGSHANOUTSCAPINDUSTRIAL&TRADINGCO.,LTD扁圆头螺钉（代码：T）JISB1111Ovalheadscrewunit：mm螺纹公称直径d螺距P十字槽槽号dkKrfmq（1）rda