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1、.常用钻具转换接头螺纹参数（常用钻具转换接头螺纹参数（SY5200SY5200、SY5369SY5369）序代号号1234567891011121314151617181920212223242526螺纹规范螺纹类型牙/寸NC23NC26（23/8F）NC31（27/8IF）NC35NC38（31/2F）NC40（4FH）NC44NC46（4IF）NC50（41/2IF）NC56NC61NC70NC7723/8REG27/8RED41/2RED41/2RED51/2RED65/8RED75/8RED85/8RED31/2FH41/2FH51/2FH65/8FH51/2IF44444444444
2、445555444455444接头毛坯外径 D79（86）88.9105121127133152（152）160（162）177.81972292472798095108140172197241118146177.8203公螺纹大径DS65.17386.1394.97102108.71117.48122.48133.35149.25163.52185.75203.266.6776.288.9117.47140.21152.2177.8201.98101.45121.72147.96171.5162.48母螺纹锥度1：61：61：61：61：61：61：61：61：61：41：41：41：41:
3、41:41:41:41:41:61:41:41:41:41:61:61:6内径 d32（44.5）385151（60）577157-7157-7171717176763232385770717654647671小径DF52.460.3571.3279.0985.0789.6698.43103.73114.3117.5128.8147.65161.9547.62553.97565.07590.475110.06131.144.48167.8477.62296.317126.79150.36141.32螺纹长L76.276.288.995.2101.6114.3114.3114.3114.3127
4、139.7152.4165.176.288.995.2108120.6133.4136.5295.2101.6127127127镗孔QF66.774.687.796.8103.6110.3119.1124.6134.9150.8165.1187.3204.868.377.890.5119.1141.7180.2204.4102.8123.8150173.8163.9螺纹长 L9292104.8111.1117.5130.2130.2130.2130.2142.9155.6168.318192.1104.8111.1123.8136.5.9149.2152.4111.1117.5142.9142.9142.9刀片型号2A102103104A204A104102A302303304305306307308303204205206204Y1W34Y1N34Y2W34Y2N35Y4W45Y4N45Y3W35Y3N34Y4W34Y4N34Y5W34Y5N34Y4W34Y4N35Y3W35Y3N34Y5W34Y5N3.