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1、常用钻具转换接头螺纹参数（SY5200、SY5369）序号代号螺纹类型螺纹规范接头毛坯公螺纹母螺纹刀片型号牙/寸锥度外径D内径d大径DS小径DF螺纹长L镗孔QF螺纹长L1NC2341:6793265.152.476.266.79222A10NC26(23/8F)41:6(86)88.9(44.5)387360.3576.274.6923210NC31(27/8IF)41:61055186.1371.3288.987.7104.84NC3541:61215194.9779.0995.296.8111.15310NC38(31/2F)41:6127(60)5710285.07101.6103.61
2、17.54Y1W34Y1N364A20NC40(4FH)41:613371108.7189.66114.3110.3130.27NC4441:615257-71117.4898.43114.3119.1130.284A10NC46(4IF)41:6(152)16057-71122.48103.73114.3124.6130.29410NC50(41/2IF)41:6(162)177.871133.35114.3114.3134.9130.210NC5641:419771149.25117.5127150.8142.911NC6141:422971163.52128.8139.7165.1155
3、.64Y2W312NC7041:424776185.75147.65152.4187.3168.34Y2N313NC7741:427976203.2161.95165.1204.8181142A3023/8REG51:4803266.6747.62576.268.392.15Y4W45Y4N41523027/8RED51:4953276.253.97588.977.8104.81633041/2RED51:41083888.965.07595.290.5111.15Y3W35Y3N31743041/2RED51:414057117.4790.475108119.1123.81853051/2R
4、ED41:417270140.21110.06120.6141.7136.54Y4W34Y4N31963065/8RED41:619771152.2131.94Y5W34Y5N32073075/8RED41:424176177.8144.48133.4180.2149.24Y4W32183085/8RED41:4201.98167.84136.52204.4152.44Y4N32232031/2FH51:411854101.4577.62295.2102.8111.15Y3W32342041/2FH51:414664121.7296.317101.6123.8117.55Y3N32452051/2FH41:6177.876147.96126.79127150142.92562065/8FH41:620371171.5150.36127173.8142.94Y5W34Y5N32651/2IF41:6162.48141.32127163.9142.9
