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1、.常用钻具转换接头螺纹参数（SY5200、SY5369）螺纹规范接头毛坯公螺纹母螺纹序刀片代号螺纹类型号大径小径螺纹长镗孔螺纹型号牙 /寸锥度外径 D内径 dDSDFLQF长 L1NC2341： 6793265.152.476.266.79222A10NC26 （23/8 F）41： 6（ 86）（ 44.5）387360.3576.274.69288.93210NC31 （ 27/8 IF）41： 61055186.1371.3288.987.7104.84NC3541： 61215194.9779.0995.296.8111.15310NC38 （31/2 F）41： 6127（ 60）5
2、710285.07101.6103.6117.54Y1W34Y1N364A20NC40 （ 4 FH ）41： 613371108.7189.66114.3110.3130.27NC4441： 615257-71117.4898.43114.3119.1130.284A10NC46 （ 4 IF）41： 6（ 152）57-71122.48103.73114.3124.6130.21609410NC50 （ 41/2 IF）41： 6（ 162）71133.35114.3114.3134.9130.2177.810NC5641： 419771149.25117.5127150.8142.911
3、NC6141： 422971163.52128.8139.7165.1155.64Y2W312NC7041： 424776185.75147.65152.4187.3168.34Y2N313NC7741： 427976203.2161.95165.1204.8181142A3023/8 REG51:4803266.6747.62576.268.392.15Y4W45Y4N41523027/8 RED51:4953276.253.97588.977.8104.81633041/2 RED51:41083888.965.07595.290.5111.15Y3W35Y3N31743041/2 RED
4、51:414057117.4790.475108119.1123.81853051/2 RED41:417270140.21110.06120.6141.7136.54Y4W34Y4N31963065/8 RED41:619771152.2131.04127154142.94Y5W34Y5N32073075/8 RED41:424176177.8144.48133.4180.2149.24Y4W32183085/8 RED41:4201.98167.84136.52204.4152.44Y4N32232031/2 FH51:411854101.4577.62295.2102.8111.15Y3W32342041/2 FH51:414664121.7296.317101.6123.8117.55Y3N32452051/2 FH41:6177.876147.96126.79127150142.92562065/8 FH41:620371171.5150.36127173.8142.94Y5W34Y5N32651/2 IF41:6162.48141.32127163.9142.9;.