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统一螺纹搓制和滚制前的毛坯直径
GBT
34632-2017
统一
螺纹
滚制前
毛坯
直径
34632
2017
GB/T34632-2017表1(续)单位为毫米毛坏直径d,公称直径牙数3A2A和螺纹系列代号maxminmaxmin-18 UNC7.0266.9956.9916.943-24 UNF7.2397.2147.2077.165-32 UNEF7.4067.3817.3777.339-16 UNC8.4928.4638.4568.406-24 UNF8.8208.7948.7898.747-32 UNEF8.9908.9678.9618.923-14 UNC9.9369.9049.8979.842-16 UN10.07510.04110.0369.981-20 UNF10.27610.24510.23910.188-28 UNEF10.50110.47810.47010.431-13UNC11.43611.39711.39411.330-16UN11.65911.62511.62011.563-20 UNF11.86111.82711.82511.770-28UNEF12.08812.06212.05612.015-12 UNC12.90112.87912.85612.810%-16UN13.23913.21013.19913.148%-18 UNF13.35413.32113.31513.262%-24 UNEF13.57413.54913.54013.497-11 UNC14.36614.34214.31914.2675%-12UN14.49414.45814.45014.388%-16UN14.82414.79314.78514.731%-18 UNF14.94014.90514.90114.842-24 UNEF15.16115.13615.12615.084-10 UNC17.38917.35917.33917.279%-12UN17.66417.62717.61717.553-16 UNF17.99617.96017.95417.895-20 UNEF18.20218.17018.16518.113-9 UNC20.37920.34820.32720.263%-12UN20.82820.79620.78120.721-14 UNF21.02020.98420.97620.914%-16UN21.16421.13521.12221.070-20UNEF21.37221.34121.33521.284