英制美制螺纹规格.xls

文档介绍：统一螺纹(UN) 系列螺纹丝套规格、型式尺寸及安装参数表(3- 1) ( No2 - 56UNC ~ 7/16 - 32UN ) 规格公称直径(mm) 螺距(mm) 公称长度钻孔深度攻丝深度钻孔直径(mm) L1(mm) L2(mm) 切削丝锥 dp xd L(mm) min min min max No2 - 56UNC - 56 1d 2d 3d 4d No2 - 64UNF - 64 1d 2d 3d 4d No3 - 48UNC - 48 1d 2d 3d 4d No3 - 56UNF - 56 1d 2d 3d 4d No4 - 40UNC - 40 1d 2d 3d 4d No4 - 48UNF - 48 1d 2d 3d 4d No5 - 40UNC - 40 1d 4.