{"text_format":"3","workbook":"xls","n_sheets":2,"sheets":["公制螺纹","英制螺纹"],"not_rendered":{"images":2,"macros":1,"external_links":1},"read":"whole","date_system":"1900","formulas":"cached_only"}

{"sheet":"公制螺纹","index":0,"n_rows":49,"n_cols":18,"rows_kept":49,"merged":[[0,0,0,7],[1,0,1,7],[2,0,2,7],[3,0,3,7],[4,0,4,7],[5,0,5,7],[6,0,6,7],[7,0,7,7],[8,0,8,7],[9,0,9,7],[11,0,11,7]],"flags":["formulas_cached_only"]}
["公制普通螺纹名义尺寸速查"]
["      下面可以迅速查询米制普通螺纹名义的尺寸。范围按ISO 261的第一系列直径，还包括少量第二系列直径。先选择公称直径，螺距选择会变为相应的范围，而第一个螺距就是粗牙的螺距。"]
[]
["计算公式为："]
["H(原始三角形高度)=0.866 025 404P(螺距)"]
["中径(D2或d2)=D(大径，公称直径)-0.75H"]
["小径(D1或d1)=D(大径，公称直径)-1.25H"]
["数值圆整到小数点后第三位。",{"$nulls":8},1,33,21,3.5]
["您可以直接通过在下表中选择得到常用规格的尺寸。"]
[]
["公称直径(大径)：",null,"螺距：",null,"中径：",{"v":30.7266833145,"d":"30.727"},"小径：",{"v":29.2111388575,"d":"29.211"},null,null,1,"M1",0.25,0.2,{"$nulls":3},3.5]
[{"$nulls":10},1.2,"M1.2",0.25,0.2,{"$nulls":3},2]
[{"$nulls":10},1.6,"M1.6",0.35,0.2,{"$nulls":3},1.5]
[{"$nulls":10},2,"M2",0.4,0.25,{"$nulls":3}," "]
[{"$nulls":10},2.5,"M2.5",0.45,0.35,{"$nulls":3}," "]
[{"$nulls":10},3,"M3",0.5,0.35]
[{"$nulls":10},4,"M4",0.7,0.5]
[{"$nulls":10},5,"M5",0.8,0.5]
[{"$nulls":10},6,"M6",1,0.75]
[{"$nulls":10},7,"M7",1,0.75]
[{"$nulls":10},8,"M8",1.25,1,0.75]
[{"$nulls":10},10,"M10",1.5,1.25,1,0.75]
[{"$nulls":10},12,"M12",1.75,1.5,1.25,1]
[{"$nulls":10},14,"M14",2,1.5,1]
[{"$nulls":10},16,"M16",2,1.5,1]
[{"$nulls":10},18,"M18",2.5,2,1.5,1]
[{"$nulls":10},20,"M20",2.5,2,1.5,1]
[{"$nulls":10},24,"M24",3,2,1.5,1]
[{"$nulls":10},27,"M27",3,2,1.5,1]
[{"$nulls":10},30,"M30",3.5,2,1.5,1]
[{"$nulls":10},33,"M33",3.5,2,1.5]
[{"$nulls":10},36,"M36",4,3,2,1.5]
[{"$nulls":10},42,"M42",4.5,3,2,1.5]
[{"$nulls":10},48,"M48",5,3,2,1.5]
[{"$nulls":10},56,"M56",5.5,4,3,2,1.5]
[{"$nulls":10},64,"M64",6,4,3,2,1.5]
[{"$nulls":10},72,"M72",6,4,3,2,1.5]
[{"$nulls":10},80,"M80",6,4,3,2,1.5]
[{"$nulls":10},90,"M90",6,4,3,2]
[{"$nulls":10},100,"M100",6,4,3,2]
[{"$nulls":10},110,"M110",6,4,3,2]
[{"$nulls":10},125,"M125",6,4,3,2]
[{"$nulls":10},140,"M140",6,4,3,2]
[{"$nulls":10},160,"M160",6,4,3]
[{"$nulls":10},180,"M180",6,4,3]
[{"$nulls":10},200,"M200",6,4,3]
[{"$nulls":10},220,"M220",6,4,3]
[{"$nulls":10},250,"M250",6,4,3]
[{"$nulls":10},280,"M280",6,4]

{"sheet":"英制螺纹","index":1,"n_rows":52,"n_cols":33,"rows_kept":52,"merged":[[0,0,0,7],[1,0,1,7],[2,0,2,7],[3,0,3,7],[4,0,4,7],[5,0,5,7],[6,0,6,7],[7,0,7,7],[8,0,8,7],[9,0,9,7],[10,0,10,7],[11,0,11,1],[11,4,11,5]],"flags":["formulas_cached_only"]}
["英制普通螺纹(统一螺纹)名义尺寸速查"]
["下面可以迅速查询英制普通螺纹(统一螺纹)名义的尺寸。范围按ISO 725的第一选择系列规格。"]
[" 先选择公称尺寸，每英寸牙数选择会变为相应的范围。"]
[]
["计算公式为："]
["P(螺距)=25.4/n(每英寸牙数)"]
["H(原始三角形高度)=0.866 025 404P"]
["中径=D(大径，公称直径)-0.75H"]
["小径=D(大径，公称直径)-1.5H"]
["数值圆整到小数点后第三位。",{"$nulls":9},1,19,null,1.25,7]
["您可以直接通过在下表中选择得到常用规格的尺寸。"]
["公称尺寸(英寸)：",{"$nulls":3},"每英寸牙数(TPI)：",{"$nulls":15},7,null,null,"No.0",0.06,80]
["大径(mm)：",{"v":31.75,"d":"31.750"},"螺距(mm)：",{"v":3.6285714285714286,"d":"3.629"},"中径(mm)：",{"v":29.39317372197143,"d":"29.393"},"小径(mm)：",{"v":27.03634744394286,"d":"27.036"},{"$nulls":12},8,null,null,"No.2",0.086,56,64]
[{"$nulls":20},12,null,null,"No.4",0.112,40,48]
[{"$nulls":20},16,null,null,"No.5",0.125,40,44]
[{"$nulls":20},18,null,null,"No.6",0.138,32,40]
[{"$nulls":20},20,null,null,"No.8",0.164,32,36]
[{"$nulls":20},28,null,null,"No.10",0.19,24,32]
[{"$nulls":20}," ",null,null,"1/4",0.25,20,28,32]
[{"$nulls":23},"5/16",0.3125,18,20,24,28,32]
[{"$nulls":23},"3/8",0.375,16,20,24,28,32]
[{"$nulls":23},"7/16",0.4375,14,16,20,28,32]
[{"$nulls":23},"1/2",0.5,13,16,20,28,32]
[{"$nulls":23},"9/16",0.5625,12,16,18,20,24,28,32]
[{"$nulls":23},"5/8",0.625,11,12,16,18,20,24,28,32]
[{"$nulls":23},"3/4",0.75,10,12,16,20,24,28,32]
[{"$nulls":23},"7/8",0.876,9,12,14,16,20,28,32]
[{"$nulls":23},"1\"",1,8,12,14,16,20,28,32]
[{"$nulls":23},"1-1/8",1.125,7,8,12,16,18,20,28]
[{"$nulls":23},"1-1/4",1.25,7,8,12,16,18,20,28]
[{"$nulls":23},"1-3/8",1.375,6,8,12,16,18,20,28]
[{"$nulls":23},"1-1/2",1.5,6,8,12,16,18,20,28]
[{"$nulls":23},"1-5/8",1.625,6,8,12,16,18,20]
[{"$nulls":23},"1-3/4",1.75,5,6,8,12,16,20]
[{"$nulls":23},"1-7/8",1.875,6,8,12,16,20]
[{"$nulls":23},"2\"",2,4.5,6,8,12,16,20]
[{"$nulls":23},"2-1/4",2.25,4.5,6,8,12,16,20]
[{"$nulls":23},"2-1/2",2.5,4,6,8,12,16,20]
[{"$nulls":23},"2-3/4",2.75,4,6,8,12,16,20]
[{"$nulls":23},"3\"",3,4,6,8,12,16,20]
[{"$nulls":23},"3-1/4",3.25,4,6,8,12,16]
[{"$nulls":23},"3-1/2",3.5,4,6,8,12,16]
[{"$nulls":23},"3-3/4",3.75,4,6,8,12,16]
[{"$nulls":23},"4\"",4,4,6,8,12,16]
[{"$nulls":23},"4-1/4",4.25,4,6,8,12,16]
[{"$nulls":23},"4-1/2",4.5,4,6,8,12,16]
[{"$nulls":23},"4-3/4",4.75,4,6,8,12,16]
[{"$nulls":23},"5\"",5,4,6,8,12,16]
[{"$nulls":23},"5-1/4",5.25,4,6,8,12,16]
[{"$nulls":23},"5-1/2",5.5,4,6,8,12,16]
[{"$nulls":23},"5-3/4",5.75,4,6,8,12,16]
[{"$nulls":23},"6\"",6,4,6,8,12,16]