最新Metric Tap 公制锥丝表
丝锥钻图表-英制和公制
丝锥钻图表-英制和公制•尽管在19世纪才开始推广使用，但是金属加工丝锥的首次记录使用可以追溯到18世纪•英国工程师和实业家约瑟夫·克莱门特（Joseph Clement）在19世纪中叶普及了该工具•创建一个螺纹需要一组三个钻头（丝攻），底孔钻头、头攻、二攻丝锥是机工用来加工螺纹的切削工具。
有记录的丝锥在金属加工中的首次使用记录是在18世纪，而英国工程师和工业家约瑟夫·克莱门特（Joseph Clement）则在19世纪中叶普及了该工具。
然后，我们看到了丝锥钻孔表中出现的标准螺纹。
因此，钻头（丝锥）的开发与该标准化相对应，从而确保了增强的互换性。
攻丝过程丝锥具有各种形式和尺寸，以适应标准化的螺纹。
因此，丝锥钻孔图非常重要。
为了正确地创建螺纹，一个螺纹需要一组三个钻头-丝锥。
即底孔钻头，头攻和二攻丝锥。
首先使用头攻开始从无螺纹底孔孔中切除材料。
这就是为什么它具有锥形钻头，从而使机工可以正确对齐它的原因。
但是，由于形状的原因，它无法一直到孔的末端形成螺纹。
因此，接下来使用二攻进一步攻丝。
但是，二攻无法在未切削的孔上开始攻丝，因此它只能作为第二或第三丝锥参与切削过程。
锥形丝锥仅在某些情况下使用，例如当材料非常硬或孔太小时。
锥度丝锥具有平滑的直径过渡，可减少侵蚀性的切削动作。
这样可以最大程度地减少损坏钻孔的风险。
螺纹几何形状和底孔从上面可以明显看出，要创建螺纹，我们首先需要在工件上钻一个底孔。
在确定了要在特定情况下使用的螺栓之后，我们已经有了配套的底孔钻头和丝锥。
螺栓按规范代码分类，例如：•M4-0.7 x 20“M”表示其螺纹的“公制直径”（请参见下面的丝锥钻表），为4 mm。
第二个数字（0.7）是螺距，对应于两个相邻螺纹之间的距离（以毫米为单位）。
最后，螺栓的长度（以毫米为单位）是20，它是从螺纹尖端到头部底部的长度（椭圆形螺栓除外）。
因此，如果我们想为示例螺栓钻一个孔，则需要使用小于4毫米的钻。
新标准丝锥
KM6515for stainless steelKP6505for steel and cast ironKP6525for steel and cast ironMachine TapsDIN 371 / DIN 376, HSS-E, Metric ISO-Coarse Thread(粗牙螺纹) 有部分是加长丝锥Modified Bottoming Chamfer 2 1/2 to 3 Pitchesmetric sizePmmL1mmd2mmammmaterialmm#M30.556 3.5 2.73868825 M30.556 3.5 2.74035075 M30.556 3.5 2.73868571 M40.763 4.5 3.43868826 M40.763 4.5 3.44035076 M40.763 4.5 3.43868572 M50.8706 4.93868827 M50.8706 4.94035077 M50.8706 4.93868923 M61806 4.93868828 M61806 4.94035078 M61806 4.93868924 M8 1.25908 6.23868829 M8 1.25908 6.24035079 M8 1.25908 6.23868925 M10 1.51001083868830 M10 1.51001084035080 M10 1.51001083868926 M12 1.75110973868831 M12 1.75110974035081 M12 1.75110973868927 M1421101193868832 M1421101194035082 M1421101193868928 M1621601294059049M1621101293868843M1621101294035103M1621101293868929M18 2.512514113868844M18 2.512514114035104M18 2.512514113868930M20 2.520016124059050M20 2.514016123868845M20 2.514016124035105M20 2.514016123868931M22 2.51401814.53868846M22 2.51401814.53868932M2432001814.54059051M2431601814.53868847M2431601814.53868933M27320020164059052M27316020164059120M30 3.518022184059121M30 3.525022184059053M33 3.518025204059122M33 3.525025204059054M36420028224059124M36425028224059056M39420032244059125M39425032244059057M42 4.520032244059126M42 4.530032244059058Machine TapsDIN 371 / DIN 376, HSS-E, Metric ISO-Coarse Thread(粗牙螺纹)有部分加长丝锥Plug Chamfer 3 to 5 Pitchesmetric sizePmmL1mmd2mmammmaterial mm#M30.556 3.5 2.73868079 M30.556 3.5 2.73868174 M40.763 4.5 3.43868080M40.763 4.5 3.43868175M50.8706 4.93868081M50.8706 4.93868176M61806 4.93868082M61806 4.93868177M8 1.25908 6.23868093M8 1.25908 6.23868178M10 1.51001083868094M10 1.51001083868179M12 1.75110973868095M12 1.75110973868180M1421101193868096M1421101193868181M1621601294059038M1621101293868097M1621101293868182M18 2.512514113868098M18 2.512514113868203M20 2.520016124059039M20 2.514016123868099M20 2.514016123868204M22 2.51401814.53868100M22 2.51401814.53868205M2431601814.53868101M2431601814.54059090M2432001814.54059040M27316020164059091M27320020164059041M30 3.518022184059092M30 3.525022184059042M33 3.518025204059113M33 3.525025204059043M36420028224059115M36425028224059045M39420032244059116M39425032244059046M42 4.520032244059117M42 4.530032244059047Machine TapsDIN 374, HSS-E, Metric ISO-Fine Thread(细牙螺纹) 有部分是加长丝锥 (ISO965)Modified Bottoming Chamfer 2 1/2 to 3 Pitchesmetric sizePmmL1mmd2mmammmaterialmm#M81906 4.93868942M81906 4.93868856M101907 5.53868943M101907 5.53868857M10 1.251007 5.53868944M10 1.251007 5.53868858M12 1.5100973868946M12 1.5100973868860M14 1.51001193868948M14 1.51001193868862M16 1.51001293868949M16 1.51001293868863M18 1.511014113868950M18 1.511014113868864M20 1.512516123868951M20 1.512516123868865M2421401814.53868955M36217028224059123M36225028224059055M45218036294059127M45230036394059059Machine TapsDIN 374, HSS-E, Metric ISO-Fine Thread(细牙螺纹)有部分加长丝锥Plug Chamfer 3 to 5 Pitchesmetric sizePmmL1mmd2mmammmaterial mm#M81906 4.93868215M81906 4.93868110M101907 5.53868216M101907 5.53868111M10 1.251007 5.53868217M10 1.251007 5.53868112M12 1.5100973868219M12 1.5100973868114M14 1.51001193868221M14 1.51001193868116M16 1.51001293868222M16 1.51001293868117M18 1.511014113868223M18 1.511014113868118M20 1.512516123868224M20 1.512516123868119M2421401814.53868228M36217028224059114M36225028224059044M45218036294059118M45230036294059048Machine TapsDIN 371 / DIN 376/DIN374, HSS-E, Metric ISO-Coarse Thread and Fine Thread(粗牙Plug Chamfer 3 to 5 Pitches (internal coolant有内冷)metric sizePmmL1mmd2mmammmaterial mm#M50.8706 4.94027886 M50.8706 4.94028488 M61806 4.94027887 M61806 4.94028489 M8 1.25908 6.24027888 M8 1.25908 6.24028490 M10 1.51001084027889M10 1.51001084028491M12 1.75110974027890M12 1.75110974028492M1421101194027916M1421101194028503M1621101294027917M1621101294028504M18 2.512514114027918M18 2.512514114028505M81906 4.94027919M81906 4.94028506M101907 5.54027920M101907 5.54028507M10 1.251007 5.54027921M10 1.251007 5.54028508M12 1.25100974028509M12 1.5100974027922M12 1.5100974028510M14 1.251001194028511M14 1.51001194027923M14 1.51001194028512M16 1.51001294027924M16 1.51001294028513M18 1.511014114027925M18 1.511014114028514Machine TapsDIN 371 / DIN 376/DIN374, HSS-E, Metric ISO-Coarse Thread and Fine Thread(粗牙Modified Bottoming Chamfer 2 1/2 to 3 Pitches(internal coolant有内冷)metric sizePmmL1mmd2mmammmaterial mm#M50.8706 4.94026180 M50.8706 4.93868976 M61806 4.94026181 M61806 4.93868977 M8 1.25908 6.24026182 M8 1.25908 6.23868978M10 1.51001084026223 M10 1.51001083868979 M12 1.75110974026224 M12 1.75110973868980 M1421101194026225 M1421101193868981 M1621601294059060 M1621101294026226 M1621101293868982 M18 2.512514114026227 M18 2.512514113868993 M20 2.514016124059128 M20 2.520016124059061 M20 2.514016123868994 M22 2.51401814.53868995 M2431601814.54059129 M2432001814.54059062 M2431601814.53868996 M27316020164059130 M27320020164059063 M30 3.518022184059131 M30 3.525022184059064 M33 3.518025204059132 M33 3.525025204059065 M36420028224059134 M36425028224059067 M39420032244059135 M39425032244059068 M42 4.520032244059136 M42 4.530032244059069 M50.5706 4.93868997 M60.75806 4.93868998 M80.75908 6.23868999 M81908 6.23869000 M81906 4.94026231 M81906 4.93869003 M101907 5.53869001 M101907 5.54026232 M101907 5.53869004 M10 1.251007 5.53869002 M10 1.251007 5.54026233 M10 1.251007 5.53869005 M12 1.25100974026234 M12 1.25100973869006 M12 1.5100974026235 M12 1.5100973869007 M14 1.251001194026236M14 1.251001193869008M14 1.51001194026237M14 1.51001193869009M16 1.51001294026238M16 1.51001293869010M18 1.511014114026239M18 1.511014113869011M20 1.512516123869012M22 1.51251814.53869013M2221401814.53869014M24 1.51401814.53869015M2421401814.53869016M36217028224059133M36225028224059066M45218036294059137M45230036294059070Machine Taps DIN 371 / DIN 376, HSS-E, Metric ISO-Coarse Thread DIN 13, ISO 965(直槽丝锥,用Bottoming Chamfer 2 1/2 to 3 Pitchesmetric sizePmmL1mmd2mmammmaterial mm#M40.763 4.5 3.44035459M50.8706 4.94035460M61806 4.94035461M8 1.25908 6.24035462M10 1.51001084035463M12 1.75110974035464M1421101194035465M1521001294087336M1621101294035466M18 2.512514114035467M20 2.514016124035468M22 2.51401814.54035469Machine Taps DIN 371 / DIN 376, HSS-E, Metric ISO-Coarse Thread DIN 13, ISO 965(直槽内冷丝Bottoming Chamfer 2 1/2 to 3 Pitches(带内冷)metric sizePmmL1mmd2mmammmaterial mm#M50.8706 4.94035525 M61806 4.94035526 M8 1.25908 6.24035527 M10 1.51001084035528 M12 1.75110974035529 M1421101194035530 M1621101294035531 M18 2.512514114035532 M20 2.514016124035533钴高速钢丝锥KC100合金挤压丝锥ead(粗牙螺纹) 有部分是加长丝锥catalogue ID gradeT630M030X050R6H-D1KM6515M3X0 5 6HX 3F RHSF C 371 HSSE KM6515 T630M030X050R6H-D1KP6505M3X0 5 6HX 3F RHSF C 371 HSSE KP6505 T630M030X050R6H-D1KP6525M3X0 5 6HX 3F RHSF C 371 HSSE KP6525 T630M040X070R6H-D1KM6515M4X0 7 6HX 3F RHSF C 371 HSSE KM6515 T630M040X070R6H-D1KP6505M4X0 7 6HX 3F RHSF C 371 HSSE KP6505 T630M040X070R6H-D1KP6525M4X0 7 6HX 3F RHSF C 371 HSSE KP6525 T630M050X080R6H-D1KM6515M5X0 8 6HX 3F RHSF C 371 HSSE KM6515 T630M050X080R6H-D1KP6505M5X0 8 6HX 3F RHSF C 371 HSSE KP6505 T630M050X080R6H-D1KP6525M5X0 8 6HX 3F RHSF C 371 HSSE KP6525 T630M060X100R6H-D1KM6515M6X1 6HX 3F RHSF C 371 HSSE KM6515T630M060X100R6H-D1KP6505M6X1 6HX 3F RHSF C 371 HSSE KP6505T630M060X100R6H-D1KP6525M6X1 6HX 3F RHSF C 371 HSSE KP6525T630M080X125R6H-D1KM6515M8X1 25 6HX 3F RHSF C 371 HSSE KM6515 T630M080X125R6H-D1KP6505M8X1 25 6HX 3F RHSF C 371 HSSE KP6505 T630M080X125R6H-D1KP6525M8X1 25 6HX 3F RHSF C 371 HSSE KP6525 T630M100X150R6H-D1KM6515M10X1 5 6HX 3F RHSF C 371 HSSE KM6515 T630M100X150R6H-D1KP6505M10X1 5 6HX 3F RHSF C 371 HSSE KP6505 T630M100X150R6H-D1KP6525M10X1 5 6HX 3F RHSF C 371 HSSE KP6525 T630M120X175R6H-D6KM6515M12X1 75 6HX 4F RHSF C 376 HSSE KM6515 T630M120X175R6H-D6KP6505M12X1 75 6HX 4F RHSF C 376 HSSE KP6505 T630M120X175R6H-D6KP6525M12X1 75 6HX 4F RHSF C 376 HSSE KP6525 T630M140X200R6H-D6KM6515M14X2 6HX 4F RHSF C 376 HSSE KM6515T630M140X200R6H-D6KP6505M14X2 6HX 4F RHSF C 376 HSSE KP6505T630M140X200R6H-D6KP6525M14X2 6HX 4F RHSF C 376 HSSE KP6525T630M160X200R6H-XL KP6525M16X2 6HX RHSF SBOTT X-LONG HSS-E KP6525T630M160X200R6H-D6KM6515M16X2 6HX 4F RHSF C 376 HSSE KM6515T630M160X200R6H-D6KP6505M16X2 6HX 4F RHSF C 376 HSSE KP6505T630M160X200R6H-D6KP6525M16X2 6HX 4F RHSF C 376 HSSE KP6525T630M180X250R6H-D6KM6515M18X2 5 6HX 4F RHSF C 376 HSSE KM6515T630M180X250R6H-D6KP6505M18X2 5 6HX 4F RHSF C 376 HSSE KP6505T630M180X250R6H-D6KP6525M18X2 5 6HX 4F RHSF C 376 HSSE KP6505T630M200X250R6H-XL KP6525M20X2.5 6HX RHSF SBOT X-LNG HSS-E KP6525T630M200X250R6H D6KM6515M20X2 5 6HX 4F RHSF C 376 HSSE KM6515T630M200X250R6H-D6KP6505M20X2 5 6HX 4F RHSF C 376 HSSE KP6505T630M200X250R6H-D6KP6520M20X2 5 6HX 4F RHSF C 376 HSSE KP6520T630M220X250R6H D6KM6515M22X2 5 6HX 4F RHSF C 376 HSSE KM6515T630M220X250R6HD6KP6525M22X2 5 6HX 4F RHSF C 376 HSSE KP6525T630M240X300R6H-XL KP6525M24X3.0 6HX RHSF SBOT X-LNG HSS-E KP6525T630M240X300R6H-D6KM6515M24X3 6HX 5F RHSF C 376 HSSE KM6515T630M240X300R6H-D6KP6525M24X3 6HX 5F RHSF C 376 HSSE KP6525T630M270X300R6H-XL KP6525M27X3 6HX RHSF SBOTT X-LONG HSS-E KP6525T630M270X300R6H-D6KP6525M27X3 6HX RHSF SBOTT 376 HSS-E-PM KP6525T630M300X350R6H-D6KP6525M30X3.5 6HX RHSF SBOT 376 HSS-E-PM KP652T630M300X350R6H-XL KP6525M30X3.5 6HX RHSF SBOT X-LNG HSS-E KP6525T630M330X350R6H-D6KP6525M33X3.5 6HX RHSF SBOT 376 HSS-E-PM KP652T630M330X350R6H-XL KP6525M33X3.5 6HX RHSF SBOT X-LNG HSS-E KP6525T630M360X400R6H-D6KP6525M36X4 6HX RHSF SBOTT 376 HSS-E-PM KP6525T630M360X400R6H-XL KP6525M36X4 6HX RHSF SBOT X-LONG HSS-E KP6525T630M390X400R6H-D6KP6525M39X4 6HX RHSF SBOTT 376 HSS-E-PM KP6525T630M390X400R6H-XL KP6525M39X4 6HX RHSF SBOT X-LONG HSS-E KP6525T630M420X450R6H-D6KP6525M42X4.5 6HX RHSF SBOT 376 HSS-E-PM KP652T630M420X450R6H-XL KP6525M42X4.5 6HX RHSF SBOT X-LNG HSS-E KP6525 rse Thread(粗牙螺纹)有部分加长丝锥catalogue ID gradeT620M030X050R6H-D1KM6515M3X0.5 6HX 3F LHSF D 371 HSSE KM6515T620M030X050R6H-D1KP6525M3X0.5 6HX 3F LHSF D 371 HSSE KP6525T620M040X070R6H-D1KM6515M4X0.7 6HX 3F LHSF D 371 HSSE KM6515T620M040X070R6H-D1KP6525M4X0.7 6HX 3F LHSF D 371 HSSE KP6525T620M050X080R6H-D1KM6515M5X0.8 6HX 3F LHSF D 371 HSSE KM6515T620M050X080R6H-D1KP6525M5X0.8 6HX 3F LHSF D 371 HSSE KP6525T620M060X100R6H-D1KM6515M6X1 6HX 3F LHSF D 371 HSSE KM6515T620M060X100R6H-D1KP6525M6X1 6HX 3F LHSF D 371 HSSE KP6525T620M080X125R6H-D1KM6515M8X1.25 6HX 3F LHSF D 371 HSSE KM6515T620M080X125R6H-D1KP6525M8X1.25 6HX 3F LHSF D 371 HSSE KP6525T620M100X150R6H-D1KM6515M10X1.5 6HX 3F LHSF D 371 HSSE KM6515T620M100X150R6H-D1KP6525M10X1.5 6HX 3F LHSF D 371 HSSE KP6525T620M120X175R6H-D6KM6515M12X1.75 6HX 4F LHSF D 376 HSSE KM6515T620M120X175R6H-D6KP6525M12X1.75 6HX 3F LHSF D 376 HSSE KP6525T620M140X200R6H-D6KM6515M14X2 6HX 4F LHSF D 376 HSSE KM6515T620M140X200R6H-D6KP6525M14X2 6HX 4F LHSF D 376 HSSE KP6525T620M160X200R6H-XL KP6525M16X2 6HX LHSF PLG X-LNG HSS-E-PM KP6525T620M160X200R6H-D6KM6515M16X2 6HX 4F LHSF D 376 HSSE KM6515T620M160X200R6H-D6KP6525M16X2 6HX 4F LHSF D 376 HSSE KP6525T620M180X250R6H D6KM6515M18X2.5 6HX 4F LHSF D 376 HSSE KM6515T620M180X250R6HD6KP6520M18X2.5 6HX 4F LHSF D 376 HSSE KP6520T620M200X250R6H-XL KP6525M20X2.5 6HX LHSF PLG X-LNG HSS-E KP6525T620M200X250R6H-D6KM6515M20X2.5 6HX 4F LHSF D 376 HSSE KM6515T620M200X250R6H-D6KP6525M20X2.5 6HX 4F LHSF D 376 HSSE KP6525T620M220X250R6H D6KM6515M22X2.5 6HX 4F LHSF D 376 HSSE KM6515T620M220X250R6HD6KP6520M22X2.5 6HX 4F LHSF D 376 HSSE KP6520T620M240X300R6H D6KM6515M24X3 6HX 5F LHSF D 376 HSSE KM6515T620M240X300R6H-D6KP6525M24X3 6HX LHSF PLUG 376 HSS-E-PM KP6525T620M240X300R6H-XL KP6525M24X3 6HX LHSF PLG X-LNG HSS-E-PM KP6525T620M270X300R6H-D6KP6525M27X3 6HX LHSF PLUG 376 HSS-E-PM KP6525T620M270X300R6H-XL KP6525M27X3 6HX LHSF PLG X-LNG HSS-E-PM KP6525T620M300X350R6H-D6KP6525M30X3.5 6HX LHSF PLUG 376 HSS-E-PM KP652T620M300X350R6H-XL KP6525M30X3.5 6HX LHSF PLG X-LNG HSS-E KP6525T620M330X350R6H-D6KP6525M33X3.5 6HX LHSF PLUG 376 HSS-E-PM KP625T620M330X350R6H-XL KP6525M33X3.5 6HX LHSF PLG X-LNG HSS-E KP6525T620M360X400R6H-D6KP6525M36X4 6HX LHSF PLUG 376 HSS-E-PM KP6525T620M360X400R6H-XL KP6525M36X4 6HX LHSF PLG X-LNG HSS-E-PM KP6525T620M390X400R6H-D6KP6525M39X4 6HX LHSF PLUG 376 HSS-E-PM KP6525T620M390X400R6H-XL KP6525M39X4 6HX LHSF PLG X-LNG HSS-E-PM KP6525T620M420X450R6H-D6KP6525M42X4.5 6HX LHSF PLUG 376 HSS-E-PM KP652T620M420X450R6H-XL KP6525M42X4.5 6HX LHSF PLG X-LNG HSS-E KP6525细牙螺纹) 有部分是加长丝锥 (ISO965)catalogue ID gradeT630MF080X100R6HX-D4KP6525M8X1 6HX RHSF SBOTT 374 HSS-E-PMT630MF080X100R6HX-D4KM6515M8X1 6HX RHSF SBOTT 374 HSS-E-PMT630MF100X100R6HX-D4KP6525M10X1 6HX RHSF SBOTT 374 HSS-E-PMT630MF100X100R6HX-D4KM6515M10X1 6HX RHSF SBOTT 374 HSS-E-PMT630MF100X125R6HX-D4KP6525M10X1.25 6HX RHSF SB 374 HSS-E-PMT630MF100X125R6HX-D4KM6515M10X1.25 6HX RHSF SB 374 HSS-E-PMT630MF120X150R6HX-D4KP6525M12X1.5 6HX RHSF SBO 374 HSS-E-PMT630MF120X150R6HX-D4KM6515M12X1.5 6HX RHSF SBOT 374 HSS-E-PMT630MF140X150R6HX-D4KP6525M14X1.5 6HX RHSF SBO 374 HSS-E-PMT630MF140X150R6HX-D4KM6515M14X1.5 6HX RHSF SBOT 374 HSS-E-PMT630MF160X150R6HX-D4KP6525M16X1.5 6HX RHSF SBO 374 HSS-E-PMT630MF160X150R6HX-D4KM6515M16X1.5 6HX RHSF SBOT 374 HSS-E-PMT630MF180X150R6HX-D4KP6525M18X1.5 6HX RHSF SBO 374 HSS-E-PMT630MF180X150R6HX-D4KM6515M18X1.5 6HX RHSF SBOT 374 HSS-E-PMT630MF200X150R6HD4KP6520M20X1.5 6HX 4F RHSF C 374 HSSE KP6520T630MF200X150R6H D4KM6515M20X1.5 6HX 4F RHSF C 374 HSSE KM6515T630MF240X200R6HD4KP6520M24X2 6HX 5F RHSF C 374 HSSE KP6520T630MF360X200R6H-D4KP6525M36X2 6HX RHSF SBOTT 374 HSS-E-PM KP6525T630MF360X200R6H-XL KP6525M36X2 6HX RHSF SBOTT X-LNG HSS-E KP6525T630MF450X200R6H-D4KP6525M45X2 6HX RHSF SBOTT 374 HSS-E-PM KP6525T630MF450X200R6H-XL KP6525M45X2 6HX RHSF SBOT X-LONG HSS-E KP6525细牙螺纹)有部分加长丝锥catalogue ID gradeT620MF080X100R6HX-D4KP6525M8X1 6HX LHSF PLUG 374 HSS-E-PMT620MF080X100R6HX-D4KM6515M8X1 6HX LHSF PLUG 374 HSS-E-PMT620MF100X100R6HX-D4KP6525M10X1 6HX LHSF PLUG 374 HSS-E-PMT620MF100X100R6HX-D4KM6515M10X1 6HX LHSF PLUG 374 HSS-E-PMT620MF100X125R6HX-D4KP6525M10X1.25 6HX LHSF PL 374 HSS-E-PMT620MF100X125R6H D4KM6515M10X1.25 6HX 3F LHSF D 374 HSSE KM6515T620MF120X150R6HX-D4KP6525M12X1.5 6HX LHSF PLG 374 HSS-E-PMT620MF120X150R6HX-D4KM6515M12X1.5 6HX LHSF PLG 374 HSS-E-PMT620MF140X150R6HX-D4KP6525M14X1.5 6HX LHSF PLG 374 HSS-E-PMT620MF140X150R6HX-D4KM6515M14X1.5 6HX LHSF PLG 374 HSS-E-PMT620MF160X150R6HX-D4KP6525M16X1.5 6HX LHSF PLG 374 HSS-E-PMT620MF160X150R6HX-D4KM6515M16X1.5 6HX LHSF PLG 374 HSS-E-PMT620MF180X150R6HX-D4KP6525M18X1.5 6HX LHSF PLG 374 HSS-E-PMT620MF180X150R6HX-D4KM6515M18X1.5 6HX LHSF PLG 374 HSS-E-PMT620MF200X150R6HD4KP6525M20X1.5 6HX 4F LHSF D 374 HSSE KP6520T620MF200X150R6H D4KM6515M20X1.5 6HX 4F LHSF D 374 HSSE KM6515T620MF240X200R6HD4KP6525M24X2 6HX 5F LHSF D 374 HSSE KP6520T620MF360X200R6H-D4KP6525M36X2 6HX LHSF PLUG 374 HSS-E-PM KP6525T620MF360X200R6H-XL KP6525M36X2 6HX LHSF PLG X-LNG HSS-E-PM KP6525T620MF450X200R6H-D4KP6525M45X2 6HX LHSF PLUG 374 HSS-E-PM KP6525T620MF450X200R6H-XL KP6525M45X2 6HX LHSF PLG X-LNG HSS-E-PM KP6525 ISO-Coarse Thread and Fine Thread(粗牙螺纹和细牙螺纹)catalogue ID gradeT621M050X080R6HX-D1KM6515M5X0.8 6HX LHSF D 371 CH HSS-E-PMT621M050X080R6HX-D1KP6525M5X0.8 6HX LHSF D 371 CH HSS-E-PMT621M060X100R6HX-D1KM6515M6X1 6HX LHSF D 371 CH HSS-E-PMT621M060X100R6HX-D1KP6525M6X1 6HX LHSF D 371 CH HSS-E-PMT621M080X125R6HX-D1KM6515M8X1.25 6HX LHSF D 371 CH HSS-E-PMT621M080X125R6HX-D1KP6525M8X1.25 6HX LHSF D 371 CH HSS-E-PMT621M100X150R6HX-D1KM6515M10X1.5 6HX LHSF D 371 CH HSS-E-PMT621M120X175R6HX-D6KM6515M12X1.75 6HX LHSF D376 CH HSS-E-PMT621M120X175R6HX-D6KP6525M12X1.75 6HX LHSF D376 CH HSS-E-PMT621M140X200R6HX-D6KM6515M14X2 6HX LHSF D 376 CH HSS-E-PMT621M140X200R6HX-D6KP6525M14X2 6HX LHSF D 376 CH HSS-E-PMT621M160X200R6HX-D6KM6515M16X2 6HX LHSF D 376 CH HSS-E-PMT621M160X200R6HX-D6KP6525M16X2 6HX LHSF D 376 CH HSS-E-PMT621M180X250R6HX-D6KM6515M18X2.5 6HX LHSF D 376 CH HSS-E-PMT621M180X250R6HX-D6KP6525M18X2.5 6HX LHSF D 376 CH HSS-E-PMT621MF080X100R6HX-D4KM6515M8X1 6HX LHSF D 374 CH HSS-E-PMT621MF080X100R6HX-D4KP6525M8X1 6HX 3F LHSF D 374 CH HSSE KP6525T621MF100X100R6HX-D4KM6515M10X1 6HX LHSF D 374 CH HSS-E-PMT621MF100X100R6HX-D4KP6525M10X1 6HX 3F LHSF D 374 CH HSSE KP6525T621MF100X125R6HX-D4KM6515M10X1.25 6HX LHSF D374 CH HSS-E-PMT621MF100X125R6HX-D4KP6525M10X1.25 6HX 3F LHSF D 374 CH HSSE KP652T621MF120X125R6HX-D4KP6525M12X1.25 6HX 3F LHSF D 374 CH HSSE KP652T621MF120X150R6HX-D4KM6515M12X1.5 6HX LHSF D 374 CH HSS-E-PMT621MF120X150R6HX-D4KP6525M12X1.5 6HX 3F LHSF D 374 CH HSSE KP6525T621MF140X125R6HX-D4KP6525M14X1.25 6HX 4F LHSF D 374 CH HSSE KP652T621MF140X150R6HX-D4KM6515M14X1.5 6HX LHSF D 374 CH HSS-E-PMT621MF140X150R6HX-D4KP6525M14X1.5 6HX 4F LHSF D 374 CH HSSE KP6525T621MF160X150R6HX-D4KM6515M16X1.5 6HX LHSF D 374 CH HSS-E-PMT621MF160X150R6HX-D4KP6525M16X1.5 6HX 4F LHSF D 374 CH HSSE KP6525T621MF180X150R6HX-D4KM6515M18X1.5 6HX LHSF D 374 CH HSS-E-PMT621MF180X150R6HX-D4KP6525M18X1.5 6HX 4F LHSF D 374 CH HSSE KP6525 ISO-Coarse Thread and Fine Thread(粗牙螺纹和细牙螺纹)有部分加长丝锥al coolant有内冷)catalogue ID gradeT631M050X080R6HX-D1KM6515M5X0,8 6HX RHSF C 371 CH HSS-E-PMT631M050X080R6HX-D1KP6525M5X0,8 6HX RHSF C 371 CH HSS-E-PMT631M060X100R6HX-D1KM6515M6X1 6HX RHSF C 371 CH HSS-E-PMT631M060X100R6HX-D1KP6525M6X1 6HX RHSF C 371 CH HSS-E-PMT631M080X125R6HX-D1KM6515M8X1,25 6HX RHSF C 371 CH HSS-E-PMT631M080X125R6HX-D1KP6525M8X1,25 6HX RHSF C 371 CH HSS-E-PMT631M100X150R6HX-D1KP6525M10X1,5 6HX RHSF C 371 CH HSS-E-PMT631M120X175R6HX-D6KM6515M12X1,75 6HX RHSF C376 CH HSS-E-PMT631M120X175R6HX-D6KP6525M12X1,75 6HX RHSF C376 CH HSS-E-PMT631M140X200R6HX-D6KM6515M14X2 6HX RHSF C 376 CH HSS-E-PMT631M140X200R6HX-D6KP6525M14X2 6HX RHSF C 376 CH HSS-E-PMT631M160X200R6H-XL KP6525M16X2 6HX RHSF SBOT XLNG CH HSS-E KP6525 T631M160X200R6HX-D6KM6515M16X2 6HX RHSF C 376 CH HSS-E-PMT631M160X200R6HX-D6KP6525M16X2 6HX RHSF C 376 CH HSS-E-PMT631M180X250R6HX-D6KM6515M18X2,5 6HX RHSF C 376 CH HSS-E-PMT631M180X250R6HX-D6KP6525M18X2,5 6HX RHSF C 376 CH HSS-E-PMT631M200X250R6H-D6KP6525M20X2.5 6HX RHSF SBOT 376 CH HSS-E KP6525 T631M200X250R6H-XL KP6525M20X2.5 6HX RHSF SBOT XLNG CH HSSE KP6525 T631M200X250R6HD6KP6520M20X2 5 6HX 4F RHSF C 376 CH HSSE KP652 T631M220X250R6HD6KP6520M22X2 5 6HX 4F RHSF C 376 CH HSSE KP6520 T631M240X300R6H-D6KP6525M24X3.0 6HX RHSF SBOT 376 CH HSS-E KP6525 T631M240X300R6H-XL KP6525M24X3.0 6HX RHSF SBOT XLNG CH HSSE KP6525 T631M240X300R6HD6KP6520M24X3 6HX 5F RHSF C 376 CH HSSE KP6520T631M270X300R6H-D6KP6525M27X3 6HX RHSF SBOT 376 CH HSS-E KP6525 T631M270X300R6H-XL KP6525M27X3 6HX RHSF SBOT XLNG CH HSSE KP6525 T631M300X350R6H-D6KP6525M30X3.5 6HX RHSF SBOT 376 CH HSS-E KP6525 T631M300X350R6H-XL KP6525M30X3.5 6HX RHSF SBOT XLNG CH HSSE KP6525 T631M330X350R6H-D6KP6525M33X3.5 6HX RHSF SBOT 376 CH HSS-E KP6525 T631M330X350R6H-XL KP6525M33X3.5 6HX RHSF SBOT XLNG CH HSSE KP6525 T631M360X400R6H-D6KP6525M36X4 6HX RHSF SBOTT 376 CH HSS-E KP6525 T631M360X400R6H-XL KP6525M36X4 6HX RHSF SBOT XLNG CH HSSE KP6525 T631M390X400R6H-D6KP6525M39X4 6HX RHSF SBOTT 376 CH HSS-E KP6525 T631M390X400R6H-XL KP6525M39X4 6HX RHSF SBOT XLNG CH HSSE KP6525 T631M420X450R6H-D6KP6525M42X4.5 6HX RHSF SBOT 376 CH HSS-E KP6525 T631M420X450R6H-XL KP6525M42X4.5 6HX RHSF SBOT XLNG CH HSSE KP6525 T631MF050X050R6HD1KP6520M5X0 5 6HX 3F RHSF C 371 CH HSSE KP6520 T631MF060X075R6HD1KP6520M6X0 75 6HX 3F RHSF C 371 CH HSSE KP6520 T631MF080X075R6HD1KP6520M8X0 75 6HX 3F RHSF C 371 CH HSSE KP6520 T631MF080X100R6HD1KP6520M8X1 6HX 3F RHSF C 371 CH HSSE KP6520T631MF080X100R6HX-D4KM6515M8X1 6HX RHSF C 374 CH HSS-E-PMT631MF080X100R6HX-D4KP6525M8X1 6HX RHSF C 374 CH HSS-E-PMT631MF100X100R6HD1KP6520M10X1 6HX 3F RHSF C 371 CH HSSE KP6520T631MF100X100R6HX-D4KM6515M10X1 6HX RHSF C 374 CH HSS-E-PMT631MF100X100R6HX-D4KP6525M10X1 6HX RHSF C 374 CH HSS-E-PMT631MF100X125R6HD1KP6520M10X1 25 6HX 3F RHSF C 371 CH HSSE KP6520 T631MF100X125R6HX-D4KM6515M10X1,25 6HX RHSF C374 CH HSS-E-PMT631MF100X125R6HX-D4KP6525M10X1,25 6HX RHSF C374 CH HSS-E-PMT631MF120X125R6HX-D4KM6515M12X1,25 6HX RHSF C374 CH HSS-E-PMT631MF120X125R6HX-D4KP6525M12X1,25 6HX RHSF C374 CH HSS-E-PMT631MF120X150R6HX-D4KM6515M12X1,5 6HX RHSF C 374 CH HSS-E-PMT631MF120X150R6HX-D4KP6525M12X1,5 6HX RHSF C 374 CH HSS-E-PMT631MF140X125R6HX-D4KM6515M14X1,25 6HX RHSF C374 CH HSS-E-PMT631MF140X150R6HX-D4KM6515M14X1,5 6HX RHSF C 374 CH HSS-E-PMT631MF140X150R6HX-D4KP6525M14X1,5 6HX RHSF C 374 CH HSS-E-PMT631MF160X150R6HX-D4KM6515M16X1,5 6HX RHSF C 374 CH HSS-E-PMT631MF160X150R6HX-D4KP6525M16X1,5 6HX RHSF C 374 CH HSS-E-PMT631MF180X150R6HX-D4KM6515M18X1,5 6HX RHSF C 374 CH HSS-E-PMT631MF180X150R6HX-D4KP6525M18X1,5 6HX RHSF C 374 CH HSS-E-PMT631MF200X150R6HD4KP6520M20X1 5 6HX 4F RHSF C 374 CH HSSE KP6520T631MF220X150R6HD4KP6520M22X1 5 6HX 4F RHSF C 374 CH HSSE KP6520T631MF220X200R6HD4KP6520M22X2 6HX 4F RHSF C 374 CH HSSE KP6520T631MF240X150R6HD4KP6520M24X1 5 6HX 5F RHSF C 374 CH HSSE KP6520T631MF240X200R6HD4KP6520M24X2 6HX 5F RHSF C 374 CH HSSE KP6520T631MF360X200R6H-D4KP6525M36X2 6HX RHSF SBOTT 374 CH HSS-E KP6525T631MF360X200R6H-XL KP6525M36X2 6HX RHSF SBOT XLNG CH HSSE KP6525T631MF450X200R6H-D4KP6525M45X2 6HX RHSF SBOTT 374 CH HSS-E KP6525T631MF450X200R6H-XL KP6525M45X2 6HX RHSF SBOT XLNG CH HSSE KP6525 arse Thread DIN 13, ISO 965(直槽丝锥,用于铸铁)catalogue ID gradeT640M040X070R6HX-D1KP6525M4X0.7 6HX STFL SBOTT 371 HSS-E-PMT640M050X080R6HX-D1KP6525M5X0.8 6HX STFL SBOTT 371 HSS-E-PMT640M060X100R6HX-D1KP6525M6X1 6HX STFL SBOTT 371 HSS-E-PMT640M080X125R6HX-D1KP6525M8X1.25 6HX STFL SBOTT 371 HSS-E-PMT640M100X150R6HX-D1KP6525M10X1.5 6HX STFL SBOTT 371 HSS-E-PMT640M120X175R6HX-D6KP6525M12X1.75 6HX STFL SBOT 376 HSS-E-PMT640M140X200R6HX-D6KP6525M14X2 6HX STFL SBOTT 376 HSS-E-PMT640M15X200R6HX-D4KP6525M15X2 6HX STFL SBOTT 374 HSS-E-PMT640M160X200R6HX-D6KP6525M16X2 6HX STFL SBOTT 376 HSS-E-PMT640M180X250R6HX-D6KP6525M18X2.5 6HX STFL SBOTT 376 HSS-E-PMT640M200X250R6HX-D6KP6525M20X2.5 6HX STFL SBOTT 376 HSS-E-PMT640M220X250R6HX-D6KP6525M22X2.5 6HX STFL SBOTT 376 HSS-E-PMarse Thread DIN 13, ISO 965(直槽内冷丝锥,用于铸铁)catalogue ID gradeT641M050X080R6HX-D1KP6525M5X0.8 6HX STFL SBOT 371 CH HSS-E-PM T641M060X100R6HX-D1KP6525M6X1 6HX STFL SBOT 371 CH HSS-E-PMT641M080X125R6HX-D1KP6525M8X1.25 6HX STFL SBOT 371 CH HSS-E-PM T641M100X150R6HX-D1KP6525M10X1.5 6HX STFL SBOT 371 CH HSS-E-PM T641M120X175R6HX-D6KP6525M12X1.75 6HX STFL SBOT 376 CH HSS-E-PM T641M140X200R6HX-D6KP6525M14X2 6HX STFL SBOT 376 CH HSS-E-PMT641M160X200R6HX-D6KP6525M16X2 6HX STFL SBOT 376 CH HSS-E-PMT641M180X250R6HX-D6KP6525M18X2.5 6HX STFL SBOT 376 CH HSS-E-PM T641M200X250R6HX-D6KP6525M20X2.5 6HX STFL SBOT 376 CH HSS-E-PM。
常用螺纹底孔查询
495TAPS丝锥公制螺纹Metricscrew threadsJIS B 0209-1982（单位：mm）（单位：mm）RECOMMENDED DRILL HOLE SIZE螺纹底孔直径表RECOMMENDED DRILL HOLE SIZE螺纹底孔直径表496螺纹底孔直径表 RECOMMENDED DRILL HOLE SIZER E C O MM E N D E DD R I L LH O L ES I Z E 螺纹底孔直径表公制螺纹Metricscrew threadsJIS B 0209-1982（单位：mm）（单位：mm）497TAPS丝锥RECOMMENDED DRILL HOLE SIZE螺纹底孔直径表R E C O MM E N D E D D R I L L H O L ES I Z E螺纹底孔直径表美制螺纹Unified(单位：mm)(单位：mm)498螺纹底孔直径表 RECOMMENDED DRILL HOLE SIZER E C O MM E N D E D D R I L L H O L ES I Z E 螺纹底孔直径表Screw threads for sewing machines（单位：mm）（单位：mm）Whitworth Coarse screw threads（单位：mm） 级时的最大内径和最小内径嵌合率 ＝ 内螺纹外径的基本尺寸ー底孔尺寸 ×100％ 2×（内螺纹牙山基准高） 2） W ⅛、316在JIS 规章中没有规定，请参考其他尺寸。
499TAPS丝锥RECOMMENDED DRILL HOLE SIZE螺纹底孔直径表R E C O MM E N D E D D R I L L H O L ES I Z E螺纹底孔直径表Taper pipe threads（单位：mm）1. JIS B 0203锥管内螺纹的计算值为，当基准值位于连接部端面时，允许有效螺纹的小端径处存在不完全山形的直孔孔径。
标准丝锥规格表
标准丝锥规格表
标准丝锥规格表
丝锥是一种用于切割螺纹的工具，通常由高速钢、碳钢或合金钢制成。
以下是一些常见的标准丝锥规格：
1. 丝锥直径：从1mm到100mm，大多数丝锥直径为3mm至30mm。
2. 丝锥长度：通常为50mm至500mm。
3. 丝锥螺距：通常为0.5mm至6mm，常见的螺距为1mm、1.25mm、1.5mm、1.75mm、2mm、2.5mm、3mm、4mm和6mm。
4. 丝锥种类：常见的种类包括M型、MF型、BSP型、NPT型、BSW型等。
M型丝锥适用于公制螺纹，MF型丝锥适用于特殊精密螺纹。
BSP 型丝锥适用于英制螺纹，NPT型丝锥适用于美制螺纹，BSW型丝锥适用于英制粗牙螺纹。
5. 丝锥材料：高速钢、碳钢和合金钢等。
总之，选择适当的丝锥规格和材料将有助于提高螺纹切削的质量和效率。
丝锥规格对照表
24
24 × 3
支
120
130
45
45
产品名称型号规格
单位
总长（MM）
刃长（MM）
机用丝锥
旧标
新标
旧标
新标
M24 × 2
支
95
120
32
35
24 × 1.5
支
95
120
32
35
24 × 1
支
95
114
32
24
27 × 3
支
120
135
45
45
27 × 2
支
95
127
32
37
27 × 1.5
支
95
付
84
24
20×1
付
114
24
12×1
付
80
22
27×3
付
135
45
14×2
付
95
30
27×1.5
付
127
37
27×2
付
127
37
27×1
付
120
25
产品规格名称型号
单位
主要尺寸
产品规格名称型号
单位
主要尺寸
英制手用丝锥
总长mm
刃长mm
英制手用丝锥
总长mm
刃长mm
3/16"×24
付
60.33
22.23
付
66
19
22×2.5
付
118
38
10×1.5
付
80
24
22×2
付
118
公英美制螺纹孔径和滚造径对照表
公制迫牙丝攻钻孔径
规格
精度等级
G4-G6 G7-G8
G9
M1.0×0.25 0.86
0.88
--
M1.1×0.25 0.96
0.98
--
M1.2×0.25 1.06
1.08
--
M1.4×0.3 1.24
1.25
--
M1.6×0.35 1.41
1.43
--
M1.7×0.35 1.51
1.53
--
M1.8×0.35 1.61
2 级牙钻孔径 最大 最小 0.821 0.783 0.921 0.883 1.021 0.983 1.221 1.183 1.421 1.383 1.500 1.460 1.621 1.583 1.785 1.729 1.985 1.929 2.061 2.001 2.221 2.121 2.246 2.186 2.721 2.621 3.221 3.121 3.599 3.459 4.099 3.959 4.599 4.459 5.099 4.959 5.378 5.188 5.550 5.400 6.378 6.188 6.550 6.400 7.153 6.917 7.378 7.188 7.520 7.400 8.153 7.917 8.378 8.188 8.912 8.647 9.153 8.917 9.378 9.188 9.520 9.400 10.153 9.917 10.378 10.188 10.676 10.376 11.153 10.917 11.520 11.400 12.676 12.376 13.153 12.917 13.676 13.376 14.153 13.917 14.676 14.376 15.153 14.917
最全的公制英制螺纹对照表
(單位：mm) 內螺紋小徑
最小直徑
1.425 1.695 1.941 2.157 2.487 2.642 3.302 3.683 4.344 4.979 6.401 7.798 9.144 10.592 11.989 13.386 16.307 19.177 21.971 24.638 27.813 30.353 33.528 38.964 44.679
2.221 2.721 3.221 3.599 4.099 4.599 5.099 5.378 6.378 7.153 7.378 8.153 8.378 8.912 9.153 9.378 10.153 10.378 10.676 10.912 11.153 12.676 13.153 13.676 14.153 14.676 15.153 15.676 16.153 16.210 16.676 17.153 18.210 18.676 19.153 20.210 20.676 21.153 22.210 22.676 23.153 23.210 23.676 24.153
崁合度區分：中(注1)2級(注2) 下孔徑
2.22 (75%) 2.72 (75%) 3.22 (75%) 3.59 (75%) 4.09 (75%) 4.59 (75%) 5.09 (75%) 5.35 (80%) 6.35 (80%) 7.13 (80%) 7.35 (80%) 8.13 (80%) 8.35 (80%) 8.85 (85%) 9.13 (80%) 9.35 (80%) 10.13 (80%) 10.35 (80%) 10.62 (85%) 10.85 (85%) 11.13 (80%) 12.62 (85%) 13.13 (80%) 13.62 (85%) 14.13 (80%) 14.62 (85%) 15.13 (80%) 15.62 (85%) 16.13 (80%) 16.2 (85%) 16.62 (85%) 17.13 (80%) 18.2 (85%) 18.62 (85%) 19.13 (80%) 20.2 (85%) 20.62 (85%) 21.13 (80%) 22.2 (85%) 22.62 (85%) 23.13 (80%) 23.2 (85%) 23.62 (85%) 24.13 (80%)
公制美制英制螺纹对照表
公制/美制/英制螺纹对照表A型美制螺纹（UNF）常用规格外螺纹螺纹-4 9/16"-19牙 14.28 13.08 -6 11/16''-16 17.46 16.1-8 13/16''-16 20.64 19.28-10 1''-14 25.40 23.57-12 1(3/16)''-12 30.00 28.32 -16 1(7/16)''-12 36.51 34.67 -20 1(11/16)''-12 42.86 41.02C型JIC37度美制UNF螺纹常用规格-4 7/16”-20 11.11 10.03-5 1/2”-20 12.70 11.32-6 9/16”-18 14.28 13.08-8 3/4”-16 19.00 17.68-10 7/8”-14 22.22 20.68-12 1(1/16)"-12 26.98 25.15 -16 1(5/16)"-12 33.33 31.5 -20 1(5/8)"-12 41.28 39.44 -24 1(7/8)"-12 47.62 45.8-32 2(1/2)"-12 63.5 61.67英制圆柱管螺纹（BSPP）常用规格-4 1/4”-19 13.157 11.55-6 3/8”-19 16.662 14.95-8 1/2”-14 20.955 18.63-12 3/4”-14 26.441 24.11-16 1”-11 33.249 30.29-20 1(1/4)''-11 41.91 38.95英制圆锥管螺纹（BSPT）常用规格基面大径基准距离1/4”-19 13.157 63/8”-19 16.662 6.41/2”-14 20.955 8.23/4”-14 26.441 9.51”-11 33.249 10.41(1/4)''-11 41.91 12.7美制圆锥管螺纹（NPT）1/8”-27 10.24 41/4”-18 13.60 43/8”-18 17.04 4.321/2”-14 21.22 4.483/4”-14 26.57 4.751”-11(1/2)” 33.22 4.61(1/4)”-11.5 41.96 4.832007-4-20 16:33评论(7)3/8-16 0.3643 0.3737 0.3287 0.3331 0.2970 8.40 8.44(0.375-16) 9.2532 9.4920 8.3490 8.4607 7.54387/16-14 0.4258 0.4361 0.3850 0.3897 0.3485 9.83 9.87(0.4375-14) 10.8153 11.0769 9.7790 9.8984 8.85191/2-13 0.4876 0.4985 0.4435 0.4485 0.4041 11.34 11.38(0.50-13) 12.3850 12.6619 11.2649 11.3919 10.26419/16-12 0.5495 0.5609 0.5016 0.5068 0.4587 12.80 12.84(0.5625-12) 13.9573 14.2469 12.7406 12.8727 11.65105/8-11 0.6113 0.6234 0.5589 0.5644 0.5119 14.27 14.32 (0.625-11) 15.5270 15.8344 14.1961 14.3358 13.00233/4-10 0.7353 0.7482 0.6773 0.6832 0.6255 17.28 17.33 (0.750-10) 18.6766 19.0043 17.2034 17.3533 15.88777/8-9 0.8592 0.8731 0.7946 0.8009 0.7368 20.27 20.32(0.875-9) 21.8237 22.1767 20.1828 20.3429 18.71471"-8 0.9830 0.9980 0.9100 0.9168 0.8446 23.22 23.27(1.000-8) 24.9682 25.3492 23.1140 23.2867 21.45281.螺胚直径指滚丝前的尺寸，数值为依经验公式计算而得，在实践中需验证。