紧固件螺纹直径及螺距对照表

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1、紧固件螺纹直径与螺距对照表螺纹规格M3M4M5M6M8M10M12M14M16M18M20M22M24M27M30M33M36M39M42M45M48M52M56M60M64粗牙螺距0.50.70.81.01.251.51.752.02.02.52.52.53.03.03.53.54.04.04.54.55.05.05.55.56.0细牙螺距----1.01.0-1.251.5-1.251.51.51.52.0-1.52.02.02.02.02.03.03.03.03.03.04.04.04.04.0螺栓、螺钉、螺柱公称长度表6810121620253035404550(5

2、5)60(65)7075808590(95)100105110115120125130140150160170180190200220240260280300注：尽量不采用括号内尺寸螺栓、螺钉、螺柱螺纹的公称长度螺纹规格M3M4M5M6M8M10M12M14M16M18M20M22M24M27M30M33M36M39M42M45M48M52M56M60M64粗牙螺距1214161822263034384246505460667278849096102----注：公称长度1螺纹长度b,则：①1≤125b=2d+6②1>125—200b=2d+2③1>200b=2d+5公、英制

3、对照表、紧固件常用尺寸规格规格牙距规格称呼径牙数粗牙细牙极细牙粗牙细牙韦氏牙M30.50.354#2.94048M40.70.56#3.53240M50.80.58#4.23236M61.00.7510#4.82432M71.00.7512#5.52428M81.251.00.751/46.35202820M101.51.251.05/167.94182418M121.751.51.253/89.53162416M142.01.51.07/1611.11142014M162.01.51.01/212.7132012M182.52.01.59/1614.29121812M20

4、2.52.01.55/815.86111811M222.52.01.53/419.05101610M243.02.01.57/822.239149M273.02.01.5125.408128M303.53.02.0规格英寸毫米规格英寸毫米No.00000.02100.53341/40.25006.3500No.0000.03400.86365/160.31257.9375No.000.04701.19383/80.37509.5250No.00.06001.52407/160.437511.1125No.10.07301.85421/20.500012.7000No.20.

5、08602.18449/160.562514.2875No.30.09902.51465/80.625015.8750No.40.11202.84483/40.750019.0500No.50.12503.17507/80.87522.2250No.60.13803.505211.000025.4000No.70.15103.83541-1/81.125028.5750No.80.16404.15661-1/41.250031.7500No.90.17704.49581-3/81.375034.9250No.100.19004.82601-1/21.500038.1000N

6、o.120.21605.48641-5/81.625041.2750No.140.24206.14681-3/41.750044.4500No.160.26806.80721-7/81.875047.6250No.180.29407.467622.000050.8000No.200.32008.1280   No.240.37209.4488   公称直径与螺距系列表GB193-63公称直径d(毫米)螺距l(毫米) 公称直径d(毫米)螺距l(毫米)第一系列第二系列第三系列粗牙细牙第一系列第二系列第三系列粗牙细牙  (28)  21.51 1  0.250.2    30  

7、3.5(3)21.510.75   1.10.250.2      (32)  21.5   1.2  0.250.2     33 3.5(3)21.510.75  1.4 0.30.2      35   (1.5)   1.6  0.350.2    36  4321.51   1.8 0.350.2      (38)   1.5   2  0.40.25     39 4321.51   2.2 0.450.25      40 (3)(2)1.5   2.5  0.450.35    42  4.5(4