紧固件螺纹直径及螺距对照表字号

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1、紧固件螺纹直径与螺距对照表字号：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68101216202530354045

2、50(55)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≤125     b=2d+6②1>125—200 b=2d+2③1>20

3、0      b=2d+5公、英制对照表、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M30.50.35 4#2.94048 M40.70.5 6#3.53240 M50.80.5 8#4.23236 M61.00.75 10#4.82432 M71.00.75 12#5.52428 M81.251.00.751/46.35202820M101.51.251.05/167.94182418M121.751.51.253/89.53162416M142.01.51.07/1611.11142014M162.01.51.01/21

4、2.7132012M182.52.01.59/1614.29121812M202.52.01.55/815.86111811M222.52.01.53/419.05101610M243.02.01.57/822.239149M273.02.01.5125.408128M303.53.02.0      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.00.06001.52407/160.437

5、511.1125No.10.07301.85421/20.500012.7000No.20.08602.18449/160.562514.2875No.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.

6、375034.9250No.100.19004.82601-1/21.500038.1000No.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

7、   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  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