锥管螺纹计算公式18-28牙锥管螺纹的计算公式
锥管螺纹计算公式
18-28牙锥管螺纹的计算公式
![](/static/mobile/images/message.png)
![](/static/mobile/images/time.png)
锥管螺纹计算公式18-28牙锥管螺纹的计算公式
锥管螺纹计算公式
18-28牙锥管螺纹的计算公式
锥管螺纹的尺寸是通过表查的,无需公式计算.看看这个吧
°圆锥管螺纹(BSPT)
螺纹代号
基本尺寸
英寸大径
mm
d=D螺距
mm
p每英寸牙数
tpi中径
mm
d2=D2小径
外螺纹
d3牙型高度
H1圆弧尺寸
r底孔尺寸
mm
R1/161/16"7.7230.907287.1426.5610.5810.1256.4
R1/81/8"9.7280.907289.1478.5660.5810.1258.4
R1/41/4"13.1571.3371912.30111.4450.8560.18411.2
R3/83/8"16.6621.3371915.80614.9500.8560.18414.75
R1/21/2"20.9551.8141419.79318.6311.1620.24918.25
R3/43/4"26.4411.8141425.27924.1171.1620.24923.75
R11"33.2492.3091131.7730.2911.4790.31730
R11/411/4"41.9102.3091140.43138.9521.4790.31738.5
R11/211/2"47.8032.3091146.32444.8451.4790.31744.5
R22"59.6142.3091158.13556.6561.4790.31756
R21/221/2"75.1842.3091173.70572.2261.4790.31771
R33"87.8842.3091186.40584.9261.4790.31785.5
R44"113.0302.30911111.551110.0721.4790.317110.5
R55"138.4302.30911136.951135.4721.4790.317136
R66"163.8302.30911162.351160.8721.4790.317161.5