螺纹规格,国家标准普通螺纹螺距是多少？

螺纹规格牙距螺纹底孔直径M2标准0.401.60细牙0.251.75M2.5标准0.452.10细牙0.352.20M2.6标准0.452.20细牙0.352.25M3标准0.502.60细牙0.352.70M3.5标准0.603.00细牙0.353.20M4标准0.703.40细牙0.503.60M5标准0.804.20细牙0.504.60M6标准1.005.10细牙0.755.30M8标准1.256.80细牙11.007.10细牙20.757.30M10标准1.508.60细牙11.258.90细牙21.009.10细牙30.759.30M12标准1.7510.40细牙11.5010.60细牙21.2510.90细牙31.0011.10M14标准2.0012.20细牙11.5012.60细牙21.0013.10M16标准2.0014.20细牙11.5014.60细牙21.0015.10M18标准2.5015.70细牙12.0016.20细牙21.5016.60细牙31.0017.10

公制自攻螺丝规格表

ST ST ST ST ST ST ST ST ST ST ST ST ST ST

1.5 1.9 2.2 2.6 2.9 3.3 3.5 3.9 4.2 4.8 5.5 6.3 8.0 9.3

____________________________________________________________________________

0.5 0.6 0.8 0.9 1.1 1.3 1.3 1.3 1.4 1.6 1.8 1.8 2.1 2.1

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55°圆锥管螺纹(BSPT)

基本尺寸

螺纹代

号

英

寸

大径螺距每英寸牙

mm

mm数

d=Dp

tpi

R1/161/16″7.7230.90728

R1/81/8″9.7280.90728

R1/41/4″13.1571.33719

R3/83/8″16.6621.33719

R1/21/2″20.9551.81414

R3/43/4″26.4411.81414

R1

1″33.2492.30911

R11/411/4″41.9102.30911

R11/211/2″47.8032.30911

R2

2″59.6142.30911

R21/221/2″75.1842.30911

R3

3″87.8842.30911

R4

4″113.0302.30911

R5

5″138.4302.30911

R6

6″163.8302.30911

中径

mm

d2=D27.1429.14712.30115.80619.79325.27931.7740.43146.32458.13573.70586.405111.551136.951162.351

小径

外螺纹

d36.5618.56611.44514.95018.63124.11730.29138.95244.84556.65672.22684.926110.072135.472160.872

牙型高度

H1

0.5810.5810.8560.8561.1621.1621.4791.4791.4791.4791.4791.4791.4791.4791.479

圆弧尺寸

r

0.1250.1250.1840.1840.2490.2490.3170.3170.3170.3170.3170.3170.3170.3170.317

底孔尺寸

mm

6.48.411.214.7518.2523.753038.544.5567185.5110.5136161.5

55°圆柱管螺纹的型式和尺寸

BritishPipeThread(惠氏管螺纹)–圆柱(BSPP/BSPF)

大径螺距每英寸牙中径小径牙型高底孔尺

螺纹代基本尺mmmm

数

mm外螺

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