°锥管螺纹参数

1、5.3.255 圆锥管螺纹（节选自 GB/T7307-2001） 55圆锥管螺纹的牙型与结构55圆锥管螺纹的基本牙型与结构大致与60圆锥管螺纹相似，只是其牙型角为为 55。D2=d2=d-0.640327P;D1=d1=d-1.280654P55圆锥管螺纹的基本牙型圆锥管螺纹的基本尺寸尺寸 代 号每25.4mm内 的 牙 数n螺距P/mm牙高H/mm圆 弧 半 径R/mm基面上的直径有 效 螺 纹 长 度/mm基准长度圆锥内螺 纹基面轴 向位移的 极限偏差T%装配余量有效螺纹长度大 径 d=D/mm中 径d2=D2/mm小径d1 =D1/mm基本/mm极限偏差T%最大/mm最小/mm/mm圈

2、数基本/mm最大/mm最小/mm/mm圈 数/mm圈 数1/16280.9070.5810.1257.7237.1426.5616.54.00.914.93.11.112.526.57.45.61/8280.9070.5810.1259.7289.1478.5666.54.00.914.93.11.112.52346.57.45.61.30.80.113.12.11.1211.1/4193776841573014459.76.01.317.34.71.73.7天9.708.41.30.80.116.15.14.10.1210.11.3/81937568466280395016.41.317.7

3、5.11.7尤3.7天148.81.81.10.220.19.18.13.10.1213.15.11.1/21414624995579363128.21.8106.42.3打5.0第2041.81.10.226.25.24.14.11.1214.16.12.3/41414624944127911759.51.8137.72.3人5.0第5372.31.40.333.31.30.16.10.12.1216.19.14.111097917249779291842.3178.12.9打6.48151112.31.40.341.40.38.19.12.2.3115.10.2.916.4219.21.1

4、6.%09791791043195217041481112.31.40.347.46.44.19.12.2.31115.10.2.916.42天19.21.16.%0979178033248451704打1482.31.40.359.58.56.23.15.18.13.1323.25.21.211097917614135656492.31262.9打7.5上4712112.31.40.375.73.72.26.17.3.5121.14.3.519.2426.30.23.%09791718470522675%00為7222.31.40.387.86.84.29.20.124.17.129.33.

5、26.311097917884405926863.5z113.5%9.2483310032.31.40.398.97.31.22.125.18.129.33.26.%11.333.53.59.2409791708513724212778334112.31.40.311311111035.25.3.5128.21.3.5110.435.39.32.097917.030.551.07284%99為48331361352.31.40.313840.28.132.25.111.40.43.36.511.95.473.53.55097917.431612115166121631621602.31.40.340.28.132.25.111.40.43.36.611.83.35.873.53.5509791716115166012注：1.本表使用与圆锥外螺纹与圆锥内螺纹和圆柱内螺纹两种连接方式2