螺纹塞规代号
表5 常用螺纹的基本尺寸尺寸代号每寸牙数大径中径小径建议底孔基准间隔牙数 1/8 27 10.242 9.4898.736 φ8.6 4.102 4.36 1/4 18 13.616 12.487 11.358 φ11.1 5.786 4.103/8 18 17.055 15.926 14.797 φ14.5 6.096 4.32 1/2 14 21.223 19.77218.321 φ17.9 8.128 4.48 3/4 14 26.568 25.117 23.666 φ23.2 8.6114.75 1 11.5 33.228 31.461 29.694 φ29.2 10.160 4.60 1-1/4 11.541.985 40.218 38.451 φ37.9 10.668 4.83 1-1/2 11.5 48.054 46.28744.520 φ43.9 10.668 4.83
2011/11/3 9:37:18