标 准 编 号:BS 919-4-2007 简体中文标题:螺纹量规极限和公差规范.第4部分:直径 1/4英寸以上(含 1/4英寸)的统一型螺纹量规的尺寸极限 繁体中文标题:螺纹量规极限和公差规范.第4部分:直径 1/4英寸以上(含 1/4英寸)的统一型螺纹量规的尺寸极限 English Name:Specification for screw gauge limits and tolerances - Limits of size for gauges for screw threads of Unified form diameters 1/4 in and larger