標準號：ISO 691-2005
中文標準名稱：螺釘和螺母用裝配工具.扳手和套筒扳手的開口.常用公差
英文標準名稱：Assembly tools for screws and nuts - Wrench and socket openings - Tolerances for general use
標準類型：J47
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：J47
國際標準分類號：25.140.30
適用范圍：This International Standard specifies tolerances on wrench and socket openings for screws and nuts (or similar parts) having metric width across flats dimensions, as shown diagrammatically below.It gives, for each dimension, the tolerances for general use, defined by its two deviations, minimum and maximum, with respect to the nominal value.These deviations have been determined in relation to the width across flats tolerances for screws and nuts specified in ISO 4759-1 and with regard to the manufacture of tightening tools.