標準號：BS 3643-2-2007
中文標準名稱：ISO 米制螺紋.尺寸*值選用規范
英文標準名稱：ISO metric screw threads Part 2: Specification for selected limits of size
標準類型：J05
發布日期：2007/11/30 12:00:00
實施日期：2007/11/30 12:00:00
中國標準分類號：J05
國際標準分類號：21.040.10
引用標準：BS 3643-1-2007
適用范圍：This part of this BS 3643 specifies the fundamental deviations,tolerances and limits of size for the tolerance classes 4H, 5H, 6H and7H for internal threads and 4h, 6g and 8g for external threads whereappropriate for:? a coarse pitch series with the range 1 mm to 68 mm diameter;? a fine pitch series with the range 1 mm to 33 mm diameter;? a constant pitch series with the range 8 mm to 300 mm diameter.For certain diameter/pitch combinations, the fundamental deviations,tolerances and limits of size for tolerance class 4H for internal threadsand tolerance classes 6h and 4g for external threads, primarily foraerospace use, are specified in Annex A.