標準號：BS 4320-1968
中文標準名稱：普通工程用金屬墊圈規范.米制系列
英文標準名稱：Specification for metal washers for general engineering purposes - Metric series
標準類型：J13
發布日期：1968/5/23 12:00:00
實施日期：1968/5/23 12:00:00
中國標準分類號：J13
國際標準分類號：21.060.30
適用范圍：Relates to bright metal and black metal washers for use with ISO metric bolts, screws and nuts. The washers are basically divided into 3 categories of size: 'normal', 'large' and 'extra large' diameter series and the bright washers are further divided by including a 'light range' which have thicknesses approximately 60 per cent of the 'normal range' thicknesses. The bright metal washers cover the range for bolts, M1 to M39, and the black metal washers cover the range M5 to M68. Appendix gives details of sizes greater than 68 mm diameter, up to and including size M150.