ANSI/ASME B18.3.5M-1986 米制系列六角扁平沉头螺钉

标准号：ANSI/ASME B18.3.5M-1986
中文标准名称：米制系列六角扁平沉头螺钉
英文标准名称：Hexagon Socket Flat Countersunk Head Cap Screws (Metric Series)
标准类型：J13
发布日期：1986/1/1 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：J13
国际标准分类号：21.060.10
适用范围：Contains complete general and dimensional requirements for Metric Series Hexagon Socket Flat Countersunk Head Cap Screws of nominal sizes from 3mm to 20mm recognized as American National Standard. Also included are appendices covering formulas for dimensions, part numbering system and preferred sizes for government use, and thread dimensions. This product is designed and recommended for applications where a flush seating socket head screw is desired. Wrenchability is limited by the socket size and key engagement. Because of the head configuration, this product is not recommended where maximum fatigue resistance is required.