标准摘要
[中文适用范围]： 本文件规定了钢制和不锈钢制、公制粗牙螺纹 M3 至 M20、产品等级 B 的缩径六角头螺栓（杆部直径约等于中径）的特性。 如果在某些情况下需要其他规格，根据要求，性能等级和不锈钢牌号可从 ISO 898-1 或 ISO 3506-1 中选择，尺寸选项可从 ISO 888 或 ISO 4753 中选择。 注：对于全柄六角头螺栓，请参见 ISO 4014。 [外文原描述]： This document specifies the characteristics of hexagon head bolts with reduced shank (shank diameter approximately equal to pitch diameter), in steel and stainless steel, with metric coarse pitch threads M3 to M20, and with product grade B. If in certain cases other specifications are requested, property classes and stainless steel grades can be selected from ISO 898-1 or ISO 3506-1, and dimensional options from ISO 888 or ISO 4753. NOTE For hexagon head bolts with full shank, see ISO 4014.
英文名称Fasteners — Hexagon head bolts with reduced shank (shank diameter ≈ pitch diameter) — Product grade B