本文件规定了具有公制细牙螺纹M8×1至M64×4，产品等级为A和B的钢制和不锈钢六角头螺钉的特性。 如果在某些情况下需要其他规范，可从ISO 898-1或ISO 3506-1中选择性能等级和不锈钢等级，并从ISO 888或ISO 4753中选择尺寸选项。

This document specifies the characteristics of hexagon head screws, in steel and stainless steel, with metric fine pitch threads M8×1 to M64×4, and with product grades A and 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.