标准摘要
[中文适用范围]： 本文件规定了钢制热处理自攻螺钉的机械和物理性能，螺纹尺寸为 ST2,2 至 ST9,5，符合 ISO 1478，在 10 °C 至 35 °C 的环境温度范围内进行测试，并且相关测试方法。 自攻螺钉设计用于在金属板上形成配合螺纹，而其自身的螺纹不会变形。 自攻螺钉在设计上并未预紧，尽管它们在安装后可能会承受不同程度的低水平拉伸应力。 [外文原描述]： This document specifies the mechanical and physical properties of heat treated tapping screws made of steel, with thread sizes ST2,2 to ST9,5 in accordance with ISO 1478 , when tested at the ambient temperature range of 10 °C to 35 °C, and the related test methods. Tapping screws are designed to form mating threads in sheet metals, without their own threads being deformed. Tapping screws are not intended to be pretensioned by design, even though they can experience varying degrees of low-level tensile stress after installation.
英文名称Fasteners — Heat treated tapping screws — Mechanical and physical properties