本文件规定了由耐腐蚀不锈钢（即马氏体不锈钢和沉淀硬化奥氏体不锈钢）和镍合金制成的粗螺距螺纹和细螺距螺纹螺栓、螺钉、螺柱和螺母的机械和物理性能？°C。 根据条款进行测试？9在环境温度范围10？℃至35℃？℃，其他试验可在更高温度下进行，见条款？10. 笔记？本文件中规定的紧固件也适用于在低温下使用，通常低至-50？°C。有关更多信息，请参见ISO 3506-6。 当螺栓、螺钉、螺柱和螺母一起考虑时，在本文中使用术语“紧固件”。 ISO 3506-6提供了关于合适的不锈钢和镍合金及其性能的一般规则和附加技术信息。本文件适用于紧固件: —？采用符合ISO 68-1的ISO公制螺纹， —？具有符合ISO 261和ISO 262的直径/节距组合， —？粗螺距螺纹M3~M39，细螺距螺纹M8 × 1~M39 × 3， —？螺纹公差符合ISO 965-1和ISO 965-2，以及 —？任何形状，但具有完全装载能力。 不锈钢和镍合金紧固件符号可用于本文件直径限制之外的尺寸（即，螺栓、螺钉和螺柱，D？<？3？mm还是D？>？39？mm和D？<？5？mm还是D？>？39？mm），前提是满足所有适用的化学、机械和物理要求。 本文件不涉及承载能力降低的紧固件（即薄螺母和螺栓、头部或非螺纹柄弱于螺纹柄的螺钉和螺柱）。本文档未规定功能特性的要求，例如: —？扭矩/夹紧力特性， —？剪切强度， —？抗疲劳性、 —？焊接性， 或 —？螺栓连接和紧固件在高温环境下的性能（见条款？10中紧固件的高温试验方法）。

This document specifies the mechanical and physical properties of bolts, screws, studs and nuts, with coarse pitch thread and fine pitch thread, made of corrosion-resistant stainless steels (i.e. martensitic stainless steels and precipitation hardening austenitic stainless steels) and nickel alloys, intended for use at high temperatures up to 800？°C. Tests in accordance with Clause？9 are performed at the ambient temperature range of 10？°C to 35？°C, and other tests can be performed at higher temperatures, see Clause？10. NOTE？Fasteners specified in this document are also suitable when used at low temperatures, typically down to -50？°C. For more information, see ISO 3506-6. The term “fasteners” is used in this document when bolts, screws, studs and nuts are considered all together. ISO 3506-6 provides general rules and additional technical information on suitable stainless steels and nickel alloys as well as their properties. This document applies to fasteners: —？with ISO metric thread in accordance with ISO 68-1, —？with diameter/pitch combinations in accordance with ISO 261 and ISO 262, —？with coarse pitch thread M3 to M39, and fine pitch thread M8×1 to M39×3, —？with thread tolerances in accordance with ISO 965-1 and ISO 965-2, and —？of any shape but with full loadability. Stainless steel and nickel alloy fastener symbols can be used for sizes outside the diameter limits of this document (i.e. for bolts, screws and studs with d？<？3？mm or d？>？39？mm and for nuts with D？<？5？mm or D？>？39？mm), provided that all applicable chemical, mechanical and physical requirements are met. Fasteners with reduced loadability (i.e. thin nuts and bolts, screws and studs with head or unthreaded shank weaker than the threaded shank) are not dealt with in this document. This document does not specify requirements for functional properties such as: —？torque/clamp force properties, —？shear strength, —？fatigue resistance, —？weldability, or —？properties of bolted joints and fasteners in high temperature environment (see test methods at high temperature for fasteners in Clause？10).