ISO 898-5:2012
碳钢和铸钢制造的紧固件机械性能.第5部分:带特定硬度等级的固定螺钉及类似的螺纹紧固件.粗牙螺纹和细牙螺纹
Mechanical properties of fasteners made of carbon steel and alloy steel - Part 5: Set screws and similar threaded fasteners with specified hardness classes - Coarse thread and fine pitch thread