Ключевые слова:
Internal-thread fasteners, Nuts, Diameter, Threads, Steels, Unalloyed steels, Low-alloy steels, Proof loading, Designations, Proof stress, Chemical composition, Hardness, Grades (quality), Marking, Fasteners, Threaded fasteners, Mechanical testing, Testing conditions, Thread pitch, Bolted joints, Screwed joints, Tensile strength