Ключевые слова:
Alloy steels, Hardness testing, Test specimens, Decarburization, Thread pitch, Fasteners, Yield stress, Dimensions, Steels, Physical properties of materials, Screws (bolts), Tensile strength, Specimen preparation, Hardness, Bolts, Testing conditions, Unalloyed steels, Approval testing, Dimensional changes, Surface properties, External-thread fasteners, Compositional tolerances, Elongation at fracture, Tempering, Angles (geometry), Designations, Impact testing, Symbols, Mechanical testing, Chemical composition, Test equipment, Mechanical properties of materials, Studs (fasteners), Proof loading, Temperature, Marking, Tensile testing