Ключевые слова:
Bolts|Nuts|Proof loading|Elongation|Construction systems parts|Threaded fasteners|Testing conditions|Dimensions|Design|Marking|Loading|Thread pitch|Friction-grip bolts|Test specimens|Sampling methods|Steels|High-tensile steels|Chamfered|Mechanical testing|Hexagonal-head fasteners|Hardness|Threaded components|Chemical composition|SI system (metric)|Washers|Threads