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Експертний відеоблог
ISO 4161 has a regular hexagonal shape with a threaded connection in the center; the nut has special notches on the outside that cut into the metal when tightened.
The strength class of an ISO 4161 nut is the maximum applied force that causes the nut to fracture. ISO 4161 nuts are manufactured in strength classes from 6 to 12. From strength class 8, the nut is considered high-strength.
ISO 4161 is manufactured in the following materials:
ISO 4161 is used in industrial construction, machine tool and instrumentation, etc.
In addition, the scope of application directly depends on the material of manufacture and the coating of the product: