Overview
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.
Strength class ISO 4161
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.
Materials for the manufacture of ISO 4161 spur nuts
ISO 4161 is manufactured in the following materials:
- Steel, which can be optionally coated with hot-dip galvanized, ordinary galvanized, yellow galvanized and zinc plated
- Stainless steel (A2, A4) does not need to be coated
Areas of application of the ISO 4161 nut
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:
- Galvanized steel offers good corrosion protection if the fastener is to be used in aggressive environments.
- Stainless steel allows the fasteners to be used at high temperature extremes and in aggressive and humid environments.
