The cap nut in accordance with GOST 11860-85 is used as a decorative element, which is a closed part of the fastener. At the same time, it additionally protects the thread from mechanical damage and corrosion, prevents injuries in contact with the fastener, and gives the product an aesthetic appearance.
Strength class GOST 11860-85
Nuts of GOST 11860-85 are made of steel of strength classes 5 and 6.
Fastening group of GOST 11860-85
These nuts are mostly made of stainless steel and belong to the stainless fastener group.
Materials of manufacture
GOST 11860-85 is made of various materials:
- Steel
- Polyamide
- Chrome
- Stainless steel A1, A2, A4
Scope of application of the cap nut GOST 11860-85
Most often, this fastener is used for the aesthetic appearance of the structure. They are widely used in mechanical engineering and instrumentation.
The scope of application also directly depends on the material of manufacture and coating of the product:
- The zinc coating on steel protects against corrosion if the fastener is to be used in aggressive environments.
- Brass nuts are used if the system is subjected to frequent dynamic, vibration, and cyclic loads.
- The polyamide bolt withstands mechanical shocks, does not crack or break at the permissible load factor.
- Stainless steel allows the use of nuts at significant temperature changes and in aggressive and humid environments.
