GOST 5915 nuts with thermodiffusion zinc coating up to 50 microns
Purpose
Characteristics
Specifications
Characteristics:
1. Coating of various thicknesses from 6 to 50 microns at the request of the consumer (1-5 coating classes in accordance with GOST R 9.316.2006)
2. Preservation of thread tolerances 6N for nuts after galvanizing
3. Preservation of mechanical properties after galvanizing in strict accordance with GOST R 52628. Conducting a complete list of tests according to GOST R 52628 both before and after thermal diffusion galvanizing.
4. A significant increase in the corrosion resistance of fasteners by 5 times compared with galvanic galvanizing and 1.5 times compared with hot-dip galvanized fasteners with the same thickness of the protective coating. The value of the corrosion resistance index is not less than the standard one (96-250 h, depending on the coating class in the salt mist chamber)
The use of fasteners with thermodiffusion zinc coating is a modern high-tech solution to the problem of protecting the fastener from corrosion during operation
|
Coating class (thickness) |
Thread diameter, mm |
Accuracy class |
Strength class |
Steel grade |
|
1,2 (6-15 microns) |
М6-М10 |
В |
5, 8, 10 |
20, 20G2P |
|
1-5 (6-50 microns) |
М12-М30 |
А, В |
5, 8, 10 |
20, 20G2P |
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