The nut is an integral part of the fasteners. With the help of a thread cut inside its hole, the nut is screwed onto a screw or bolt. bolt.
LLC "CHZM" is engaged in the production of nuts of the following types:
- stainless, resistant to corrosion and the effects of external aggressive media. Suitable for assembling equipment operated outdoors;
- heat-resistant, made of alloyed metals, designed for fixing parts of gas turbines and boilers;
- high-strength, оhaving plasticity and viscosity. They are used in conditions of significant mechanical load and vibration.
In addition, there are black (steel) nuts and galvanized nuts: the materials from which the production of nuts is mastered are processed in a special way, so that the nuts have the necessary properties.
Learn more about some types of nuts
Heat-resistant nuts have a high-strength structure. Due to their high resistance to fracture and creep when exposed to high temperatures, they are suitable for connecting parts of boilers, steam-gas turbines and internal combustion engines. Heat-resistant nuts are manufactured in accordance with GOST 1759-70 from steels of grades 25X, 35X, 40X, 09G2S, 30XMA, 12x18N10T and others. This standard also specifies the requirements for nuts regarding their appearance, dimensions, mechanical properties and marking. In addition, heat-resistant nuts are manufactured with additional requirements for temperature resistance according to GOST 9064-75 (for operation at temperatures from 0 to 650 ° C for flange connections) and according to GOST 10495-80 (for operation under high pressure conditions from 10 to 100 MPa).
Nuts of this type must comply with the requirements of GOST R 52645-2006. In the production of high-strength nuts, alloying additives are used, thanks to which the metal acquires anticorrosive properties, becomes elastic, resistant to acidic environments, to mechanical and temperature influences. Such physico-chemical properties of the material allow the use of high-strength nuts for connecting parts used in the chemical industry, as well as designed for a long service life.
GOST standards for nuts: 5915-70, 5916-70, 5929-70, 9064-75, 10605-94*
Steel is used in the production of nuts: 3, 10, 20, 35, 45, 40X, 20X13, 09G2S, 14X17N2, 12X18N10T, 12X15G9ND
The nuts have a strength class of 4, 5, 6, 8, 10
Diameters M10, M12, M16, M18, M20, M22, M24, M27, M30, M33, M36, M42, M48, M56, M64, M72, M110
The cost depends on the order volume
* - Production of nuts is possible according to other GOST standards and your drawings
High-strength nuts are always available, nut 5915