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What is GOST 15526-70? GOST 15526-70 (ISO 4032) is the most common hexagonal nut. This nut is used to create high-strength detachable joints of metal parts and is used in conjunction with bolts and screws. The nut of GOST 15526-70 has six faces with a thread (metric or inch) on the inside. To fasten GOST 15526-70 nuts, wrenches of the appropriate size are used.
Strength class of GOST 15526-70
Nuts of GOST 15526-70 are manufactured in strength classes 5, 6, 8, 10, 12. A strength class is a 100-fold reduction in the minimum tensile strength of a bolt, which can be paired with a metal product to withstand normal loads. That is, even the minimum value of the strength class of a GOST 15526-70 nut can withstand more than 500 MPa.
Fastening group of GOST 15526-70
Depending on the material of manufacture, nuts of GOST 15526-70 are divided into:
- High strength fasteners
- Stainless steel fasteners
- Polyamide fasteners
- Brass fasteners
- Copper fasteners
- Aluminum fasteners
Materials for the manufacture of nuts GOST 15526-70
The nut of GOST 15526-70 is widely used in construction equipment: bulldozers, cranes, excavators; power and industrial units: turbines, pumps, electric generators, metalworking machines; freight transport and agricultural machinery: trailers, semi-trailers, tractors, tractors.
Nuts of GOST 15526-70 are used in conjunction with bolts or screws to create a reliable threaded connection.
The scope of application also directly depends on the material of the nut:
- Galvanized steel provides good corrosion protection if the fastener is to be used in an aggressive environment.
- Brass is used if the system is subjected to frequent dynamic, vibration loads.
- Stainless steel allows the fasteners to be used at significant temperature changes and in aggressive and humid environments.
- Polyamide withstands mechanical shocks, does not crack or break at the permissible load factor.
- Copper is resistant to corrosion in dry air, fresh and salt water, alkaline solutions, organic acids, alcohols, and phenolic resins.
- Aluminum, due to the deformation of mild steel, seals the joint well.
