GOST 7802-81 Bolts with an enlarged semicircular head and square head, accuracy class CBolts GOST 7802-81 – bolts with an enlarged semicircular head and square head accuracy class C. Used together with nuts (hex, square). The use of washers of various configurations (grovers, flat, etc.) will help make the connection more reliable.
Description of the product design and its features
square head and cylindrical threaded rod. The requirements for the accuracy class are imposed on the products, the standard is provided by C.
Coating of bolts with zinc, chromium, nickel, cadmium, etc. is carried out in our own galvanic workshop. A multilayer coating is also available, such as copper-nickel (M.N.) or copper-nickel-chromium (M.N.X.6).
GOST 7802-81.pdf< p> An example of a symbol for a bolt with a thread diameter d = 12 mm, with a large thread pitch with a tolerance field of 8 g, 60 mm long, strength class 3.6, with a zinc coating, 6 μm thick, applied by cathodic reduction, chromated: p >
Explanation of the designation: Bolt M12x60.36.016 GOST 7802-81
Fields of product application
These bolts are used when assembling furniture.