GOST 7801-81 Bolts with an enlarged semicircular head and a whisker of accuracy class CBolts GOST 7801-81 – bolts with an enlarged semicircular head and a whisker of an accuracy class C. Used in conjunction 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
a mustache of the soles and a 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 7801-81.pdf< p> An example of a symbol for a bolt with a thread diameter of 12 mm, with a coarse thread with a tolerance range of 8g, 60 mm long, strength class 3.6, zinc-plated, 6 μm thick, cathodic reduction, chromated:
Explanation of designation: Bolt M12x60.36.016 GOST 7801-81
Applications of the product
These bolts are used when assembling furniture.