Today on the hardware market you can find unusual products., characterized by unique properties and qualities. Among other things, self-locking and flanged bolts, the upper part of the head of which is distinguished by an unusual shape, and the lower part has a kind of extension, which eliminates the need to use a washer in a threaded connection.
Self-locking bolt design features a serrated edge, located on the inner surface of the disk expansion, which allows you to use this feature as a grower.
Threaded extrusion screws intended for installation in prepared holes with a smooth surface or for screwing into flanged holes. As a result of the installation, thread rolling occurs with further locking of hardware.
The use of carbide materials for the production of screws, designed for installation in drywall, allowed to create products with a unique thread design, which are used to connect hardwood parts without pre-preparation of mounting holes. This allowed to increase labor productivity and reduce the assembly time of products..
Hardware with anti-corrosion coating is used for installation and further operation in aggressive environments. Anti-corrosion protection of fasteners is performed by hot-dip galvanizing, which requires significant investments in the neutralization of waste from galvanic processes. In addition, the centrifugation method is used to remove excess zinc melt from the thread surface., internal threads of nuts are cleaned mechanically. Thermal diffusion galvanizing made it possible to reduce the cost of cleaning the thread surface due to the method of abrasive blasting.
A layer of zinc is applied to the surface when it is heated and then held at high temperatures.. Zinc is a dry powder mixture, which components are activating additives and diluents. The mixture is inside a sealed centrifuge. As a result of the interaction of zinc and steel, the mutual penetration of metals occurs, connection is formed on the surface of the product, characterized by high strength properties, wear resistance and heat resistance. The resulting protective layer has a uniform thickness regardless of the type of thread - internal or external. In addition, the period of operation increases tenfold.
