Anchor bolts are an important element of construction

Anchor bolts are sturdy fasteners, fixed in supporting bases and retaining any structures. They got their name from the German word "anker", which means "anchor". This name is not at all random, since it is difficult to find other fasteners that are not inferior to anchor bolts in strength and reliability. How to understand all the variety of these metal products?

Anchor bolts can be divided into 2 large groups: foundation bolts and Molly bolts. The first include fasteners in the form of a rod with a thread on one end and a special device that holds it inside the base. These anchor bolts are designed for fixing equipment and various structures. They are used for any construction (buildings, structures, dams, power stations, bridges, etc.). The foundation bolts guarantee reliable attachment to strong and inelastic substrates. They are marked on the end part of the studs with the nominal thread diameter of the anchor and the length of the hairpin (in cm). The studs of bolts intended for operation at temperatures below -40 ° C are additionally labeled "CL".

The Molly anchor bolts are designed for use in hollow structures with a minimum bearing capacity. They are used when working with plasterboard, fiberboard, gypsum fiber sheets, hollow bricks and hollow blocks. These bolts are equipped with a special "collet", which opens when the bolt is tightened. It densely rests on the base on its inside. On the outside of the collet there is a stubborn "skirt" with thorns that go away when tightened into the base material. These devices protect the collet from turning. Some Molly Collet varieties are supplied separately from this fastener.

Depending on the application, the anchors are of different shapes and sizes. They are used for fixing door blocks, installing lighting fixtures, window frames, suspended ceilings, etc. These fasteners are manufactured using modern technologies from high-quality materials. People who are far from building do not know how to fix anchor bolts. And this is done quite simply: they are hammered into the prepared holes and then tightened with a wrench. In the process of tightening the screw, they are firmly fixed in the material. Anchor bolt is securely held in the base thanks to 3 working principles: friction, stop, gluing (embedding). Most fasteners are held in the material of the base due to a combination of all these principles. Steel anchor bolts can have a diameter of 12-100 mm, although in some types of construction fasteners and larger diameter are used. Destroy these fasteners in the weakest of their places. They are characterized by the following types of destruction: tearing out of the base, fracture or bending, shearing, tearing off the base material, melting, corrosion of the metal.

In a huge assortment of anchor bolts, HILTI fasteners occupy one of the first places in popularity. They are used in construction and repair work. This company produces various types of fasteners, among which the most popular mechanical and chemical anchor bolts Hilti. They are reliable and are characterized by a simple fixing method. The assortment of these products is simply huge, but most of the products refer to anchor chocks of various shapes and sizes.