Types of fasteners

Fasteners ispolzuyutsya during construction, finishing and repair work. There are many elements of the fixture, which, depending on their design features and used for the manufacture of materials can be used for solving various problems. Most important - make the right choice in favor of one species of fasteners. This will ensure a reliable and long-term operation of all compounds in the space of the dwelling, and, importantly, will give them a proper (from an aesthetic point of view) appearance. Fasteners and formed with them the connection can: differ by the presence or absence of thread (which in turn can be either metric or inch, have a variety of forms) to be detachable, or one-piece, to form a unified system of classification is very difficult, because the same fasteners can be used in different ways, but similar in design but different material for manufacture of the product will treat the different classes of hardware. Types of fasteners Nail This class of fasteners do not require detailed description, as is familiar to everyone. This bolt fasteners in the form of a rod with a male thread at one end and with a head on another. The compound is formed by means of a nut. Bolt can be threaded around the rod (full thread) or tail (incomplete thread). Typically, the bolt has a hexagonal head, at least under the hexagon key. There are bolts with T-shaped, semicircular and flat head, and folding, kostylkovye and anchor. It is a screw fasteners to form a compound or fixation. It is made in the form of a rod with a male thread at one end and structural elements to transfer torque to the other. The screw can be equipped with hex bolts. The screw head is cylindrical in shape, cylindrical, rounded, semi-circular, flat, Oval or lenticular. There are self-tapping screws (with a sharp or flat end), which operates in the process of screwing up the threads in the connected materials. Allen screw turnkey irreplaceable when you need to make a mount in the recess of cylindrical shape. Screw connections are used in the presence of internal threads in the joined materials without the use of nuts and do not purport to frequent assembly and disassembly. From an aesthetic point of view (especially when using components with flat head), they compare favorably with those of bolted connections. This screw fasteners in the form of a rod with a special outer thread threaded conical tip and a bolt on the other end, forming a thread in the opening connectable wooden or plastic products. In this special thread has a pointed triangular profile and a greater width of depression compared with the width of the tooth. Screw - the most frequently used in the construction and finishing work of the class fasteners. Indispensable when installing drywall sheets to the metal (with frequent tapping screw) or wood (tapping with a rare thread) frame. Different types of screws used in the performance of roofing, facade works, when you connect the metal sheets. Roofing screw has a hexagonal head and is equipped with an ordinary washer and sealing washer from the ageless weatherproof rubber. Nut Fasteners with a threaded hole and a building block for transmission of torque. Used in the hairpin and bolted joints, often in conjunction with the puck. In addition to the ordinary use several specific types of nuts. 1. Cap nut (item spherical and flat end surfaces and a hollow threaded hole) is used as decorative. 2. Butterfly nut has a flat protruding elements for transmission of torque and is tightened by hand. 3. Self-locking nut has a nylon liner, which protects against inadvertent loosening. Such detail is applied at elevated vibronagruzkah. In addition, we should mention the nut with flange, crown, elongated, slotted and welded nuts. This washer fasteners with a hole is enclosed under a nut or bolt head or screw to increase the bearing surface and (or) prevent them from self-unscrewing. Rivet Fasteners in the form of a smooth cylindrical rod with a head on one end. It is used to obtain permanent connection through the formation of the head at the other end of the rod of plastic deformation. Currently, work with drywall or sheet metal rivets used traction. Typically, the leg pulling rivets made of steel. Established with the help of a special apparatus. Anchors and anchor basic principle underpinning the work of anchors and dowels can be demonstrated by a simple example. In a concrete wall drill a hole in it placed a wooden tube, which hammered the nail. Namely the need to be securely attached to the solid foundations caused the appearance of anchors and dowels. Anchor (dowel) fastener consists of two elements. Firstly, this sleeve, which is installed in a pre-drilled hole. Between the liner and base material, a friction force. This is due to mechanical expansion of the liner in the hole - that can be achieved in different ways. In the liner is inserted into fastener-bolt, screw, stud, screw, special nails. Anchors are designed for the perception of high stress and therefore are made of metal. Dowels are designed for smaller loads and are made of plastic (nylon, polyethylene). From the practical application of the anchors should mention the installation of door frames, special anchors used to install windows packages.