Globalfastenermarket. Com Introduces The Details of Screws

Most screws have slot heads and are driven with slotted, or standard, screwdrivers. Phillips-head screws have crossed slots and are driven with Phillips screwdrivers. Screws are measured in both length and diameter at the shank, which is designated by gauge number from 0 to 24. Length is measured in inches. The length of a screw is important because at least half the length of the screw should extend into the base material. Tip: To prevent screws from splitting the material, pilot holes must be made with a drill before the screws are driven. Screws provide more strength and holding power than nails. Additionally, if something needs to be disassembled, screws can easily be removed. Like nails, screws are available with different coatings to deter rust. They are manufactured with four basic heads and different kinds of slots. Flathead screws are almost always countersunk into the material being fastened so the head of the screw is flush with (or lower than) the surface. Oval-head screws are partially countersunk, with about half the screw head above the surface. Roundhead screws are not countersunk; The entire screw head lies above the surface. Fillister-head screws are raised above the surface on a flat base to keep the screwdriver from damaging the surface as the screw is tightened. The corrugated fastener is one of the many means by which joints and splices are fastened in small timber and boards. It is used particularly in the miter joint. Corrugated fasteners are made of 18-to 22-gauge sheet metal with alternate ridges and grooves. The ridges vary from 3/16 to 5/16 inch, center to center. One end is cut square, the other end is sharpened with beveled edges. There are two types of corrugated fasteners: One with the ridges running parallel, the other with ridges running at a slight angle to one another, the latter type has a tendency to compress the material since the ridges and grooves are closer at the top than at the bottom. These fasteners are made in several different lengths and widths. The width varies from 5/8 to 1 1/8 inches, and the length varies from 1/4 to 3/4 inch. The fasteners also are made with different numbers of ridges, ranging from three to six ridges per fastener. For most home repair purposes, wood screws will suffice. Sheet metal screws, machine screws, and lag screws also come in various types. If you're trying to replace one of these screws, take an old screw with you to the hardware store. Corrugated fasteners, also called wiggly nails, are used for light-duty joints where strength is not important. The fasteners are set at right angles to the joint. Corrugated fasteners are used in a number of ways—to fasten parallel boards together, as in fastening tabletops, to make any type of joint, and as a substitute for nails where nails may split the timber. In small timber, corrugated fasteners have greater holding power than nails. Source: Globalfastenermarket. Com