Screws play a crucial role in almost every sector owing to its basic yet vital objective that it serves. These are handy helpers within the home workshop. Compared to nails, screws offer a stronger bond and unlike glue it lets the fastened pieces to be easily taken apart.
Measured by both diameter and length, it is best to select screws that are enough long so that two-thirds of its length will lodge inside the base material in which one will fasten it. Every vehicle or equipment largely depends on the screws that clings it together. These accessories can be utilized for holding any type of material except concrete or bricks in which case one may require a specialist to set a cap on the rough screw. In the recent times, the screws are a device that finds its application in varied places particularly in the infrastructure works and manufacturing units. Screws are extensively used for bridges, construction of materials, in aviation sectors, railways and other places. Today a wide gamut of screws is available that differ in material and also in types, dimensions, threads such as antique brass wood screw & metal screw, and above all the reason for which it will be used.
The use and function of screws are not confined to a specific industry but it has expanded its wings. These are widely used in the automobile manufacturing, construction industry, rebuilding sector, pipeline fabrication, home maintenance and repair, heating-ventilation air conditioning applications and so on. Screws are basically of two types namely wood screws and machine screws. Though both are made from metal, the latter comprises of a constant diameter and fixes with nuts while the former is tapered and grasps to the real surface. An assorted variety of screws have been developed for maximizing the efficacy for specific applications. The diverse type of screws is categorized as per the driving methods, type of threads, head shape and the finish and material utilized for making the screw. These days galvanized screws are also available to prevent rusting. These are specially designed for areas that will have an exposure to various elements. Not only this, screws these days are also available in an endless variety of lengths and diameters.
Types of screws
Although screws are available in various forms, three of the most common ones include;
- Round Head Screw- this type of screw is used to fix material pieces together where there is no use of countersunk holes. Such screws look decorative especially if made of brass.
- Pozidriv head- these are used with the help of specially designed screw drivers that will not slip if pressure is applied. Pozidriv head is ideal especially when screws are used on confined spaces and corners.
- Countersunk-slot head- such screws can be utilized for general woodworking such as fitting hinges to a door. As this is countersunk in nature, this can be constricted flush to surfaces of materials.
A screw is regarded as an essential mechanical device that is very frequently used in one’s daily life. Modern screws are undergoing several changes and are evolving continuously. Owing to its principle of physics, screws have become a requisite part of modern day mechanics. The development and industrial sectors have a complete bunch of a wide array of screws to select from, with each type fitted for a particular usage. Different screws are available for cement, mortar, steel, drywall and timber and each range are designed in a unique way for meeting its objective. Further, the thread type they have got, the screws are also available in varied types of tops such as conical, cheese head or dome top or without tops and with different films namely galvanic, zinc oxide and stainless steel.