Construction fasteners are those that are used in the construction business. These fasteners include thousands of variety of screws, nuts, bolts, pins, and hinges. Construction fasteners can be custom made and are also available in the retail as well as wholesale market.

Construction fasteners are used for commercial, residential, and industrial purposes. Every type of construction requires fasteners, from small house to a large factory. Many inventions and innovations have changed the way fasteners are used in the construction business and new types of fasteners such as self drilling screws that are corrosion resistant are used galore in the construction business.

Fasteners are usually selected based on their function and the material that is to be fastened. This means that a fastener required for joining two wooden beams is different from a fastener that is used for fastening steel rods. Other factors that determine the selection of a fastener are – application, body design, diameter of the body of a fastener, thread type, material, and drive types.

It is important that a construction fastener meets the requirements and quality standards laid down by the government. The tensile strength and the shear values should be accurately determined to avoid any breakage or untimely fatigue failure of the machinery or construction in which the fastener is to be used. Fasteners that are used in construction of a scientific or biological laboratory need to fulfill the requirements that are necessary for the safety of the crew that work in the lab.

Fasteners have become an integral part of our lives and are indispensable in almost every industry. Fasteners are used in almost every object that a person sees around him. The indispensability of fasteners is truly realized when we observe that all the machines, factories, vehicles, consumer goods, and human construction around us comprise of fasteners that determine the life and usefulness of the object.

There are many types of wire and cable insulations. Some wire is meant for indoor use, some for outdoor use and even some meant for underground

PVC insulation is the most basic which you’ll find on cheaper indoor wire and cable. Hook up wire has PVC insulation and it’s mostly meant for appliances and other indoor applications. PVC can’t go outdoors or in conduit because it doesn’t have protection against any type of moisture or weather.

Electrical wire has PVC insulation with a nylon coating over it. The nylon repels rain and moisture so that it can’t hit the insulation or the bare copper. So THHN wire can go outdoors and in conduit, but it can’t go directly underground. Romex is a cable that’s made from THHN wires but it still can’t go outdoors or in conduit because of the ground wire in it. There’s a bare copper ground wire without insulation in the cable, but the PVC jacket isn’t strong enough outdoors to protect the ground wire.

If you need an electrical wire outdoors that can do anything then UFB cable is what you’re looking for. It has a tough jacket to protect against anything that could happen outdoors. It’s also known as an underground cable because it’s suited for direct burial in the ground without conduit or tray. UFB cable is made similar to Romex wire because it still has the THHN wires and a ground wire.

Those were mostly the insulation types in the electrical wire field. I’ll get into the portable cord field in a different article. That has to do with the rubber insulation types for power cable and SO cable. Most of them can handle the outdoors so there are other variations that need to be accounted for. Just remember that if you’re paying for it then make sure you need it all.