A Screw is the term used when referring to a fastener (typically shorter than 1/4 inch) that is a tapered threaded shaft with a head on one end. The head allows the shaft to be driven, turned or rotated allowing the threaded shaft to create compression or torque. The head also creates a stopping point so that the screw has a useful depth. They are typically used in a substance that does not have threads, therefore creating threads in the substrate as it is being rotated.

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What are the advantages of using screws?

Screws are typically used in areas that hi-torque or pressure is not needed. They are easy to apply, often a screwdriver or tool that matches the head is used to create the turning action allowing the threads to bite and create new threads in the substance it is being applied. In wood or softer metals many times a starter hole is not needed, a little pressure and rotation is enough for the screw to start "biting" into the material and create new threads, allowing compression to begin.

Screws can easily be reused! Turning the screw in an opposite direction of the threads allows it to back out of the application and undo what its application was. This can be done several times as long as the screw is not over tightened and the threads stripped out. If the threads do become unusable, often a larger screw can be used for the same application.

What different types of screws are there?

Screws come with a variety of head types and drive systems. The head can be countersunk allowing it to be tightened to flush or below flush of the substrate often these are referred to as countersunk screws. Pan head screws are designed to stop at contact with the substrate. Some of the more common head designs are: Pan, Button, Round, Truss, Flat Oval, Bugle Fillister and Socket.

What are the most common screw drive types?

Screws require a drive system to turn the screw allowing the thread to bite or thread it self into the substrate. The most common style of screw drive is the "slotted" or Phillips". Hex, Robertson and TORX are also very common. Head design will vary depending on application. Some are used in manufacturing when machinery applies the screw and needs a specific design and some like the Spanner head are designed to be tamper-proof.

Industrial Supplies - Industrial Sales>

These are just some of the thousands of industrial supplies that Hi-Line salesmen carry on their trucks.  Every Hi-Line representative manages a territory, similar to a route sales system, where quality electrical and maintenance supplies are delivered directly to your bins. If you love industrial parts, working with people, and being your own boss, then contact Hi-Line at industrialsales@hi-line.com for a rewarding career in industrial sales.