Last updated on June 27th, 2022 by Myla Pablo
The screw, like the wheel, is one of the simplest and most powerful tools ever developed. A screw is a helical drive machine that allows you to easily attach two parts of nearly anything by twisting them together. Screws, unlike nails, can be easily removed and reused. Most are constructed of steel, brass, or aluminum, but specialized screws made of plastic or nylon are also available.
A screw’s name is usually derived from the sort of head it employs when being driven.
The most popular household screw types are Slotted Head (flat blade / straight slot), which is mostly used for basic joints like mounting a faceplate to an electrical outlet, Phillips Head (+ shape), which is commonly used on appliances, machines, hinges, and other hardware, and Multi-Head Torx (star shape), Robertson (square), and Hex screw (six-sided) are commonly employed in the construction and machine industries because they make better use of the torque provided by a power drill or pneumatic tool.
These are also less prevalent and are hence employed on some consumer products to discourage disassembly.
Job screws are types of self-drilling screws that are designed to have a drill bit point that can thread or bite into the metal. They are used to easier drill the screw and lessen the amount of effort and time to connect or join two pieces of materials together
This means that drilling would be reduced, as would the time and work required to finish your project. However, there are a few factors to consider when selecting a self-drilling screw.
The length of the flute is the first item to consider. The flute’s function is to extract the drilled material from the hole; if this becomes clogged, cutting will be hampered. The length of the flute required to accomplish your project is determined by the thickness of the metal on which your screw will be used. The next thing to think about is your drill point.
Always consider the material you intend to drill through when determining which screw length to utilize. Screw breaking is possible if the screw threads prematurely engage before the drill point has completely penetrated through the material.
The table below shows the latest retail May 2021 prices of job screws in Philippine Peso price per piece and the standard sizes for ordinary and truss heads.
Price and Size of Jobscrew per pcs in the Philippines
|25000 pcs / Box||6 x 1/2||0.50|
|Trusshead||8 x 1||1.50|
UPDATED: Construction Material Prices for job screws in the Philippines (May 2021)
UPDATED: All Construction Prices are based on retail prices around hardware in Metro Manila
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