Last updated on September 25th, 2023 by Myla Pablo
Screws are fasteners that are typically composed of metal and have a helical ridge known as a male thread (external thread). Screws and bolts are used to fasten materials by engaging the screw thread with a matched part’s corresponding female thread (internal thread).
Screws are frequently self-threading (also known as self-tapping), which means that as the screw is turned, the thread cuts into the material, providing an internal thread that helps pull connected materials together and prevents pull-out. There are numerous screws for a wide range of materials; screws are widely used to fasten wood, sheet metal, and plastic.
It is a simple machine: it is basically an inclined plane wrapped around a central shaft, but the inclined plane (thread) has a sharp edge around the outside that serves as a wedge as it pushes into the fastened material, and the shaft and helix also form a wedge at the spot.
Some screw threads are designed to match with a complementary thread known as a female thread (internal thread), which is commonly found in the form of a nut object with an internal thread.
Other screw threads are made to carve a helical groove in softer materials as the screw is installed. Screws are most commonly used to keep objects together and to position objects.
A screw will often have a head on one end that can be rotated with a tool. Screwdrivers and wrenches are common tools for driving screws. The head is often larger than the body of the screw to prevent the screw from being pushed deeper than the screw’s length and to provide a bearing surface.
There are a few exceptions. The domed head of a carriage bolt is not intended to be driven. A set screw with a head the same size or smaller than the outside diameter of the screw thread is known as a grub screw; a set screw without a head is known as a grub screw. A J-bolt is an anchor bolt with a J-shaped head that is sunk into concrete.
Almost all screws are tightened in clockwise direction which is called a right-hand thread. And opened in counter clockwise direction.
Terk Screws are types of screws that have equipped with their own drill tip means that there is no need for additional drilling.
The table below shows the latest retail September 2023 prices of terk screws (steel) in Philippine Peso price per piece including its pieces per box and sizes.
Price and Size of TerkScrew per pcs in the Philippines
|600 pcs / Box
|12 x 125
|800 pcs / Box
|12 x 100
|1000 pcs / Box
|12 x 85
|1500 pcs / Box
|12 x 75
|2000 pcs / Box
|12 x 65
|2500 pcs / Box
|12 x 55
|3000 pcs / Box
|12 x 50
|3000 pcs / Box
|12 x 45
|4000 pcs / Box
|12 x 35
|5000 pcs / Box
|12 x 25
|6000 pcs / Box
|12 x 20
UPDATED: Construction Material Prices for Terk Screw Steel in the Philippines (September 2023)
UPDATED: All Construction Prices are based on retail prices around hardware in Metro Manila
To see other material construction, please see here.
To know other construction guides, tips, and methodology for beginners, veterans, and contractors, please see here.