Main use of the drill tail screw

The self-drilling screw is a new invention in recent years. Screws are a general term for fasteners, everyday spoken language.
The tail of the drill-tail screw is drill-tailed or pointed-tailed, which does not require auxiliary processing. It can directly drill, tap and lock on the setting materials and foundation materials, which greatly saves construction time. Compared with ordinary screws, the toughness and the holding force are high, and the length of the combination is not loose after a long time. It is easy to use the safe punching and tapping once.
Uses: It is a kind of screw. It is mainly used for the fixing of steel steel tile and steel plate for simple construction. It cannot be used for metal to metal bonding.
Material and model
The material is made of iron or stainless steel, of which stainless steel is divided into various materials.
Models are: Φ4.2 / Φ4.8 / Φ5.5 / Φ6.3mm, the specific length can be agreed upon according to requirements.
According to the different tails, it can be divided into:
Round head rice / cross / plum, countersunk (flat head) / rice / cross / plum, hexagonal Huashi, round head Huasi (large flat head), trumpet head and so on.
Screws are tools that use the physics and mathematical principles of the circular rotation and friction of the bevel of an object to gradually tighten the components of the object. Screws are a general term for fasteners, everyday spoken language.
Screws are indispensable industrial essentials in daily life: extremely small screws for cameras, glasses, clocks, electronics, etc.; general screws for televisions, electrical products, musical instruments, furniture, etc.; for engineering, construction, and bridges, large Screws, nuts, transportation equipment, airplanes, trams, cars, etc. are used for both size and size.
Screws have an important task in the industry. As long as there is industry on the earth, the function of the screw is always important. Screws are the common inventions in people's production and life for thousands of years. According to the application field, it is the first invention of human beings.
The first person to describe the spiral was the Greek scientist Archimedes (circa 287 BC - 212 BC). The Archimedes spiral is a huge spiral mounted in a wooden cylinder that lifts water from one level to another and irrigates the field.
The true inventor may not be Archimedes himself. Maybe he just described something that already exists. It may have been designed by the craftsmen of ancient Egypt to use irrigation on both sides of the Nile.
In the Middle Ages, carpenters used wooden nails or metal nails to connect furniture to wooden structures. In the 16th century, nailers began to produce nails with spirals that could connect things more securely. That is a small step from this type of nail to the screw.
Around 1550 AD, the first metal nuts and bolts that appeared as fasteners in Europe were hand-made on a simple wooden lathe.
Screwdrivers (screws) appeared in London around 1780. Carpenters found that screwing a screw with a screwdriver can fix things better than a hammer, especially when it comes to fine-grained screws.
In 1797, Mozley invented the all-metal precision screw lathe in London. The following year, Wilkinson made a nut and bolt making machine in the United States. Both machines produce universal nuts and bolts. Screws are quite popular as fixed parts because an inexpensive production method has been found at that time.
In 1836, Henry M. Philips applied for a patent for the screw of the cross recessed nail head, which marked a significant advancement in the screw base. Unlike conventional slotted head screws, the Phillips head screw has a Phillips head screw head edge.

This design makes the screwdriver automatically centered and not easy to slip off, so it is very popular. Universal nuts and bolts connect the metal parts together, so in the 19th century, the wood used to make the machine building was replaced with metal bolts and nuts.
The first person to describe the spiral was the Greek scientist Archimedes (circa 287 BC - 212 BC). The Archimedes spiral is a huge spiral mounted in a wooden cylinder that lifts water from one level to another and irrigates the field. The true inventor may not be Archimedes himself.
Maybe he just described something that already exists. It may have been designed by the craftsmen of ancient Egypt to use irrigation on both sides of the Nile.
In the Middle Ages, carpenters used wooden nails or metal nails to connect furniture to wooden structures. In the 16th century, nailers began to produce nails with spirals that could connect things more securely. That is a small step from this type of nail to the screw.
Screwdrivers (screws) appeared in London around 1780. Carpenters found that screwing a screw with a screwdriver can fix things better than a hammer, especially when it comes to fine-grained screws.
In 1797, Mozley invented the all-metal precision screw lathe in London. The following year, Wilkinson made a nut and bolt making machine in the United States. Both machines produce universal nuts and bolts. Screws are quite popular as fixed parts because an inexpensive production method has been found at that time.

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