Hebei Delong Fastener Manufacturing Co. Ltd has recently announced that they have acquired new heat-treatment equipment in their factory. This equipment allows them to finish all the self-drilling screws and washer heat treatment in their factory, without the need for other factories to help them.

Similarities and Differences What’s most similar about these two types of screws is that both form threads as they penetrate the material being worked with. Both attach steel on steel and steel on wood when rivets or nuts and bolts cannot do the job. Between these two, however, self-drilling screws offer two distinct advantages: time and costs saved at assembly time, and reduced error in installation, which often happens if one pre-drills holes in the wrong size.

Do you know the difference between blackening and black phosphating of drywall nails?

With the rapid development of modern times, the use of nails is very frequent and widespread, so people love to use nails to meet various engineering needs. The use of nails can be seen in daily life and even in every place.

Firstly, we need to clarify the concept of drilling screws. Self drilling screw is a special type of screw with a drill bit at the end, which can directly drill holes on the material during tightening, achieving fast and efficient tightening. This type of screw is usually used for connecting and fixing materials such as metal, wood, plastic, etc.

Drywall screws are a common furniture decoration material that is widely used to fix lightweight items on walls. The use of drywall screws can quickly and conveniently complete various home decoration tasks, such as hanging paintings, mirrors, wall mounted shelves, etc.

I need to use self drilling screws shown below to attach something to a piece of metal. First time user of a cordless drill with so many settings. Do I use the drill setting at low speeds or the driver setting and adjust the clutch setting?

 For large metal projects a metal roof screw gun is a life saver as it truly is the right tool for the job.  For smaller projects a cordless drill/diver will work just fine.  Ideal speed range for cordless drill will be under 2,500 rpm and a variable clutch is highly recommended.  You might find lower speeds helpful when drilling into thicker metal and when using Stainless Steel screws to lessen the heat generated from the drilling process and avoid ‘burning’ the self-drilling tip.  Use of a variable clutch makes it possible to achieve a consistent drive without over tightening.  This is doubly important in dealing with roofing screws as they need to be correctly tightened so the EPDM sealing washer is compressed without squeezing out of the sides.

Self-tapping and self-drilling screws are two types of screws used in metal building and general construction, as well as many other applications and industries. Contrary to popular belief, the two terms are not interchangeable.No construction project is ever completed without complication.  Weather, material delays, and human error all cause interruptions.  Some delays can be avoided, however.  Simply ensuring you have the right tools for the job goes a long way in meeting your deadlines. Sometimes our customers ask for self-tapping screws when they actually want self-drilling screws, or vice versa.  We don’t want you to waste time or money by ordering the wrong products. Anyone serious about getting a job done efficiently and effectively needs to know the difference between self-drilling and self-tapping screws.  Choosing the right materials will save time, increase profit, and enhance the quality of your construction.Let’s go over the similarities, differences, and how to know when to use which type of screw.

A self-tapping screw forms its own hole and taps its own thread as it is driven into various, different materials. Self-tapping screws are available in just about every type of screw head design available in the market. The most common being the Phillips or slotted head. The tips and threads of self-tapping screws come in a vast array of patterns, depending on the application required.Self-tapping screws are ideal for applications where an item needs regular maintenance and needs constant disassembly and reassembly.  

Self-tapping screws are typically used to drill through thinner sheet metals and other substrates including wood and some plastics. Tapping screws have the best performance when the punch hole is drilled to the correct size. If the hole is too big, the screw won't thread correctly and will become loose. If the hole is too small, the screw can break or cause the material to split or crack.

As their name implies, self-drilling screws operate on the same principles as drill bits and other cutting tools. For any cutting tool, performance is governed by cutting speed, feed rate, depth of cut and the work material itself. Therefore, installation performance of self-drilling screws can be linked to the basic cutting tool parameters. Suggested optimal parameter values are listed by nominal screw size in the table below.

Self-drilling screws and self-tapping screws have a lot in common. They both come in multiple materials and finishes like stainless steel and galvanized steel. They can both create their own threads. They both come in a variety of heads and drive types. It’s no wonder they get confused for each other. So, what makes them different? The simple difference between them is that self-drilling screws can drill their own pilot hole and cut their own threads. Self-tapping screws can only cut their own threads. That’s it. Why don’t we take a closer look at each.

In any type of construction job, knowing the different kinds of screws available is essential. Certain projects require specific fasteners and self-tapping screws are one of the many options you can use. These fasteners have cutting threads on their shanks and sharp-pointed or drill pointed tips that allow them to drive into a material and cut their own mating threads unlike a machine screw which requires a nut. Many contractors love using these fasteners because they make attaching materials like wood so much easier. Understanding screws and their uses lets you work faster and more efficiently. At All Points Fasteners, we distribute a variety of self-tapping screws and our knowledgeable team is always happy to provide information on how to use our products. Whether you’re working on HVAC jobs, installing gutters or roofing a house, we’ve got the fasteners you need to get the job done.

A delegation of the manufacturers from Punjab met Union Industry and Commerce Minister Piyush Goyal on Wednesday evening seeking his urgent intervention to check the massive losses being suffered by the industry due to unchecked imports of cheaper Chinese manufactured screws. Vishal Garg who led the delegation said that "Chinese manufacturers and exporters are dumping goods in India by adopting various malpractices like wrong classification underinvoicing etc causing a huge revenue loss besides imports also pose a major threat to the survival of Indian manufacturers who are into similar goods something needs to be done urgently to check this problem." The inferior goods which are about 25 to 30 cheaper than the locally made goods are freely coming to India. Mahajan, General Secretary of the Northern India Screw Manufacturer and Traders Association, said "For last several decades the entire screw consumption in the country was being fed only from China and there were no local manufacturers at all in last about five years hundreds of local businessmen in Punjab took huge risks and set up screw manufacturing units to take on China and were successful in doing so by making high precision products and fulfilling the local demand." Unfortunately now our industry is on the verge of closure as China has started dumping huge quantity of inferior quality of screws in Indian markets by using several malpractices in the past two years

We not only will try our best to offer excellent services to every customer, but also are ready to receive any suggestion offered by our customers for Hexagon Head Self Drilling Screws, Self Cutting Screws, 2mm Self Tapping Screws, Welcome buddies from all over the earth come to visit, tutorial and negotiate.

Claiming massive losses due to unchecked imports of very cheap priced China made screws, a delegation of the manufacturers from Punjab met union Industry and Commerce minister Piyush Goyal on Wednesday evening.

Ludhiana, Jan 21 (KNN) The Ludhiana screw industry in a meeting with Union industry and commerce minister Piyush Goyal urged him to intervene over increasing imports from China.

SAN FRANCISCO — Despite a trade war between the United States and China and past admonishments from President Trump “to start building their damn computers and things in this country,” Apple is unlikely to bring its manufacturing closer to home.

Due to the lack of oil injection cooling, it is usually necessary for dry twin-screw compressors to design cooling jackets to carry away the heat generated during operation. In order to investigate to what extent a cooling jacket can improve the performance of screw compressors, this study set up an experimental platform for a dry twin-screw compressor applied in fuel cell vehicles and used water as the working liquid in the cooling jacket.