Self-Tapping Screws: How They Work and How to Use Them

When looking for fastening solutions, one common solution to use for routinely maintained products is self tap screws.


What Is A Self Tapping Screw?


Self tapping screws are fasteners that are designed to drill their own hole as they are screwed into wood, plastic or metal. By using a screw driver and self-tapping screws, precisely fitted threads are created. Self tap screws are ideal for items that require regular maintenance and work well when working with two different kinds of material being fastened together.


These screws either come with a blunt, flat, sharp or piercing tip. Sharp-tipped self tapping screws drill their own holes in softer wood and plastic. However, it is helpful to drill a pilot hole when working with harder material. When drilling a pilot hole, make sure to use a smaller bit than the screw so it may still serve its purpose.


What material is involved can help determine what type of self tap screw will work best. There are two types: thread-forming and thread-cutting. Thread-forming screws are usually used when working with plastics. Thread-forming screws are designed to stay in place tightly, but over tightening the screw could result in materials breaking under too much pressure. Thread-cutting screws are used mostly when working with metal and wood. One drawback to using thread-cutting screws is that the threads may strip if the application is disassembled. This prevents reuse of the fastener and requires a new, slightly larger self tapping screw when it is time to reassemble.


However, there is a solution to prevent stripping. A metal insert can be installed from the beginning that would allow the self tapping screw to be regularly fastened and unfastened. These metal inserts also work to help minimize stress and expand as the fastener is screwed in.


Just like other types of fasteners, self tapping screws are available in all shapes and sizes and are also available in numerous different head types. When choosing the right self-tapping screw for any given application, it is important to consider the length of the screw tip. In order for the screws to serve their purpose and work properly, the screw must be drilled fully into the material before threading can begin.


Although self tapping screws are typically more in terms of price, they can help cut down on time and labor costs and combine the steps of drilling and fastening.


To learn more about where to find high quality self tap screws, please visit Fu Yeh, the professional screw manufacturer in the industry.



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Types of Side Release Buckles

Side Release Buckles and Other Fasteners


Whether you make paracord survival bracelets or other projects which require side release buckles, this article will show you some cool options and some other ideas you may not have considered for fastening your bracelets.


Buckles, in one form or another, are the most common way for fastening bracelets and other gear and there are so many types of buckles to choose from and ways to fasten them. Some of the buckles are metal, but more are plastic (less expensive). There are buckles with whistles built in and of course, they come in many different sizes.


Some people choose to make plain survival bracelets with nothing more than a knot and loop fastener. For the ultra-crafty people or those wanting to do something different, you can weave beads or other toggles on one end of the bracelet and then a simple loop on the other. Here we’re going to take a look at some of the more common fasteners that most of us use in our projects. In the end I think you’ll find some great ideas here for your next project.


Plastic Side Release Buckles Are Very Popular and They Come in So Many Different Sizes and Designs


For many people plastic side release buckles are their first choice because they are very affordable, and if you’re making bracelets and other projects as a hobby, well, you probably don’t want to spend a fortune on buckles. Also, if you’re making bracelets for a fund raiser or to re-sell then you want to maximize your profit, so again, plastic buckles would be the obvious choice.


The most common size of buckle used for paracord bracelets is 16 – 19 mm (5/8 or 3/4 inch). This measurement is the width of the hole in the buckle through which you place your strap or paracord. Because these plastic buckles are so affordable, you can get a few different sizes and experiment to find out which size, and which type of buckle you like best. While all of those mentioned in this section are side release, they don’t all have the same look and feel—some release easier than others, some are more robust (higher quality plastic), and some buckles are more rounded (contoured) and have a generally better feel while wearing.


There are also single adjusting and double adjusting buckles. Double adjusting simply means that there are two slider holes on each end of the buckle. On a backpack, for example, this would allow you to cinch up and tighten a strap from both sides. For a survival bracelet with paracord you don’t have the need or capability to adjust, so look for buckles with only one slider hole on each end if possible, for a better look.


Of course we also need to discuss the purpose that the buckles will serve. If you are planning on using them for a gear strap (say on a backpack or day bag), then you might want a larger or at least heavier duty one. If it is simply for looks and on a paracord bracelet, then the smaller plastic buckles will work fine.


If you’re planning on making a bracelet for a survival or safety use, maybe using some reflective paracord, then it might be a good idea to use buckles that have a whistle built in like the one pictured here. For the most part these whistles work alright, but they aren’t the loudest thing you’ve heard. That being said, for a lost hiker, or a jogger trying to summon help, they will do the job. And they look kid of cool, too.


Metal Side Release Buckles Give Your Project Added Strength


And of Course the Ultra-Tough Look That You Want in a Survival Bracelet


There are many reasons why people choose plastic over metal side release buckles, and perhaps the two biggest reasons are 1) the cost increase by using metal buckles is significant if you use a lot of them, and 2) there’s added weight and bulk when using metal. However, there are still applications where metal is the right choice.


There are far fewer style choices when it comes to metal buckles, due to their decreased demand and also because of the relative greater difficulty and cost in manufacturing. In tactical applications you will almost always see plastic being used whenever possible, because it decreases the magnetic presence of the wearer (think bombs and IED’s), and also because there are no spark concerns, nor are there any rust related issues to contend with. Finally, plastic buckles rely on the tension created naturally by the displaced connectors when they’re snapped into place. Metal buckles, on the other hand, rely on small, internal springs to retain their tension… meaning that they can wear out and fail, while the plastic buckles are much more likely to retain their shape and strength over time.


There are no bells and whistles (literally) on the metal buckles, and your choices are limited to basically the size you want.


Plastic Buckles with Side Release Are Cool


But These Steel Shackles Give You the Ultimate Survival Look


Are you looking for some really cool buckles to make something really unique, or do you have a project that requires something more robust than plastic buckles? There are tons of things to be made with paracord beyond bracelets, and so many ways to make them all. More and more people are getting creative and making their products their own. And lot’s of people prefer the rugged look of the metal shackle buckles. I admit it, I like them, too!


As you can see, using this type of buckle gives much more strength and reliability than a typical side release buckle. Of course the cost is higher, but the end product is clearly much more appealing. Again, it will boil down to the project. For fund raisers you will almost certainly want to stick with the plastic buckles.


One of the Coolest Paracord Projects with Buckles


Make a Dog Collar With These Large Reflectors, Side Release Buckles!


If you have a dog, or know someone who does, you can make a really cool personalized gift: a reflective dog collar. Using ultra-cool reflective paracord colors and this large side release buckle that includes a reflector, you have the makings for something special.


No dogs? These make great luggage straps—the kind you wrap around your luggage to ensure that it doesn’t pop open when airport security or those guys on the conveyor belts throw it around. There are lots of ways you can make something really creative with these plastic buckles! Check it out.


What Are Your Thoughts on Buckle Types? Side Release or Shackles?


Ok, now that you’ve had a chance to look at some of the different types of buckles, including the side release and metal shackle types, here’s a question. If you were going to make a paracord bracelet, right now, and had both types in front of you, which would you use? More details check out here: Do you prefer plastic buckles or metal shackles?


By the way, if you need more selections of release buckle and plastic buckle, I recommend that you can visit the website of SHIN FANG and DYI ER KANG. Both of them are professional plastic buckle manufacturers in the industry. Try to check out their website to obtain ideal bag accessories you need.



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Have Preliminary Understanding of The SEMS Screws

Do you know what are SEMS screws and how do they use? If you don’t understand, try to read this article to have preliminary understanding of the SEMS screws.


Washers are often used in combination with screws to improve the structural integrity of an assembly. Typically, they are separate components. However pre-assembled screws and washers – the SEMS screws, have simplified and improved efficiencies in many manufacturing processes.


What is a SEMS Screw?

SEMS Screw - Hex Flange Head Self Drilling Screw Harden RuspertA SEMS Screw is a generic term used to describe a screw pre-assembled with a free-spinning lock washer. It is a permanent assembly with the washer held in place by the major diameter of the screw thread being larger than the hole of the washer. The SEMS screw is simple, easy to use and available in many different styles making it well suited for many applications.


Advantages of the SEMS Screw:


  • Low cost and widely available
  • Increases productivity by eliminating hand assembly of individual components
  • Permanent assembly assures that the washer is not dropped, lost or forgotten
  • Ease of use with hand drivers and in automated production programs
  • Available in most screw and washer combinations


Key Considerations When Choosing SEMS Screws:


  • Select the correct configuration for the specific task at hand
  • Good design ensures savings in the long run
  • Proper finishes perform optimally and are aesthetically pleasing
  • Ease of use, particularly in difficult spaces


Fu Yeh International Corporation is one of the leading manufacturers in the fastener fields. They provide all kinds of screws, t-nut, stamping parts, spring, nuts and toolings. Fuh Yeh promises to provide competitive prices, on time delivery with best service. If you want to get further details about SEMS screws and other fasteners, welcome to visit their website: and send inquiries to them.


Choose Fu Yeh International Corp. to Obtain The Most Numerous Screws Selections Here.



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Powerful CN-70CL Pneumatic Clinch Nailer in APACH Industrial

Are you often annoyed from having no ideal pneumatic coil nailers? I can recommend you to visit the website of Apach, the leading nailer guns manufacturer in the industry. Apach’s products are durable and can endure under harsh working environments, and therefore are highly recognized and sought-after by professionals worldwide.


Today, I will show you the latest product Apach produces – CN-70CL Pneumatic Clinch Nailer.


CN-70CL Pneumatic Clinch Nailers

Speciality Tools

Apach CN-70CL Pneumatic Clinch Nailer with ergonomic design shows you its powerful, rapid nailing performance. No matter industrial use or DIY, it will be the most suitable air tool for you.


Now, try to check out Apach’s website to understand the advantages of CN-70CL Air Clinch Nailer.




176 Industrial 9th Rd, Tali Dist., Taichung City, Taiwan 41280

TEL: +886 -4-24915576

FAX: +886- 4-24915580


What are Forged Pipe Fittings?



Forged Pipe Fittings (Thread Fittings and Socket Weld Fittings) are made in accordance to ASME (American Society of Mechanical Engineers) B16.11, MSS-SP-79\ 83\ 95\97 and BS3799 standards, and are used to connect nominal bore schedule pipes and pipelines. The applications range from chemical, petrochemical, power generation and OEM manufacturing industry as well other applications where vibration, high pressure or extremely corrosive conditions exist.




Forged pipe fittings are generally available in two materials: Carbon Steel (ASTM A105 material spec), and Stainless Steel SS316 (ASTM A182 material spec). The surface of carbon steel A105 forged pipe fittings may be further reinforced against corrosion through galvanizing. This is an optional add-on which customers may include at an additional cost.


Pressure Rating and Size Range:


Fittings come in a variety of classes and material grades for any application. The fittings are available in 2000lbs, 3000lbs, 6000lbs, and 9000lbs. Although class 2,000 and 9,000 fittings exist, these are rarely used and class 3,000 and 6,000 remain the more common class of fittings used. Sizes of forged fittings typically range from 1/8” (DN6) up to 4” (DN100). And reducing sizes are available for common parts like couplings, tees, hex bushings and nipples.


Connection Types:


Class 3,000 and 6,000 forged pipe fittings comes in two types of connection: Socket Weld, or Threaded. NPT (National Pipe Thread) is the most common thread type although BSPP (British Standard Pipe Parallel thread) is also being available for certain parts like Full Couplings, Hex Bushings and Hex Nipples. Socket weld connection is significantly more popular than threaded since most applications call for completely sealing off a line and eliminating all possibility of leakage.


The fittings are normally produced with the same connection for all sides of the same fitting. That means, a socket weld fitting will have socket weld connection on all sides. Should different connection ends be required, additional machining could be possible but at a higher cost and a longer lead time.


Brands of Forged Fittings:


A highly recommended manufacturer for forged pipe fittings is Wellgrow Industries Corp... Wellgrow was established in 1987 in Taiwan, and has been well-recognized among customers worldwide for excellence in its quality and services. Under the strict control system, we have been certified with ISO 9002 and made our OEM products widely extend to international well-known manufacturers. Learn more information about steel fittings, please feel free to contact Wellgrow.



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Roofing Screws – A Metal Roofing Installation Essential

Three-inch self-tapping roofing screws are most frequently used to secure metal roofing, with the exception of the one-inch roofing screws which can sometimes be sufficient to attach the first edges of metal roofing sections. If, however, a metal roof is being installed on top of an existing asphalt roof, the first edges of each of its sections will have to be secured with three-inch roofing screws.


Self-tapping roofing screws are essential for simplifying metal roofing installation which has neither been factory pre-drilled nor dimple, because they are both faster to secure and reduce the risk of injury from snapped screws.


Sealing Metal Roofing


Because metal roofing has nothing in it which will seal the holes around roofing screws in the way asphalt roofing materials seal the holes around roofing nails, roofing screws manufacturers make two types of roofing screws. The first will have a sealer cap of metal which is seated directly on the roofing material and secured by the screw itself. The second will have washers of plastic or rubber integrated into their bodies, which automatically seal the holes in the roofing as they are inserted.


Roofing Screw Gun Alternatives


Metal roofing should not be hand-installed, because it demands that roofing screws be separated by no more than two feet. Driving this number of roofing screws by hand would quickly exhaust the hand and arm strength of the roofing crew, and relying on the rechargeable roofing screw guns now available would mean to switch to fresh batteries at hourly intervals. Because most rechargeable roofing screw gun batteries require a charging time of one hour, each roofing crew member would need four batteries to complete an eight hour shift!


One solution would be to use an electrically powered roofing screw gun which can operate without interruption for an entire day. Most of these screw guns are manufactured with adjustable power levels, enabling their users to select just the right amount of force to use when installing the roofing screws.


Roofing screws which are driven too deeply into a roof can either damage the roof itself or have their heaps snapped off, making them very difficult to remove. The disadvantage of using an electrically powered roofing screw gun is that it rewires the use of a long extension cord, which can be a hazard for those working on the rooftop.


The third alternative for installing roofing screws is the pneumatic screw gun, which is powered by an air compressor. The pneumatic patio roofing screw gun is attached to its air compressor by a long air hose, which like the extension cord on an electrical screw gun can be a real encumbrance when it is dragged around on the roof.


If you need further details about roofing screw and other screw series, welcome to visit our website and feel free to contact Fu Yeh – the various screw series manufacturing expert.


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Katsuhana Fastener Manufacturer is the Answer

Katsuhana Fasteners Corporation is a professional fastener manufacturer, which specializes in fasteners & fittings more than 15 years. They manufacture TEK screw, tapping screw, SEMS screw, socket set screw, drywall screw, thread rolling screw, particleboard screw, deck screw, flooring screw, roofing screw, wood screw, mansory/concrete screw, furniture screw, collated screw, stainless steel screw, chipboard screw, machine screw, multi-stroke screw, open die screw, special coating, wire word, nail, bolt, nut/rivet, washer/stamping/pin/spring etc.


The co-operative fastener manufacturers, ISO 9001 certificated, as Katsuhana’s strong background and supporting, an affiliated company production capacity can be around 500-1000 metric tons per month. Katsuhana origins in the pronunciation of Japanese, the abbreviation of three first names of Japan clients, because of their experience, knowledge and skills pass on. Moreover, based on the spirits of Japanese, quality and service are much more than everything, the reliable supplier to you. When you want a speedy response, Katsuhana fastener manufacturer is the answer!

Various screws and fasteners with high quality by Katsuhana Screw Manufacturer

==Taiwan Screw Manufacturers & Screw Supplier==

Taiwanese screw manufacturer – Katsuhana Fasteners Corp. Specialized in the fasteners & fittings with more than 15 years. In the past, we just focus on the various small screw fields, such as thread rolling screw, self drilling screw, tapping screw, SEMS screw, set screw, drywall screw, machine screw, particle board screw, chipboard screw, wood screw, stainless steel screws etc. Katsuhana hold honesty as our principle to server customers for long-term cooperation within customers. We also hope that we could build up close partnership for mutual profit.

The Advantages Of AUSTEK:

  • No Carbonization
  • No Need Pre-Drilling Hole
  • High Tensile / High Torque/ High Security
  • High Anti-Corrosion
  • Non Magnetism
  • No Embrittlement
  • ACQ Treated-Wood Compliance

AUSTEK, 100% 300 Series

All stainless made of SUS 300 series (302,304,305,316), ” No Carbonization“. The invention patent of the world. Heating causing the stainless steel to loose its properties, the chemical compounds will be the same but the carbon will come out and cause rust. True-Stan remains unchanged but is much harder for penetration. The best choice to eliminate red rust, high anti-corrosion, specified worldwide in all the applications of interior or outdoor.


==Company Profile==

“Katsuhana Fasteners Corp” is a professional teamwork group and the leading manufacturer in Taiwan, specialized in the fasteners & fittings with more than 15 years. In the past, we just focus on the various small screw fields, such as self drilling screw, tapping screw, SEMS screw, set screw, drywall screw, machine screw, particle board screw, chipboard screw, wood screw, stainless steel etc. But now, Katsuhana can expend more various products to serve our clients “one stop shopping” such as nut, washer, stamping, multi-formers, bolt and nails and more.

“Katsuhana” origins in the pronunciation of Japanese, the high quality symbol in the world, because we are experienced in the knowledge and selling to Japan market, as well as to all over the worlds, base on the spirits of Japanese, quality and service are much more than everything, to be the reliable supplier to you.