Black Pan Head or Countersunk Self Tapping Screws

Black Pan Head or Countersunk Self Tapping Screws

Self Tapping Screws, Tapping Screws, Tapper Screws

  • Standard: DIN7981, ISO7049
  • Sizes: ST2.9-ST6.3
  • Surface: Zinc Plated, HDG or Black Self Tapping Screws
  • Head Type:Cross Recessed Pan Head Self Tapping Screws

Self Tapping Screw Manufacturer, Self Tapping Screws Factories in China


Black Pan Head or Countersunk Self Tapping Screws

Fastenwell, known as a leading screws factory and self tapping screw manufacturer, the self tapping screws we manufactured are exproted to Europe, Russia, Asia and America, at the best factory prices and best delivery. Self tapping screws and self drilling screws two main products in Fastenwell's production lines. If you have request for self tapping screws and self drilling screws, please feel free to contact us at


What is a self tapping screws?

Self tapping screws are fasteners that are designed to drill their own hole as they are screwed into wood, plastic, brick or metal, they are available in all shapes and sizes, also available in varies different head types, like slotted flat countersink head, cross recessed cheese head, cross recessed pan head, etc. Fastenwell is a professional self tapping screw manufacturer in China who manufacture and export self tapping screws for over 15 years. 


If you are looking for self tapping screw manufacturer, Fastenwell will be a good and reliable self tapping screws suppliers for you in China. Contact us for the best factory support by


  • Material: Carbon Steel, Alloy Steel, Steel C1008, C1012, C1022
  • Size: ST2.9-ST6.3
  • Surface Finish: Plain, Zinc, Nickel.
  • Application: Metal Building and other general applications, metal, brick, plastic and wood connection.
  • Package: Small box, or 25kgs/carton, 36cartons/pallet
  • Delivery: 45 days
  • As a self tapping screw manufacturer, customized self tapping screws can be provided basing on your samples or drawing.


Self Tapping Screws Size Chart

Thread Specification


ST2.2 ST2.9 ST3.5 (ST3.9) ST4.2 ST4.8 ST5.5 ST6.3
P Thread Pitch 0.8 1.1 1.3 1.3 1.4 1.6 1.8 1.8
a Max 0.8 1.1 1.3 1.3 1.4 1.6 1.8 1.8
dk Max 4.2 5.6 6.9 7.5 8.2 9.5 10.8 12.5
Min 3.9 5.3 6.54 7.14 7.84 9.14 10.37 12.07
k Max 1.8 2.2 2.6 2.8 3.05 3.55 3.95 4.55
Min 1.55 1.95 2.35 2.55 2.75 3.25 3.65 4.25
y Max (Type C) 2 2.6 3.2 3.5 3.7 4.3 5 6
Max (Type F) 1.6 2.1 2.5 2.7 2.8 3.2 3.6 3.6
Slot No. 1 1 2 2 2 2 3 3
M1 2.6 3 4.2 4.4 4.6 5 6.5 7.1
M2 2.4      2.9      3.9      4.1      4.3      4.7        6.2      6.7     


Fastenwell Self Tapping Screws

Fastenwell is a self tapping screw manufacturer, and our screws Range including machine screws, self-tapping screws, self-drilling screws, chipboard screws, wood screws, drywall screws etc. If you couldnot find the screws you want in our page, please send picture or drawing to our sales representives by


Self Tapping Screw Manufacturer & Manufacturing

Different screws could be found in our production lines. Small boxes or regular cartons package are available.

What is a self tapping screw used for?

As its name suggests, self-tapping screws are used for tapping and fastening materials including wood, metal, plastic and brick. Sometimes self tapping screws also requires a pilot hole before installation, such as steel or aluminum applications.


How can you tell if a screw is self tapping?

Self tapping screws have a sharp thread which can help to cut through strong or hard surface. But self tapping screws also have different thread types like pointy tip, blunt or flat. As a professional self tapping screw manufacturer, Fastenwell can provide you best support in different screws including self tapping screws, self drilling screws, chipboard screws, machine screws etc.


Do you need a drill for self tapping screws?

No, self tapping screws can easily be installed with a screwdriver. However, you' d better to drill a small pilot hole before you drill the screw.


Do self tapping screws come loose?

Yes, it depends on your installation. If the hole is big, the screw become loose because not thread properly and securely. On the contrary, if the hole is small, the screw can be break or the contacting material will be cracked.


The Difference Between Self Drilling Screws and Self Tapping Screws

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.

Self tapping screws are screws that have the ability to tap threads into the material. These screws cannot drill through metal and require a pilot hole before installation. While self-drilling screws do not require a drilled hole, which reduce installation time and lower the cost and need of additional drilling tools.

In conclusion, all self drilling screws are also self tapping screws, but all self-tappers are not self-drillers.


Fastenwell is a leading self tapping screw manufacturer and suppliers in China. Our self tapping screws range in production are black oxide self tapping screws, black self tapping screws with washers, assorted black countersunk self tapping screws, black raised self tapping screws, standard self tapping screws, hex tapping screws etc.


For more information or quotation for bulk self tapping screws, please feel free to ask us by, your reliable self tapping screw manufacturer and supplier.



1. Are you a self tapping screw manufacturer?

Yes, we are self tapping screw manufacturer. Actually as screws factories in China, we make and export self tapping screws, machine screws, self drilling screws, drywall screws and chipboard screws etc for over 15 years.


2. How long is your delivery time for self tapping screws?

It takes 7-10 days for stock products. For bulk order, it will be in 30-60 days according to the order quantity.


3. Can we have screws samples?

Yes, free samples can be provided if screws stocks are available.


4. Can we use our own head mark or customize package?

Yes, Fastenwell is a standard and custom self tapping screw manufacturer, customize headmark and package are acceptable, please send the requirements when place order.


5. How can we make an order for black self tapping screws?

You can send us inquiry from the contact page or contact us by directly.


Keywords: self tapping screw manufacturer, self drilling screws suppliers in China, Screws factories in China, black countersunk self tapping screws, self tapping screws suppliers

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