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  • phillips wafer head self drilling screws
  • phillips wafer head self drilling screws
  • phillips wafer head self drilling screws
Phillips Round Collar Head Self-drilling And Tapping Screws
  • 7-35 DAYS
  • 3000 TONS

The drill tail screw is a kind of wood screw. The drill tail screw is a screw with a self-tapping drill head at the front end of the screw, also called a self-drilling screw. According to the different types of drill tails, it can be divided into: round head rice / cross / plum, countersunk head (flat head) / rice / cross / plum, hexagonal Huashi, round head Huasi (large flat head), trumpet head and so on.

Phillips Round Collar Head Self-drilling And Tapping Screws

Product description

phillips wafer head self drilling screws

Product name:

Phillips Round Collar Head Self-drilling


ASME B18.6,DIN7504K,DIN7504P,DIN7504N


Carbon Steel, Stainless Steel



Head type:

Round Collar Head

Drive type:


Brand Name


Place of origin



Qingdao or according to requirement


According to customer’s requirement




Please lets know the Size, quantity, Material or Grade, surface, If it is special and Non-standard products, please supply the Drawing or Photos or Samples to us

Our advantage

1. One-stop shopping; 
2. High quality; 
Competitive price; 
3. Timely delivery; 
4. Technical support; 
5. Supply Material and Test Reports; 

6. OEM
7. Samples for free

Common points between self-tapping screws and self-drilling screws


The body is threaded and can be self-tapping.


The difference between self-tapping screws and self-drilling screws


1. Difference in use: Self-tapping screws are used on materials with low hardness such as non-metal or soft metal (such as color steel plate). It can be fixed on the material to be fixed by its own thread. The fixed body "drills, squeezes, presses, and taps" the corresponding threads to make them closely match each other. The tail screw is mainly used for fixing the steel tile of the steel structure, fixing on the thin plate and the like.


2. the difference in usage: when the self-tapping screw is screwed in, the corresponding internal thread is formed by extrusion. No need to punch, tap, complete the operation at one time, but it is not recommended to drill multiple times, which is easy to damage the hole or slip. When the tail screw is used, it does not need auxiliary machining, and can be drilled, tapped and locked directly on the material, which greatly saves the installation time.


3. the difference in appearance: self-tapping screws are generally pointed, coarse thread, hard texture, with a certain degree of taper, in order to "self-tapping", but can not drill, but the head of the screw thread There is a drill bit that can be drilled.

Who We are


NEW STARWDH INDUSTRIAL CO.,LTD supplies the best fastener product solutions and quality fastener productsOur core products cover ASME/ANSI, DIN, JIS, ISO, GB and other standard products, relying on the company's strong technical team, equipment, resource integration capabilities, including: Bolts, Nuts, Machine screws, Self tapping screws , Self drilling screws, Thread rod, Washers, Anchor bolts and other products. We welcome the customization of our products and have a complete customized production system to meet the different needs of different customers for fastener products.

Quality control


our company strictly complies with ISO9001 system. All our products are subjected to strict test and inspection in each process by the workers periodically, starting from the raw materials delivered to the factory.

We also accept customization order according to your samples and drawings

If you have other questions or concerns, please feel free to contact us.

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