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Self Drilling Concrete Screws

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A Prince fastener self-drilling screw has a drill bit factor that put off separate drilling and tapping operations for faster, extra cost-efficient installations.

Additional information

Product Details

MaterialCarbon Steel
SizeOuter diameter2.9mm-6.3mm;Length6.5mm-120mm
Head TypeHexagon head, pan head, countersunk head, round head, truss head, half countersunk head
GroovePHILLIPS Head ,SLOTTED,SIXLOBE,POZIDRIV,HEXAGON
Surface TreatmentGalvanizing, Chromium Plating, Phosphating, Electrophoresis, Dacro, Hot Embroidery
Salt Spray Test48-72hour
ApplicationBuilding decoration, household appliances, auto parts, leisure goods, electronic equipment, hardware and electrical machinery,
aviation and military industry, infrastructure, furniture industry, outdoor leisure goods
PackingBox+Carton+Pallet for Self drilling screw
TrademarkPrince Fastener
Transport PackagePallet/Carton/Box for Self drilling screw

 

What is Self Drilling Concrete Screws

The self-drilling screw is called “SELF DRILLING screw” or “self-drilling screw”; north Chinese call it “swallowtail screw.” Its implementation standard is GB/T 15856.1-2002, standard German DIN7504N-1995, Japanese standard JIS B 1124-2003.

This kind of screw has a drill tail point, the tip is like a twist drill bit, so it is named. During assembly, the screw can drill out the center hole by itself, and then with the help of the adjacent thread part, it squeegee out the matching thread in the hole on the carrier, so it is called a self-drilling and self-tapping screw.

Categories of Self Drilling Concrete Screws based on purpose and shape

  1. Self-drilling and self-tapping screw with cross-groove disc head. The Cross Recessed pan head drilling trial with tapping Screw Thread is standard: GB/T 15856. 1-2002 has the following specifications :(, also known as round head drill tail).
  2. Cross groove countersunk head self-drilling and self-tapping screw. The executive standard is: GB/T 15856.2-2002 :(also known as horizontal head drilling, salad head drilling).
  3. The implementation standard is GB/T 15856.4-2002. (Also known as Hexagon flange drilling, it is the most commonly used and the largest specification of drilling screw thread.)
  4. Hexagon flat head drilling screw.Hexagon socket flat head self drilling

Categories of Self Drilling Concrete Screws based on the material

1.Carbon steel drilling and tail screw, 1022A, standard heat treatment steel can be used as drilling and tail screw production material, after heat treatment surface hardness HV560-750, core hardness HV240-450. The standard surface treatment is easy to rust, high hardness, low cost.

2.Stainless steel drill screw, 410, heat treatable, rust resistance better than carbon steel, worse than 304.

3.Stainless steel drill screStainless steel drill screw, 304, can not do heat treatment, rust resistance, low hardness, high cost, and only drill aluminum board, wood, and rubber board.w, 410, heat treatable, rust resistance better than carbon steel, worse than 304.

4.Composite drilling screw, the bit is produced with carbon steel, thread, and head with 304 stainless steel combined production process.

Application of Self Drilling Concrete Screws

Purpose: Generally used for fastening and connecting plastic steel, aluminum profiles, wood products, thin-wall steel tubes, steel plates, and non-ferrous metal plates.

Prince fastener production process

 

Basic concepts of Prince Fastener screw production

1、Prince Fastener Manufacturing screw can be divided into: cold heading, hot machining (turning, milling, etc.)
2、Cold heading is the use of plastic metal, by using cold mechanical pressure or drawing, reaches the metal solid deformation of.
3、Hot upsetting is the material after heating and pressure processing make the shape of the material to meet the
designrequirements.
4、Prince Fastener Machining is a small batch of special or special bolts of the six corners of the head is turned into after the milling.
5、 Screw bolt thread: mechanical and manual threading, similar to die.
6、 Milling tail: generally completed by the end of the Prince Fastener cutting machine.
7、 The difference between cold and hot upset: cold heading bolts` surface are more beautiful, dozen red bolt surface oxide skindoes not look good; cold heading high production is efficiency; general Prince Fastener M24 bolts will need to play red;

Analysis of the causes of the phenomenon and the causes of the forming process

1、Eccentric: two red and improper installation and adjustment machine.
2、Minow: a poor installation and improper Prince Fastener adjustment machine at.
3、Head is not round: the choice of a die or a punch forming is not enough.
4、Play the mode of crack: crack or die R angle, so that the model is hit by the two collision.
5、Head double: bad punch.
6、Flash: a bad, punching molding is mainly between punch and die hole clearance is too large or too short by red bars.
7、Crack angle: the punch needle burst or two punch and punch is not heavy.
8、Head cracking: material, or a die using error (such as pan head Hexagon washer head of a die), and lubricating oil.

Analysis of adverse phenomena and causes of common rolling

1、Processing crack: tooth plate and adjust the Prince Fastener old machine.
2、Blunt tail: the machine is not properly adjusted, the tooth plate is too old.
3、Crooked tail: the control screw on the seat board seat is too tight.
4、Tail: tooth wear plate and improper adjustment machine.

Prince fastener production process

We can manufacture and customize all types of fasteners for a wide range of industries

Prince Fastener Manufacturing is committed to serving world’s major distributors, wholesalers, retailers, enterprises , and terminal customers, and can customize all kinds of fasteners, non-standard parts according to various requirements of  customers to provide overall supporting solutions for customers in different industries and makes customers to achieve convenient and fast” One-stop fastener purchasing”experience

We can manufacture and customize all types of fasteners for a wide range of industries

fastener usage
fasteners usages
fasteners usage
screws applications

Why Choose Us?

Prince fastener experiences
prince fastener certicification

Prince Fastener own advanced manufacturing equipments introduced from Taiwan such as Head Making machines, Thread Rolling machines, Net Furnace and examining machines like Micro Hardness Tester and Microstructure Tester. We can provide the products you want with good qualities and competitive prices!

prince fastener workshop
FAQ

Q:The quality of your Drywall screw for metal?

A:Prince fastener has advanced production and testing equipment .Every products will be 100%
inspected by our qc department before shipment

Q: Are you trading company or manufacturer of Drywall screw for metal?
A:Prince fastener is a factory with 30 years of manufacturing experiences in Shanghai,China.

Q: What is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to
quantity.

Q: Do you provide Drywall screw for metal samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge and customers only afford the freight costs.

Q: What is your terms of payment ?
A: 30% T/T in advance ,balance before shippment.

Q: Why choose us?
A: 1) Reply you in 24 working hours.
2)Experienced staffs would like to answer all your questions in time.
3) Customized design is available. ODM&OEM are welcomed.
4)Special discount and protection of sales are provided to our consumers.
5) Prince fastener can provide free sample, consumer should pay the freight first, and the expensive sample cost will be added in the next order.
6) As an honest exported seller, Prince fastener always use professional factory, quality quotation, good service, skilled
technicians to ensure our products to be finished in high quality and stable feature.

Q:How about your price?
A:Quality products with reasonable price. Please give me a inquire, we will quoted you a price for you refer at once.

Q:What kind of products do your factory manufacturing?
A:Our main products are: drywall screw,chipboard screw, machine screw,self tapping screw,self drilling screw,Non/standard
screws,Engineering fastener(High strength bolts;Nuts;Washers;Anchor),Stainless steel screws,Self Drilling Screw, Self Tapping Screw, Thread Rolling Screw, Thread Cutting Screw, Machine Screw, Concrete Screw, Roofing Screw,
Drywall Screw, Particle Board Screw, Chipboard Screw, Construction screws, Coach screws, Lag screw, Wood Screw, Euro
Screw,Collated Screw, Furniture Screw, Sems Screw, Thumb Screw, Wing Screw, Phillips Head Screw, Set screws, Metric set screws,Sheet metal screws, Eye screw, Security head screw

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