Wholesale White Yellow Galvanize Csk Double Countersuck Head Self-Drilling Screw

• Material: Carbon Steel
• Type: Countersunk Head
• Groove: Cross
• Connection: Common Bolt
• Head Style: Counter Sunk Bolt
• Standard: DIN, GB, ANSI
• Grade: 4.8
• Transport Package: Bag, Carton, Box
• Specification: 3.5 3.9 4.2 4.8mm
• Origin: China
• HS Code: 7318140000
• Production Capacity: 30000 Tons

Product Description

Wholesale white yellow galvanize CSK double countersuck head self-drilling screw
 

Material	C1022A, Stainless Steel
Diameter	#6(3.5mm),#7(3.9mm),#8(4.2mm),#10(4.8mm)
Length	9-13mm
Surface Treatment	Phosphate, Galvanize, Nickel, Ruspert, etc
Head Mark	As per the customer's request
Packaging	Woven bag 25kg/bag; Bulk in carton; Small box+carton
Delivery Time	Normally 15-30 days

Self-Drilling Screws have only one major characteristic that makes them unique: the point. The Self-Drilling point on the screw is made during the point-forming process in Xinruifeng's facilities.
Self-Drilling Screws are made to penetrate thin to thick types of sheet metal or metal blocks.

Depending on the size and length of the screw, the drill point can range from #1 to #6 drill point. The larger the point size the longer the screw to make it capable of drilling through the thicker block of metal. 
These Self-Drilling Screws are able to drill metal-to-metal or wood-to-metal.  Some Self-Drilling Screws also come with wings, but no, they do not fly. 

These wings sit right on top of the drill points, which acts as diggers digging through the wood above the metal. It helps creates larger areas for wood and metal burrs to be burrowed out. 
Before the wings reach the metal layer, it snaps off making it easier to be drilled through metal. Xinruifeng is also able to provide special types of Self Drilling Screws, such as blade cut points for heavy-duty drilling.

 

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FAQ:
Q: What are your Hot sale products?
A: Drywall screws, Chipboard screws, Wood Screws, Self Tapping Screws, Self Drilling Screws, Gypsum screws, Roofing screws, Truss Head screws, and other Special screws.

Q: How long is your delivery time?
A: Generally it is 10-15 days if the goods are in stock. or it is 4-5 weeks if the goods are not in stock, according to quantity.

Q: Do you provide samples? is it free or extra?
A: We could offer the sample for free, but consumers should pay the freight.

Q: Why choose us?
A: 1) Reply to you within 24 working hours.
    2) Experienced staff would like to answer all your questions in time.
    3) Customized design is available. ODM&OEM are welcome.
    4) Special discounts and protection of sales area provided to our consumers.
    5) As an honest exported seller, We are a professional manufacturer, with quality quotations, good service, and skilled                     technicians to ensure our products are finished in high quality and stable features.