China Factory wholesale Pancake Head Machine Screw - Self-drilling screw – YouYou factory and suppliers

Factory wholesale Pancake Head Machine Screw - Self-drilling screw – YouYou

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Our company since its inception, constantly regards product or service high quality as business life, continually improve creation technology, make improvements to product high-quality and consistently strengthen business total high-quality management, in strict accordance together with the national standard ISO 9001:2000 for Electro Galvanized Iron Wire, Coil Nails Roofing, Steel Wire 0.5 Mm, Competitive price with high quality and satisfying service make us earned more customers.we wish to work with you and seek common development.

Factory wholesale Pancake Head Machine Screw - Self-drilling screw – YouYou Detail:

Product Name:self-drilling screw
Material:stainless steel/carbon steel.
Color:sliver/black/zinc
Standard: DIN ISO JIS GB ANSI ASME BSW
Grade:A2-70/A4-80/4.8/8.8/12.8
Package:
1. We have several sizes of packing dimensions, can be 20kg or 25kg per carton;
2. For large orders, we can design specific sizes of boxes and cartons;
3. Normal Packing: 1000pcs/500pcs/250pcs per small box. then small boxes into cartons.
4. Can provide special packings as clients requests;
Features:
 1. We supply credible products with high quality in timely delivery.
 2.All of our products are inspected by QC before packing
 3.Standard export package or according to your requirements.
How are self drilling screws measured?
They are measured from the top of the head to the tip. Hex and hex washer head screws and bolts, 
although flat on the top and the bottom, are measured from the bottom of the head. From that point 
to the tip is the length of the screw. Self drilling screws are measured all the way to the end of the 
drill point tip.
Do you need a pilot hole for self drilling screws?
While self-tapping screws will tap a hole into a soft material, self-drilling screws are capable of drilling 
a hole into anything from metal to wood. This key difference is self-drilling screws have a tip like a 
drill bit, so they do not need a pilot hole.
What is the difference between self drilling and self tapping screws?

Self-drilling screws eliminate the need for a pilot hole, but can tap as well. Self-tapping screws tap

their own threads, but cannot drill through metal and require a pilot hole. These screws are not

interchangeable, and mixing up the two can cause many headaches or possible failures in the field.

What are self drilling screws used for?

Self drilling screws have a point that acts as a drill bit and sharp cutting threads that tap the hole

during installation. Self drilling screws are a commonly used variety of screw for quick drilling into

both metal and wood. A self drilling screw can typically be identified by its point and flute (notch) tip.

size(mm)	size(mm)	size(mm)
4.2*13	5.5*32	6.3*25
4.2*16	5.5*38	6.3*32
4.2*19	5.5*41	6.3*38
4.2*25	5.5*50	6.3*41
4.2*32	5.5*63	6.3*50
4.2*38	5.5*75	6.3*63
4.8*13	5.5*80	6.3*75
4.8*16	5.5*90	6.3*80
4.8*19	5.5*100	6.3*90
4.8*25	5.5*115	6.3*100
4.8*32	5.5*125	6.3*115
4.8*38	5.5*135	6.3*125
4.8*45	5.5*150	6.3*135
4.8*50	5.5*165	6.3*150
5.5*19	5.5*185	6.3*165
5.5*25	6.3*19	6.3*185

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We emphasize advancement and introduce new products and solutions into the market each year for Factory wholesale Pancake Head Machine Screw - Self-drilling screw – YouYou , The product will supply to all over the world, such as: Kuwait, Southampton, Borussia Dortmund, We aim to become the modern enterprise with the commercial ideal of "Sincerity and confidence" and with the aim of "Offering customers the most sincere services and best quality products". We sincerely ask for your unchanged support and appreciate your kind advice and guidance.

We have worked with many companies, but this time is the best，detailed explanation, timely delivery and quality qualified, nice!