China China Supplier Screw Counting Machine - Self-drilling screw – YouYou factory and suppliers

China Supplier Screw Counting Machine - Self-drilling screw – YouYou

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China Supplier Screw Counting Machine - 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 are commitment to offer you the aggressive price tag ,exceptional products and solutions high-quality, as well as fast delivery for China Supplier Screw Counting Machine - Self-drilling screw – YouYou , The product will supply to all over the world, such as: Mexico, Estonia, Slovakia, we always keep our credit and mutual benefit to our client, insist our high quality service to moving our clients. always welcome the our friends and clients to come and visit our company and guid our business, if you are interested in our products, you can also submit your purchase information online, and we will contact you immediately, we keep our highly sincere cooperation and wish everything in your side are all well.

With a positive attitude of "regard the market, regard the custom, regard the science", the company works actively to do research and development. Hope we have a future business relationships and achieving mutual success.