Our eternal pursuits are the attitude of “regard the market, regard the custom, regard the science” and the theory of “quality the basic, belief the very first and management the advanced” for Hot sale Factory Bsw JIS Torx Drywall Made in China Roofing Screw with Factory Price, For high quality gas welding & cutting equipment supplied on time and at the right cost, you can count on firm name.
Our eternal pursuits are the attitude of “regard the market, regard the custom, regard the science” and the theory of “quality the basic, belief the very first and management the advanced” for China Wood Screw, Fastener Screw, All our solutions are exported to clients in the UK, Germany, France, Spain, the USA, Canada, Iran, Iraq, the Middle East and Africa. Our merchandise are well welcomed by our customers for the high quality, competitive prices and the most favorable styles. We hope to establish business relationship with all customers and bring more beautifu colors for the life.

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 screw: self-drilling screw connect componenets in one worek step:the drill ,from the thread and fasten .

This reduces the installation time,saves tool changes and costs for drills.

Self drilling screw: self -drilling screw are availablein,stianelss steel for weather-exposed areas and in zinc,plated  steel for unweathered areas.

These steel screws hace a head encapsulated by chemical.resistant stainless steel . a rubber-bonded  washer compresses to form a,watertight seal.

The save you time,and effort by drilling theri own holes and fastening in a single operation

Our eternal pursuits are the attitude of “regard the market, regard the custom, regard the science” and the theory of “quality the basic, belief the very first and management the advanced” for Hot sale Factory Bsw JIS Torx Drywall Made in China Roofing Screw with Factory Price, For high quality gas welding & cutting equipment supplied on time and at the right cost, you can count on firm name.
Hot sale Factory China Wood Screw, Fastener Screw, All our solutions are exported to clients in the UK, Germany, France, Spain, the USA, Canada, Iran, Iraq, the Middle East and Africa. Our merchandise are well welcomed by our customers for the high quality, competitive prices and the most favorable styles. We hope to establish business relationship with all customers and bring more beautifu colors for the life.