China OEM/ODM China Self Aligning Machine Screws - Galvanised Metal Hexagon Head Tek Wood Stainless Steel Hex Self Drilling Screw With epdm Washers Roofing Screw – YouYou factory and suppliers

OEM/ODM China Self Aligning Machine Screws - Galvanised Metal Hexagon Head Tek Wood Stainless Steel Hex Self Drilling Screw With epdm Washers Roofing Screw – YouYou

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OEM/ODM China Self Aligning Machine Screws - Galvanised Metal Hexagon Head Tek Wood Stainless Steel Hex Self Drilling Screw With epdm Washers Roofing 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

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

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With our excellent administration, potent technical capability and strict top quality control technique, we go on to provide our consumers with trusted quality, reasonable price ranges and fantastic providers. We intention at becoming one among your most trusted partners and earning your fulfillment for OEM/ODM China Self Aligning Machine Screws - Galvanised Metal Hexagon Head Tek Wood Stainless Steel Hex Self Drilling Screw With epdm Washers Roofing Screw – YouYou , The product will supply to all over the world, such as: Australia, Bahrain, Sheffield, Our products are sold to the Middle East, Southeast Asia, Africa, Europe, America and other regions, and are favorably appraised by clients. To benefit from our strong OEM/ODM capabilities and considerate services, please contact us today. We will sincerely create and share success with all clients.

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