China Suppliers DIN 7504 Stainless Steel Self Drilling Screw With Rubber Washer Hex Head Self Drilling Roofing Crew
Hex Head Self-Drilling Screws are suitable for fastening brackets, components, cladding, and steel sections to steel. The Self-Drilling point drills and threads without the need of a pilot hole, with a hex head for a quick and secure fasten into steel.Hexagon head screws — also called hex screws, hex socket screws and hex head cap screws — have a six-sided head and preformed machine threads on the shank, or shaft. You might have seen hex screws abbreviated as HH or HX, depending on the manufacturer or retailer.
Advantages:
◈Teks Drill Point
Non walking, cutting edges, pigtail reduction
Engages material faster, drills with less effort, safer installation
◈Load bearing area
Selectively hardened to retain strength and ductility performance similar to a Grade 5 bolt
Resists shear failure due to loading and different expansion coefficients in dissimilar metals
◈Installs faster
Drills and taps faster with fewer stalls
Reduces installation time and money
◈Climaseal ACR
Coating provides long life protection
Fewer replacements
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?
|
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
