Self-drilling screws are easy to distinguish if you look at their point, which curves gently at the end and is shaped like a twist drill. They’re often called Tek Screws, after the brand name that popularized them.

Self-drilling screws are also called tek screws. Its drill bit tips are numbered from #1 up to #5, indicating the length of the flute, which determines the metal thickness the screw can drill into. The bigger the number is, the thicker the metal a screw can go through.

The hex head self-drilling screws have three main types of drill points, Tek 3, Tek 4, and Tek 5. There’s also Tek 1 self-drilling hex head screw, whose point is also called reduced drill.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.1. High-Quality Stainless Steel Material: Crafted from durable and corrosion-resistant stainless steel, the self-drilling tek screws offer exceptional strength and reliability for a wide range of applications.

2. Consistent Performance: Backed by the reputable Boya brand, these screws are designed to deliver consistent and efficient performance, ensuring a quick and smooth installation process.

3. Rubber Washer for Enhanced Comfort: Boasting rubber washers, the screws provide added insulation and cushioning, minimizing noise and reducing vibrations during usage.

Poduct Application:a
1. Apply to metal plate, galvanized steel plate, metal curtain wall, metal light compartment, aluminum
door and window, indoor and outdoor decoration.
2. General anglesteel, channel steel, iron plate, PC Board and other metal material combining
installation.
3. Suitable for assembling steel roof, automobile body, container, shipbuilding industry, freezing
equipment and so on.

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;

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