Hex Flange Stainless Steel Screws , Washer Head Self Drilling Sheet Metal Screws With EPDM 1. Descriptions: Hex head Self Drilling Screws have some Drill Point, Such as Type T4 and T5 hex head drill point. these screws are designed for heavy gauge metal to metal framing applications. These screws feature NanoGard exterior grade coating for improved corrosion resistance.
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DIN7504K hex head self drilling screw, roofing screw
stainless steel, carbon steel, alloy steel, brass and so on
yellow zinc, black phosphate, gray, white zinc, HDG, ruspert, nickel and so on
High Performance – Continuous thread design up to drilling point maximizes pullout performance and shear strength.
Precision – Drilling these screws is achieved in a single process thus eliminating the need of alignment or pre-drilled holes and thus ensuring precision.
Easy and Smooth Tapping – Its smooth thread allows easy and self tapping through the structure.
Easy to Use with Minimal Efforts – Design of these screws is so engineered that unskilled amateur can use them with minimal efforts.
Time Saving – Using these screws saves time by eliminating the need of alignment or pre-drilled holes.
Dual Functionality – Allows fastening to both, timber and steel.
Minimal Wastage – Reduces Wastage
4. Mechanical properties Tests:
Mechanical properties Tests
torque strength kgf
tensile strength kgf
shear strength kgf
SUS304 and SUS316
5. How to Install :
Insert the 8 or 10 mm (according to required size) hex head adapter into the drill motor. Center the adapter into the drill’s chuck to ensure that adaptor does not wander.
Put on the safety glasses to protect your eyes.
Inspect the hex end of the adaptor for cleanliness. If metal shavings are built up inside the tip, insert the drilling end of the screw into the cavity of the hex head while holding the trigger of the drill.
Place a self-drilling screw into the hex head adapter.
Depress the trigger of the drill slowly, while the drilling tip of the screw rests against the metal. Increase the speed of the drill when the screw finds its center.
Stop drilling when the head of the self drilling screw tightens against the surface of the metal. If the drill you are using does not have a clutch, pay close attention to the screw head, as too much pressure will either snap the screw of strip the threads formed in the metal by the screw.
Perform Step 3 before you install another self drilling screw.