Hex Washer Head Self Drilling Screw

SEC start making self-drilling screws (SDS) since 1994. Our SDS have a patented drilling tip that can reduce the drilling time and have consistent quality. That means you can use less force to fasten, shorter assembly time and save the cost. Our hex self drilling screw can assemble with different washer, EPDM, PVC, EPDM steel bonded washer.

DIN, IFI, ISO, ASTM, ASME or according to customer's drawing and samples.
Material: Stainless steel: 304, 316, 410
                   Carbon steel: 1022, 1018
                   Alloy steel: 10B21, 10B33
Gauge: #8 - #14, M4 – M6.3
Length: 1/2’’- 10’’, 12mm – 250mm
Drilling point: #1-#5

SELF DRILLING SCREWS Self drilling screws are very easy to install, but con- tractors still encounter challenges like penetration speed or functioning problems. Therefore, it is our goal to eradicate those challenges by making self-drilling screws that are faster at drilling and are more stabilized.

Easy to use SEC's Nick Point self-drilling tip contains a small indent slightly on the side of the screw tip. It has been verified through many experiments and comparisons to have a consist shorter drilling time. Furthermore, our feedback from construction staffs indicating an effortless quick drilling speed. Stable quality Our self-drilling screws have a better penetration point that is slip resistant. Besides, a single SEC self-drilling screw can be redrilled 5 times without affecting performance. Suitable coating Depending on the environment at which your self-drilling screws are applied, we are able to coat these products according to C1-C4 specifications or according to your own customized specifications.own customized specifications. Any customization The SEC self-drilling screw can be matched with any EPDM size or steel bonded washer. We can also paint the screw head to the color of your roof or wall.

Common Applications

Steel Truss

Metal siding

SELF DRILLING SCREWS
Resistance to water, the ability to sustain high temperatures, along with the capability to fix various panels, e.g, thin panels, steel frames, and fiber laminates are the most essential components to constructing roofs and walls. Consequently, advancement in manufacturing technology must exist to meet these criteria. With a professional team focusing on research and development, we have developed such self drilling screws to meet these standards.

Special Tip The SEC self-drilling screw is equipped with a thread-to-tip design. This allows the screw to be easily penetrated into the iron plate and at the same time, reduce the chances of breaking the plate. Nick Point The SEC self-drilling screws uses a Nick Point Tip - a small indent slightly to the side of the screw tip, it is tested in our lab and by construction staffs to be consistent and very efficient at shortening the drilling time. Asymmetric Thread The special angle design, as well as the different pitches in the upper and lower sections can also be found in our self-drilling screws. This creates a pull-out resistance that allows the screw to firmly clinch the gaps between the plates. Straight Knurl The straight knurl can help expel the iron fillings and enlarge the hole without breaking it. Additionally, it can avoid stretching the rod diameter and reducing the risk of corrosion.

Common Applications

Steel Truss

Metal siding

Highest corrosive environment