The head of DIN7504Q modified truss head screw is round, it's a kind of efficient riveting fastener. The tails can be divided into two kinds, one is self-tapping, whose performance please refer to drywall screw.
Another is drilling tail, no auxiliary is required for the connection between the surface and interior of material while using, it can be drilled quickly and directly into the materials, then tapped and locked one-time.
It has the following advantages:
①The surface is galvanized with high brightness, good appearance and strong corrosion resistance.
②Carburizing and tempering treatment enhance the surface hardness, up to even over the standard value.
It is used for colored steel plate, galvanized steel plate, metal curtain wall, metal compartment, aluminum doors and Windows, billboards, construction fence, construction protection plate and other indoor and outdoor decoration
It also can be used for combined installation of angle steel, channel beam, color plate, PC board and other metal and non-metallic materials.
|Finish||White-blue zinc plated|
|Head type||DIN7504Q Modified Turss Head|
|Packing||1000pcs/box, or 1kg/25kg per bag, Customized|
|MOQ||Two tons for each size|
|Delivery time||Normally in15-30 days|
Pycnometer of Truss Head Self Drilling Screw：
Pycnometer of Truss Head Self Tapping Screw：
4. Production process
|1. Raw material||2. Cold upsetting||3. Rolling thread|
|4. Hot treatment||5. Galvanize/Parkerising||6. Packing|
5. Quality Inspection
To fully inspect the goods after finishing manufacturing, issue survey report and present to the overseas buyer. We ensure that all the products conform to the requirements of the order and relative international standards.
6. Packing & shipment Loading
A) 1kg/small bag, or 25kgs/woven bag, then bags or cartons loaded on pallet;
B) 1000pcs per small box, then small boxes into cartons;
C) Support customized packaging.
Shipping: By LCL or FCL Sea Shipment;