Self Drilling Screw - Hex - With Dome Washer (a.k.a Polycarbonate Washer) Self-Drilling Polycarbonate Roofing Screw provides single step installation with no pre-drilling required. The unique cutting head ensures the correct size expansion hole is pre-drilled ...

How Self-Drilling Screws are Used Roofing Self-drilling screws for metal roofing are specially designed with a washer to form a tight seal when fastening. As with all self-drilling screws, they have a drill bit formed point that makes inserting them quick and ...

Materials can be divided into: Carbon Steel 1022A, Stainless steel 410, Stainless steel 304. 1. Carbon steel Self Drilling Screw, 1022A. Standard heat-treated steel can be used as a material for the production of drill tail screws. After heat treatment, the ...

Light steel structure is a young and vital steel structure system. It has been widely used in general industrial, agricultural, commercial, and service buildings. It has also been used in adding floors, transforming, and reinforcing old buildings, and in areas...

D-Tough Series Self Drilling Screw RANGE OVERVIEW Heavy duty D-Tough series screws from our tek screw metal self drilling screw range. Features include hex large diameter washer head offering a large surface area for a strong clamping action and a hardened...

DD Fasteners D-tough series Screw (a.k.a Replace Marutex tek screw) is used for metal to metal fixing of thick steel purlin and hot rolled steel. Used for metal to metal fixing in the HAVAC, plumbing and steel fabrication industries where thick steel section ...

DD FASTENERS - a simple pressure gasket providing leak-proof sealing from water, gasses, oils and other fluids. EPDM rubber is vulcanized the metal from the zinc plated mild steel, aluminum, and stainless steel. Bonded washers are the cost-effective solution...

Product name: Pan / CSK/ Flat head Self drilling screws Material: 410 stainless steel Color: Plain Specifications: (M3.5-M3.9-M4.2-M4.8-M5.5-M6.3) ◆ High-quality 410 Stainless Steel Self Drilling Screws Assortment Kit ◆ Material: 410 Stainless Steel; Scr...

Stainless Steel Self Drilling Roofing Screws The difference between 304 and 410 stainless steel self-Tapping/ Drilling screws. The materials are different: 304 stainless steel is a common material in stainless steel, with a density of 7.93 g/cm, a high tempe...

Chipboard screws are self-tapping screws with thin shafts and coarse threads. They are made of carbon steel or stainless steel and then galvanized. Chipboard screws of different lengths can be used in a variety of applications. They are created to fasten lo...

The Chipboard Screw is also called  Screw for Particleboard or Screw MDF. It’s designed with a countersunk head ( usually a double countersunk head), a slim shank with an extremely coarse thread, and a self-tapping point. The countersunk/ double countersunk...

If you’re looking for high-quality, made-to-last drywall screws, look no further. DD Fasteners has a wide-selection of low carbon steel and medium carbon steel drywall screws that are built for even the toughest drywall. We carry a variety of finishes for ou...